./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2571252214
<...>
Warning: Permanently added '10.128.1.32' (ECDSA) to the list of known hosts.
execve("./syz-executor2571252214", ["./syz-executor2571252214"], 0x7ffc917c6d40 /* 10 vars */) = 0
brk(NULL) = 0x55555650c000
brk(0x55555650cc40) = 0x55555650cc40
arch_prctl(ARCH_SET_FS, 0x55555650c300) = 0
uname({sysname="Linux", nodename="syzkaller", ...}) = 0
readlink("/proc/self/exe", "/root/syz-executor2571252214", 4096) = 28
brk(0x55555652dc40) = 0x55555652dc40
brk(0x55555652e000) = 0x55555652e000
mprotect(0x7f42c7823000, 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./strace-static-x86_64: Process 3609 attached
, child_tidptr=0x55555650c5d0) = 3609
[pid 3609] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3609] setpgid(0, 0) = 0
[pid 3609] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3609] write(3, "1000", 4) = 4
[pid 3609] close(3) = 0
[pid 3609] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3609] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3609] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3609] write(4, "37", 2) = 2
[pid 3609] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3609] exit_group(0) = ?
[pid 3609] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3609, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3612
./strace-static-x86_64: Process 3612 attached
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3612] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3612] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3612] write(4, "37", 2) = 2
[pid 3612] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3612] exit_group(0) = ?
[pid 3612] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3612, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3613
./strace-static-x86_64: Process 3613 attached
[pid 3613] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3613] setpgid(0, 0) = 0
[pid 3613] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3613] write(3, "1000", 4) = 4
[pid 3613] close(3) = 0
[pid 3613] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3613] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3613] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3613] write(4, "37", 2) = 2
[pid 3613] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3613] exit_group(0) = ?
[pid 3613] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3613, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3614 attached
, child_tidptr=0x55555650c5d0) = 3614
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3614] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3614] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3614] write(4, "37", 2) = 2
[pid 3614] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3614] exit_group(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=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3615
./strace-static-x86_64: Process 3615 attached
[pid 3615] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3615] setpgid(0, 0) = 0
[pid 3615] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3615] write(3, "1000", 4) = 4
[pid 3615] close(3) = 0
[pid 3615] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3615] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3615] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3615] write(4, "37", 2) = 2
[pid 3615] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3615] exit_group(0) = ?
[pid 3615] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3615, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3616
./strace-static-x86_64: Process 3616 attached
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3616] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3616] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
syzkaller login: [ 35.351813][ T3613] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3616] write(4, "37", 2) = 2
[pid 3616] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3616] exit_group(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=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3617
./strace-static-x86_64: Process 3617 attached
[pid 3617] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3617] setpgid(0, 0) = 0
[pid 3617] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3617] write(3, "1000", 4) = 4
[pid 3617] close(3) = 0
[pid 3617] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3617] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3617] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3617] write(4, "37", 2) = 2
[pid 3617] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3617] exit_group(0) = ?
[pid 3617] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3617, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3619
./strace-static-x86_64: Process 3619 attached
[pid 3619] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3619] setpgid(0, 0) = 0
[pid 3619] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3619] write(3, "1000", 4) = 4
[pid 3619] close(3) = 0
[pid 3619] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3619] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3619] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3619] write(4, "37", 2) = 2
[pid 3619] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3619] exit_group(0) = ?
[pid 3619] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3619, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3620
./strace-static-x86_64: Process 3620 attached
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3620] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3620] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3620] write(4, "37", 2) = 2
[pid 3620] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3620] exit_group(0) = ?
