./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1833073641

<...>
forked to background, child pid 3183
no interfaces have a carrier
[   23.983279][ T3184] 8021q: adding VLAN 0 to HW filter on device bond0
[   23.993218][ T3184] eql: remember to turn off Van-Jacobson compression on your slave devices
Starting sshd: OK

syzkaller
Warning: Permanently added '10.128.0.18' (ECDSA) to the list of known hosts.
execve("./syz-executor1833073641", ["./syz-executor1833073641"], 0x7fff1d2cddb0 /* 10 vars */) = 0
brk(NULL)                               = 0x55555737d000
brk(0x55555737dd00)                     = 0x55555737dd00
arch_prctl(ARCH_SET_FS, 0x55555737d3c0) = 0
uname({sysname="Linux", nodename="syzkaller", ...}) = 0
readlink("/proc/self/exe", "/root/syz-executor1833073641", 4096) = 28
brk(0x55555739ed00)                     = 0x55555739ed00
brk(0x55555739f000)                     = 0x55555739f000
mprotect(0x7efc38e3c000, 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
rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0
rt_sigaction(SIGSEGV, {sa_handler=0x7efc38d8c0a0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7efc38d8d410}, NULL, 8) = 0
rt_sigaction(SIGBUS, {sa_handler=0x7efc38d8c0a0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7efc38d8d410}, NULL, 8) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3605
./strace-static-x86_64: Process 3605 attached
[pid  3604] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3605] openat(AT_FDCWD, "/dev/loop0", O_RDWR <unfinished ...>
[pid  3604] <... clone resumed>, child_tidptr=0x55555737d690) = 3606
[pid  3604] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3605] <... openat resumed>)       = 3
[pid  3605] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3604] <... clone resumed>, child_tidptr=0x55555737d690) = 3607
./strace-static-x86_64: Process 3607 attached
./strace-static-x86_64: Process 3606 attached
[pid  3605] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3604] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3607] openat(AT_FDCWD, "/dev/loop2", O_RDWR <unfinished ...>
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR <unfinished ...>
[pid  3605] close(3./strace-static-x86_64: Process 3608 attached
 <unfinished ...>
[pid  3607] <... openat resumed>)       = 3
[pid  3606] <... openat resumed>)       = 3
[pid  3605] <... close resumed>)        = 0
[pid  3604] <... clone resumed>, child_tidptr=0x55555737d690) = 3608
[pid  3605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3604] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3605] <... clone resumed>, child_tidptr=0x55555737d690) = 3609
[pid  3604] <... clone resumed>, child_tidptr=0x55555737d690) = 3610
[pid  3604] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3607] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3606] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 3611 attached
./strace-static-x86_64: Process 3610 attached
./strace-static-x86_64: Process 3609 attached
 <unfinished ...>
[pid  3608] openat(AT_FDCWD, "/dev/loop3", O_RDWR <unfinished ...>
[pid  3607] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3606] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3604] <... clone resumed>, child_tidptr=0x55555737d690) = 3611
[pid  3608] <... openat resumed>)       = 3
[pid  3607] close(3 <unfinished ...>
[pid  3608] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3607] <... close resumed>)        = 0
[pid  3606] close(3 <unfinished ...>
[pid  3609] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR <unfinished ...>
[pid  3609] <... prctl resumed>)        = 0
[pid  3608] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3606] <... close resumed>)        = 0
./strace-static-x86_64: Process 3612 attached
[pid  3611] openat(AT_FDCWD, "/dev/loop5", O_RDWR <unfinished ...>
[pid  3610] <... openat resumed>)       = 3
[pid  3609] setpgid(0, 0 <unfinished ...>
[pid  3608] close(3 <unfinished ...>
[pid  3607] <... clone resumed>, child_tidptr=0x55555737d690) = 3612
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3612] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3611] <... openat resumed>)       = 3
[pid  3610] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3609] <... setpgid resumed>)      = 0
[pid  3608] <... close resumed>)        = 0
[pid  3612] <... prctl resumed>)        = 0
[pid  3611] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3610] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3609] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3612] setpgid(0, 0 <unfinished ...>
[pid  3611] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3610] close(3 <unfinished ...>
[pid  3609] <... openat resumed>)       = 3
[pid  3612] <... setpgid resumed>)      = 0
[pid  3611] close(3 <unfinished ...>
[pid  3610] <... close resumed>)        = 0
[pid  3609] write(3, "1000", 4 <unfinished ...>
[pid  3606] <... clone resumed>, child_tidptr=0x55555737d690) = 3613
[pid  3612] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3611] <... close resumed>)        = 0
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3609] <... write resumed>)        = 4
[pid  3608] <... clone resumed>, child_tidptr=0x55555737d690) = 3615
./strace-static-x86_64: Process 3615 attached
./strace-static-x86_64: Process 3613 attached
[pid  3612] <... openat resumed>)       = 3
[pid  3611] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3609] close(3 <unfinished ...>
[pid  3613] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3612] write(3, "1000", 4 <unfinished ...>
[pid  3610] <... clone resumed>, child_tidptr=0x55555737d690) = 3616
[pid  3609] <... close resumed>)        = 0
./strace-static-x86_64: Process 3617 attached
./strace-static-x86_64: Process 3616 attached
[pid  3615] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3613] <... prctl resumed>)        = 0
[pid  3612] <... write resumed>)        = 4
[pid  3611] <... clone resumed>, child_tidptr=0x55555737d690) = 3617
[pid  3609] mkdir("./file0", 0777 <unfinished ...>
[pid  3617] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3616] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3615] <... prctl resumed>)        = 0
[pid  3613] setpgid(0, 0 <unfinished ...>
[pid  3612] close(3 <unfinished ...>
[pid  3609] <... mkdir resumed>)        = 0
[pid  3617] <... prctl resumed>)        = 0
[pid  3616] <... prctl resumed>)        = 0
[pid  3615] setpgid(0, 0 <unfinished ...>
[pid  3613] <... setpgid resumed>)      = 0
[pid  3612] <... close resumed>)        = 0
[pid  3609] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3617] setpgid(0, 0 <unfinished ...>
[pid  3616] setpgid(0, 0 <unfinished ...>
[pid  3615] <... setpgid resumed>)      = 0
[pid  3613] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3612] mkdir("./file0", 0777 <unfinished ...>
[pid  3609] pipe2( <unfinished ...>
[pid  3617] <... setpgid resumed>)      = 0
[pid  3616] <... setpgid resumed>)      = 0
[pid  3615] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3613] <... openat resumed>)       = 3
[pid  3612] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3609] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3617] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3616] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3615] <... openat resumed>)       = 3
[pid  3613] write(3, "1000", 4 <unfinished ...>
[pid  3612] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3609] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3617] <... openat resumed>)       = 3
[pid  3616] <... openat resumed>)       = 3
[pid  3615] write(3, "1000", 4 <unfinished ...>
[pid  3613] <... write resumed>)        = 4
[pid  3612] pipe2( <unfinished ...>
[pid  3617] write(3, "1000", 4 <unfinished ...>
[pid  3616] write(3, "1000", 4 <unfinished ...>
[pid  3615] <... write resumed>)        = 4
[pid  3613] close(3 <unfinished ...>
[pid  3612] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3617] <... write resumed>)        = 4
[pid  3616] <... write resumed>)        = 4
[pid  3615] close(3 <unfinished ...>
[pid  3613] <... close resumed>)        = 0
[pid  3612] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3617] close(3 <unfinished ...>
[pid  3616] close(3 <unfinished ...>
[pid  3615] <... close resumed>)        = 0
[pid  3613] mkdir("./file0", 0777 <unfinished ...>
[pid  3617] <... close resumed>)        = 0
[pid  3616] <... close resumed>)        = 0
[pid  3615] mkdir("./file0", 0777 <unfinished ...>
[pid  3613] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3617] mkdir("./file0", 0777 <unfinished ...>
[pid  3616] mkdir("./file0", 0777 <unfinished ...>
[pid  3615] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3613] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3617] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3616] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3615] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3613] pipe2( <unfinished ...>
[pid  3617] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3616] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3615] pipe2( <unfinished ...>
[pid  3613] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3617] pipe2( <unfinished ...>
[pid  3616] pipe2( <unfinished ...>
[pid  3615] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3613] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3617] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3616] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3615] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3617] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3616] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3609] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3609] exit_group(0)               = ?
[pid  3609] +++ exited with 0 +++
[pid  3605] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3609, si_uid=0, si_status=0, si_utime=0, si_stime=4} ---
[pid  3605] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  3605] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3605] close(3)                    = 0
[pid  3605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3621
./strace-static-x86_64: Process 3621 attached
[pid  3621] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3621] setpgid(0, 0)               = 0
syzkaller login: [   41.659833][ T3616] Cache volume key already in use (9p,(null),)
[   41.665657][ T3612] Cache volume key already in use (9p,(null),)
[   41.666780][ T3615] Cache volume key already in use (9p,(null),)
[   41.672421][ T3617] Cache volume key already in use (9p,(null),)
[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] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3621] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3621] pipe2([3, 4], 0)            = 0
[pid  3621] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3615] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3615] exit_group(0)               = ?
[pid  3615] +++ exited with 0 +++
[pid  3608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3615, si_uid=0, si_status=0, si_utime=0, si_stime=4} ---
[pid  3608] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3608] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3
[pid  3608] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3608] close(3)                    = 0
[pid  3608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3622
./strace-static-x86_64: Process 3622 attached
[pid  3622] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3622] setpgid(0, 0)               = 0
[pid  3622] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3622] write(3, "1000", 4)         = 4
[pid  3622] close(3)                    = 0
[pid  3622] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3622] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3622] pipe2([3, 4], 0)            = 0
[pid  3622] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3613] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3613] exit_group(0)               = ?
[pid  3613] +++ exited with 0 +++
[pid  3606] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3613, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3606] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3
[pid  3606] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3606] close(3)                    = 0
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3623
./strace-static-x86_64: Process 3623 attached
[pid  3616] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3623] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3616] exit_group(0 <unfinished ...>
[pid  3623] <... prctl resumed>)        = 0
[pid  3616] <... exit_group resumed>)   = ?
[pid  3623] setpgid(0, 0 <unfinished ...>
[pid  3616] +++ exited with 0 +++
[pid  3623] <... setpgid resumed>)      = 0
[pid  3623] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3623] write(3, "1000", 4)         = 4
[pid  3623] close(3)                    = 0
[pid  3610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3616, si_uid=0, si_status=0, si_utime=0, si_stime=4} ---
[pid  3623] mkdir("./file0", 0777 <unfinished ...>
[pid  3610] restart_syscall(<... resuming interrupted clone ...> <unfinished ...>
[pid  3623] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3610] <... restart_syscall resumed>) = 0
[pid  3623] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3623] pipe2([3, 4], 0)            = 0
[pid  3623] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3
[pid  3610] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3610] close(3)                    = 0
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3624
./strace-static-x86_64: Process 3624 attached
[pid  3624] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3612] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3624] setpgid(0, 0 <unfinished ...>
[pid  3612] exit_group(0 <unfinished ...>
[pid  3624] <... setpgid resumed>)      = 0
[pid  3612] <... exit_group resumed>)   = ?
[pid  3624] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3612] +++ exited with 0 +++
[pid  3624] write(3, "1000", 4 <unfinished ...>
[pid  3607] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3612, si_uid=0, si_status=0, si_utime=0, si_stime=4} ---
[pid  3624] <... write resumed>)        = 4
[pid  3624] close(3)                    = 0
[pid  3624] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3624] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3607] openat(AT_FDCWD, "/dev/loop2", O_RDWR <unfinished ...>
[pid  3624] pipe2( <unfinished ...>
[pid  3607] <... openat resumed>)       = 3
[pid  3624] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3607] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3624] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3607] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3607] close(3)                    = 0
[pid  3607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3625
./strace-static-x86_64: Process 3625 attached
[pid  3625] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3625] setpgid(0, 0)               = 0
[pid  3617] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3625] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3625] write(3, "1000", 4)         = 4
[pid  3625] close(3)                    = 0
[pid  3625] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3625] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3625] pipe2([3, 4], 0)            = 0
[pid  3625] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3617] exit_group(0)               = ?
[pid  3617] +++ exited with 0 +++
[pid  3611] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3617, si_uid=0, si_status=0, si_utime=0, si_stime=5} ---
[pid  3611] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3
[pid  3611] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3611] close(3)                    = 0
[pid  3611] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3626
./strace-static-x86_64: Process 3626 attached
[pid  3626] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3626] setpgid(0, 0)               = 0
[pid  3626] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3626] write(3, "1000", 4)         = 4
[pid  3626] close(3)                    = 0
[pid  3626] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3626] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3626] pipe2([3, 4], 0)            = 0
[pid  3626] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3623] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3623] exit_group(0)               = ?
[pid  3623] +++ exited with 0 +++
[pid  3606] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3623, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[   41.942956][ T3622] Cache volume key already in use (9p,(null),)
[   41.948172][ T3625] Cache volume key already in use (9p,(null),)
[   41.949656][ T3624] Cache volume key already in use (9p,(null),)
[   41.962763][ T3623] Cache volume key already in use (9p,(null),)
[pid  3606] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3
[pid  3606] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3606] close(3)                    = 0
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3627
./strace-static-x86_64: Process 3627 attached
[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  3621] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3621] exit_group(0 <unfinished ...>
[pid  3627] write(3, "1000", 4 <unfinished ...>
[pid  3621] <... exit_group resumed>)   = ?
[pid  3627] <... write resumed>)        = 4
[pid  3621] +++ exited with 0 +++
[pid  3605] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3621, si_uid=0, si_status=0, si_utime=0, si_stime=4} ---
[pid  3627] close(3)                    = 0
[pid  3627] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3627] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3627] pipe2([3, 4], 0)            = 0
[pid  3627] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3605] openat(AT_FDCWD, "/dev/loop0", O_RDWR <unfinished ...>
[pid  3625] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3625] exit_group(0)               = ?
[pid  3625] +++ exited with 0 +++
[pid  3607] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3625, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3607] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3607] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3
[pid  3607] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3605] <... openat resumed>)       = 3
[pid  3607] close(3)                    = 0
[pid  3605] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3605] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3607] <... clone resumed>, child_tidptr=0x55555737d690) = 3628
[pid  3605] close(3)                    = 0
./strace-static-x86_64: Process 3628 attached
[pid  3624] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3628] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3624] exit_group(0 <unfinished ...>
[pid  3628] <... prctl resumed>)        = 0
[pid  3624] <... exit_group resumed>)   = ?
[pid  3628] setpgid(0, 0./strace-static-x86_64: Process 3629 attached
 <unfinished ...>
[pid  3624] +++ exited with 0 +++
[pid  3628] <... setpgid resumed>)      = 0
[pid  3605] <... clone resumed>, child_tidptr=0x55555737d690) = 3629
[pid  3628] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3624, si_uid=0, si_status=0, si_utime=0, si_stime=4} ---
[pid  3628] <... openat resumed>)       = 3
[pid  3610] restart_syscall(<... resuming interrupted clone ...> <unfinished ...>
[pid  3628] write(3, "1000", 4 <unfinished ...>
[pid  3610] <... restart_syscall resumed>) = 0
[pid  3628] <... write resumed>)        = 4
[pid  3629] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3628] close(3 <unfinished ...>
[pid  3629] <... prctl resumed>)        = 0
[pid  3628] <... close resumed>)        = 0
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR <unfinished ...>
[pid  3629] setpgid(0, 0 <unfinished ...>
[pid  3628] mkdir("./file0", 0777 <unfinished ...>
[pid  3610] <... openat resumed>)       = 3
[pid  3629] <... setpgid resumed>)      = 0
[pid  3628] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3610] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3629] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3628] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3610] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3629] <... openat resumed>)       = 3
[pid  3628] pipe2( <unfinished ...>
[pid  3610] close(3 <unfinished ...>
[pid  3629] write(3, "1000", 4 <unfinished ...>
[pid  3628] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3610] <... close resumed>)        = 0
[pid  3629] <... write resumed>)        = 4
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3629] close(3)                    = 0
[pid  3610] <... clone resumed>, child_tidptr=0x55555737d690) = 3630
[pid  3629] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3629] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3629] pipe2([3, 4], 0)            = 0
[pid  3629] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3628] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"..../strace-static-x86_64: Process 3630 attached
 <unfinished ...>
[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] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3630] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3630] pipe2([3, 4], 0)            = 0
[pid  3630] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3622] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3622] exit_group(0)               = ?
[pid  3622] +++ exited with 0 +++
[pid  3608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3622, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3608] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3
[pid  3608] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3608] close(3)                    = 0
[pid  3608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3631 attached
 <unfinished ...>
[pid  3631] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3608] <... clone resumed>, child_tidptr=0x55555737d690) = 3631
[pid  3631] <... prctl resumed>)        = 0
[pid  3631] setpgid(0, 0)               = 0
[pid  3631] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3631] write(3, "1000", 4)         = 4
[pid  3631] close(3)                    = 0
[pid  3631] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3631] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[   42.176621][ T3630] Cache volume key already in use (9p,(null),)
[   42.177883][ T3627] Cache volume key already in use (9p,(null),)
[   42.189675][ T3629] Cache volume key already in use (9p,(null),)
[   42.197164][ T3628] Cache volume key already in use (9p,(null),)
[pid  3631] pipe2([3, 4], 0)            = 0
[pid  3631] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3630] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3630] exit_group(0)               = ?
[pid  3630] +++ exited with 0 +++
[pid  3610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3630, si_uid=0, si_status=0, si_utime=0, si_stime=4} ---
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3
[pid  3610] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3610] close(3)                    = 0
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3632
./strace-static-x86_64: Process 3632 attached
[pid  3632] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3632] setpgid(0, 0)               = 0
[pid  3632] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3632] write(3, "1000", 4)         = 4
[pid  3632] close(3)                    = 0
[pid  3626] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3632] mkdir("./file0", 0777 <unfinished ...>
[pid  3626] exit_group(0 <unfinished ...>
[pid  3632] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3626] <... exit_group resumed>)   = ?
