./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2744744419 <...> DUID 00:04:ac:03:58:10:d0:76:5c:28:30:a7:8a:8b:4a:a3:06:e2 forked to background, child pid 3177 [ 27.803714][ T3178] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.816651][ T3178] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.29' (ECDSA) to the list of known hosts. execve("./syz-executor2744744419", ["./syz-executor2744744419"], 0x7ffe31f715d0 /* 10 vars */) = 0 brk(NULL) = 0x555557095000 brk(0x555557095c40) = 0x555557095c40 arch_prctl(ARCH_SET_FS, 0x555557095300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 set_tid_address(0x5555570955d0) = 3598 set_robust_list(0x5555570955e0, 24) = 0 rt_sigaction(SIGRTMIN, {sa_handler=0x7fe80d10e440, sa_mask=[], sa_flags=SA_RESTORER|SA_SIGINFO, sa_restorer=0x7fe80d10eb10}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7fe80d10e4e0, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe80d10eb10}, NULL, 8) = 0 rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2744744419", 4096) = 28 brk(0x5555570b6c40) = 0x5555570b6c40 brk(0x5555570b7000) = 0x5555570b7000 mprotect(0x7fe80d1cf000, 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 openat(AT_FDCWD, "/sys/kernel/debug/failslab/ignore-gfp-wait", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_futex/ignore-private", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/ignore-gfp-highmem", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/ignore-gfp-wait", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/min-order", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555570955d0) = 3599 ./strace-static-x86_64: Process 3599 attached [pid 3599] set_robust_list(0x5555570955e0, 24) = 0 [pid 3599] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3599] setpgid(0, 0) = 0 [pid 3599] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3599] write(3, "1000", 4) = 4 [pid 3599] close(3) = 0 [pid 3599] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3599] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe80d0de000 [pid 3599] mprotect(0x7fe80d0df000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3599] clone(child_stack=0x7fe80d0fe3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3600 attached , parent_tid=[3600], tls=0x7fe80d0fe700, child_tidptr=0x7fe80d0fe9d0) = 3600 [pid 3599] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3599] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3600] set_robust_list(0x7fe80d0fe9e0, 24) = 0 [pid 3600] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3600] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3599] <... futex resumed>) = 0 [pid 3599] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3599] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3600] socketpair(AF_UNIX, SOCK_STREAM, 0, [4, 5]) = 0 [pid 3600] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3599] <... futex resumed>) = 0 [pid 3599] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3599] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3600] ioctl(3, NBD_SET_SOCK, 4) = 0 [pid 3600] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3599] <... futex resumed>) = 0 [pid 3600] dup(4 [pid 3599] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3600] <... dup resumed>) = 6 [pid 3599] <... futex resumed>) = 0 [pid 3600] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3599] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3600] <... futex resumed>) = 0 [pid 3599] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3600] ioctl(3, NBD_SET_SOCK, 6 [pid 3599] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3599] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3600] <... ioctl resumed>) = 0 [pid 3600] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3599] <... futex resumed>) = 0 [pid 3600] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3599] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3600] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3599] <... futex resumed>) = 0 [pid 3600] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3599] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3600] <... openat resumed>) = 7 [pid 3600] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3599] <... futex resumed>) = 0 [pid 3600] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3599] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3600] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3599] <... futex resumed>) = 0 [pid 3600] ioctl(7, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE [pid 3599] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3600] <... ioctl resumed>) = 0 [pid 3600] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3599] <... futex resumed>) = 0 [pid 3600] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3599] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3600] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3599] <... futex resumed>) = 0 [pid 3600] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3599] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3600] <... openat resumed>) = 8 [pid 3600] write(8, "13", 2) = 2 [pid 3600] ioctl(7, NBD_DO_IT [pid 3599] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) syzkaller login: [ 51.294562][ T3600] Increasing nr_hw_queues to 2 fails, fallback to 1 [pid 3599] exit_group(0) = ? [pid 3600] <... ioctl resumed>) = ? [ 51.437374][ T3600] block nbd0: shutting down sockets [pid 3600] +++ exited with 0 +++ [pid 3599] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3599, si_uid=0, si_status=0, si_utime=0, si_stime=4} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3604 attached , child_tidptr=0x5555570955d0) = 3604 [pid 3604] set_robust_list(0x5555570955e0, 24) = 0 [pid 3604] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3604] setpgid(0, 0) = 0 [pid 3604] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3604] write(3, "1000", 4) = 4 [pid 3604] close(3) = 0 [pid 3604] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3604] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe80d0de000 [pid 3604] mprotect(0x7fe80d0df000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3604] clone(child_stack=0x7fe80d0fe3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3605], tls=0x7fe80d0fe700, child_tidptr=0x7fe80d0fe9d0) = 3605 [pid 3604] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3604] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3605 attached [pid 3605] set_robust_list(0x7fe80d0fe9e0, 24) = 0 [pid 3605] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3605] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3604] <... futex resumed>) = 0 [pid 3604] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3604] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3605] <... futex resumed>) = 1 [pid 3605] socketpair(AF_UNIX, SOCK_STREAM, 0, [4, 5]) = 0 [pid 3605] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3604] <... futex resumed>) = 0 [pid 3604] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3604] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3605] <... futex resumed>) = 1 [pid 3605] ioctl(3, NBD_SET_SOCK, 4) = 0 [pid 3605] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3604] <... futex resumed>) = 0 [pid 3605] dup(4 [pid 3604] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3605] <... dup resumed>) = 6 [pid 3604] <... futex resumed>) = 0 [pid 3605] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3604] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3605] <... futex resumed>) = 0 [pid 3604] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3605] ioctl(3, NBD_SET_SOCK, 6 [pid 3604] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3604] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3605] <... ioctl resumed>) = 0 [pid 3605] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3604] <... futex resumed>) = 0 [pid 3605] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3604] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3605] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3604] <... futex resumed>) = 0 [pid 