[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=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3621
./strace-static-x86_64: Process 3621 attached
[pid 3621] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3621] setpgid(0, 0) = 0
[ 35.482709][ T3617]
[ 35.482716][ T3617] ======================================================
[ 35.482721][ T3617] WARNING: possible circular locking dependency detected
[ 35.482726][ T3617] 5.19.0-rc3-syzkaller-00027-g78ca55889a54 #0 Not tainted
[ 35.482735][ T3617] ------------------------------------------------------
[ 35.482740][ T3617] syz-executor257/3617 is trying to acquire lock:
[ 35.482748][ T3617] ffff88814608b0a8 ((&sq->pending_timer)){+.-.}-{0:0}, at: del_timer_sync+0x33/0x1b0
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3621] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3621] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3621] write(4, "37", 2) = 2
[pid 3621] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3621] exit_group(0) = ?
[pid 3621] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3621, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
[ 35.482791][ T3617]
[ 35.482791][ T3617] but task is already holding lock:
[ 35.482795][ T3617] ffffffff910dafb0 (&blkcg->lock){....}-{2:2}, at: blkcg_deactivate_policy+0x1e7/0x4e0
[ 35.482858][ T3617]
[ 35.482858][ T3617] which lock already depends on the new lock.
[ 35.482858][ T3617]
[ 35.482863][ T3617]
[ 35.482863][ T3617] the existing dependency chain (in reverse order) is:
[ 35.482867][ T3617]
[ 35.482867][ T3617] -> #2 (&blkcg->lock){....}-{2:2}:
[ 35.482887][ T3617] _raw_spin_lock+0x2a/0x40
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3622] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3622] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3622] write(4, "37", 2) = 2
[pid 3622] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3622] exit_group(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=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3623
./strace-static-x86_64: Process 3623 attached
[pid 3623] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3623] setpgid(0, 0) = 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 3623] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3623] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3623] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3623] write(4, "37", 2) = 2
[pid 3623] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3623] exit_group(0) = ?
[pid 3623] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3623, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3624
./strace-static-x86_64: Process 3624 attached
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 35.482906][ T3617] blkg_create+0x45e/0x1000
[ 35.482921][ T3617] blkcg_init_queue+0xb2/0x610
[ 35.482938][ T3617] __alloc_disk_node+0x260/0x610
[ 35.482956][ T3617] __blk_alloc_disk+0x35/0x70
[ 35.482973][ T3617] brd_alloc.part.0+0x27f/0x7a0
[ 35.482991][ T3617] brd_init+0x1b8/0x24b
[ 35.483007][ T3617] do_one_initcall+0x103/0x650
[ 35.483026][ T3617] kernel_init_freeable+0x6b1/0x73a
[ 35.483042][ T3617] kernel_init+0x1a/0x1d0
[pid 3624] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3624] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3624] write(4, "37", 2) = 2
[pid 3624] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3624] exit_group(0) = ?
[pid 3624] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3624, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3625
./strace-static-x86_64: Process 3625 attached
[pid 3625] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3625] setpgid(0, 0) = 0
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 35.483058][ T3617] ret_from_fork+0x1f/0x30
[ 35.483075][ T3617]
[ 35.483075][ T3617] -> #1 (&q->queue_lock){..-.}-{2:2}:
[ 35.483096][ T3617] _raw_spin_lock_irq+0x32/0x50
[ 35.483114][ T3617] throtl_pending_timer_fn+0xf7/0x1690
[ 35.483132][ T3617] call_timer_fn+0x1a5/0x6b0
[ 35.483147][ T3617] __run_timers.part.0+0x679/0xa80
[ 35.483164][ T3617] run_timer_softirq+0xb3/0x1d0
[ 35.483180][ T3617] __do_softirq+0x29b/0x9c2
[pid 3625] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3625] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3625] write(4, "37", 2) = 2
[pid 3625] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3625] exit_group(0) = ?