[pid  3632] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3632] pipe2( <unfinished ...>
[pid  3626] +++ exited with 0 +++
[pid  3632] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3611] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3626, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3632] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3611] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3
[pid  3611] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3611] close(3)                    = 0
[pid  3611] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3633
./strace-static-x86_64: Process 3633 attached
[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] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3633] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3633] pipe2([3, 4], 0)            = 0
[pid  3628] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3633] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3628] exit_group(0)               = ?
[pid  3628] +++ exited with 0 +++
[pid  3607] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3628, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3607] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3
[pid  3607] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3607] close(3)                    = 0
[pid  3607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3634
./strace-static-x86_64: Process 3634 attached
[pid  3634] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3634] setpgid(0, 0)               = 0
[pid  3634] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3634] write(3, "1000", 4)         = 4
[pid  3634] close(3)                    = 0
[pid  3634] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3634] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3634] pipe2([3, 4], 0)            = 0
[pid  3634] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3629] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3629] exit_group(0)               = ?
[pid  3629] +++ exited with 0 +++
[pid  3605] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3629, si_uid=0, si_status=0, si_utime=0, si_stime=4} ---
[pid  3605] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  3605] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3605] close(3)                    = 0
[pid  3605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3635
./strace-static-x86_64: Process 3635 attached
[pid  3635] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3635] setpgid(0, 0)               = 0
[pid  3635] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3635] write(3, "1000", 4)         = 4
[pid  3635] close(3)                    = 0
[pid  3635] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3635] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3635] pipe2([3, 4], 0)            = 0
[pid  3635] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3627] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3627] exit_group(0)               = ?
[pid  3627] +++ exited with 0 +++
[pid  3606] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3627, si_uid=0, si_status=0, si_utime=0, si_stime=5} ---
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3
[pid  3606] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[   42.493144][ T3632] Cache volume key already in use (9p,(null),)
[   42.494971][ T3633] Cache volume key already in use (9p,(null),)
[   42.505847][ T3634] Cache volume key already in use (9p,(null),)
[pid  3606] close(3)                    = 0
[pid  3632] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3632] exit_group(0)               = ?
[pid  3606] <... clone resumed>, child_tidptr=0x55555737d690) = 3636
[pid  3632] +++ exited with 0 +++
./strace-static-x86_64: Process 3636 attached
[pid  3636] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3636] setpgid(0, 0)               = 0
[pid  3610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3632, si_uid=0, si_status=0, si_utime=0, si_stime=4} ---
[pid  3636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR <unfinished ...>
[pid  3636] <... openat resumed>)       = 3
[pid  3610] <... openat resumed>)       = 3
[pid  3610] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3636] write(3, "1000", 4 <unfinished ...>
[pid  3610] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3636] <... write resumed>)        = 4
[pid  3636] close(3 <unfinished ...>
[pid  3610] close(3)                    = 0
[pid  3636] <... close resumed>)        = 0
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3636] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3636] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3610] <... clone resumed>, child_tidptr=0x55555737d690) = 3637
[pid  3636] pipe2([3, 4], 0)            = 0
[pid  3636] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"..../strace-static-x86_64: Process 3637 attached
 <unfinished ...>
[pid  3637] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3637] setpgid(0, 0)               = 0
[pid  3637] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3637] write(3, "1000", 4)         = 4
[pid  3637] close(3)                    = 0
[pid  3637] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3637] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3637] pipe2([3, 4], 0)            = 0
[pid  3637] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3631] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3631] exit_group(0)               = ?
[pid  3631] +++ exited with 0 +++
[pid  3608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3631, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3608] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3
[pid  3608] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3608] close(3)                    = 0
[pid  3608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3638
./strace-static-x86_64: Process 3638 attached
[pid  3638] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3638] setpgid(0, 0)               = 0
[pid  3638] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3638] write(3, "1000", 4)         = 4
[   42.581341][ T3635] Cache volume key already in use (9p,(null),)
[pid  3638] close(3)                    = 0
[pid  3638] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3638] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3638] pipe2([3, 4], 0)            = 0
[pid  3638] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3634] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3634] exit_group(0)               = ?
[pid  3634] +++ exited with 0 +++
[pid  3607] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3634, si_uid=0, si_status=0, si_utime=0, si_stime=4} ---
[pid  3607] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3
[pid  3607] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3607] close(3)                    = 0
[pid  3607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3639
./strace-static-x86_64: Process 3639 attached
[pid  3639] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3633] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3639] <... prctl resumed>)        = 0
[pid  3633] exit_group(0 <unfinished ...>
[pid  3639] setpgid(0, 0 <unfinished ...>
[pid  3633] <... exit_group resumed>)   = ?
[pid  3639] <... setpgid resumed>)      = 0
[pid  3633] +++ exited with 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] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3639] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3639] pipe2([3, 4], 0)            = 0
[pid  3639] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3611] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3633, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3611] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3
[pid  3611] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3611] close(3)                    = 0
[pid  3611] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3640
./strace-static-x86_64: Process 3640 attached
[pid  3640] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3640] setpgid(0, 0)               = 0
[pid  3640] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3640] write(3, "1000", 4)         = 4
[pid  3640] close(3)                    = 0
[pid  3640] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3640] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3640] pipe2([3, 4], 0)            = 0
[pid  3640] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3635] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3635] exit_group(0)               = ?
[pid  3635] +++ exited with 0 +++
[pid  3605] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3635, si_uid=0, si_status=0, si_utime=0, si_stime=4} ---
[   42.723976][ T3636] Cache volume key already in use (9p,(null),)
[pid  3605] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  3605] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3605] close(3)                    = 0
[pid  3605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3641
./strace-static-x86_64: Process 3641 attached
[pid  3641] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3641] setpgid(0, 0)               = 0
[pid  3641] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3641] write(3, "1000", 4)         = 4
[pid  3641] close(3)                    = 0
[pid  3641] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3641] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3641] pipe2([3, 4], 0)            = 0
[pid  3641] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3637] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3637] exit_group(0)               = ?
[pid  3637] +++ exited with 0 +++
[pid  3610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3637, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3610] restart_syscall(<... resuming interrupted clone ...>) = 0
[   42.770508][ T3638] Cache volume key already in use (9p,(null),)
[   42.780994][ T3639] Cache volume key already in use (9p,(null),)
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3
[pid  3610] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3610] close(3)                    = 0
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3642
./strace-static-x86_64: Process 3642 attached
[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] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3642] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3642] pipe2([3, 4], 0)            = 0
[pid  3642] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3636] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3636] exit_group(0)               = ?
[pid  3636] +++ exited with 0 +++
[pid  3606] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3636, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3606] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3
[pid  3606] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3606] close(3)                    = 0
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3643
./strace-static-x86_64: Process 3643 attached
[pid  3643] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3643] setpgid(0, 0)               = 0
[pid  3643] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3643] write(3, "1000", 4)         = 4
[pid  3643] close(3)                    = 0
[pid  3643] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3643] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3643] pipe2([3, 4], 0)            = 0
[pid  3643] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3638] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3638] exit_group(0)               = ?
[pid  3638] +++ exited with 0 +++
[pid  3608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3638, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3608] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3608] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3
[pid  3608] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3608] close(3)                    = 0
[pid  3639] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3639] exit_group(0)               = ?
[pid  3608] <... clone resumed>, child_tidptr=0x55555737d690) = 3644
[pid  3639] +++ exited with 0 +++
[pid  3607] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3639, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3607] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3607] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3
[pid  3607] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3607] close(3)                    = 0
[pid  3607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3645
./strace-static-x86_64: Process 3645 attached
./strace-static-x86_64: Process 3644 attached
[pid  3645] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3644] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3645] <... prctl resumed>)        = 0
[pid  3644] <... prctl resumed>)        = 0
[pid  3645] setpgid(0, 0 <unfinished ...>
[pid  3644] setpgid(0, 0 <unfinished ...>
[pid  3645] <... setpgid resumed>)      = 0
[pid  3644] <... setpgid resumed>)      = 0
[pid  3645] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3644] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3645] <... openat resumed>)       = 3
[pid  3644] <... openat resumed>)       = 3
[pid  3645] write(3, "1000", 4 <unfinished ...>
[pid  3644] write(3, "1000", 4 <unfinished ...>
[pid  3645] <... write resumed>)        = 4
[pid  3644] <... write resumed>)        = 4
[pid  3645] close(3 <unfinished ...>
[pid  3644] close(3 <unfinished ...>
[pid  3645] <... close resumed>)        = 0
[pid  3644] <... close resumed>)        = 0
[pid  3640] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3644] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3645] mkdir("./file0", 0777 <unfinished ...>
[pid  3644] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3645] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3644] pipe2( <unfinished ...>
[pid  3640] exit_group(0 <unfinished ...>
[pid  3644] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3644] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3640] <... exit_group resumed>)   = ?
[pid  3645] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3645] pipe2( <unfinished ...>
[pid  3640] +++ exited with 0 +++
[pid  3645] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3645] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3611] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3640, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3611] restart_syscall(<... resuming interrupted clone ...>) = 0
[   42.981310][ T3641] Cache volume key already in use (9p,(null),)
[   42.988601][ T3642] Cache volume key already in use (9p,(null),)
[pid  3611] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3
[pid  3611] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3611] close(3)                    = 0
[pid  3611] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3646
./strace-static-x86_64: Process 3646 attached
[pid  3646] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3646] setpgid(0, 0)               = 0
[pid  3646] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3646] write(3, "1000", 4)         = 4
[pid  3646] close(3)                    = 0
[pid  3646] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3646] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3646] pipe2([3, 4], 0)            = 0
[pid  3646] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3642] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3642] exit_group(0)               = ?
[pid  3642] +++ exited with 0 +++
[pid  3610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3642, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3610] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3
[pid  3610] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3610] close(3)                    = 0
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3647
./strace-static-x86_64: Process 3647 attached
[pid  3641] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3647] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3641] exit_group(0 <unfinished ...>
[pid  3647] <... prctl resumed>)        = 0
[pid  3641] <... exit_group resumed>)   = ?
[pid  3647] setpgid(0, 0 <unfinished ...>
[pid  3641] +++ exited with 0 +++
[pid  3647] <... setpgid resumed>)      = 0
[pid  3647] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3647] write(3, "1000", 4)         = 4
[pid  3647] close(3)                    = 0
[pid  3647] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3647] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3647] pipe2([3, 4], 0)            = 0
[pid  3647] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3605] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3641, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3605] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  3605] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3605] close(3)                    = 0
[pid  3605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3648
./strace-static-x86_64: Process 3648 attached
[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] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3648] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3648] pipe2([3, 4], 0)            = 0
[   43.121340][ T3644] Cache volume key already in use (9p,(null),)
[   43.128817][ T3645] Cache volume key already in use (9p,(null),)
[pid  3648] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3643] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3643] exit_group(0)               = ?
[pid  3643] +++ exited with 0 +++
[pid  3606] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3643, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3606] restart_syscall(<... resuming interrupted clone ...> <unfinished ...>
[pid  3644] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3644] exit_group(0)               = ?
[pid  3644] +++ exited with 0 +++
[pid  3608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3644, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3606] <... restart_syscall resumed>) = 0
[pid  3608] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3
[pid  3608] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR <unfinished ...>
[pid  3608] close(3)                    = 0
[pid  3608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3649
[pid  3606] <... openat resumed>)       = 3
[pid  3606] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3606] close(3)                    = 0
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3650
./strace-static-x86_64: Process 3649 attached
[pid  3649] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3649] setpgid(0, 0)               = 0
[pid  3649] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3649] write(3, "1000", 4)         = 4
[pid  3649] close(3)                    = 0
[pid  3649] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3649] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3649] pipe2([3, 4], 0)            = 0
[pid  3649] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"..../strace-static-x86_64: Process 3650 attached
 <unfinished ...>
[pid  3650] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3650] setpgid(0, 0)               = 0
[pid  3650] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3650] write(3, "1000", 4)         = 4
[pid  3650] close(3)                    = 0
[   43.185315][ T3647] Cache volume key already in use (9p,(null),)
[pid  3650] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3650] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3650] pipe2([3, 4], 0)            = 0
[pid  3650] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3645] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3645] exit_group(0)               = ?
[pid  3645] +++ exited with 0 +++
[pid  3607] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3645, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3607] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3607] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3
[pid  3607] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3607] close(3)                    = 0
[pid  3607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3646] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3646] exit_group(0)               = ?
[pid  3646] +++ exited with 0 +++
[pid  3611] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3646, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3607] <... clone resumed>, child_tidptr=0x55555737d690) = 3651
./strace-static-x86_64: Process 3651 attached
[pid  3611] openat(AT_FDCWD, "/dev/loop5", O_RDWR <unfinished ...>
[pid  3651] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3611] <... openat resumed>)       = 3
[pid  3651] <... prctl resumed>)        = 0
[pid  3611] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3651] setpgid(0, 0 <unfinished ...>
[pid  3611] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3651] <... setpgid resumed>)      = 0
[pid  3611] close(3 <unfinished ...>
[pid  3651] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[   43.265749][ T3648] Cache volume key already in use (9p,(null),)
[pid  3611] <... close resumed>)        = 0
[pid  3651] <... openat resumed>)       = 3
[pid  3611] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3651] write(3, "1000", 4)         = 4
[pid  3611] <... clone resumed>, child_tidptr=0x55555737d690) = 3652
[pid  3651] close(3)                    = 0
[pid  3651] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3651] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3651] pipe2(./strace-static-x86_64: Process 3652 attached
[3, 4], 0)            = 0
[pid  3651] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3652] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3652] setpgid(0, 0)               = 0
[pid  3652] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3652] write(3, "1000", 4)         = 4
[pid  3652] close(3)                    = 0
[pid  3652] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3652] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3652] pipe2([3, 4], 0)            = 0
[pid  3652] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3647] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3647] exit_group(0)               = ?
[pid  3647] +++ exited with 0 +++
[pid  3610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3647, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3
[pid  3610] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3610] close(3)                    = 0
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3653 attached
 <unfinished ...>
[pid  3653] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3653] setpgid(0, 0)               = 0
[pid  3653] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3653] write(3, "1000", 4)         = 4
[pid  3653] close(3)                    = 0
[pid  3653] mkdir("./file0", 0777 <unfinished ...>
[pid  3648] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3610] <... clone resumed>, child_tidptr=0x55555737d690) = 3653
[pid  3653] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3653] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3653] pipe2([3, 4], 0)            = 0
[pid  3653] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[   43.386838][ T3649] Cache volume key already in use (9p,(null),)
[pid  3648] exit_group(0)               = ?
[pid  3648] +++ exited with 0 +++
[pid  3605] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3648, si_uid=0, si_status=0, si_utime=0, si_stime=4} ---
[pid  3605] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  3605] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3605] close(3)                    = 0
[pid  3605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3654
./strace-static-x86_64: Process 3654 attached
[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 <unfinished ...>
[   43.442475][ T3651] Cache volume key already in use (9p,(null),)
[   43.453291][ T3652] Cache volume key already in use (9p,(null),)
[pid  3650] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3654] <... openat resumed>)       = 3
[pid  3650] exit_group(0 <unfinished ...>
[pid  3654] write(3, "1000", 4 <unfinished ...>
[pid  3650] <... exit_group resumed>)   = ?
[pid  3654] <... write resumed>)        = 4
[pid  3654] close(3 <unfinished ...>
[pid  3650] +++ exited with 0 +++
[pid  3654] <... close resumed>)        = 0
[pid  3606] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3650, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3654] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3654] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3654] pipe2([3, 4], 0)            = 0
[pid  3654] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3
[pid  3606] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3606] close(3)                    = 0
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3655
[pid  3649] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3649] exit_group(0)               = ?
[pid  3649] +++ exited with 0 +++
[pid  3608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3649, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3608] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3
[pid  3608] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3608] close(3)                    = 0
[pid  3608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3656
./strace-static-x86_64: Process 3656 attached
./strace-static-x86_64: Process 3655 attached
[pid  3656] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3656] setpgid(0, 0 <unfinished ...>
[pid  3655] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3656] <... setpgid resumed>)      = 0
[pid  3655] <... prctl resumed>)        = 0
[pid  3656] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3655] setpgid(0, 0 <unfinished ...>
[pid  3656] <... openat resumed>)       = 3
[pid  3655] <... setpgid resumed>)      = 0
[pid  3656] write(3, "1000", 4 <unfinished ...>
[pid  3655] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3656] <... write resumed>)        = 4
[pid  3655] <... openat resumed>)       = 3
[pid  3656] close(3 <unfinished ...>
[pid  3655] write(3, "1000", 4 <unfinished ...>
[pid  3656] <... close resumed>)        = 0
[pid  3655] <... write resumed>)        = 4
[pid  3656] mkdir("./file0", 0777 <unfinished ...>
[pid  3655] close(3 <unfinished ...>
[pid  3656] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3655] <... close resumed>)        = 0
[pid  3656] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3655] mkdir("./file0", 0777 <unfinished ...>
[pid  3656] pipe2( <unfinished ...>
[pid  3655] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3656] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3655] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3656] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3655] pipe2( <unfinished ...>
[pid  3652] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3655] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3652] exit_group(0 <unfinished ...>
[pid  3655] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3652] <... exit_group resumed>)   = ?
[pid  3652] +++ exited with 0 +++
[pid  3611] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3652, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3611] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3611] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3
[pid  3611] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3611] close(3)                    = 0
[pid  3611] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3657
./strace-static-x86_64: Process 3657 attached
[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] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3657] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3657] pipe2([3, 4], 0)            = 0
[pid  3657] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3651] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3651] exit_group(0)               = ?