3605] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3604] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3605] <... openat resumed>) = 7 [pid 3605] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3604] <... futex resumed>) = 0 [pid 3605] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3604] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3605] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3604] <... futex resumed>) = 0 [pid 3605] ioctl(7, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE [pid 3604] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3605] <... ioctl resumed>) = 0 [pid 3605] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3604] <... futex resumed>) = 0 [pid 3605] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3604] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3605] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3604] <... futex resumed>) = 0 [pid 3605] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3604] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3605] <... openat resumed>) = 8 [pid 3605] write(8, "13", 2) = 2 [pid 3605] ioctl(7, NBD_DO_IT [pid 3604] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 3604] exit_group(0 [pid 3605] <... ioctl resumed>) = ? [pid 3604] <... exit_group resumed>) = ? [pid 3605] +++ exited with 0 +++ [pid 3604] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3604, si_uid=0, si_status=0, si_utime=0, si_stime=4} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3606 attached , child_tidptr=0x5555570955d0) = 3606 [pid 3606] set_robust_list(0x5555570955e0, 24) = 0 [pid 3606] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3606] setpgid(0, 0) = 0 [pid 3606] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3606] write(3, "1000", 4) = 4 [pid 3606] close(3) = 0 [pid 3606] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3606] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe80d0de000 [pid 3606] mprotect(0x7fe80d0df000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3606] clone(child_stack=0x7fe80d0fe3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3607 attached , parent_tid=[3607], tls=0x7fe80d0fe700, child_tidptr=0x7fe80d0fe9d0) = 3607 [pid 3606] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3607] set_robust_list(0x7fe80d0fe9e0, 24 [pid 3606] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3607] <... set_robust_list resumed>) = 0 [pid 3607] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3607] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3606] <... futex resumed>) = 0 [pid 3607] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3606] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3607] <... futex resumed>) = 0 [pid 3606] <... futex resumed>) = 1 [pid 3607] socketpair(AF_UNIX, SOCK_STREAM, 0, [pid 3606] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3607] <... socketpair resumed>[4, 5]) = 0 [pid 3607] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3606] <... futex resumed>) = 0 [pid 3607] ioctl(3, NBD_SET_SOCK, 4 [pid 3606] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 51.778732][ T3605] block nbd0: shutting down sockets [pid 3606] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3607] <... ioctl resumed>) = 0 [pid 3607] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3606] <... futex resumed>) = 0 [pid 3607] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3606] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3607] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3606] <... futex resumed>) = 0 [pid 3607] dup(4 [pid 3606] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3607] <... dup resumed>) = 6 [pid 3607] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3606] <... futex resumed>) = 0 [pid 3607] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3606] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3607] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3606] <... futex resumed>) = 0 [pid 3607] ioctl(3, NBD_SET_SOCK, 6 [pid 3606] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3607] <... ioctl resumed>) = 0 [pid 3607] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3606] <... futex resumed>) = 0 [pid 3606] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3607] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3606] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3607] <... openat resumed>) = 7 [pid 3607] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3606] <... futex resumed>) = 0 [pid 3607] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3606] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3607] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3606] <... futex resumed>) = 0 [pid 3607] ioctl(7, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE [pid 3606] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3607] <... ioctl resumed>) = 0 [pid 3607] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3606] <... futex resumed>) = 0 [pid 3607] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3606] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3607] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3606] <... futex resumed>) = 0 [pid 3607] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3606] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3607] <... openat resumed>) = 8 [pid 3607] write(8, "13", 2) = 2 [pid 3607] ioctl(7, NBD_DO_IT [pid 3606] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 3606] exit_group(0 [pid 3607] <... ioctl resumed>) = ? [pid 3606] <... exit_group resumed>) = ? [pid 3607] +++ exited with 0 +++ [ 52.053133][ T3607] block nbd0: shutting down sockets [pid 3606] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3606, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3608 attached , child_tidptr=0x5555570955d0) = 3608 [pid 3608] set_robust_list(0x5555570955e0, 24) = 0 [pid 3608] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3608] setpgid(0, 0) = 0 [pid 3608] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3608] write(3, "1000", 4) = 4 [pid 3608] close(3) = 0 [pid 3608] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3608] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe80d0de000 [pid 3608] mprotect(0x7fe80d0df000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3608] clone(child_stack=0x7fe80d0fe3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3609], tls=0x7fe80d0fe700, child_tidptr=0x7fe80d0fe9d0) = 3609 [pid 3608] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3608] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3609 attached [pid 3609] set_robust_list(0x7fe80d0fe9e0, 24) = 0 [pid 3609] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3609] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3608] <... futex resumed>) = 0 [pid 3608] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3608] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3609] <... futex resumed>) = 1 [pid 3609] socketpair(AF_UNIX, SOCK_STREAM, 0, [4, 5]) = 0 [pid 3609] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3608] <... futex resumed>) = 0 [pid 3608] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3608] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3609] <... futex resumed>) = 1 [pid 3609] ioctl(3, NBD_SET_SOCK, 4) = 0 [pid 3609] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3608] <... futex resumed>) = 0 [pid 3609] dup(4 [pid 3608] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3609] <... dup resumed>) = 6 [pid 3608] <... futex resumed>) = 0 [pid 3609] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3608] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3609] <... futex resumed>) = 0 [pid 3608] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3609] ioctl(3, NBD_SET_SOCK, 6 [pid 3608] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3608] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3609] <... ioctl resumed>) = 0 [pid 3609] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3608] <... futex resumed>) = 0 [pid 3609] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3608] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3609] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3608] <... futex