[pid 3625] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3625, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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 3627] write(3, "1000", 4) = 4
[pid 3627] close(3) = 0
[pid 3627] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 35.483199][ T3617] __irq_exit_rcu+0x123/0x180
[ 35.483215][ T3617] irq_exit_rcu+0x5/0x20
[ 35.483230][ T3617] sysvec_apic_timer_interrupt+0x93/0xc0
[ 35.483258][ T3617] asm_sysvec_apic_timer_interrupt+0x1b/0x20
[ 35.483278][ T3617] __sanitizer_cov_trace_pc+0x7/0x60
[ 35.483295][ T3617] __page_set_anon_rmap+0x9f/0x940
[ 35.483315][ T3617] __handle_mm_fault+0x309e/0x3f50
[ 35.483334][ T3617] handle_mm_fault+0x1c8/0x790
[ 35.483353][ T3617] do_user_addr_fault+0x489/0x11c0
[pid 3627] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[ 35.483372][ T3617] exc_page_fault+0x9e/0x180
[ 35.483387][ T3617] asm_exc_page_fault+0x27/0x30
[ 35.483405][ T3617]
[ 35.483405][ T3617] -> #0 ((&sq->pending_timer)){+.-.}-{0:0}:
[ 35.483431][ T3617] __lock_acquire+0x2abe/0x5660
[ 35.483451][ T3617] lock_acquire+0x1ab/0x570
[ 35.483465][ T3617] del_timer_sync+0x5b/0x1b0
[ 35.483481][ T3617] throtl_pd_free+0x15/0x40
[ 35.483497][ T3617] blkcg_deactivate_policy+0x2d2/0x4e0
[ 35.483514][ T3617] blk_throtl_exit+0x8a/0x1a0
[pid 3627] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3627] write(4, "37", 2) = 2
[pid 3627] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3627] exit_group(0) = ?
[pid 3627] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3627, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3628
./strace-static-x86_64: Process 3628 attached
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 35.483532][ T3617] blkcg_init_queue+0x19b/0x610
[ 35.483549][ T3617] __alloc_disk_node+0x260/0x610
[ 35.483567][ T3617] __blk_mq_alloc_disk+0x133/0x1c0
[ 35.483582][ T3617] loop_add+0x3e2/0xaf0
[ 35.483598][ T3617] loop_control_ioctl+0x133/0x540
[ 35.483615][ T3617] __x64_sys_ioctl+0x193/0x200
[ 35.483635][ T3617] do_syscall_64+0x35/0xb0
[ 35.483654][ T3617] entry_SYSCALL_64_after_hwframe+0x46/0xb0
[ 35.483673][ T3617]
[ 35.483673][ T3617] other info that might help us debug this:
[ 35.483673][ T3617]
[ 35.483678][ T3617] Chain exists of:
[ 35.483678][ T3617] (&sq->pending_timer) --> &q->queue_lock --> &blkcg->lock
[ 35.483678][ T3617]
[ 35.483702][ T3617] Possible unsafe locking scenario:
[ 35.483702][ T3617]
[ 35.483706][ T3617] CPU0 CPU1
[ 35.483709][ T3617] ---- ----
[ 35.483713][ T3617] lock(&blkcg->lock);
[ 35.483721][ T3617] lock(&q->queue_lock);
[ 35.483731][ T3617] lock(&blkcg->lock);
[ 35.483741][ T3617] lock((&sq->pending_timer));
[ 35.483749][ T3617]
[ 35.483749][ T3617] *** DEADLOCK ***
[ 35.483749][ T3617]
[ 35.483752][ T3617] 2 locks held by syz-executor257/3617:
[ 35.483762][ T3617] #0: ffff8880207a80d0 (&q->queue_lock){..-.}-{2:2}, at: blkcg_deactivate_policy+0xfe/0x4e0
[ 35.483804][ T3617] #1: ffffffff910dafb0 (&blkcg->lock){....}-{2:2}, at: blkcg_deactivate_policy+0x1e7/0x4e0
[ 35.483845][ T3617]
[ 35.483845][ T3617] stack backtrace:
[pid 3628] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3628] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3628] write(4, "37", 2) = 2
[pid 3628] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3628] exit_group(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=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3629
./strace-static-x86_64: Process 3629 attached
[pid 3629] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3629] setpgid(0, 0) = 0
[pid 3629] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3629] write(3, "1000", 4) = 4
[pid 3629] close(3) = 0
[pid 3629] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3629] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3629] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3629] write(4, "37", 2) = 2
[pid 3629] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3629] exit_group(0) = ?