[pid  3651] +++ exited with 0 +++
[pid  3607] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3651, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3607] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3
[pid  3607] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3607] close(3)                    = 0
[pid  3607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3658
./strace-static-x86_64: Process 3658 attached
[pid  3658] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3658] setpgid(0, 0)               = 0
[pid  3658] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3658] write(3, "1000", 4)         = 4
[pid  3658] close(3)                    = 0
[pid  3658] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[   43.660521][ T3654] Cache volume key already in use (9p,(null),)
[   43.693350][ T3656] Cache volume key already in use (9p,(null),)
[   43.694017][ T3657] Cache volume key already in use (9p,(null),)
[pid  3658] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3658] pipe2( <unfinished ...>
[pid  3653] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3658] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3653] exit_group(0 <unfinished ...>
[pid  3658] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3653] <... exit_group resumed>)   = ?
[pid  3653] +++ exited with 0 +++
[pid  3610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3653, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3610] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3
[pid  3610] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3610] close(3)                    = 0
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3659
./strace-static-x86_64: Process 3659 attached
[pid  3659] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3659] setpgid(0, 0)               = 0
[pid  3659] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[   43.708912][ T3655] Cache volume key already in use (9p,(null),)
[pid  3659] write(3, "1000", 4)         = 4
[pid  3659] close(3)                    = 0
[pid  3659] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3659] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3659] pipe2([3, 4], 0)            = 0
[pid  3659] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3654] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3654] exit_group(0)               = ?
[pid  3654] +++ exited with 0 +++
[pid  3605] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3654, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3605] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  3605] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3605] close(3)                    = 0
[pid  3605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3660
./strace-static-x86_64: Process 3660 attached
[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] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3660] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3660] pipe2([3, 4], 0)            = 0
[pid  3655] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3660] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3655] exit_group(0)               = ?
[pid  3655] +++ exited with 0 +++
[pid  3657] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3606] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3655, si_uid=0, si_status=0, si_utime=0, si_stime=4} ---
[pid  3657] exit_group(0)               = ?
[pid  3657] +++ exited with 0 +++
[pid  3611] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3657, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3611] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3
[pid  3611] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3611] close(3)                    = 0
[pid  3611] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3661
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3
[pid  3606] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3606] close(3)                    = 0
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3662
./strace-static-x86_64: Process 3662 attached
./strace-static-x86_64: Process 3661 attached
[pid  3662] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3661] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3662] <... prctl resumed>)        = 0
[pid  3661] setpgid(0, 0 <unfinished ...>
[pid  3662] setpgid(0, 0)               = 0
[pid  3661] <... setpgid resumed>)      = 0
[pid  3662] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3661] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3662] <... openat resumed>)       = 3
[pid  3661] <... openat resumed>)       = 3
[pid  3662] write(3, "1000", 4 <unfinished ...>
[pid  3661] write(3, "1000", 4 <unfinished ...>
[pid  3662] <... write resumed>)        = 4
[pid  3662] close(3 <unfinished ...>
[pid  3661] <... write resumed>)        = 4
[pid  3662] <... close resumed>)        = 0
[pid  3661] close(3 <unfinished ...>
[pid  3662] mkdir("./file0", 0777 <unfinished ...>
[pid  3661] <... close resumed>)        = 0
[pid  3662] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3661] mkdir("./file0", 0777 <unfinished ...>
[pid  3662] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3661] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3662] pipe2( <unfinished ...>
[pid  3661] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3662] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3662] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3661] pipe2([3, 4], 0)            = 0
[pid  3661] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3656] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3656] exit_group(0)               = ?
[pid  3656] +++ exited with 0 +++
[pid  3608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3656, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3608] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3
[pid  3608] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3608] close(3)                    = 0
[pid  3608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3663
./strace-static-x86_64: Process 3663 attached
[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] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3663] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3663] pipe2( <unfinished ...>
[pid  3658] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3663] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3658] exit_group(0 <unfinished ...>
[   43.920734][ T3659] Cache volume key already in use (9p,(null),)
[pid  3663] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3658] <... exit_group resumed>)   = ?
[pid  3658] +++ exited with 0 +++
[pid  3607] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3658, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3607] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3607] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3
[pid  3607] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3607] close(3)                    = 0
[pid  3607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3659] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3607] <... clone resumed>, child_tidptr=0x55555737d690) = 3664
./strace-static-x86_64: Process 3664 attached
[pid  3659] exit_group(0)               = ?
[   43.962437][ T3660] Cache volume key already in use (9p,(null),)
[   43.969063][ T3661] Cache volume key already in use (9p,(null),)
[pid  3664] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3659] +++ exited with 0 +++
[pid  3664] <... prctl resumed>)        = 0
[pid  3664] setpgid(0, 0)               = 0
[pid  3664] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3664] write(3, "1000", 4 <unfinished ...>
[pid  3610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3659, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3664] <... write resumed>)        = 4
[pid  3664] close(3)                    = 0
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR <unfinished ...>
[pid  3664] mkdir("./file0", 0777 <unfinished ...>
[pid  3610] <... openat resumed>)       = 3
[pid  3664] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3610] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3664] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3610] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3664] pipe2( <unfinished ...>
[pid  3610] close(3 <unfinished ...>
[pid  3664] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3610] <... close resumed>)        = 0
[pid  3664] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3665
./strace-static-x86_64: Process 3665 attached
[pid  3665] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3665] setpgid(0, 0)               = 0
[pid  3665] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3665] write(3, "1000", 4)         = 4
[pid  3665] close(3)                    = 0
[pid  3665] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3665] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3665] pipe2([3, 4], 0)            = 0
[   44.007709][ T3663] Cache volume key already in use (9p,(null),)
[pid  3665] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3662] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3662] exit_group(0)               = ?
[pid  3662] +++ exited with 0 +++
[pid  3606] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3662, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3
[pid  3606] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3606] close(3)                    = 0
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3666
./strace-static-x86_64: Process 3666 attached
[pid  3666] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3660] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3666] <... prctl resumed>)        = 0
[pid  3660] exit_group(0 <unfinished ...>
[pid  3666] setpgid(0, 0 <unfinished ...>
[pid  3660] <... exit_group resumed>)   = ?
[pid  3666] <... setpgid resumed>)      = 0
[pid  3660] +++ exited with 0 +++
[pid  3666] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3605] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3660, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3666] write(3, "1000", 4 <unfinished ...>
[pid  3605] restart_syscall(<... resuming interrupted clone ...> <unfinished ...>
[pid  3666] <... write resumed>)        = 4
[pid  3605] <... restart_syscall resumed>) = 0
[pid  3666] close(3)                    = 0
[pid  3666] mkdir("./file0", 0777 <unfinished ...>
[pid  3605] openat(AT_FDCWD, "/dev/loop0", O_RDWR <unfinished ...>
[pid  3666] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3605] <... openat resumed>)       = 3
[pid  3666] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3605] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3666] pipe2( <unfinished ...>
[pid  3605] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3666] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3605] close(3 <unfinished ...>
[pid  3666] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3605] <... close resumed>)        = 0
[pid  3605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3667
./strace-static-x86_64: Process 3667 attached
[pid  3667] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3667] setpgid(0, 0)               = 0
[pid  3667] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3667] write(3, "1000", 4)         = 4
[pid  3667] close(3)                    = 0
[pid  3667] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3667] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3667] pipe2([3, 4], 0)            = 0
[pid  3667] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3661] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3661] exit_group(0)               = ?
[pid  3661] +++ exited with 0 +++
[pid  3611] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3661, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3611] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3611] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3
[pid  3611] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3611] close(3)                    = 0
[pid  3611] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3668
./strace-static-x86_64: Process 3668 attached
[pid  3668] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3668] setpgid(0, 0)               = 0
[pid  3668] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3668] write(3, "1000", 4)         = 4
[pid  3668] close(3)                    = 0
[pid  3668] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3668] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3668] pipe2([3, 4], 0)            = 0
[pid  3668] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3663] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3663] exit_group(0)               = ?
[pid  3663] +++ exited with 0 +++
[pid  3608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3663, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3608] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3608] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3
[pid  3608] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3608] close(3)                    = 0
[pid  3608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3669
[pid  3664] <... mount resumed>)        = -1 EFAULT (Bad address)
./strace-static-x86_64: Process 3669 attached
[   44.197832][ T3665] Cache volume key already in use (9p,(null),)
[   44.207281][ T3666] Cache volume key already in use (9p,(null),)
[   44.213806][ T3667] Cache volume key already in use (9p,(null),)
[pid  3669] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3664] exit_group(0)               = ?
[pid  3669] <... prctl resumed>)        = 0
[pid  3664] +++ exited with 0 +++
[pid  3669] setpgid(0, 0)               = 0
[pid  3607] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3664, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3669] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3607] restart_syscall(<... resuming interrupted clone ...> <unfinished ...>
[pid  3669] <... openat resumed>)       = 3
[pid  3607] <... restart_syscall resumed>) = 0
[pid  3669] write(3, "1000", 4)         = 4
[pid  3669] close(3 <unfinished ...>
[pid  3607] openat(AT_FDCWD, "/dev/loop2", O_RDWR <unfinished ...>
[pid  3669] <... close resumed>)        = 0
[pid  3607] <... openat resumed>)       = 3
[pid  3669] mkdir("./file0", 0777 <unfinished ...>
[pid  3607] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3669] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3607] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3669] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3607] close(3 <unfinished ...>
[pid  3669] pipe2( <unfinished ...>
[pid  3607] <... close resumed>)        = 0
[pid  3669] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3669] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3607] <... clone resumed>, child_tidptr=0x55555737d690) = 3670
./strace-static-x86_64: Process 3670 attached
[pid  3670] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3670] setpgid(0, 0)               = 0
[pid  3670] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3670] write(3, "1000", 4)         = 4
[pid  3670] close(3)                    = 0
[pid  3670] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3670] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3670] pipe2([3, 4], 0)            = 0
[pid  3670] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3667] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3667] exit_group(0)               = ?
[pid  3667] +++ exited with 0 +++
[pid  3605] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3667, si_uid=0, si_status=0, si_utime=0, si_stime=4} ---
[pid  3605] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  3605] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3605] close(3)                    = 0
[pid  3605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3671
./strace-static-x86_64: Process 3671 attached
[pid  3671] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3671] setpgid(0, 0)               = 0
[pid  3666] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3671] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3666] exit_group(0 <unfinished ...>
[pid  3671] <... openat resumed>)       = 3
[pid  3666] <... exit_group resumed>)   = ?
[pid  3671] write(3, "1000", 4)         = 4
[pid  3671] close(3 <unfinished ...>
[pid  3666] +++ exited with 0 +++
[pid  3671] <... close resumed>)        = 0
[pid  3606] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3666, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3671] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3671] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3671] pipe2([3, 4], 0)            = 0
[pid  3671] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3
[pid  3606] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3606] close(3)                    = 0
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3672
./strace-static-x86_64: Process 3672 attached
[pid  3672] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3665] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3672] <... prctl resumed>)        = 0
[pid  3665] exit_group(0 <unfinished ...>
[pid  3672] setpgid(0, 0 <unfinished ...>
[pid  3665] <... exit_group resumed>)   = ?
[pid  3672] <... setpgid resumed>)      = 0
[pid  3672] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3665] +++ exited with 0 +++
[pid  3672] <... openat resumed>)       = 3
[pid  3672] write(3, "1000", 4)         = 4
[pid  3672] close(3)                    = 0
[pid  3610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3665, si_uid=0, si_status=0, si_utime=0, si_stime=4} ---
[pid  3672] mkdir("./file0", 0777 <unfinished ...>
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR <unfinished ...>
[pid  3672] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3610] <... openat resumed>)       = 3
[pid  3672] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3610] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3672] pipe2( <unfinished ...>
[pid  3610] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3672] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3610] close(3 <unfinished ...>
[pid  3672] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3610] <... close resumed>)        = 0
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3673
./strace-static-x86_64: Process 3673 attached
[pid  3673] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3673] setpgid(0, 0)               = 0
[pid  3673] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3673] write(3, "1000", 4 <unfinished ...>
[pid  3668] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3673] <... write resumed>)        = 4
[pid  3668] exit_group(0 <unfinished ...>
[pid  3673] close(3 <unfinished ...>
[pid  3668] <... exit_group resumed>)   = ?
[pid  3673] <... close resumed>)        = 0
[pid  3668] +++ exited with 0 +++
[pid  3673] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3673] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3673] pipe2([3, 4], 0)            = 0
[pid  3673] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3611] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3668, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3611] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3
[pid  3611] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3611] close(3)                    = 0
[pid  3611] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3674
./strace-static-x86_64: Process 3674 attached
[   44.441760][ T3672] Cache volume key already in use (9p,(null),)
[   44.443123][ T3669] Cache volume key already in use (9p,(null),)
[   44.454186][ T3673] Cache volume key already in use (9p,(null),)
[   44.456853][ T3670] Cache volume key already in use (9p,(null),)
[pid  3674] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3674] setpgid(0, 0)               = 0
[pid  3673] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3674] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3673] exit_group(0 <unfinished ...>
[pid  3674] <... openat resumed>)       = 3
[pid  3673] <... exit_group resumed>)   = ?
[pid  3674] write(3, "1000", 4)         = 4
[pid  3674] close(3 <unfinished ...>
[pid  3673] +++ exited with 0 +++
[pid  3674] <... close resumed>)        = 0
[pid  3610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3673, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3674] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3674] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3674] pipe2([3, 4], 0)            = 0
[pid  3674] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3
[pid  3610] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3610] close(3)                    = 0
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3675 attached
 <unfinished ...>
[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] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3675] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3675] pipe2([3, 4], 0)            = 0
[pid  3675] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3610] <... clone resumed>, child_tidptr=0x55555737d690) = 3675
[pid  3671] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3671] exit_group(0)               = ?
[pid  3671] +++ exited with 0 +++
[pid  3605] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3671, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3605] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3672] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3672] exit_group(0)               = ?
[pid  3672] +++ exited with 0 +++
[pid  3606] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3672, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3606] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3605] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3
[pid  3605] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3606] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3605] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3606] close(3)                    = 0
[pid  3605] close(3)                    = 0
[pid  3605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3676 attached
 <unfinished ...>
[pid  3670] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3670] exit_group(0 <unfinished ...>
[pid  3605] <... clone resumed>, child_tidptr=0x55555737d690) = 3676
[pid  3676] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3670] <... exit_group resumed>)   = ?
[pid  3676] <... prctl resumed>)        = 0
[pid  3670] +++ exited with 0 +++
[pid  3676] setpgid(0, 0 <unfinished ...>
[pid  3607] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3670, si_uid=0, si_status=0, si_utime=0, si_stime=5} ---
[pid  3606] <... clone resumed>, child_tidptr=0x55555737d690) = 3677
[pid  3676] <... setpgid resumed>)      = 0
[pid  3676] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3676] write(3, "1000", 4)         = 4
[pid  3676] close(3)                    = 0
[pid  3607] openat(AT_FDCWD, "/dev/loop2", O_RDWR <unfinished ...>
[pid  3676] mkdir("./file0", 0777 <unfinished ...>
[pid  3607] <... openat resumed>)       = 3
[pid  3676] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3607] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3676] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3607] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3676] pipe2( <unfinished ...>
[pid  3607] close(3 <unfinished ...>
[pid  3676] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3607] <... close resumed>)        = 0
[pid  3676] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3678
./strace-static-x86_64: Process 3677 attached
[pid  3677] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 3678 attached
) = 0
[pid  3678] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3677] setpgid(0, 0 <unfinished ...>
[pid  3669] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3678] <... prctl resumed>)        = 0
[pid  3669] exit_group(0 <unfinished ...>
[pid  3678] setpgid(0, 0 <unfinished ...>
[pid  3669] <... exit_group resumed>)   = ?
[pid  3678] <... setpgid resumed>)      = 0
[pid  3669] +++ exited with 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] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3678] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3678] pipe2( <unfinished ...>
[pid  3677] <... setpgid resumed>)      = 0
[pid  3608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3669, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3678] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3678] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3677] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3677] write(3, "1000", 4 <unfinished ...>
[pid  3608] openat(AT_FDCWD, "/dev/loop3", O_RDWR <unfinished ...>
[pid  3677] <... write resumed>)        = 4
[pid  3608] <... openat resumed>)       = 3
[pid  3677] close(3 <unfinished ...>
[pid  3608] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3677] <... close resumed>)        = 0
[pid  3608] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3677] mkdir("./file0", 0777 <unfinished ...>
[pid  3608] close(3 <unfinished ...>
[pid  3677] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3608] <... close resumed>)        = 0
[pid  3677] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3677] pipe2([3, 4], 0)            = 0
[pid  3608] <... clone resumed>, child_tidptr=0x55555737d690) = 3679
[pid  3677] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"..../strace-static-x86_64: Process 3679 attached
 <unfinished ...>
[pid  3679] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3679] setpgid(0, 0)               = 0
[pid  3679] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3679] write(3, "1000", 4)         = 4
[pid  3679] close(3)                    = 0
[pid  3679] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3679] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3679] pipe2([3, 4], 0)            = 0
[pid  3679] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3674] <... mount resumed>)        = -1 EFAULT (Bad address)
[   44.645314][ T3675] Cache volume key already in use (9p,(null),)
[   44.647503][ T3676] Cache volume key already in use (9p,(null),)
[   44.673639][ T3678] Cache volume key already in use (9p,(null),)
[pid  3674] exit_group(0)               = ?