resumed>) = 0 [pid 3609] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3608] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3609] <... openat resumed>) = 7 [pid 3609] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3608] <... futex resumed>) = 0 [pid 3609] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3608] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3609] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3608] <... futex resumed>) = 0 [pid 3609] ioctl(7, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE [pid 3608] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3609] <... ioctl resumed>) = 0 [pid 3609] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3608] <... futex resumed>) = 0 [pid 3609] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3608] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3609] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3608] <... futex resumed>) = 0 [pid 3609] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3608] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3609] <... openat resumed>) = 8 [pid 3609] write(8, "13", 2) = 2 [pid 3609] ioctl(7, NBD_DO_IT [pid 3608] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 52.217020][ T3609] debugfs: out of free dentries, can not create file 'size_bytes' [pid 3608] exit_group(0) = ? [pid 3609] <... ioctl resumed>) = ? [pid 3609] +++ exited with 0 +++ [pid 3608] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3608, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 52.399939][ T3609] block nbd0: shutting down sockets clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3610 attached , child_tidptr=0x5555570955d0) = 3610 [pid 3610] set_robust_list(0x5555570955e0, 24) = 0 [pid 3610] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3610] setpgid(0, 0) = 0 [pid 3610] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3610] write(3, "1000", 4) = 4 [pid 3610] close(3) = 0 [pid 3610] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3610] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe80d0de000 [pid 3610] mprotect(0x7fe80d0df000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3610] clone(child_stack=0x7fe80d0fe3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3611 attached [pid 3611] set_robust_list(0x7fe80d0fe9e0, 24) = 0 [pid 3611] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3610] <... clone resumed>, parent_tid=[3611], tls=0x7fe80d0fe700, child_tidptr=0x7fe80d0fe9d0) = 3611 [pid 3610] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3611] <... futex resumed>) = 0 [pid 3611] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3611] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3611] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3610] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3610] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3611] <... futex resumed>) = 0 [pid 3610] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3611] socketpair(AF_UNIX, SOCK_STREAM, 0, [4, 5]) = 0 [pid 3611] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3611] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3610] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3610] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3611] <... futex resumed>) = 0 [pid 3611] ioctl(3, NBD_SET_SOCK, 4 [pid 3610] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3611] <... ioctl resumed>) = 0 [pid 3611] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3610] <... futex resumed>) = 0 [pid 3611] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3610] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3611] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3610] <... futex resumed>) = 0 [pid 3611] dup(4 [pid 3610] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3611] <... dup resumed>) = 6 [pid 3611] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3610] <... futex resumed>) = 0 [pid 3611] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3610] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3611] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3610] <... futex resumed>) = 0 [pid 3611] ioctl(3, NBD_SET_SOCK, 6 [pid 3610] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3611] <... ioctl resumed>) = 0 [pid 3611] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3610] <... futex resumed>) = 0 [pid 3611] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3610] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3611] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3610] <... futex resumed>) = 0 [pid 3611] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3610] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3611] <... openat resumed>) = 7 [pid 3611] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3610] <... futex resumed>) = 0 [pid 3611] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3610] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3611] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3610] <... futex resumed>) = 0 [pid 3611] ioctl(7, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE [pid 3610] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3611] <... ioctl resumed>) = 0 [pid 3611] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3610] <... futex resumed>) = 0 [pid 3611] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3610] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3611] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3610] <... futex resumed>) = 0 [pid 3611] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3610] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3611] <... openat resumed>) = 8 [pid 3611] write(8, "13", 2) = 2 [pid 3611] ioctl(7, NBD_DO_IT [pid 3610] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 3610] exit_group(0) = ? [pid 3611] <... ioctl resumed>) = ? [pid 3611] +++ exited with 0 +++ [pid 3610] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3610, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- [ 52.730133][ T3611] block nbd0: shutting down sockets clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3612 attached , child_tidptr=0x5555570955d0) = 3612 [pid 3612] set_robust_list(0x5555570955e0, 24) = 0 [pid 3612] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3612] setpgid(0, 0) = 0 [pid 3612] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3612] write(3, "1000", 4) = 4 [pid 3612] close(3) = 0 [pid 3612] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3612] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe80d0de000 [pid 3612] mprotect(0x7fe80d0df000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3612] clone(child_stack=0x7fe80d0fe3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3613 attached , parent_tid=[3613], tls=0x7fe80d0fe700, child_tidptr=0x7fe80d0fe9d0) = 3613 [pid 3613] set_robust_list(0x7fe80d0fe9e0, 24 [pid 3612] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3613] <... set_robust_list resumed>) = 0 [pid 3612] <... futex resumed>) = 0 [pid 3613] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3612] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3613] <... openat resumed>) = 3 [pid 3613] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3612] <... futex resumed>) = 0 [pid 3612] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3613] socketpair(AF_UNIX, SOCK_STREAM, 0, [pid 3612] <... futex resumed>) = 0 [pid 3613] <... socketpair resumed>[4, 5]) = 0 [pid 3612] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3613] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3612] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3613] <... futex resumed>) = 0 [pid 3612] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3613] ioctl(3, NBD_SET_SOCK, 4 [pid 3612] <... futex resumed>) = 0 [pid 3612] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3613] <... ioctl resumed>) = 0 [pid 3613] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3612] <... futex resumed>) = 0 [pid 3613] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3612] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3613] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3612] <... futex