[pid  3674] +++ exited with 0 +++
[pid  3611] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3674, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3611] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3611] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3
[pid  3611] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3611] close(3 <unfinished ...>
[pid  3675] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3611] <... close resumed>)        = 0
[pid  3675] exit_group(0 <unfinished ...>
[pid  3611] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3680 attached
 <unfinished ...>
[pid  3675] <... exit_group resumed>)   = ?
[pid  3680] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3611] <... clone resumed>, child_tidptr=0x55555737d690) = 3680
[pid  3680] <... prctl resumed>)        = 0
[pid  3675] +++ exited with 0 +++
[pid  3680] setpgid(0, 0 <unfinished ...>
[pid  3610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3675, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3680] <... setpgid resumed>)      = 0
[pid  3680] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR <unfinished ...>
[pid  3680] write(3, "1000", 4 <unfinished ...>
[pid  3610] <... openat resumed>)       = 3
[pid  3680] <... write resumed>)        = 4
[pid  3610] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3680] close(3 <unfinished ...>
[pid  3610] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3680] <... close resumed>)        = 0
[pid  3610] close(3 <unfinished ...>
[pid  3680] mkdir("./file0", 0777 <unfinished ...>
[pid  3610] <... close resumed>)        = 0
[pid  3680] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3680] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3680] pipe2([3, 4], 0)            = 0
[pid  3680] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3676] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3676] exit_group(0./strace-static-x86_64: Process 3681 attached
)               = ?
[pid  3610] <... clone resumed>, child_tidptr=0x55555737d690) = 3681
[pid  3676] +++ exited with 0 +++
[pid  3681] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3605] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3676, si_uid=0, si_status=0, si_utime=0, si_stime=4} ---
[pid  3681] <... prctl resumed>)        = 0
[pid  3605] restart_syscall(<... resuming interrupted clone ...> <unfinished ...>
[pid  3681] setpgid(0, 0 <unfinished ...>
[pid  3605] <... restart_syscall resumed>) = 0
[pid  3681] <... setpgid resumed>)      = 0
[pid  3681] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3605] openat(AT_FDCWD, "/dev/loop0", O_RDWR <unfinished ...>
[pid  3681] <... openat resumed>)       = 3
[pid  3605] <... openat resumed>)       = 3
[pid  3605] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3605] close(3)                    = 0
[pid  3605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3682
./strace-static-x86_64: Process 3682 attached
[pid  3681] write(3, "1000", 4)         = 4
[pid  3681] close(3 <unfinished ...>
[pid  3682] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3681] <... close resumed>)        = 0
[pid  3682] <... prctl resumed>)        = 0
[pid  3681] mkdir("./file0", 0777 <unfinished ...>
[pid  3682] setpgid(0, 0 <unfinished ...>
[pid  3681] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3682] <... setpgid resumed>)      = 0
[pid  3681] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3682] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3681] pipe2( <unfinished ...>
[pid  3682] <... openat resumed>)       = 3
[pid  3681] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3682] write(3, "1000", 4 <unfinished ...>
[pid  3681] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3682] <... write resumed>)        = 4
[pid  3682] close(3)                    = 0
[pid  3682] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3682] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3678] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3682] pipe2([3, 4], 0)            = 0
[   44.793683][ T3679] Cache volume key already in use (9p,(null),)
[pid  3682] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3678] exit_group(0)               = ?
[pid  3678] +++ exited with 0 +++
[pid  3607] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3678, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3607] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3607] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3
[pid  3607] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3607] close(3)                    = 0
[pid  3607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3683
./strace-static-x86_64: Process 3683 attached
[pid  3677] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3677] exit_group(0)               = ?
[pid  3683] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3677] +++ exited with 0 +++
[pid  3683] <... prctl resumed>)        = 0
[pid  3606] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3677, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3606] restart_syscall(<... resuming interrupted clone ...> <unfinished ...>
[pid  3683] setpgid(0, 0 <unfinished ...>
[pid  3606] <... restart_syscall resumed>) = 0
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3
[pid  3606] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3606] close(3 <unfinished ...>
[pid  3683] <... setpgid resumed>)      = 0
[pid  3606] <... close resumed>)        = 0
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3684
[pid  3683] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3683] write(3, "1000", 4)         = 4
[pid  3683] close(3)                    = 0
[pid  3683] mkdir("./file0", 0777./strace-static-x86_64: Process 3684 attached
)      = -1 EEXIST (File exists)
[pid  3684] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3683] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3684] <... prctl resumed>)        = 0
[pid  3683] pipe2( <unfinished ...>
[pid  3684] setpgid(0, 0 <unfinished ...>
[pid  3683] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3684] <... setpgid resumed>)      = 0
[pid  3683] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[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] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3684] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3684] pipe2([3, 4], 0)            = 0
[pid  3684] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3679] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3679] exit_group(0)               = ?
[pid  3679] +++ exited with 0 +++
[pid  3608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3679, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3608] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3608] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3
[pid  3608] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3608] close(3)                    = 0
[pid  3608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3685
./strace-static-x86_64: Process 3685 attached
[pid  3685] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3685] setpgid(0, 0)               = 0
[pid  3685] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3685] write(3, "1000", 4)         = 4
[pid  3685] close(3)                    = 0
[pid  3685] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3685] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3685] pipe2([3, 4], 0)            = 0
[pid  3685] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3680] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3680] exit_group(0)               = ?
[pid  3680] +++ exited with 0 +++
[pid  3611] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3680, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[   44.951042][ T3681] Cache volume key already in use (9p,(null),)
[   44.958432][ T3682] Cache volume key already in use (9p,(null),)
[pid  3611] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3
[pid  3611] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3611] close(3)                    = 0
[pid  3611] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3686
./strace-static-x86_64: Process 3686 attached
[pid  3686] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3686] setpgid(0, 0)               = 0
[pid  3686] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3686] write(3, "1000", 4)         = 4
[pid  3686] close(3)                    = 0
[pid  3686] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3686] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3686] pipe2([3, 4], 0)            = 0
[pid  3686] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3682] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3682] exit_group(0)               = ?
[pid  3682] +++ exited with 0 +++
[pid  3605] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3682, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[   45.000940][ T3684] Cache volume key already in use (9p,(null),)
[pid  3605] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  3605] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3605] close(3)                    = 0
[pid  3605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3687
./strace-static-x86_64: Process 3687 attached
[pid  3687] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3681] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3687] <... prctl resumed>)        = 0
[pid  3681] exit_group(0 <unfinished ...>
[pid  3687] setpgid(0, 0 <unfinished ...>
[pid  3681] <... exit_group resumed>)   = ?
[pid  3687] <... setpgid resumed>)      = 0
[pid  3681] +++ exited with 0 +++
[pid  3687] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3681, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3687] <... openat resumed>)       = 3
[pid  3687] write(3, "1000", 4)         = 4
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR <unfinished ...>
[pid  3687] close(3 <unfinished ...>
[pid  3610] <... openat resumed>)       = 3
[pid  3687] <... close resumed>)        = 0
[pid  3610] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3687] mkdir("./file0", 0777 <unfinished ...>
[pid  3610] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3687] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3610] close(3 <unfinished ...>
[pid  3687] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3610] <... close resumed>)        = 0
[pid  3687] pipe2( <unfinished ...>
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3687] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3683] <... mount resumed>)        = -1 EFAULT (Bad address)
./strace-static-x86_64: Process 3688 attached
[pid  3687] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3683] exit_group(0 <unfinished ...>
[pid  3610] <... clone resumed>, child_tidptr=0x55555737d690) = 3688
[   45.070498][ T3685] Cache volume key already in use (9p,(null),)
[pid  3688] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3683] <... exit_group resumed>)   = ?
[pid  3683] +++ exited with 0 +++
[pid  3688] <... prctl resumed>)        = 0
[pid  3688] setpgid(0, 0 <unfinished ...>
[pid  3607] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3683, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3688] <... setpgid resumed>)      = 0
[pid  3607] restart_syscall(<... resuming interrupted clone ...> <unfinished ...>
[pid  3688] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3607] <... restart_syscall resumed>) = 0
[pid  3688] <... openat resumed>)       = 3
[pid  3684] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3688] write(3, "1000", 4 <unfinished ...>
[pid  3684] exit_group(0 <unfinished ...>
[pid  3688] <... write resumed>)        = 4
[pid  3688] close(3 <unfinished ...>
[pid  3684] <... exit_group resumed>)   = ?
[pid  3688] <... close resumed>)        = 0
[pid  3688] mkdir("./file0", 0777 <unfinished ...>
[pid  3684] +++ exited with 0 +++
[pid  3688] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3688] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3688] pipe2([3, 4], 0)            = 0
[pid  3688] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3606] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3684, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3607] openat(AT_FDCWD, "/dev/loop2", O_RDWR <unfinished ...>
[pid  3606] restart_syscall(<... resuming interrupted clone ...> <unfinished ...>
[pid  3607] <... openat resumed>)       = 3
[pid  3606] <... restart_syscall resumed>) = 0
[pid  3607] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3607] close(3)                    = 0
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR <unfinished ...>
[pid  3607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3606] <... openat resumed>)       = 3
[pid  3606] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3607] <... clone resumed>, child_tidptr=0x55555737d690) = 3689
[pid  3606] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3606] close(3)                    = 0
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3689 attached
 <unfinished ...>
[pid  3689] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3689] setpgid(0, 0)               = 0
[pid  3606] <... clone resumed>, child_tidptr=0x55555737d690) = 3690
[pid  3689] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 3690 attached
) = 3
[pid  3690] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3689] write(3, "1000", 4 <unfinished ...>
[pid  3690] <... prctl resumed>)        = 0
[pid  3689] <... write resumed>)        = 4
[pid  3690] setpgid(0, 0 <unfinished ...>
[pid  3689] close(3 <unfinished ...>
[pid  3690] <... setpgid resumed>)      = 0
[pid  3689] <... close resumed>)        = 0
[pid  3690] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3689] mkdir("./file0", 0777 <unfinished ...>
[pid  3690] <... openat resumed>)       = 3
[pid  3689] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3690] write(3, "1000", 4 <unfinished ...>
[pid  3689] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3690] <... write resumed>)        = 4
[pid  3689] pipe2( <unfinished ...>
[pid  3690] close(3 <unfinished ...>
[pid  3689] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3690] <... close resumed>)        = 0
[pid  3689] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3690] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3690] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3690] pipe2([3, 4], 0)            = 0
[pid  3690] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3685] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3685] exit_group(0)               = ?
[pid  3685] +++ exited with 0 +++
[pid  3608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3685, si_uid=0, si_status=0, si_utime=1, si_stime=3} ---
[pid  3608] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3
[pid  3608] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3608] close(3)                    = 0
[pid  3608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3691
./strace-static-x86_64: Process 3691 attached
[   45.187939][ T3687] Cache volume key already in use (9p,(null),)
[   45.189222][ T3688] Cache volume key already in use (9p,(null),)
[pid  3691] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3691] setpgid(0, 0)               = 0
[pid  3691] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3691] write(3, "1000", 4)         = 4
[pid  3691] close(3)                    = 0
[pid  3691] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3691] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3691] pipe2([3, 4], 0)            = 0
[pid  3691] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3686] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3686] exit_group(0)               = ?
[pid  3686] +++ exited with 0 +++
[pid  3611] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3686, si_uid=0, si_status=0, si_utime=0, si_stime=4} ---
[pid  3611] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3
[pid  3611] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3611] close(3)                    = 0
[pid  3611] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3692
./strace-static-x86_64: Process 3692 attached
[pid  3688] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3688] exit_group(0 <unfinished ...>
[pid  3692] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3688] <... exit_group resumed>)   = ?
[pid  3692] <... prctl resumed>)        = 0
[pid  3688] +++ exited with 0 +++
[pid  3692] setpgid(0, 0)               = 0
[pid  3692] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3688, si_uid=0, si_status=0, si_utime=1, si_stime=3} ---
[pid  3692] <... openat resumed>)       = 3
[pid  3692] write(3, "1000", 4 <unfinished ...>
[pid  3610] restart_syscall(<... resuming interrupted clone ...> <unfinished ...>
[pid  3692] <... write resumed>)        = 4
[pid  3692] close(3 <unfinished ...>
[pid  3610] <... restart_syscall resumed>) = 0
[pid  3692] <... close resumed>)        = 0
[pid  3692] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3692] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3692] pipe2([3, 4], 0)            = 0
[pid  3692] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[   45.282357][ T3690] Cache volume key already in use (9p,(null),)
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR <unfinished ...>
[pid  3687] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3610] <... openat resumed>)       = 3
[pid  3687] exit_group(0)               = ?
[pid  3687] +++ exited with 0 +++
[pid  3605] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3687, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3605] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3605] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  3605] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3605] close(3)                    = 0
[pid  3605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3693
./strace-static-x86_64: Process 3693 attached
[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 <unfinished ...>
[pid  3610] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3693] <... close resumed>)        = 0
[pid  3693] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3693] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3693] pipe2([3, 4], 0)            = 0
[pid  3693] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3610] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3610] close(3)                    = 0
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3694
./strace-static-x86_64: Process 3694 attached
[pid  3694] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3689] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3694] setpgid(0, 0 <unfinished ...>
[pid  3689] exit_group(0 <unfinished ...>
[pid  3694] <... setpgid resumed>)      = 0
[pid  3689] <... exit_group resumed>)   = ?
[pid  3694] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3689] +++ exited with 0 +++
[pid  3694] <... openat resumed>)       = 3
[pid  3607] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3689, si_uid=0, si_status=0, si_utime=1, si_stime=2} ---
[pid  3607] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3607] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3
[pid  3607] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3694] write(3, "1000", 4 <unfinished ...>
[pid  3607] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3694] <... write resumed>)        = 4
[   45.364768][ T3691] Cache volume key already in use (9p,(null),)
[pid  3607] close(3 <unfinished ...>
[pid  3694] close(3 <unfinished ...>
[pid  3690] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3607] <... close resumed>)        = 0
[pid  3690] exit_group(0 <unfinished ...>
[pid  3607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3690] <... exit_group resumed>)   = ?
[pid  3690] +++ exited with 0 +++
[pid  3607] <... clone resumed>, child_tidptr=0x55555737d690) = 3695
[pid  3606] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3690, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3694] <... close resumed>)        = 0
./strace-static-x86_64: Process 3695 attached
[pid  3694] mkdir("./file0", 0777 <unfinished ...>
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3
[pid  3606] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3606] close(3)                    = 0
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3696
[pid  3694] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3691] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3695] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3694] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3691] exit_group(0 <unfinished ...>
[pid  3695] <... prctl resumed>)        = 0
[pid  3694] pipe2( <unfinished ...>
[pid  3691] <... exit_group resumed>)   = ?
[pid  3695] setpgid(0, 0 <unfinished ...>
[pid  3694] <... pipe2 resumed>[3, 4], 0) = 0
./strace-static-x86_64: Process 3696 attached
[pid  3695] <... setpgid resumed>)      = 0
[pid  3694] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3692] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3691] +++ exited with 0 +++
[pid  3696] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3695] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3692] exit_group(0 <unfinished ...>
[pid  3608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3691, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3696] <... prctl resumed>)        = 0
[pid  3695] <... openat resumed>)       = 3
[pid  3692] <... exit_group resumed>)   = ?
[   45.425354][ T3693] Cache volume key already in use (9p,(null),)
[pid  3696] setpgid(0, 0 <unfinished ...>
[pid  3695] write(3, "1000", 4 <unfinished ...>
[pid  3696] <... setpgid resumed>)      = 0
[pid  3695] <... write resumed>)        = 4
[pid  3692] +++ exited with 0 +++
[pid  3696] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3611] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3692, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3696] <... openat resumed>)       = 3
[pid  3695] close(3 <unfinished ...>
[pid  3696] write(3, "1000", 4 <unfinished ...>
[pid  3695] <... close resumed>)        = 0
[pid  3695] mkdir("./file0", 0777 <unfinished ...>
[pid  3696] <... write resumed>)        = 4
[pid  3695] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3611] openat(AT_FDCWD, "/dev/loop5", O_RDWR <unfinished ...>
[pid  3608] openat(AT_FDCWD, "/dev/loop3", O_RDWR <unfinished ...>
[pid  3696] close(3 <unfinished ...>
[pid  3695] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3611] <... openat resumed>)       = 3
[pid  3608] <... openat resumed>)       = 3
[pid  3695] pipe2( <unfinished ...>
[pid  3608] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3695] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3608] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3695] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3608] close(3 <unfinished ...>
[pid  3696] <... close resumed>)        = 0
[pid  3611] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3608] <... close resumed>)        = 0
[pid  3696] mkdir("./file0", 0777 <unfinished ...>
[pid  3611] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3697 attached
 <unfinished ...>
[pid  3696] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3611] close(3 <unfinished ...>
[pid  3696] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3611] <... close resumed>)        = 0
[pid  3696] pipe2( <unfinished ...>
[pid  3611] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3696] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3696] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3693] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3611] <... clone resumed>, child_tidptr=0x55555737d690) = 3698
[pid  3608] <... clone resumed>, child_tidptr=0x55555737d690) = 3697
[pid  3693] exit_group(0)               = ?
[pid  3693] +++ exited with 0 +++
[pid  3605] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3693, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3605] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3605] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  3605] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 3698 attached
 <unfinished ...>
[pid  3697] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3605] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3698] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3697] <... prctl resumed>)        = 0
[pid  3605] close(3 <unfinished ...>
[pid  3698] <... prctl resumed>)        = 0
[pid  3605] <... close resumed>)        = 0
[pid  3698] setpgid(0, 0 <unfinished ...>
[pid  3605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3698] <... setpgid resumed>)      = 0
[pid  3698] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3605] <... clone resumed>, child_tidptr=0x55555737d690) = 3699
[pid  3698] <... openat resumed>)       = 3
[pid  3698] write(3, "1000", 4)         = 4
[pid  3698] close(3 <unfinished ...>
[pid  3697] setpgid(0, 0 <unfinished ...>
[pid  3698] <... close resumed>)        = 0
[pid  3697] <... setpgid resumed>)      = 0
[pid  3698] mkdir("./file0", 0777 <unfinished ...>
[pid  3697] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3698] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3698] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3697] <... openat resumed>)       = 3
[pid  3698] pipe2( <unfinished ...>
[pid  3697] write(3, "1000", 4./strace-static-x86_64: Process 3699 attached
 <unfinished ...>
[pid  3698] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3697] <... write resumed>)        = 4
[pid  3699] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3698] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3697] close(3 <unfinished ...>
[pid  3699] <... prctl resumed>)        = 0
[pid  3697] <... close resumed>)        = 0
[   45.534112][ T3696] Cache volume key already in use (9p,(null),)
[   45.534271][ T3694] Cache volume key already in use (9p,(null),)
[pid  3699] setpgid(0, 0 <unfinished ...>
[pid  3697] mkdir("./file0", 0777 <unfinished ...>
[pid  3699] <... setpgid resumed>)      = 0
[pid  3697] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3699] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3697] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3699] <... openat resumed>)       = 3
[pid  3697] pipe2( <unfinished ...>
[pid  3699] write(3, "1000", 4 <unfinished ...>
[pid  3697] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3699] <... write resumed>)        = 4
[pid  3697] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3699] close(3)                    = 0
[pid  3699] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3699] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3699] pipe2([3, 4], 0)            = 0
[pid  3699] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3695] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3695] exit_group(0)               = ?
[pid  3695] +++ exited with 0 +++
[pid  3607] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3695, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3607] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3
[pid  3607] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3607] close(3)                    = 0
[pid  3607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3700
./strace-static-x86_64: Process 3700 attached
[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] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3700] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3700] pipe2([3, 4], 0)            = 0
[pid  3700] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3696] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3696] exit_group(0)               = ?
[pid  3696] +++ exited with 0 +++
[pid  3606] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3696, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3
[pid  3606] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3606] close(3)                    = 0
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3701
./strace-static-x86_64: Process 3701 attached
[pid  3694] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3701] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3694] exit_group(0 <unfinished ...>
[pid  3701] <... prctl resumed>)        = 0
[pid  3694] <... exit_group resumed>)   = ?
[pid  3701] setpgid(0, 0 <unfinished ...>
[pid  3694] +++ exited with 0 +++
[pid  3701] <... setpgid resumed>)      = 0
[pid  3701] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3694, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3701] write(3, "1000", 4 <unfinished ...>
[pid  3610] restart_syscall(<... resuming interrupted clone ...> <unfinished ...>
[pid  3701] <... write resumed>)        = 4
[pid  3701] close(3)                    = 0
[pid  3610] <... restart_syscall resumed>) = 0
[pid  3701] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3701] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR <unfinished ...>
[pid  3701] pipe2( <unfinished ...>
[pid  3610] <... openat resumed>)       = 3
[pid  3701] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3610] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3701] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3610] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3610] close(3)                    = 0
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3702
./strace-static-x86_64: Process 3702 attached
[pid  3702] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3702] setpgid(0, 0)               = 0
[pid  3702] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3702] write(3, "1000", 4)         = 4
[pid  3702] close(3)                    = 0
[pid  3702] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3702] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3702] pipe2([3, 4], 0)            = 0
[   45.682434][ T3699] Cache volume key already in use (9p,(null),)
[   45.683288][ T3700] Cache volume key already in use (9p,(null),)
[   45.695257][ T3697] Cache volume key already in use (9p,(null),)
[pid  3702] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3698] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3698] exit_group(0)               = ?
[pid  3698] +++ exited with 0 +++
[pid  3611] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3698, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3611] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3611] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3
[pid  3611] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3611] close(3)                    = 0
[pid  3611] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3703
./strace-static-x86_64: Process 3703 attached
[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] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3703] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3703] pipe2([3, 4], 0)            = 0
[pid  3703] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3699] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3699] exit_group(0)               = ?
[pid  3699] +++ exited with 0 +++
[pid  3605] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3699, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3697] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3605] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  3605] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3605] close(3)                    = 0
[pid  3605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3704
./strace-static-x86_64: Process 3704 attached
[pid  3704] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3704] setpgid(0, 0)               = 0
[pid  3704] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3697] exit_group(0 <unfinished ...>
[pid  3704] <... openat resumed>)       = 3
[pid  3697] <... exit_group resumed>)   = ?
[pid  3704] write(3, "1000", 4)         = 4
[pid  3704] close(3)                    = 0
[pid  3704] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3704] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3704] pipe2([3, 4], 0)            = 0
[pid  3704] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3697] +++ exited with 0 +++
[pid  3608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3697, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3608] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3608] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3
[pid  3608] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3608] close(3)                    = 0
[pid  3608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3705
./strace-static-x86_64: Process 3705 attached
[pid  3705] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3705] setpgid(0, 0)               = 0
[   45.811077][ T3702] Cache volume key already in use (9p,(null),)
[pid  3705] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3705] write(3, "1000", 4)         = 4
[pid  3705] close(3)                    = 0
[pid  3705] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3705] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3705] pipe2([3, 4], 0)            = 0
[pid  3705] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3700] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3700] exit_group(0)               = ?
[pid  3700] +++ exited with 0 +++
[pid  3607] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3700, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3607] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3607] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3
[pid  3607] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3607] close(3)                    = 0
[pid  3607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3706
./strace-static-x86_64: Process 3706 attached
[pid  3701] <... mount resumed>)        = -1 EFAULT (Bad address)
[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 <unfinished ...>
[pid  3701] exit_group(0 <unfinished ...>
[pid  3706] <... openat resumed>)       = 3
[pid  3706] write(3, "1000", 4 <unfinished ...>
[pid  3701] <... exit_group resumed>)   = ?
[pid  3706] <... write resumed>)        = 4
[pid  3706] close(3)                    = 0
[pid  3706] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3706] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3701] +++ exited with 0 +++
[pid  3606] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3701, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3706] pipe2([3, 4], 0)            = 0
[pid  3706] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3
[pid  3606] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3606] close(3)                    = 0
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3707
./strace-static-x86_64: Process 3707 attached
[pid  3707] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3707] setpgid(0, 0)               = 0
[pid  3707] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3707] write(3, "1000", 4)         = 4
[pid  3707] close(3)                    = 0
[pid  3707] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3707] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3707] pipe2([3, 4], 0)            = 0
[pid  3707] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3702] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3702] exit_group(0)               = ?
[pid  3702] +++ exited with 0 +++
[pid  3610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3702, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3
[pid  3610] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3610] close(3)                    = 0
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3708
./strace-static-x86_64: Process 3708 attached
[pid  3708] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3708] setpgid(0, 0)               = 0
[pid  3708] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3708] write(3, "1000", 4)         = 4
[pid  3708] close(3)                    = 0
[   45.992332][ T3707] Cache volume key already in use (9p,(null),)
[   46.000684][ T3705] Cache volume key already in use (9p,(null),)
[   46.007312][ T3704] Cache volume key already in use (9p,(null),)
[pid  3708] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3708] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3703] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3708] pipe2([3, 4], 0)            = 0
[pid  3708] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3703] exit_group(0)               = ?
[pid  3703] +++ exited with 0 +++
[pid  3611] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3703, si_uid=0, si_status=0, si_utime=0, si_stime=4} ---
[pid  3611] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3
[pid  3611] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3611] close(3)                    = 0
[pid  3611] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3709
[pid  3707] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3707] exit_group(0)               = ?
[pid  3707] +++ exited with 0 +++
[pid  3606] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3707, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3
[pid  3606] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3606] close(3./strace-static-x86_64: Process 3709 attached
)                    = 0
[pid  3709] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3709] <... prctl resumed>)        = 0
[pid  3709] setpgid(0, 0)               = 0
[pid  3606] <... clone resumed>, child_tidptr=0x55555737d690) = 3710
[pid  3709] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 3710 attached
) = 3
[pid  3710] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3709] write(3, "1000", 4 <unfinished ...>
[pid  3710] <... prctl resumed>)        = 0
[pid  3710] setpgid(0, 0 <unfinished ...>
[pid  3709] <... write resumed>)        = 4
[pid  3710] <... setpgid resumed>)      = 0
[pid  3710] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3709] close(3 <unfinished ...>
[pid  3710] <... openat resumed>)       = 3
[pid  3709] <... close resumed>)        = 0
[pid  3710] write(3, "1000", 4 <unfinished ...>
[pid  3709] mkdir("./file0", 0777 <unfinished ...>
[pid  3710] <... write resumed>)        = 4
[pid  3709] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3710] close(3 <unfinished ...>
[pid  3709] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3710] <... close resumed>)        = 0
[pid  3709] pipe2( <unfinished ...>
[pid  3710] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3709] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3710] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3709] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3705] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3710] pipe2( <unfinished ...>
[pid  3705] exit_group(0)               = ?
[pid  3705] +++ exited with 0 +++
[pid  3608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3705, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3710] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3608] restart_syscall(<... resuming interrupted clone ...> <unfinished ...>
[pid  3710] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3608] <... restart_syscall resumed>) = 0
[pid  3608] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3
[pid  3608] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3608] close(3)                    = 0
[pid  3704] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3704] exit_group(0)               = ?
[pid  3608] <... clone resumed>, child_tidptr=0x55555737d690) = 3711
./strace-static-x86_64: Process 3711 attached
[pid  3704] +++ exited with 0 +++
[pid  3711] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3711] setpgid(0, 0 <unfinished ...>
[pid  3605] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3704, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3711] <... setpgid resumed>)      = 0
[pid  3605] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  3711] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3605] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3605] close(3 <unfinished ...>
[pid  3711] <... openat resumed>)       = 3
[pid  3605] <... close resumed>)        = 0
[pid  3711] write(3, "1000", 4 <unfinished ...>
[pid  3605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3711] <... write resumed>)        = 4
[pid  3711] close(3)                    = 0
[pid  3605] <... clone resumed>, child_tidptr=0x55555737d690) = 3712
[pid  3711] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3711] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3711] pipe2([3, 4], 0)            = 0
[pid  3711] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"..../strace-static-x86_64: Process 3712 attached
 <unfinished ...>
[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] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3712] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3712] pipe2([3, 4], 0)            = 0
[pid  3712] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3706] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3706] exit_group(0)               = ?
[pid  3706] +++ exited with 0 +++
[pid  3607] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3706, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
[pid  3607] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3
[pid  3607] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3607] close(3)                    = 0
[pid  3607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3713
./strace-static-x86_64: Process 3713 attached
[   46.159040][ T3708] Cache volume key already in use (9p,(null),)
[   46.188962][ T3710] Cache volume key already in use (9p,(null),)
[   46.191233][ T3711] Cache volume key already in use (9p,(null),)
[   46.195291][ T3709] Cache volume key already in use (9p,(null),)
[pid  3713] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3713] setpgid(0, 0)               = 0
[pid  3713] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3713] write(3, "1000", 4)         = 4
[pid  3713] close(3)                    = 0
[pid  3713] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3713] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3713] pipe2([3, 4], 0)            = 0
[pid  3713] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3708] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3708] exit_group(0)               = ?
[pid  3708] +++ exited with 0 +++
[pid  3610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3708, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3
[pid  3610] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3610] close(3)                    = 0
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3714
./strace-static-x86_64: Process 3714 attached
[pid  3714] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3714] setpgid(0, 0)               = 0
[pid  3714] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3714] write(3, "1000", 4)         = 4
[pid  3714] close(3)                    = 0
[pid  3714] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3714] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3714] pipe2([3, 4], 0)            = 0
[pid  3714] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3711] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3711] exit_group(0)               = ?
[pid  3711] +++ exited with 0 +++
[pid  3608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3711, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3608] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3
[pid  3608] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3608] close(3)                    = 0
[pid  3608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3715
./strace-static-x86_64: Process 3715 attached
[pid  3709] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3709] exit_group(0)               = ?
[pid  3715] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3709] +++ exited with 0 +++
[pid  3715] <... prctl resumed>)        = 0
[pid  3611] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3709, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3715] setpgid(0, 0)               = 0
[pid  3715] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3611] openat(AT_FDCWD, "/dev/loop5", O_RDWR <unfinished ...>
[pid  3715] <... openat resumed>)       = 3
[pid  3611] <... openat resumed>)       = 3
[pid  3715] write(3, "1000", 4 <unfinished ...>
[pid  3611] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3715] <... write resumed>)        = 4
[pid  3611] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3715] close(3 <unfinished ...>
[pid  3611] close(3 <unfinished ...>
[pid  3715] <... close resumed>)        = 0
[pid  3611] <... close resumed>)        = 0
[pid  3715] mkdir("./file0", 0777 <unfinished ...>
[pid  3611] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3715] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3715] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3611] <... clone resumed>, child_tidptr=0x55555737d690) = 3716
[pid  3715] pipe2([3, 4], 0)            = 0
[pid  3715] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"..../strace-static-x86_64: Process 3716 attached
 <unfinished ...>
[pid  3716] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3716] setpgid(0, 0)               = 0
[pid  3716] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3716] write(3, "1000", 4)         = 4
[pid  3716] close(3)                    = 0
[pid  3716] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3716] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3716] pipe2([3, 4], 0)            = 0
[pid  3716] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3710] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3710] exit_group(0)               = ?
[pid  3710] +++ exited with 0 +++
[pid  3606] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3710, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3
[pid  3606] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3606] close(3)                    = 0
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3717
./strace-static-x86_64: Process 3717 attached
[pid  3717] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3712] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3712] exit_group(0)               = ?
[pid  3717] <... prctl resumed>)        = 0
[pid  3717] setpgid(0, 0)               = 0
[pid  3717] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3717] write(3, "1000", 4)         = 4
[pid  3717] close(3)                    = 0
[pid  3717] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3717] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3717] pipe2([3, 4], 0)            = 0
[   46.390949][ T3713] Cache volume key already in use (9p,(null),)
[   46.418071][ T3715] Cache volume key already in use (9p,(null),)
[pid  3717] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3712] +++ exited with 0 +++
[pid  3605] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3712, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3605] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  3605] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3713] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3713] exit_group(0)               = ?
[pid  3713] +++ exited with 0 +++
[pid  3605] close(3 <unfinished ...>
[pid  3607] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3713, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3605] <... close resumed>)        = 0
[pid  3605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3718
./strace-static-x86_64: Process 3718 attached
[pid  3607] openat(AT_FDCWD, "/dev/loop2", O_RDWR <unfinished ...>
[pid  3718] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3607] <... openat resumed>)       = 3
[pid  3607] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3607] close(3)                    = 0
[pid  3607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3718] <... prctl resumed>)        = 0
[pid  3607] <... clone resumed>, child_tidptr=0x55555737d690) = 3719
./strace-static-x86_64: Process 3719 attached
[pid  3719] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3719] setpgid(0, 0)               = 0
[pid  3719] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3718] setpgid(0, 0 <unfinished ...>
[pid  3719] write(3, "1000", 4)         = 4
[pid  3719] close(3)                    = 0
[pid  3719] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3719] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3719] pipe2([3, 4], 0)            = 0
[pid  3719] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3718] <... setpgid resumed>)      = 0
[   46.442842][ T3716] Cache volume key already in use (9p,(null),)
[   46.466178][ T3717] Cache volume key already in use (9p,(null),)
[pid  3718] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3714] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3718] write(3, "1000", 4 <unfinished ...>
[pid  3714] exit_group(0 <unfinished ...>
[pid  3718] <... write resumed>)        = 4
[pid  3714] <... exit_group resumed>)   = ?
[pid  3718] close(3 <unfinished ...>
[pid  3714] +++ exited with 0 +++
[pid  3718] <... close resumed>)        = 0
[pid  3718] mkdir("./file0", 0777 <unfinished ...>
[pid  3610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3714, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3718] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3718] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3
[pid  3610] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3610] close(3 <unfinished ...>
[pid  3718] pipe2( <unfinished ...>
[pid  3610] <... close resumed>)        = 0
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3720
./strace-static-x86_64: Process 3720 attached
[pid  3720] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3718] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3720] <... prctl resumed>)        = 0
[pid  3718] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3716] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3720] setpgid(0, 0 <unfinished ...>
[pid  3716] exit_group(0 <unfinished ...>
[pid  3720] <... setpgid resumed>)      = 0
[pid  3716] <... exit_group resumed>)   = ?
[pid  3720] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3716] +++ exited with 0 +++
[pid  3720] write(3, "1000", 4 <unfinished ...>
[pid  3611] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3716, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3720] <... write resumed>)        = 4
[pid  3720] close(3)                    = 0
[pid  3611] openat(AT_FDCWD, "/dev/loop5", O_RDWR <unfinished ...>
[pid  3720] mkdir("./file0", 0777 <unfinished ...>
[pid  3611] <... openat resumed>)       = 3
[pid  3720] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3611] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3720] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3611] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3720] pipe2( <unfinished ...>
[pid  3611] close(3 <unfinished ...>
[pid  3720] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3611] <... close resumed>)        = 0
[pid  3720] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3611] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3721
./strace-static-x86_64: Process 3721 attached
[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] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3721] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3721] pipe2([3, 4], 0)            = 0
[pid  3721] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3715] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3715] exit_group(0)               = ?
[pid  3715] +++ exited with 0 +++
[pid  3608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3715, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3608] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3
[pid  3608] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3608] close(3)                    = 0
[pid  3608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3722
./strace-static-x86_64: Process 3722 attached
[pid  3722] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3722] setpgid(0, 0)               = 0
[pid  3722] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3722] write(3, "1000", 4)         = 4
[pid  3722] close(3)                    = 0
[pid  3722] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3722] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3722] pipe2([3, 4], 0)            = 0
[pid  3722] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3717] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3717] exit_group(0)               = ?