resumed>) = 0 [pid 3613] dup(4 [pid 3612] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3613] <... dup resumed>) = 6 [pid 3613] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3612] <... futex resumed>) = 0 [pid 3613] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3612] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3613] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3612] <... futex resumed>) = 0 [pid 3613] ioctl(3, NBD_SET_SOCK, 6 [pid 3612] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3613] <... ioctl resumed>) = 0 [pid 3613] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3612] <... futex resumed>) = 0 [pid 3613] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3612] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3613] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3612] <... futex resumed>) = 0 [pid 3613] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3612] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3613] <... openat resumed>) = 7 [pid 3613] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3612] <... futex resumed>) = 0 [pid 3613] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3612] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3613] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3612] <... futex resumed>) = 0 [pid 3613] ioctl(7, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE [pid 3612] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3613] <... ioctl resumed>) = 0 [pid 3613] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3612] <... futex resumed>) = 0 [pid 3613] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3612] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3613] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3612] <... futex resumed>) = 0 [pid 3613] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3612] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3613] <... openat resumed>) = 8 [pid 3613] write(8, "13", 2) = 2 [pid 3613] ioctl(7, NBD_DO_IT [pid 3612] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 52.868169][ T3613] debugfs: out of free dentries, can not create file 'size_bytes' [pid 3612] exit_group(0) = ? [pid 3613] <... ioctl resumed>) = ? [ 53.048971][ T3613] block nbd0: shutting down sockets [pid 3613] +++ exited with 0 +++ [pid 3612] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3612, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555570955d0) = 3614 ./strace-static-x86_64: Process 3614 attached [pid 3614] set_robust_list(0x5555570955e0, 24) = 0 [pid 3614] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3614] setpgid(0, 0) = 0 [pid 3614] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3614] write(3, "1000", 4) = 4 [pid 3614] close(3) = 0 [pid 3614] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3614] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe80d0de000 [pid 3614] mprotect(0x7fe80d0df000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3614] clone(child_stack=0x7fe80d0fe3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3615], tls=0x7fe80d0fe700, child_tidptr=0x7fe80d0fe9d0) = 3615 [pid 3614] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3614] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3615 attached [pid 3615] set_robust_list(0x7fe80d0fe9e0, 24) = 0 [pid 3615] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3615] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3614] <... futex resumed>) = 0 [pid 3614] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3615] <... futex resumed>) = 1 [pid 3614] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3615] socketpair(AF_UNIX, SOCK_STREAM, 0, [4, 5]) = 0 [pid 3615] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3614] <... futex resumed>) = 0 [pid 3614] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3614] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3615] <... futex resumed>) = 1 [pid 3615] ioctl(3, NBD_SET_SOCK, 4) = 0 [pid 3615] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3614] <... futex resumed>) = 0 [pid 3615] dup(4 [pid 3614] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3615] <... dup resumed>) = 6 [pid 3614] <... futex resumed>) = 0 [pid 3615] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3614] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3615] <... futex resumed>) = 0 [pid 3614] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3615] ioctl(3, NBD_SET_SOCK, 6 [pid 3614] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3614] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3615] <... ioctl resumed>) = 0 [pid 3615] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3614] <... futex resumed>) = 0 [pid 3615] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3614] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3615] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3614] <... futex resumed>) = 0 [pid 3615] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3614] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3615] <... openat resumed>) = 7 [pid 3615] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3614] <... futex resumed>) = 0 [pid 3615] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3614] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3615] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3614] <... futex resumed>) = 0 [pid 3615] ioctl(7, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE [pid 3614] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3615] <... ioctl resumed>) = 0 [pid 3615] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3614] <... futex resumed>) = 0 [pid 3615] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3614] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3615] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3614] <... futex resumed>) = 0 [pid 3614] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3615] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 8 [pid 3615] write(8, "13", 2) = 2 [pid 3615] ioctl(7, NBD_DO_IT [pid 3614] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 3614] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 3614] exit_group(0) = ? [pid 3615] <... ioctl resumed>) = ? [ 53.374866][ T3615] block nbd0: shutting down sockets [pid 3615] +++ exited with 0 +++ [pid 3614] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3614, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3616 attached , child_tidptr=0x5555570955d0) = 3616 [pid 3616] set_robust_list(0x5555570955e0, 24) = 0 [pid 3616] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3616] setpgid(0, 0) = 0 [pid 3616] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3616] write(3, "1000", 4) = 4 [pid 3616] close(3) = 0 [pid 3616] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3616] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe80d0de000 [pid 3616] mprotect(0x7fe80d0df000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3616] clone(child_stack=0x7fe80d0fe3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3617 attached , parent_tid=[3617], tls=0x7fe80d0fe700, child_tidptr=0x7fe80d0fe9d0) = 3617 [pid 3616] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3616] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3617] set_robust_list(0x7fe80d0fe9e0, 24) = 0 [pid 3617] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3617] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3616] <... futex resumed>) = 0 [pid 3617] socketpair(AF_UNIX, SOCK_STREAM, 0, [pid 3616] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3617] <... socketpair resumed>[4, 5]) = 0 [pid 3616] <... futex resumed>) = 0 [pid 3617] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3616] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3617] <... futex resumed>) = 0 [pid 3616] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3617] ioctl(3, NBD_SET_SOCK, 4 [pid 3616] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3616] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3617] <... ioctl resumed>) = 0 [pid 