[pid  3717] +++ exited with 0 +++
[pid  3606] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3717, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3
[pid  3606] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3606] close(3)                    = 0
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3723
./strace-static-x86_64: Process 3723 attached
[pid  3723] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3723] setpgid(0, 0)               = 0
[pid  3723] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3723] write(3, "1000", 4)         = 4
[pid  3723] close(3)                    = 0
[   46.639172][ T3722] Cache volume key already in use (9p,(null),)
[   46.642565][ T3721] Cache volume key already in use (9p,(null),)
[   46.652727][ T3720] Cache volume key already in use (9p,(null),)
[   46.659675][ T3718] Cache volume key already in use (9p,(null),)
[pid  3723] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3723] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3723] pipe2([3, 4], 0)            = 0
[pid  3723] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3722] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3722] exit_group(0)               = ?
[pid  3722] +++ exited with 0 +++
[pid  3608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3722, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3719] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3608] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3
[pid  3608] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3608] close(3 <unfinished ...>
[pid  3719] exit_group(0 <unfinished ...>
[pid  3608] <... close resumed>)        = 0
[pid  3719] <... exit_group resumed>)   = ?
[pid  3608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3724 attached
 <unfinished ...>
[pid  3719] +++ exited with 0 +++
[pid  3720] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3724] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3720] exit_group(0 <unfinished ...>
[pid  3724] <... prctl resumed>)        = 0
[pid  3720] <... exit_group resumed>)   = ?
[pid  3724] setpgid(0, 0 <unfinished ...>
[pid  3720] +++ exited with 0 +++
[pid  3724] <... setpgid resumed>)      = 0
[pid  3610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3720, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3724] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3610] restart_syscall(<... resuming interrupted clone ...> <unfinished ...>
[pid  3724] <... openat resumed>)       = 3
[pid  3610] <... restart_syscall resumed>) = 0
[pid  3724] write(3, "1000", 4)         = 4
[pid  3724] close(3 <unfinished ...>
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR <unfinished ...>
[pid  3724] <... close resumed>)        = 0
[pid  3610] <... openat resumed>)       = 3
[pid  3724] mkdir("./file0", 0777 <unfinished ...>
[pid  3610] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3724] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3610] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3724] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3610] close(3 <unfinished ...>
[pid  3724] pipe2( <unfinished ...>
[pid  3610] <... close resumed>)        = 0
[pid  3724] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3724] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3610] <... clone resumed>, child_tidptr=0x55555737d690) = 3725
[pid  3608] <... clone resumed>, child_tidptr=0x55555737d690) = 3724
[pid  3607] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3719, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3607] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3
[pid  3607] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3607] close(3)                    = 0
[pid  3607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3726
./strace-static-x86_64: Process 3725 attached
./strace-static-x86_64: Process 3726 attached
[pid  3725] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3718] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3725] <... prctl resumed>)        = 0
[pid  3725] setpgid(0, 0 <unfinished ...>
[pid  3718] exit_group(0 <unfinished ...>
[pid  3725] <... setpgid resumed>)      = 0
[pid  3718] <... exit_group resumed>)   = ?
[pid  3725] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3718] +++ exited with 0 +++
[pid  3725] <... openat resumed>)       = 3
[pid  3605] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3718, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3726] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3725] write(3, "1000", 4)         = 4
[pid  3726] <... prctl resumed>)        = 0
[pid  3725] close(3)                    = 0
[pid  3726] setpgid(0, 0 <unfinished ...>
[pid  3725] mkdir("./file0", 0777 <unfinished ...>
[pid  3605] openat(AT_FDCWD, "/dev/loop0", O_RDWR <unfinished ...>
[pid  3726] <... setpgid resumed>)      = 0
[pid  3725] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3726] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3725] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3605] <... openat resumed>)       = 3
[pid  3726] <... openat resumed>)       = 3
[pid  3725] pipe2( <unfinished ...>
[pid  3605] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3726] write(3, "1000", 4 <unfinished ...>
[pid  3725] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3726] <... write resumed>)        = 4
[pid  3725] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3605] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3726] close(3)                    = 0
[pid  3605] close(3 <unfinished ...>
[pid  3726] mkdir("./file0", 0777 <unfinished ...>
[pid  3605] <... close resumed>)        = 0
[pid  3726] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3726] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3605] <... clone resumed>, child_tidptr=0x55555737d690) = 3727
[pid  3726] pipe2([3, 4], 0)            = 0
[pid  3726] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"..../strace-static-x86_64: Process 3727 attached
 <unfinished ...>
[pid  3727] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3727] setpgid(0, 0 <unfinished ...>
[pid  3721] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3727] <... setpgid resumed>)      = 0
[pid  3721] exit_group(0 <unfinished ...>
[pid  3727] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3721] <... exit_group resumed>)   = ?
[pid  3727] write(3, "1000", 4)         = 4
[pid  3721] +++ exited with 0 +++
[pid  3727] close(3)                    = 0
[pid  3611] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3721, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3727] mkdir("./file0", 0777 <unfinished ...>
[pid  3611] restart_syscall(<... resuming interrupted clone ...> <unfinished ...>
[pid  3727] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3611] <... restart_syscall resumed>) = 0
[pid  3727] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3727] pipe2([3, 4], 0)            = 0
[pid  3611] openat(AT_FDCWD, "/dev/loop5", O_RDWR <unfinished ...>
[pid  3727] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3611] <... openat resumed>)       = 3
[pid  3611] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3611] close(3)                    = 0
[pid  3611] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3728
./strace-static-x86_64: Process 3728 attached
[pid  3728] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3728] setpgid(0, 0)               = 0
[pid  3728] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3728] write(3, "1000", 4)         = 4
[   46.812950][ T3725] Cache volume key already in use (9p,(null),)
[   46.813733][ T3726] Cache volume key already in use (9p,(null),)
[   46.820486][ T3724] Cache volume key already in use (9p,(null),)
[pid  3728] close(3)                    = 0
[pid  3723] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3728] mkdir("./file0", 0777 <unfinished ...>
[pid  3723] exit_group(0 <unfinished ...>
[pid  3728] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3723] <... exit_group resumed>)   = ?
[pid  3728] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3728] pipe2( <unfinished ...>
[pid  3723] +++ exited with 0 +++
[pid  3728] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3728] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3606] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3723, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3606] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3
[pid  3606] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3606] close(3)                    = 0
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3729
./strace-static-x86_64: Process 3729 attached
[pid  3729] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3729] setpgid(0, 0 <unfinished ...>
[pid  3725] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3729] <... setpgid resumed>)      = 0
[pid  3729] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3729] write(3, "1000", 4)         = 4
[pid  3725] exit_group(0 <unfinished ...>
[pid  3729] close(3 <unfinished ...>
[pid  3725] <... exit_group resumed>)   = ?
[pid  3729] <... close resumed>)        = 0
[pid  3725] +++ exited with 0 +++
[pid  3729] mkdir("./file0", 0777 <unfinished ...>
[pid  3610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3725, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3729] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3729] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3729] pipe2([3, 4], 0)            = 0
[pid  3729] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3
[pid  3610] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3610] close(3 <unfinished ...>
[pid  3726] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3610] <... close resumed>)        = 0
[pid  3726] exit_group(0 <unfinished ...>
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3726] <... exit_group resumed>)   = ?
./strace-static-x86_64: Process 3730 attached
[pid  3726] +++ exited with 0 +++
[pid  3607] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3726, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3607] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3730] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3610] <... clone resumed>, child_tidptr=0x55555737d690) = 3730
[pid  3730] <... prctl resumed>)        = 0
[pid  3607] openat(AT_FDCWD, "/dev/loop2", O_RDWR <unfinished ...>
[pid  3730] setpgid(0, 0)               = 0
[pid  3607] <... openat resumed>)       = 3
[pid  3730] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3724] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3607] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3724] exit_group(0 <unfinished ...>
[pid  3607] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3724] <... exit_group resumed>)   = ?
[pid  3607] close(3 <unfinished ...>
[pid  3730] <... openat resumed>)       = 3
[pid  3724] +++ exited with 0 +++
[pid  3607] <... close resumed>)        = 0
[pid  3730] write(3, "1000", 4 <unfinished ...>
[pid  3607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3730] <... write resumed>)        = 4
[pid  3608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3724, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3730] close(3 <unfinished ...>
[pid  3608] restart_syscall(<... resuming interrupted clone ...> <unfinished ...>
[pid  3607] <... clone resumed>, child_tidptr=0x55555737d690) = 3731
[pid  3608] <... restart_syscall resumed>) = 0
[pid  3730] <... close resumed>)        = 0
[pid  3730] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3608] openat(AT_FDCWD, "/dev/loop3", O_RDWR <unfinished ...>
[pid  3730] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3608] <... openat resumed>)       = 3
./strace-static-x86_64: Process 3731 attached
[pid  3730] pipe2( <unfinished ...>
[pid  3608] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3731] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3730] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3608] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3731] <... prctl resumed>)        = 0
[pid  3730] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3608] close(3 <unfinished ...>
[pid  3731] setpgid(0, 0 <unfinished ...>
[pid  3608] <... close resumed>)        = 0
[pid  3731] <... setpgid resumed>)      = 0
[pid  3608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3731] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3608] <... clone resumed>, child_tidptr=0x55555737d690) = 3732
[pid  3731] write(3, "1000", 4)         = 4
[pid  3731] close(3)                    = 0
[pid  3731] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3731] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3731] pipe2([3, 4], 0)            = 0
[pid  3731] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"..../strace-static-x86_64: Process 3732 attached
 <unfinished ...>
[pid  3732] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[   46.968676][ T3728] Cache volume key already in use (9p,(null),)
[   46.976643][ T3729] Cache volume key already in use (9p,(null),)
[pid  3732] setpgid(0, 0)               = 0
[pid  3732] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3732] write(3, "1000", 4)         = 4
[pid  3732] close(3)                    = 0
[pid  3732] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3732] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3732] pipe2([3, 4], 0)            = 0
[pid  3732] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3727] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3727] exit_group(0)               = ?
[pid  3727] +++ exited with 0 +++
[pid  3605] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3727, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3605] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  3605] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3605] close(3)                    = 0
[pid  3605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3733
[pid  3728] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3728] exit_group(0)               = ?
[pid  3728] +++ exited with 0 +++
./strace-static-x86_64: Process 3733 attached
[pid  3611] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3728, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3611] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3
[pid  3611] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3733] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3611] close(3 <unfinished ...>
[pid  3733] <... prctl resumed>)        = 0
[pid  3729] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3733] setpgid(0, 0)               = 0
[pid  3729] exit_group(0 <unfinished ...>
[pid  3733] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3611] <... close resumed>)        = 0
[pid  3733] <... openat resumed>)       = 3
[pid  3729] <... exit_group resumed>)   = ?
[pid  3733] write(3, "1000", 4)         = 4
[pid  3729] +++ exited with 0 +++
[pid  3733] close(3)                    = 0
[pid  3733] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3733] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3733] pipe2([3, 4], 0)            = 0
[pid  3733] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3611] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3734
./strace-static-x86_64: Process 3734 attached
[pid  3734] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3734] setpgid(0, 0)               = 0
[pid  3734] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3734] write(3, "1000", 4)         = 4
[pid  3734] close(3)                    = 0
[pid  3734] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3734] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3734] pipe2([3, 4], 0)            = 0
[pid  3734] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3606] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3729, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3
[pid  3606] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3606] close(3)                    = 0
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3735
./strace-static-x86_64: Process 3735 attached
[pid  3735] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3735] setpgid(0, 0)               = 0
[pid  3735] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3735] write(3, "1000", 4)         = 4
[pid  3735] close(3)                    = 0
[pid  3735] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3735] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3735] pipe2([3, 4], 0)            = 0
[   47.101617][ T3732] Cache volume key already in use (9p,(null),)
[   47.110695][ T3731] Cache volume key already in use (9p,(null),)
[pid  3735] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3730] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3730] exit_group(0)               = ?
[pid  3730] +++ exited with 0 +++
[pid  3610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3730, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3610] restart_syscall(<... resuming interrupted clone ...> <unfinished ...>
[pid  3732] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3610] <... restart_syscall resumed>) = 0
[pid  3732] exit_group(0)               = ?
[pid  3732] +++ exited with 0 +++
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3
[pid  3608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3732, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3610] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3610] close(3 <unfinished ...>
[pid  3608] openat(AT_FDCWD, "/dev/loop3", O_RDWR <unfinished ...>
[pid  3610] <... close resumed>)        = 0
[pid  3608] <... openat resumed>)       = 3
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3608] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3610] <... clone resumed>, child_tidptr=0x55555737d690) = 3736
[pid  3608] close(3)                    = 0
[   47.175595][ T3733] Cache volume key already in use (9p,(null),)
[pid  3608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3736 attached
 <unfinished ...>
[pid  3731] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3608] <... clone resumed>, child_tidptr=0x55555737d690) = 3737
[pid  3736] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3731] exit_group(0 <unfinished ...>
[pid  3736] <... prctl resumed>)        = 0
[pid  3731] <... exit_group resumed>)   = ?
./strace-static-x86_64: Process 3737 attached
[pid  3737] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3736] setpgid(0, 0 <unfinished ...>
[pid  3731] +++ exited with 0 +++
[pid  3737] <... prctl resumed>)        = 0
[pid  3736] <... setpgid resumed>)      = 0
[pid  3607] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3731, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3737] setpgid(0, 0 <unfinished ...>
[pid  3736] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3737] <... setpgid resumed>)      = 0
[pid  3736] <... openat resumed>)       = 3
[pid  3737] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3736] write(3, "1000", 4 <unfinished ...>
[pid  3607] openat(AT_FDCWD, "/dev/loop2", O_RDWR <unfinished ...>
[pid  3737] <... openat resumed>)       = 3
[pid  3736] <... write resumed>)        = 4
[pid  3607] <... openat resumed>)       = 3
[pid  3737] write(3, "1000", 4 <unfinished ...>
[pid  3607] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3737] <... write resumed>)        = 4
[pid  3607] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3737] close(3 <unfinished ...>
[pid  3607] close(3 <unfinished ...>
[pid  3737] <... close resumed>)        = 0
[pid  3607] <... close resumed>)        = 0
[pid  3737] mkdir("./file0", 0777 <unfinished ...>
[pid  3607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3737] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3737] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3607] <... clone resumed>, child_tidptr=0x55555737d690) = 3738
[pid  3737] pipe2([3, 4], 0)            = 0
[pid  3737] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"..../strace-static-x86_64: Process 3738 attached
 <unfinished ...>
[pid  3738] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3736] close(3)                    = 0
[pid  3736] mkdir("./file0", 0777 <unfinished ...>
[pid  3738] <... prctl resumed>)        = 0
[pid  3738] setpgid(0, 0)               = 0
[pid  3736] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3738] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3736] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3738] <... openat resumed>)       = 3
[pid  3736] pipe2( <unfinished ...>
[pid  3738] write(3, "1000", 4 <unfinished ...>
[pid  3736] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3733] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3738] <... write resumed>)        = 4
[pid  3738] close(3 <unfinished ...>
[pid  3736] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3738] <... close resumed>)        = 0
[pid  3733] exit_group(0 <unfinished ...>
[pid  3738] mkdir("./file0", 0777 <unfinished ...>
[pid  3733] <... exit_group resumed>)   = ?
[   47.230697][ T3735] Cache volume key already in use (9p,(null),)
[pid  3738] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3733] +++ exited with 0 +++
[pid  3738] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3605] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3733, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3738] pipe2([3, 4], 0)            = 0
[pid  3738] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3605] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  3605] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3605] close(3)                    = 0
[pid  3605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3734] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3605] <... clone resumed>, child_tidptr=0x55555737d690) = 3739
[pid  3734] exit_group(0)               = ?
./strace-static-x86_64: Process 3739 attached
[pid  3739] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3734] +++ exited with 0 +++
[pid  3735] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3611] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3734, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3739] <... prctl resumed>)        = 0
[pid  3739] setpgid(0, 0 <unfinished ...>
[pid  3611] openat(AT_FDCWD, "/dev/loop5", O_RDWR <unfinished ...>
[pid  3739] <... setpgid resumed>)      = 0
[pid  3735] exit_group(0)               = ?
[pid  3739] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3735] +++ exited with 0 +++
[pid  3611] <... openat resumed>)       = 3
[pid  3739] <... openat resumed>)       = 3
[pid  3611] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3739] write(3, "1000", 4 <unfinished ...>
[pid  3606] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3735, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3611] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3739] <... write resumed>)        = 4
[pid  3611] close(3 <unfinished ...>
[pid  3606] restart_syscall(<... resuming interrupted clone ...> <unfinished ...>
[pid  3739] close(3 <unfinished ...>
[pid  3611] <... close resumed>)        = 0
[pid  3606] <... restart_syscall resumed>) = 0
[pid  3739] <... close resumed>)        = 0
[pid  3611] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3739] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3611] <... clone resumed>, child_tidptr=0x55555737d690) = 3740
[pid  3739] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR <unfinished ...>
[pid  3739] pipe2( <unfinished ...>
[pid  3606] <... openat resumed>)       = 3
[pid  3739] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3606] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3739] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3606] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3606] close(3)                    = 0
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3741
./strace-static-x86_64: Process 3740 attached
[pid  3740] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
./strace-static-x86_64: Process 3741 attached
[pid  3740] setpgid(0, 0 <unfinished ...>
[pid  3741] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3740] <... setpgid resumed>)      = 0
[   47.320983][ T3736] Cache volume key already in use (9p,(null),)
[   47.321929][ T3738] Cache volume key already in use (9p,(null),)
[pid  3741] <... prctl resumed>)        = 0
[pid  3741] setpgid(0, 0 <unfinished ...>
[pid  3740] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3737] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3741] <... setpgid resumed>)      = 0
[pid  3737] exit_group(0 <unfinished ...>
[pid  3741] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3737] <... exit_group resumed>)   = ?
[pid  3741] <... openat resumed>)       = 3
[pid  3737] +++ exited with 0 +++
[pid  3741] write(3, "1000", 4 <unfinished ...>
[pid  3740] <... openat resumed>)       = 3
[pid  3741] <... write resumed>)        = 4
[pid  3608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3737, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3740] write(3, "1000", 4 <unfinished ...>
[pid  3741] close(3 <unfinished ...>
[pid  3740] <... write resumed>)        = 4
[pid  3608] openat(AT_FDCWD, "/dev/loop3", O_RDWR <unfinished ...>
[pid  3741] <... close resumed>)        = 0
[pid  3740] close(3 <unfinished ...>
[pid  3608] <... openat resumed>)       = 3
[pid  3741] mkdir("./file0", 0777 <unfinished ...>
[pid  3740] <... close resumed>)        = 0
[pid  3608] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3741] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3740] mkdir("./file0", 0777 <unfinished ...>
[pid  3608] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3741] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3740] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3608] close(3 <unfinished ...>
[pid  3741] pipe2( <unfinished ...>
[pid  3740] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3608] <... close resumed>)        = 0
[pid  3741] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3740] pipe2( <unfinished ...>
[pid  3608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3741] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3740] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3608] <... clone resumed>, child_tidptr=0x55555737d690) = 3742
[pid  3740] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"..../strace-static-x86_64: Process 3742 attached
 <unfinished ...>
[pid  3742] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3736] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3742] setpgid(0, 0)               = 0
[pid  3736] exit_group(0 <unfinished ...>
[pid  3742] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3736] <... exit_group resumed>)   = ?
[pid  3742] <... openat resumed>)       = 3
[pid  3742] write(3, "1000", 4)         = 4
[pid  3742] close(3)                    = 0
[pid  3742] mkdir("./file0", 0777 <unfinished ...>
[pid  3736] +++ exited with 0 +++
[pid  3742] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3736, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3742] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3742] pipe2([3, 4], 0)            = 0
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR <unfinished ...>
[pid  3742] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3610] <... openat resumed>)       = 3
[pid  3738] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3738] exit_group(0 <unfinished ...>
[pid  3610] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3738] <... exit_group resumed>)   = ?
[pid  3610] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3610] close(3)                    = 0
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3738] +++ exited with 0 +++
[pid  3610] <... clone resumed>, child_tidptr=0x55555737d690) = 3743
[pid  3607] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3738, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
./strace-static-x86_64: Process 3743 attached
[pid  3607] openat(AT_FDCWD, "/dev/loop2", O_RDWR <unfinished ...>
[pid  3743] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3607] <... openat resumed>)       = 3
[pid  3607] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3743] <... prctl resumed>)        = 0
[pid  3607] close(3)                    = 0
[pid  3607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3743] setpgid(0, 0 <unfinished ...>
[pid  3607] <... clone resumed>, child_tidptr=0x55555737d690) = 3744
[   47.456186][ T3739] Cache volume key already in use (9p,(null),)
[   47.456713][ T3740] Cache volume key already in use (9p,(null),)
[   47.470809][ T3741] Cache volume key already in use (9p,(null),)
[pid  3743] <... setpgid resumed>)      = 0
[pid  3742] <... mount resumed>)        = -1 EFAULT (Bad address)
./strace-static-x86_64: Process 3744 attached
[pid  3744] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3743] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3742] exit_group(0 <unfinished ...>
[pid  3744] <... prctl resumed>)        = 0
[pid  3743] <... openat resumed>)       = 3
[pid  3742] <... exit_group resumed>)   = ?
[pid  3744] setpgid(0, 0)               = 0
[pid  3744] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3744] write(3, "1000", 4)         = 4
[pid  3744] close(3 <unfinished ...>
[pid  3743] write(3, "1000", 4 <unfinished ...>
[pid  3742] +++ exited with 0 +++
[pid  3743] <... write resumed>)        = 4
[pid  3743] close(3)                    = 0
[pid  3743] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3743] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3743] pipe2([3, 4], 0)            = 0
[pid  3608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3742, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3744] <... close resumed>)        = 0
[pid  3743] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3608] restart_syscall(<... resuming interrupted clone ...> <unfinished ...>
[pid  3744] mkdir("./file0", 0777 <unfinished ...>
[pid  3608] <... restart_syscall resumed>) = 0
[pid  3744] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3744] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3744] pipe2( <unfinished ...>
[pid  3740] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3608] openat(AT_FDCWD, "/dev/loop3", O_RDWR <unfinished ...>
[pid  3744] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3740] exit_group(0 <unfinished ...>
[pid  3744] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3740] <... exit_group resumed>)   = ?
[pid  3608] <... openat resumed>)       = 3
[pid  3740] +++ exited with 0 +++
[pid  3608] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3611] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3740, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3608] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3608] close(3)                    = 0
[pid  3611] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3
[pid  3611] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3611] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3611] close(3)                    = 0
[pid  3608] <... clone resumed>, child_tidptr=0x55555737d690) = 3745
[pid  3611] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3745 attached
 <unfinished ...>
[pid  3741] <... mount resumed>)        = -1 EFAULT (Bad address)
./strace-static-x86_64: Process 3746 attached
[pid  3745] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3741] exit_group(0 <unfinished ...>
[pid  3611] <... clone resumed>, child_tidptr=0x55555737d690) = 3746
[pid  3745] <... prctl resumed>)        = 0
[pid  3741] <... exit_group resumed>)   = ?
[pid  3745] setpgid(0, 0 <unfinished ...>
[pid  3746] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3741] +++ exited with 0 +++
[pid  3745] <... setpgid resumed>)      = 0
[pid  3606] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3741, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3746] setpgid(0, 0 <unfinished ...>
[pid  3745] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3746] <... setpgid resumed>)      = 0
[pid  3745] <... openat resumed>)       = 3
[pid  3746] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3745] write(3, "1000", 4 <unfinished ...>
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR <unfinished ...>
[pid  3746] <... openat resumed>)       = 3
[pid  3745] <... write resumed>)        = 4
[pid  3606] <... openat resumed>)       = 3
[pid  3746] write(3, "1000", 4 <unfinished ...>
[pid  3745] close(3 <unfinished ...>
[pid  3606] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3746] <... write resumed>)        = 4
[pid  3745] <... close resumed>)        = 0
[pid  3606] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3746] close(3 <unfinished ...>
[pid  3745] mkdir("./file0", 0777 <unfinished ...>
[pid  3606] close(3 <unfinished ...>
[pid  3746] <... close resumed>)        = 0
[pid  3745] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3606] <... close resumed>)        = 0
[pid  3746] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3746] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3746] pipe2([3, 4], 0)            = 0
[pid  3746] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3745] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3745] pipe2([3, 4], 0)            = 0
[pid  3745] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3747
./strace-static-x86_64: Process 3747 attached
[pid  3739] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3747] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3747] setpgid(0, 0)               = 0
[pid  3747] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3747] write(3, "1000", 4)         = 4
[pid  3747] close(3 <unfinished ...>
[pid  3739] exit_group(0 <unfinished ...>
[pid  3747] <... close resumed>)        = 0
[pid  3747] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3747] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3747] pipe2([3, 4], 0)            = 0
[pid  3747] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3739] <... exit_group resumed>)   = ?
[pid  3739] +++ exited with 0 +++
[pid  3605] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3739, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3605] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  3605] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3605] close(3)                    = 0
[pid  3605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3748
./strace-static-x86_64: Process 3748 attached
[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] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3748] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3748] pipe2([3, 4], 0)            = 0
[pid  3748] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3743] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3743] exit_group(0)               = ?
[pid  3743] +++ exited with 0 +++
[pid  3610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3743, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
[pid  3610] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3
[pid  3610] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3610] close(3 <unfinished ...>
[pid  3746] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3610] <... close resumed>)        = 0
[pid  3746] exit_group(0)               = ?
[   47.681665][ T3746] Cache volume key already in use (9p,(null),)
[   47.681867][ T3747] Cache volume key already in use (9p,(null),)
[   47.688840][ T3745] Cache volume key already in use (9p,(null),)
[   47.697981][ T3748] Cache volume key already in use (9p,(null),)
[   47.702848][ T3744] Cache volume key already in use (9p,(null),)
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3746] +++ exited with 0 +++
./strace-static-x86_64: Process 3749 attached
[pid  3749] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3749] setpgid(0, 0)               = 0
[pid  3749] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3749] write(3, "1000", 4)         = 4
[pid  3749] close(3)                    = 0
[pid  3749] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3749] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3749] pipe2([3, 4], 0)            = 0
[pid  3749] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3611] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3746, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3610] <... clone resumed>, child_tidptr=0x55555737d690) = 3749
[pid  3744] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3744] exit_group(0)               = ?
[pid  3744] +++ exited with 0 +++
[pid  3611] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3
[pid  3607] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3744, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3611] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3607] restart_syscall(<... resuming interrupted clone ...> <unfinished ...>
[pid  3611] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3607] <... restart_syscall resumed>) = 0
[pid  3611] close(3)                    = 0
[pid  3611] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3607] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3
[pid  3611] <... clone resumed>, child_tidptr=0x55555737d690) = 3750
[pid  3607] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3607] close(3)                    = 0
[pid  3607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555737d690) = 3751
./strace-static-x86_64: Process 3751 attached
./strace-static-x86_64: Process 3750 attached
[pid  3750] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3751] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3750] <... prctl resumed>)        = 0
[pid  3745] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3750] setpgid(0, 0 <unfinished ...>
[pid  3745] exit_group(0 <unfinished ...>
[pid  3751] <... prctl resumed>)        = 0
[pid  3750] <... setpgid resumed>)      = 0
[pid  3745] <... exit_group resumed>)   = ?
[pid  3751] setpgid(0, 0 <unfinished ...>
[pid  3750] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3745] +++ exited with 0 +++
[pid  3751] <... setpgid resumed>)      = 0
[pid  3750] <... openat resumed>)       = 3
[pid  3751] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3750] write(3, "1000", 4 <unfinished ...>
[pid  3608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3745, si_uid=0, si_status=0, si_utime=0, si_stime=4} ---
[pid  3751] <... openat resumed>)       = 3
[pid  3750] <... write resumed>)        = 4
[pid  3608] openat(AT_FDCWD, "/dev/loop3", O_RDWR <unfinished ...>
[pid  3751] write(3, "1000", 4 <unfinished ...>
[pid  3750] close(3 <unfinished ...>
[pid  3751] <... write resumed>)        = 4
[pid  3750] <... close resumed>)        = 0
[pid  3608] <... openat resumed>)       = 3
[pid  3751] close(3 <unfinished ...>
[pid  3750] mkdir("./file0", 0777 <unfinished ...>
[pid  3608] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3751] <... close resumed>)        = 0
[pid  3750] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3608] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3751] mkdir("./file0", 0777 <unfinished ...>
[pid  3750] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3608] close(3 <unfinished ...>
[pid  3751] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3750] pipe2( <unfinished ...>
[pid  3608] <... close resumed>)        = 0
[pid  3751] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3750] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3751] pipe2( <unfinished ...>
[pid  3750] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3751] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3751] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3608] <... clone resumed>, child_tidptr=0x55555737d690) = 3752
./strace-static-x86_64: Process 3752 attached
[pid  3748] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3752] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3748] exit_group(0)               = ?
[pid  3752] setpgid(0, 0)               = 0
[pid  3752] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3752] write(3, "1000", 4)         = 4
[pid  3752] close(3)                    = 0
[pid  3752] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3752] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3748] +++ exited with 0 +++
[pid  3752] pipe2( <unfinished ...>
[pid  3605] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3748, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3752] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3752] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3605] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  3605] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3605] close(3)                    = 0
[pid  3605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3747] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3747] exit_group(0)               = ?
[pid  3747] +++ exited with 0 +++
[pid  3606] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3747, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3
[pid  3606] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3606] close(3)                    = 0
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3605] <... clone resumed>, child_tidptr=0x55555737d690) = 3753
[pid  3606] <... clone resumed>, child_tidptr=0x55555737d690) = 3754
./strace-static-x86_64: Process 3754 attached
[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./strace-static-x86_64: Process 3753 attached
)         = 4
[pid  3754] close(3)                    = 0
[pid  3753] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3754] mkdir("./file0", 0777 <unfinished ...>
[pid  3753] <... prctl resumed>)        = 0
[pid  3754] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3753] setpgid(0, 0 <unfinished ...>
[pid  3754] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3754] pipe2([3, 4], 0)            = 0
[pid  3754] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3753] <... setpgid resumed>)      = 0
[pid  3753] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3753] write(3, "1000", 4)         = 4
[pid  3753] close(3)                    = 0
[pid  3749] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3753] mkdir("./file0", 0777 <unfinished ...>
[pid  3749] exit_group(0 <unfinished ...>
[pid  3753] <... mkdir resumed>)        = -1 EEXIST (File exists)
[   47.888293][ T3751] Cache volume key already in use (9p,(null),)
[   47.895357][ T3750] Cache volume key already in use (9p,(null),)
[   47.903840][ T3752] Cache volume key already in use (9p,(null),)
[pid  3753] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3749] <... exit_group resumed>)   = ?
[pid  3753] pipe2([3, 4], 0)            = 0
[pid  3749] +++ exited with 0 +++
[pid  3753] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3752] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3749, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3752] exit_group(0 <unfinished ...>
[pid  3610] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3610] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3
[pid  3610] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3610] close(3 <unfinished ...>
[pid  3752] <... exit_group resumed>)   = ?
[pid  3610] <... close resumed>)        = 0
[pid  3610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3752] +++ exited with 0 +++
[pid  3610] <... clone resumed>, child_tidptr=0x55555737d690) = 3755
[pid  3608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3752, si_uid=0, si_status=0, si_utime=0, si_stime=3} ---
[pid  3608] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3
./strace-static-x86_64: Process 3755 attached
[pid  3608] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3755] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3608] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3755] <... prctl resumed>)        = 0
[pid  3608] close(3 <unfinished ...>
[pid  3755] setpgid(0, 0 <unfinished ...>
[pid  3608] <... close resumed>)        = 0
[pid  3755] <... setpgid resumed>)      = 0
[pid  3608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3755] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3608] <... clone resumed>, child_tidptr=0x55555737d690) = 3756
[pid  3755] write(3, "1000", 4 <unfinished ...>
[pid  3750] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3755] <... write resumed>)        = 4
[pid  3755] close(3 <unfinished ...>
[pid  3750] exit_group(0 <unfinished ...>
[pid  3755] <... close resumed>)        = 0
[pid  3750] <... exit_group resumed>)   = ?
[pid  3755] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3755] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3755] pipe2(./strace-static-x86_64: Process 3756 attached
[3, 4], 0)            = 0
[pid  3756] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3755] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3750] +++ exited with 0 +++
[pid  3756] <... prctl resumed>)        = 0
[pid  3751] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3611] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3750, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3751] exit_group(0)               = ?
[pid  3751] +++ exited with 0 +++
[pid  3611] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  3607] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3751, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3611] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3
[pid  3611] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  3611] close(3 <unfinished ...>
[pid  3607] openat(AT_FDCWD, "/dev/loop2", O_RDWR <unfinished ...>
[pid  3756] setpgid(0, 0 <unfinished ...>
[pid  3754] <... mount resumed>)        = -1 EFAULT (Bad address)
[pid  3611] <... close resumed>)        = 0
[pid  3607] <... openat resumed>)       = 3
[pid  3756] <... setpgid resumed>)      = 0
[pid  3611] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3607] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3756] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  3607] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3756] <... openat resumed>)       = 3
[pid  3611] <... clone resumed>, child_tidptr=0x55555737d690) = 3757
[pid  3607] close(3 <unfinished ...>
[pid  3756] write(3, "1000", 4 <unfinished ...>
[pid  3754] exit_group(0 <unfinished ...>
[pid  3607] <... close resumed>)        = 0
[pid  3756] <... write resumed>)        = 4
[pid  3754] <... exit_group resumed>)   = ?