3617] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3616] <... futex resumed>) = 0 [pid 3616] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3617] dup(4 [pid 3616] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3617] <... dup resumed>) = 6 [pid 3617] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3616] <... futex resumed>) = 0 [pid 3617] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3616] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3617] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3616] <... futex resumed>) = 0 [pid 3616] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3617] ioctl(3, NBD_SET_SOCK, 6) = 0 [pid 3617] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3616] <... futex resumed>) = 0 [pid 3617] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 3616] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3617] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3616] <... futex resumed>) = 0 [pid 3617] <... openat resumed>) = 7 [pid 3616] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3617] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3616] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3617] <... futex resumed>) = 0 [pid 3616] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3617] ioctl(7, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE [pid 3616] <... futex resumed>) = 0 [pid 3617] <... ioctl resumed>) = 0 [pid 3616] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3617] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3616] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3617] <... futex resumed>) = 0 [pid 3616] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3617] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3616] <... futex resumed>) = 0 [pid 3616] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3617] <... openat resumed>) = 8 [pid 3617] write(8, "13", 2) = 2 [pid 3617] ioctl(7, NBD_DO_IT [pid 3616] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 3616] exit_group(0) = ? [pid 3617] <... ioctl resumed>) = ? [ 53.696771][ T3617] block nbd0: shutting down sockets [pid 3617] +++ exited with 0 +++ [pid 3616] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3616, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3618 attached , child_tidptr=0x5555570955d0) = 3618 [pid 3618] set_robust_list(0x5555570955e0, 24) = 0 [pid 3618] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3618] setpgid(0, 0) = 0 [pid 3618] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3618] write(3, "1000", 4) = 4 [pid 3618] close(3) = 0 [pid 3618] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3618] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe80d0de000 [pid 3618] mprotect(0x7fe80d0df000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3618] clone(child_stack=0x7fe80d0fe3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3619 attached [pid 3619] set_robust_list(0x7fe80d0fe9e0, 24 [pid 3618] <... clone resumed>, parent_tid=[3619], tls=0x7fe80d0fe700, child_tidptr=0x7fe80d0fe9d0) = 3619 [pid 3619] <... set_robust_list resumed>) = 0 [pid 3618] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3619] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3618] <... futex resumed>) = 0 [pid 3619] <... openat resumed>) = 3 [pid 3618] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3619] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3618] <... futex resumed>) = 0 [pid 3619] socketpair(AF_UNIX, SOCK_STREAM, 0, [pid 3618] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3619] <... socketpair resumed>[4, 5]) = 0 [pid 3618] <... futex resumed>) = 0 [pid 3619] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3618] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3619] <... futex resumed>) = 0 [pid 3618] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3619] ioctl(3, NBD_SET_SOCK, 4 [pid 3618] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3618] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3619] <... ioctl resumed>) = 0 [pid 3619] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3618] <... futex resumed>) = 0 [pid 3619] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3618] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3619] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3618] <... futex resumed>) = 0 [pid 3619] dup(4 [pid 3618] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3619] <... dup resumed>) = 6 [pid 3619] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3618] <... futex resumed>) = 0 [pid 3619] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3618] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3619] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3618] <... futex resumed>) = 0 [pid 3619] ioctl(3, NBD_SET_SOCK, 6 [pid 3618] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3619] <... ioctl resumed>) = 0 [pid 3619] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3618] <... futex resumed>) = 0 [pid 3619] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3618] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3619] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3618] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3619] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 7 [pid 3619] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3618] <... futex resumed>) = 0 [pid 3619] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3618] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3619] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3618] <... futex resumed>) = 0 [pid 3619] ioctl(7, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE [pid 3618] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3619] <... ioctl resumed>) = 0 [pid 3619] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3618] <... futex resumed>) = 0 [pid 3619] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3618] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3619] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3618] <... futex resumed>) = 0 [pid 3619] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3618] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3619] <... openat resumed>) = 8 [pid 3619] write(8, "13", 2) = 2 [pid 3619] ioctl(7, NBD_DO_IT [pid 3618] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 3618] exit_group(0) = ? [pid 3619] <... ioctl resumed>) = ? [ 54.029983][ T3619] block nbd0: shutting down sockets [pid 3619] +++ exited with 0 +++ [pid 3618] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3618, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3620 attached , child_tidptr=0x5555570955d0) = 3620 [pid 3620] set_robust_list(0x5555570955e0, 24) = 0 [pid 3620] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3620] setpgid(0, 0) = 0 [pid 3620] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3620] write(3, "1000", 4) = 4 [pid 3620] close(3) = 0 [pid 3620] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3620] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe80d0de000 [pid 3620] mprotect(0x7fe80d0df000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3620] clone(child_stack=0x7fe80d0fe3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3621], tls=0x7fe80d0fe700, child_tidptr=0x7fe80d0fe9d0) = 3621 ./strace-static-x86_64: Process 3621 attached [pid 3620] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3621] set_robust_list(0x7fe80d0fe9e0, 24) = 0 [pid 3620] <... futex resumed>) = 0 [pid 3620] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3621] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3621] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3620] <... futex resumed>) = 0 [pid 3621] <... futex resumed>) = 1 [pid 3620] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3621] socketpair(AF_UNIX, SOCK_STREAM, 0, [pid 3620] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3621] <... socketpair resumed>[4, 5]) = 0 [pid 3621] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3620] <... futex resumed>) = 0 [pid 3621] <... futex resumed>) = 1 [pid 3621] ioctl(3, NBD_SET_SOCK, 4 [pid 3620] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3620] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3621] <... ioctl resumed>) = 0 [pid 3621] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3620] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 3621] <... futex resumed>) = 0 [pid 3621] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3620] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3621] <... futex resumed>) = 0 [pid 3620] <... futex resumed>) = 1 [pid 3621] dup(4 [pid 3620] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3621] <... dup resumed>) = 6 [pid 3621] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3620] <... futex resumed>) = 0 [pid 3621] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3620] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3621] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3620] <... futex resumed>) = 0 [pid 3621] ioctl(3, NBD_SET_SOCK, 6 [pid 3620] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3621] <... ioctl resumed>) = 0 [pid 3621] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3620] <... futex resumed>) = 0 [pid 3621] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3620] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3621] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3620] <... futex resumed>) = 0 [pid 3621] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3620] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3621] <... openat resumed>) = 7 [pid 3621] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3620] <... futex resumed>) = 0 [pid 3621] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3620] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3621] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3620] <... futex resumed>) = 0 [pid 3621] ioctl(7, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE [pid 3620] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3621] <... ioctl resumed>) = 0 [pid 3621] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3620] <... futex resumed>) = 0 [pid 3621] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3620] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3621] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3620] <... futex resumed>) = 0 [pid 3621] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3620] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3621] <... openat resumed>) = 8 [pid 3621] write(8, "13", 2) = 2 [pid 3621] ioctl(7, NBD_DO_IT [pid 3620] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 3620] exit_group(0 [pid 3621] <... ioctl resumed>) = ? [pid 3620] <... exit_group resumed>) = ? [pid 3621] +++ exited with 0 +++ [ 54.386433][ T3621] block nbd0: shutting down sockets [pid 3620] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3620, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3622 attached , child_tidptr=0x5555570955d0) = 3622 [pid 3622] set_robust_list(0x5555570955e0, 24) = 0 [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] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3622] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe80d0de000 [pid 3622] mprotect(0x7fe80d0df000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3622] clone(child_stack=0x7fe80d0fe3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3623 attached , parent_tid=[3623], tls=0x7fe80d0fe700, child_tidptr=0x7fe80d0fe9d0) = 3623 [pid 3622] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3623] set_robust_list(0x7fe80d0fe9e0, 24) = 0 [pid 3622] <... futex resumed>) = 0 [pid 3622] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3623] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3623] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3622] <... futex resumed>) = 0 [pid 3622] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3623] socketpair(AF_UNIX, SOCK_STREAM, 0, [pid 3622] <... futex resumed>) = 0 [pid 3623] <... socketpair resumed>[4, 5]) = 0 [pid 3623] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3623] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3622] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3622] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3622] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3623] <... futex resumed>) = 0 [pid 3623] ioctl(3, NBD_SET_SOCK, 4) = 0 [pid 3623] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3622] <... futex resumed>) = 0 [pid 3623] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3622] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3623] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3622] <... futex resumed>) = 0 [pid 3623] dup(4 [pid 3622] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3623] <... dup resumed>) = 6 [pid 3623] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3622] <... futex resumed>) = 0 [pid 3623] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3622] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3623] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3622] <... futex resumed>) = 0 [pid 3623] ioctl(3, NBD_SET_SOCK, 6 [pid 3622] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3623] <... ioctl resumed>) = 0 [pid 3623] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3622] <... futex resumed>) = 0 [pid 3623] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3622] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3623] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3622] <... futex resumed>) = 0 [pid 3623] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3622] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3623] <... openat resumed>) = 7 [pid 3623] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3622] <... futex resumed>) = 0 [pid 3623] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3622] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3623] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3622] <... futex resumed>) = 0 [pid 3623] ioctl(7, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE [pid 3622] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3623] <... ioctl resumed>) = 0 [pid 3623] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3622] <... futex resumed>) = 0 [pid 3623] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3622] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3623] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3622] <... futex resumed>) = 0 [pid 3623] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3622] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3623] <... openat resumed>) = 8 [pid 3623] write(8, "13", 2) = 2 [pid 3623] ioctl(7, NBD_DO_IT [pid 3622] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 3622] exit_group(0) = ? [pid 3623] <... ioctl resumed>) = ? [ 54.742387][ T3623] block nbd0: shutting down sockets [pid 3623] +++ exited with 0 +++ [pid 3622] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3622, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555570955d0) = 3624 ./strace-static-x86_64: Process 3624 attached [pid 3624] set_robust_list(0x5555570955e0, 24) = 0 [pid 3624] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3624] setpgid(0, 0) = 0 [pid 3624] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3624] write(3, "1000", 4) = 4 [pid 3624] close(3) = 0 [pid 3624] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3624] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe80d0de000 [pid 3624] mprotect(0x7fe80d0df000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3624] clone(child_stack=0x7fe80d0fe3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3625], tls=0x7fe80d0fe700, child_tidptr=0x7fe80d0fe9d0) = 3625 [pid 3624] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3624] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3625 attached [pid 3625] set_robust_list(0x7fe80d0fe9e0, 24) = 0 [pid 3625] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3625] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3624] <... futex resumed>) = 0 [pid 3624] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3624] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3625] <... futex resumed>) = 1 [pid 3625] socketpair(AF_UNIX, SOCK_STREAM, 0, [4, 5]) = 0 [pid 