[pid  3607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3756] close(3 <unfinished ...>
[pid  3754] +++ exited with 0 +++
[pid  3756] <... close resumed>)        = 0
[pid  3607] <... clone resumed>, child_tidptr=0x55555737d690) = 3758
[pid  3756] mkdir("./file0", 0777 <unfinished ...>
[pid  3606] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3754, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid  3756] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  3606] openat(AT_FDCWD, "/dev/loop1", O_RDWR <unfinished ...>
[pid  3756] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3606] <... openat resumed>)       = 3
[pid  3756] pipe2( <unfinished ...>
[pid  3606] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  3756] <... pipe2 resumed>[3, 4], 0) = 0
[pid  3606] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  3756] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"... <unfinished ...>
[pid  3606] close(3./strace-static-x86_64: Process 3758 attached
[   48.039272][ T3753] ==================================================================
[   48.047395][ T3753] BUG: KASAN: use-after-free in __kernfs_remove+0xa09/0xb50
[   48.054741][ T3753] Read of size 2 at addr ffff88802155b9a8 by task syz-executor183/3753
[   48.063014][ T3753] 
[   48.065334][ T3753] CPU: 1 PID: 3753 Comm: syz-executor183 Not tainted 6.0.0-rc4-syzkaller-00062-g0066f1b0e275 #0
[   48.075753][ T3753] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
[   48.085836][ T3753] Call Trace:
)                    = 0
[pid  3758] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  3606] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  3758] <... prctl resumed>)        = 0
[pid  3758] setpgid(0, 0 <unfinished ...>
[pid  3606] <... clone resumed>, child_tidptr=0x55555737d690) = 3759
[pid  3758] <... setpgid resumed>)      = 0
[pid  3758] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3758] write(3, "1000", 4)         = 4
[pid  3758] close(3)                    = 0
[pid  3758] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3758] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[   48.089138][ T3753]  <TASK>
[   48.092084][ T3753]  dump_stack_lvl+0xcd/0x134
[   48.096748][ T3753]  print_report.cold+0x2ba/0x719
[   48.101718][ T3753]  ? __kernfs_remove+0xa09/0xb50
[   48.106688][ T3753]  kasan_report+0xb1/0x1e0
[   48.111202][ T3753]  ? __kernfs_remove+0xa09/0xb50
[   48.116139][ T3753]  __kernfs_remove+0xa09/0xb50
[   48.120918][ T3753]  ? kernfs_next_descendant_post+0x2f0/0x2f0
[   48.126942][ T3753]  ? kernfs_name_hash+0xf1/0x120
[   48.131919][ T3753]  kernfs_remove_by_name_ns+0xa8/0x110
[   48.137436][ T3753]  sysfs_slab_add+0x13e/0x1e0
[   48.142168][ T3753]  __kmem_cache_create+0x509/0x690
[   48.147287][ T3753]  kmem_cache_create_usercopy+0x1f9/0x300
[   48.153020][ T3753]  p9_client_create+0xca5/0x1070
[   48.158001][ T3753]  ? p9_client_rpc+0xce0/0xce0
[   48.162802][ T3753]  ? lockdep_init_map_type+0x21a/0x7f0
[   48.168325][ T3753]  ? rcu_read_lock_sched_held+0x3a/0x70
[   48.173913][ T3753]  ? __raw_spin_lock_init+0x36/0x110
[   48.179242][ T3753]  v9fs_session_init+0x1e2/0x1810
[   48.184320][ T3753]  ? find_held_lock+0x2d/0x110
[   48.189151][ T3753]  ? v9fs_show_options+0x780/0x780
[   48.194326][ T3753]  ? rcu_read_lock_sched_held+0x3a/0x70
[   48.199941][ T3753]  ? trace_kmalloc+0x32/0x100
[   48.204668][ T3753]  v9fs_mount+0xba/0xc90
[   48.208955][ T3753]  ? v9fs_statfs+0x4d0/0x4d0
[   48.213594][ T3753]  ? apparmor_capable+0x1d8/0x460
[   48.218675][ T3753]  ? v9fs_statfs+0x4d0/0x4d0
[   48.223317][ T3753]  legacy_get_tree+0x105/0x220
[   48.228142][ T3753]  vfs_get_tree+0x89/0x2f0
[   48.232615][ T3753]  path_mount+0x1326/0x1e20
[   48.237163][ T3753]  ? kmem_cache_free+0xeb/0x5b0
[   48.242048][ T3753]  ? finish_automount+0x960/0x960
[   48.247112][ T3753]  ? putname+0xfe/0x140
[   48.251315][ T3753]  __x64_sys_mount+0x27f/0x300
[   48.256120][ T3753]  ? copy_mnt_ns+0xae0/0xae0
[   48.260745][ T3753]  ? lockdep_hardirqs_on+0x79/0x100
[   48.265976][ T3753]  ? _raw_spin_unlock_irq+0x2a/0x40
[   48.271205][ T3753]  ? ptrace_notify+0xfa/0x140
[   48.275918][ T3753]  do_syscall_64+0x35/0xb0
[   48.280377][ T3753]  entry_SYSCALL_64_after_hwframe+0x63/0xcd
[   48.286299][ T3753] RIP: 0033:0x7efc38dcf7b9
[   48.290751][ T3753] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
[   48.310403][ T3753] RSP: 002b:00007ffd13608978 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[   48.318865][ T3753] RAX: ffffffffffffffda RBX: 00007ffd136089b0 RCX: 00007efc38dcf7b9
[   48.326885][ T3753] RDX: 0000000020000100 RSI: 00000000200000c0 RDI: 0000000000000000
[   48.334922][ T3753] RBP: 0000000000000000 R08: 0000000020000140 R09: 000000000000ba26
[   48.342961][ T3753] R10: 0000000000000001 R11: 0000000000000246 R12: 00000000000f4240
[   48.350986][ T3753] R13: 000000000000ba26 R14: 00007ffd1360899c R15: 00007ffd136089a0
[   48.359012][ T3753]  </TASK>
[   48.362043][ T3753] 
[   48.364356][ T3753] Allocated by task 3754:
[   48.368675][ T3753]  kasan_save_stack+0x1e/0x40
[   48.373386][ T3753]  __kasan_slab_alloc+0x90/0xc0
[   48.378290][ T3753]  kmem_cache_alloc+0x267/0x3b0
[   48.383188][ T3753]  __kernfs_new_node+0xd4/0x8b0
[   48.388082][ T3753]  kernfs_create_dir_ns+0x9c/0x220
[   48.393239][ T3753]  sysfs_create_dir_ns+0x127/0x290
[   48.398389][ T3753]  kobject_add_internal+0x2c9/0x8f0
[   48.403652][ T3753]  kobject_init_and_add+0x101/0x160
[   48.408893][ T3753]  sysfs_slab_add+0x161/0x1e0
[   48.413711][ T3753]  __kmem_cache_create+0x509/0x690
[   48.418865][ T3753]  kmem_cache_create_usercopy+0x1f9/0x300
[   48.424894][ T3753]  p9_client_create+0xca5/0x1070
[   48.429881][ T3753]  v9fs_session_init+0x1e2/0x1810
[   48.434969][ T3753]  v9fs_mount+0xba/0xc90
[   48.439243][ T3753]  legacy_get_tree+0x105/0x220
[   48.444060][ T3753]  vfs_get_tree+0x89/0x2f0
[   48.448510][ T3753]  path_mount+0x1326/0x1e20
[   48.453043][ T3753]  __x64_sys_mount+0x27f/0x300
[   48.457860][ T3753]  do_syscall_64+0x35/0xb0
[   48.462330][ T3753]  entry_SYSCALL_64_after_hwframe+0x63/0xcd
[   48.468280][ T3753] 
[   48.470625][ T3753] Freed by task 3753:
[   48.474629][ T3753]  kasan_save_stack+0x1e/0x40
[   48.479352][ T3753]  kasan_set_track+0x21/0x30
[   48.484079][ T3753]  kasan_set_free_info+0x20/0x30
[   48.489069][ T3753]  ____kasan_slab_free+0x166/0x1c0
[   48.494217][ T3753]  slab_free_freelist_hook+0x8b/0x1c0
[   48.499614][ T3753]  kmem_cache_free+0xeb/0x5b0
[   48.504582][ T3753]  kernfs_put.part.0+0x2c4/0x540
[   48.509557][ T3753]  kernfs_put+0x42/0x50
[   48.513741][ T3753]  __kernfs_remove+0x7a6/0xb50
[   48.518625][ T3753]  kernfs_remove_by_name_ns+0xa8/0x110
[   48.524130][ T3753]  sysfs_slab_add+0x13e/0x1e0
[   48.528843][ T3753]  __kmem_cache_create+0x509/0x690
[   48.533995][ T3753]  kmem_cache_create_usercopy+0x1f9/0x300
[   48.539736][ T3753]  p9_client_create+0xca5/0x1070
[   48.544705][ T3753]  v9fs_session_init+0x1e2/0x1810
[   48.549774][ T3753]  v9fs_mount+0xba/0xc90
[   48.554064][ T3753]  legacy_get_tree+0x105/0x220
[   48.558864][ T3753]  vfs_get_tree+0x89/0x2f0
[   48.563421][ T3753]  path_mount+0x1326/0x1e20
[   48.567972][ T3753]  __x64_sys_mount+0x27f/0x300
[   48.572780][ T3753]  do_syscall_64+0x35/0xb0
[   48.577249][ T3753]  entry_SYSCALL_64_after_hwframe+0x63/0xcd
[   48.583190][ T3753] 
[   48.585526][ T3753] The buggy address belongs to the object at ffff88802155b910
[   48.585526][ T3753]  which belongs to the cache kernfs_node_cache of size 168
[   48.600134][ T3753] The buggy address is located 152 bytes inside of
[   48.600134][ T3753]  168-byte region [ffff88802155b910, ffff88802155b9b8)
[   48.613450][ T3753] 
[   48.615804][ T3753] The buggy address belongs to the physical page:
[   48.622249][ T3753] page:ffffea00008556c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2155b
[   48.632446][ T3753] flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
[   48.640043][ T3753] raw: 00fff00000000200 ffffea000084be40 dead000000000003 ffff888140007b40
[   48.648657][ T3753] raw: 0000000000000000 0000000000110011 00000001ffffffff 0000000000000000
[   48.657257][ T3753] page dumped because: kasan: bad access detected
[   48.663681][ T3753] page_owner tracks the page as allocated
[   48.669391][ T3753] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 3665, tgid 3665 (syz-executor183), ts 44196836778, free_ts 44192820605
[   48.688018][ T3753]  get_page_from_freelist+0x109b/0x2ce0
[   48.693612][ T3753]  __alloc_pages+0x1c7/0x510
[   48.698241][ T3753]  alloc_pages+0x1a6/0x270
[   48.702671][ T3753]  allocate_slab+0x27e/0x3d0
[   48.707284][ T3753]  ___slab_alloc+0x7f1/0xe10
[   48.711895][ T3753]  __slab_alloc.constprop.0+0x4d/0xa0
[   48.717260][ T3753]  kmem_cache_alloc+0x38c/0x3b0
[   48.722110][ T3753]  __kernfs_new_node+0xd4/0x8b0
[   48.726998][ T3753]  kernfs_new_node+0x93/0x120
[   48.731702][ T3753]  __kernfs_create_file+0x51/0x350
[   48.736846][ T3753]  sysfs_add_file_mode_ns+0x20f/0x3f0
[   48.742243][ T3753]  internal_create_group+0x322/0xb10
[   48.747548][ T3753]  sysfs_slab_add+0x177/0x1e0
[   48.752254][ T3753]  __kmem_cache_create+0x509/0x690
[   48.757388][ T3753]  kmem_cache_create_usercopy+0x1f9/0x300
[   48.763134][ T3753]  p9_client_create+0xca5/0x1070
[   48.768099][ T3753] page last free stack trace:
[   48.772777][ T3753]  free_pcp_prepare+0x5e4/0xd20
[   48.777795][ T3753]  free_unref_page+0x19/0x4d0
[   48.782693][ T3753]  __unfreeze_partials+0x17c/0x1a0
[   48.787841][ T3753]  qlist_free_all+0x6a/0x170
[   48.792487][ T3753]  kasan_quarantine_reduce+0x180/0x200
[   48.797976][ T3753]  __kasan_slab_alloc+0xa2/0xc0
[   48.803201][ T3753]  kmem_cache_alloc_node+0x2b1/0x3f0
[   48.808518][ T3753]  __alloc_skb+0x210/0x2f0
[   48.812985][ T3753]  tcp_stream_alloc_skb+0x38/0x580
[   48.818132][ T3753]  tcp_sendmsg_locked+0xc36/0x2f80
[   48.823263][ T3753]  tcp_sendmsg+0x2b/0x40
[   48.827508][ T3753]  inet_sendmsg+0x99/0xe0
[   48.831952][ T3753]  sock_sendmsg+0xcf/0x120
[   48.836393][ T3753]  sock_write_iter+0x291/0x3d0
[   48.841626][ T3753]  vfs_write+0x9e9/0xdd0
[   48.846161][ T3753]  ksys_write+0x1e8/0x250
[   48.850509][ T3753] 
[   48.852825][ T3753] Memory state around the buggy address:
[   48.858439][ T3753]  ffff88802155b880: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc
[   48.867029][ T3753]  ffff88802155b900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb
[   48.875114][ T3753] >ffff88802155b980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa
[   48.883211][ T3753]                                   ^
[pid  3758] pipe2([3, 4], 0)            = 0
[pid  3758] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"..../strace-static-x86_64: Process 3757 attached
 <unfinished ...>
[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] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3757] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3757] pipe2([3, 4], 0)            = 0
[pid  3757] mount(NULL, "./file0", "9p", MS_RDONLY, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004,fscache,access=any,fsuuid=f4ba7570-2899-c"..../strace-static-x86_64: Process 3759 attached
 <unfinished ...>
[pid  3759] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  3759] setpgid(0, 0)               = 0
[pid  3759] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  3759] write(3, "1000", 4)         = 4
[pid  3759] close(3)                    = 0
[pid  3759] mkdir("./file0", 0777)      = -1 EEXIST (File exists)
[pid  3759] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid  3759] pipe2([3, 4], 0)            = 0
[   48.888614][ T3753]  ffff88802155ba00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   48.896713][ T3753]  ffff88802155ba80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb
[   48.904819][ T3753] ==================================================================
[   48.915349][ T3753] Kernel panic - not syncing: panic_on_warn set ...
[   48.921958][ T3753] CPU: 1 PID: 3753 Comm: syz-executor183 Not tainted 6.0.0-rc4-syzkaller-00062-g0066f1b0e275 #0
[   48.932400][ T3753] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
[   48.942499][ T3753] Call Trace:
[   48.945793][ T3753]  <TASK>
[   48.948729][ T3753]  dump_stack_lvl+0xcd/0x134
[   48.953360][ T3753]  panic+0x2c8/0x627
[   48.957301][ T3753]  ? panic_print_sys_info.part.0+0x10b/0x10b
[   48.963327][ T3753]  ? preempt_schedule_common+0x59/0xc0
[   48.968823][ T3753]  ? preempt_schedule_thunk+0x16/0x18
[   48.974233][ T3753]  ? __kernfs_remove+0xa09/0xb50
[   48.979201][ T3753]  end_report.part.0+0x3f/0x7c
[   48.983997][ T3753]  kasan_report.cold+0xa/0xf
[   48.988615][ T3753]  ? __kernfs_remove+0xa09/0xb50
[   48.993680][ T3753]  __kernfs_remove+0xa09/0xb50
[   48.998495][ T3753]  ? kernfs_next_descendant_post+0x2f0/0x2f0
[   49.004597][ T3753]  ? kernfs_name_hash+0xf1/0x120
[   49.009571][ T3753]  kernfs_remove_by_name_ns+0xa8/0x110
[   49.015078][ T3753]  sysfs_slab_add+0x13e/0x1e0
[   49.019790][ T3753]  __kmem_cache_create+0x509/0x690
[   49.025043][ T3753]  kmem_cache_create_usercopy+0x1f9/0x300
[   49.030815][ T3753]  p9_client_create+0xca5/0x1070
[   49.035783][ T3753]  ? p9_client_rpc+0xce0/0xce0
[   49.040587][ T3753]  ? lockdep_init_map_type+0x21a/0x7f0
[   49.046123][ T3753]  ? rcu_read_lock_sched_held+0x3a/0x70
[   49.051704][ T3753]  ? __raw_spin_lock_init+0x36/0x110
[   49.057028][ T3753]  v9fs_session_init+0x1e2/0x1810
[   49.062097][ T3753]  ? find_held_lock+0x2d/0x110
[   49.066890][ T3753]  ? v9fs_show_options+0x780/0x780
[   49.072039][ T3753]  ? rcu_read_lock_sched_held+0x3a/0x70
[   49.077614][ T3753]  ? trace_kmalloc+0x32/0x100
[   49.082329][ T3753]  v9fs_mount+0xba/0xc90
[   49.086601][ T3753]  ? v9fs_statfs+0x4d0/0x4d0
[   49.091222][ T3753]  ? apparmor_capable+0x1d8/0x460
[   49.096289][ T3753]  ? v9fs_statfs+0x4d0/0x4d0
[   49.100914][ T3753]  legacy_get_tree+0x105/0x220
[   49.105725][ T3753]  vfs_get_tree+0x89/0x2f0
[   49.110180][ T3753]  path_mount+0x1326/0x1e20
[   49.114697][ T3753]  ? kmem_cache_free+0xeb/0x5b0
[   49.119587][ T3753]  ? finish_automount+0x960/0x960
[   49.124661][ T3753]  ? putname+0xfe/0x140
[   49.128868][ T3753]  __x64_sys_mount+0x27f/0x300
[   49.133668][ T3753]  ? copy_mnt_ns+0xae0/0xae0
[   49.138291][ T3753]  ? lockdep_hardirqs_on+0x79/0x100
[   49.143529][ T3753]  ? _raw_spin_unlock_irq+0x2a/0x40
[   49.148773][ T3753]  ? ptrace_notify+0xfa/0x140
[   49.153497][ T3753]  do_syscall_64+0x35/0xb0
[   49.157961][ T3753]  entry_SYSCALL_64_after_hwframe+0x63/0xcd
[   49.163989][ T3753] RIP: 0033:0x7efc38dcf7b9
[   49.168455][ T3753] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
[   49.188103][ T3753] RSP: 002b:00007ffd13608978 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[   49.196543][ T3753] RAX: ffffffffffffffda RBX: 00007ffd136089b0 RCX: 00007efc38dcf7b9
[   49.204522][ T3753] RDX: 0000000020000100 RSI: 00000000200000c0 RDI: 0000000000000000
[   49.212510][ T3753] RBP: 0000000000000000 R08: 0000000020000140 R09: 000000000000ba26
[   49.220658][ T3753] R10: 0000000000000001 R11: 0000000000000246 R12: 00000000000f4240
[   49.228822][ T3753] R13: 000000000000ba26 R14: 00007ffd1360899c R15: 00007ffd136089a0
[   49.236834][ T3753]  </TASK>
[   49.240322][ T3753] Kernel Offset: disabled
[   49.244661][ T3753] Rebooting in 86400 seconds..