3625] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3624] <... futex resumed>) = 0 [pid 3624] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3624] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3625] <... futex resumed>) = 1 [pid 3625] ioctl(3, NBD_SET_SOCK, 4) = 0 [pid 3625] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3624] <... futex resumed>) = 0 [pid 3625] dup(4 [pid 3624] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3625] <... dup resumed>) = 6 [pid 3624] <... futex resumed>) = 0 [pid 3625] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3624] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3625] <... futex resumed>) = 0 [pid 3625] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3624] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3624] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3625] <... futex resumed>) = 0 [pid 3624] <... futex resumed>) = 1 [pid 3625] ioctl(3, NBD_SET_SOCK, 6 [pid 3624] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3625] <... ioctl resumed>) = 0 [pid 3625] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3624] <... futex resumed>) = 0 [pid 3625] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3624] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3625] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3624] <... futex resumed>) = 0 [pid 3624] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3625] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 7 [pid 3625] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3624] <... futex resumed>) = 0 [pid 3625] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3624] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3625] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3624] <... futex resumed>) = 0 [pid 3625] ioctl(7, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE [pid 3624] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3625] <... ioctl resumed>) = 0 [pid 3625] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3624] <... futex resumed>) = 0 [pid 3625] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3624] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3625] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3624] <... futex resumed>) = 0 [pid 3624] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3625] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 8 [pid 3625] write(8, "13", 2) = 2 [pid 3625] ioctl(7, NBD_DO_IT [pid 3624] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 3624] exit_group(0) = ? [pid 3625] <... ioctl resumed>) = ? [ 55.086021][ T3625] block nbd0: shutting down sockets [pid 3625] +++ exited with 0 +++ [pid 3624] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3624, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555570955d0) = 3626 ./strace-static-x86_64: Process 3626 attached [pid 3626] set_robust_list(0x5555570955e0, 24) = 0 [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] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3626] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe80d0de000 [pid 3626] mprotect(0x7fe80d0df000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3626] clone(child_stack=0x7fe80d0fe3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3627], tls=0x7fe80d0fe700, child_tidptr=0x7fe80d0fe9d0) = 3627 [pid 3626] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3626] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3627 attached [pid 3627] set_robust_list(0x7fe80d0fe9e0, 24) = 0 [pid 3627] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3627] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3626] <... futex resumed>) = 0 [pid 3626] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3626] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3627] <... futex resumed>) = 1 [pid 3627] socketpair(AF_UNIX, SOCK_STREAM, 0, [4, 5]) = 0 [pid 3627] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3626] <... futex resumed>) = 0 [pid 3626] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3626] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3627] <... futex resumed>) = 1 [pid 3627] ioctl(3, NBD_SET_SOCK, 4) = 0 [pid 3627] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3626] <... futex resumed>) = 0 [pid 3627] dup(4 [pid 3626] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3627] <... dup resumed>) = 6 [pid 3626] <... futex resumed>) = 0 [pid 3627] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3626] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3627] <... futex resumed>) = 0 [pid 3626] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3627] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3626] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3627] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3626] <... futex resumed>) = 0 [pid 3627] ioctl(3, NBD_SET_SOCK, 6 [pid 3626] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3627] <... ioctl resumed>) = 0 [pid 3627] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3626] <... futex resumed>) = 0 [pid 3627] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3626] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3627] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3626] <... futex resumed>) = 0 [pid 3627] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3626] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3627] <... openat resumed>) = 7 [pid 3627] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3626] <... futex resumed>) = 0 [pid 3627] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3626] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3627] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3626] <... futex resumed>) = 0 [pid 3627] ioctl(7, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE [pid 3626] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3627] <... ioctl resumed>) = 0 [pid 3627] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3626] <... futex resumed>) = 0 [pid 3627] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3626] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3627] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3626] <... futex resumed>) = 0 [pid 3627] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3626] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3627] <... openat resumed>) = 8 [pid 3627] write(8, "13", 2) = 2 [pid 3627] ioctl(7, NBD_DO_IT [pid 3626] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 3626] exit_group(0) = ? [pid 3627] <... ioctl resumed>) = ? [ 55.422350][ T3627] block nbd0: shutting down sockets [pid 3627] +++ exited with 0 +++ [pid 3626] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3626, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3628 attached , child_tidptr=0x5555570955d0) = 3628 [pid 3628] set_robust_list(0x5555570955e0, 24) = 0 [pid 3628] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3628] setpgid(0, 0) = 0 [pid 3628] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3628] write(3, "1000", 4) = 4 [pid 3628] close(3) = 0 [pid 3628] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3628] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe80d0de000 [pid 3628] mprotect(0x7fe80d0df000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3628] clone(child_stack=0x7fe80d0fe3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3629 attached , parent_tid=[3629], tls=0x7fe80d0fe700, child_tidptr=0x7fe80d0fe9d0) = 3629 [pid 3629] set_robust_list(0x7fe80d0fe9e0, 24 [pid 3628] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3628] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3629] <... set_robust_list resumed>) = 0 [pid 3629] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3629] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3628] <... futex resumed>) = 0 [pid 3629] socketpair(AF_UNIX, SOCK_STREAM, 0, [pid 3628] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3629] <... socketpair resumed>[4, 5]) = 0 [pid 3628] <... futex resumed>) = 0 [pid 3629] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3628] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3629] <... futex resumed>) = 0 [pid 3628] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3629] ioctl(3, NBD_SET_SOCK, 4 [pid 3628] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3628] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3629] <... ioctl resumed>) = 0 [pid 3629] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3628] <... futex resumed>) = 0 [pid 3629] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3628] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3629] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3628] <... futex resumed>) = 0 [pid 3629] dup(4 [pid 3628] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3629] <... dup resumed>) = 6 [pid 3629] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3628] <... futex resumed>) = 0 [pid 3629] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3628] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3629] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3628] <... futex resumed>) = 0 [pid 3629] ioctl(3, NBD_SET_SOCK, 6 [pid 3628] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3629] <... ioctl resumed>) = 0 [pid 3629] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3628] <... futex resumed>) = 0 [pid 3629] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3628] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3629] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3628] <... futex resumed>) = 0 [pid 3629] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3628] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3629] <... openat resumed>) = 7 [pid 3629] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3628] <... futex resumed>) = 0 [pid 3629] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3628] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3629] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3628] <... futex resumed>) = 0 [pid 3629] ioctl(7, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE [pid 3628] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3629] <... ioctl resumed>) = 0 [pid 3629] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3628] <... futex resumed>) = 0 [pid 3629] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3628] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3629] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3628] <... futex resumed>) = 0 [pid 3629] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3628] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3629] <... openat resumed>) = 8 [pid 3629] write(8, "13", 2) = 2 [pid 3629] ioctl(7, NBD_DO_IT [pid 3628] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 55.576911][ T3629] debugfs: out of free dentries, can not create file 'size_bytes' [pid 3628] exit_group(0) = ? [pid 3629] <... ioctl resumed>) = ? [ 55.756166][ T3629] block nbd0: shutting down sockets [pid 3629] +++ exited with 0 +++ [pid 3628] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3628, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3630 attached , child_tidptr=0x5555570955d0) = 3630 [pid 3630] set_robust_list(0x5555570955e0, 24) = 0 [pid 3630] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3630] setpgid(0, 0) = 0 [pid 3630] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3630] write(3, "1000", 4) = 4 [pid 3630] close(3) = 0 [pid 3630] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3630] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe80d0de000 [pid 3630] mprotect(0x7fe80d0df000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3630] clone(child_stack=0x7fe80d0fe3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3631], tls=0x7fe80d0fe700, child_tidptr=0x7fe80d0fe9d0) = 3631 ./strace-static-x86_64: Process 3631 attached [pid 3630] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3630] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3631] set_robust_list(0x7fe80d0fe9e0, 24) = 0 [pid 3631] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3631] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3630] <... futex resumed>) = 0 [pid 3631] <... futex resumed>) = 1 [pid 3630] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3631] socketpair(AF_UNIX, SOCK_STREAM, 0, [pid 3630] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3631] <... socketpair resumed>[4, 5]) = 0 [pid 3631] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3630] <... futex resumed>) = 0 [pid 3630] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3631] ioctl(3, NBD_SET_SOCK, 4 [pid 3630] <... futex resumed>) = 0 [pid 3630] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3631] <... ioctl resumed>) = 0 [pid 3631] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3630] <... futex resumed>) = 0 [pid 3631] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3630] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3631] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3630] <... futex resumed>) = 0 [pid 3631] dup(4 [pid 3630] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3631] <... dup resumed>) = 6 [pid 3631] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3630] <... futex resumed>) = 0 [pid 3631] ioctl(3, NBD_SET_SOCK, 6 [pid 3630] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3630] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3631] <... ioctl resumed>) = 0 [pid 3631] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3630] <... futex resumed>) = 0 [pid 3631] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 3630] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3631] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 7 [pid 3630] <... futex resumed>) = 0 [pid 3631] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3630] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3631] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3630] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3630] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3631] <... futex resumed>) = 0 [pid 3630] <... futex resumed>) = 1 [pid 3631] ioctl(7, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE [pid 3630] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3631] <... ioctl resumed>) = 0 [pid 3631] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3630] <... futex resumed>) = 0 [pid 3631] futex(0x7fe80d1d54e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3630] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3631] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3630] <... futex resumed>) = 0 [pid 3631] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3630] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3631] <... openat resumed>) = 8 [pid 3631] write(8, "13", 2) = 2 [pid 3631] ioctl(7, NBD_DO_IT [pid 3630] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 55.905502][ T3631] debugfs: out of free dentries, can not create file 'size_bytes' [pid 3630] exit_group(0) = ? [pid 3631] <... ioctl resumed>) = ? [ 56.088348][ T3631] block nbd0: shutting down sockets [pid 3631] +++ exited with 0 +++ [pid 3630] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3630, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3632 attached , child_tidptr=0x5555570955d0) = 3632 [pid 3632] set_robust_list(0x5555570955e0, 24) = 0 [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 3632] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3632] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe80d0de000 [pid 3632] mprotect(0x7fe80d0df000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3632] clone(child_stack=0x7fe80d0fe3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3633 attached , parent_tid=[3633], tls=0x7fe80d0fe700, child_tidptr=0x7fe80d0fe9d0) = 3633 [pid 3632] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3633] set_robust_list(0x7fe80d0fe9e0, 24 [pid 3632] futex(0x7fe80d1d54ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3633] <... set_robust_list resumed>) = 0 [pid 3633] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3633] futex(0x7fe80d1d54ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3632] <... futex resumed>) = 0 [pid 3633] socketpair(AF_UNIX, SOCK_STREAM, 0, [pid 3632] futex(0x7fe80d1d54e8, FUTEX_WAKE_PRIVATE, 1000000