[pid 3629] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3629, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3630
./strace-static-x86_64: Process 3630 attached
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 35.483849][ T3617] CPU: 1 PID: 3617 Comm: syz-executor257 Not tainted 5.19.0-rc3-syzkaller-00027-g78ca55889a54 #0
[ 35.483868][ T3617] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 35.483878][ T3617] Call Trace:
[ 35.483882][ T3617]
[ 35.483887][ T3617] dump_stack_lvl+0xcd/0x134
[ 35.483908][ T3617] check_noncircular+0x25f/0x2e0
[ 35.483928][ T3617] ? register_lock_class+0xbe/0x1130
[ 35.483944][ T3617] ? print_circular_bug+0x1e0/0x1e0
[ 35.483967][ T3617] ? __lock_acquire+0x163e/0x5660
[ 35.483993][ T3617] ? find_held_lock+0x2d/0x110
[ 35.484015][ T3617] __lock_acquire+0x2abe/0x5660
[ 35.484042][ T3617] ? lockdep_hardirqs_on_prepare+0x400/0x400
[ 35.484071][ T3617] lock_acquire+0x1ab/0x570
[ 35.484087][ T3617] ? del_timer_sync+0x33/0x1b0
[ 35.484109][ T3617] ? lock_release+0x780/0x780
[ 35.484131][ T3617] ? lock_release+0x780/0x780
[ 35.484153][ T3617] ? blk_mq_freeze_queue_wait+0xab/0x160
[ 35.484175][ T3617] ? blk_mq_queue_inflight+0xa0/0xa0
[ 35.484197][ T3617] ? do_raw_spin_lock+0x120/0x2a0
[ 35.484217][ T3617] del_timer_sync+0x5b/0x1b0
[ 35.484234][ T3617] ? del_timer_sync+0x33/0x1b0
[ 35.484259][ T3617] throtl_pd_free+0x15/0x40
[ 35.484277][ T3617] blkcg_deactivate_policy+0x2d2/0x4e0
[ 35.484296][ T3617] ? throtl_upgrade_state+0xee0/0xee0
[ 35.484319][ T3617] blk_throtl_exit+0x8a/0x1a0
[ 35.484339][ T3617] blkcg_init_queue+0x19b/0x610
[ 35.484359][ T3617] __alloc_disk_node+0x260/0x610
[ 35.484380][ T3617] __blk_mq_alloc_disk+0x133/0x1c0
[ 35.484399][ T3617] loop_add+0x3e2/0xaf0
[pid 3630] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3630] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3630] write(4, "37", 2) = 2
[pid 3630] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3630] exit_group(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=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3631
./strace-static-x86_64: Process 3631 attached
[pid 3631] prctl(PR_SET_PDEATHSIG, SIGKILL) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3631] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3631] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3631] write(4, "37", 2) = 2
[pid 3631] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3631] exit_group(0) = ?
[pid 3631] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3631, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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 3632] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 35.484416][ T3617] ? ptrace_notify+0xfa/0x140
[ 35.484434][ T3617] loop_control_ioctl+0x133/0x540
[ 35.484453][ T3617] ? loop_probe+0x80/0x80
[ 35.484469][ T3617] ? _raw_spin_unlock_irq+0x1f/0x40
[ 35.484490][ T3617] ? bpf_lsm_file_ioctl+0x5/0x10
[ 35.484511][ T3617] ? loop_probe+0x80/0x80
[ 35.484529][ T3617] __x64_sys_ioctl+0x193/0x200
[ 35.484550][ T3617] do_syscall_64+0x35/0xb0
[ 35.484571][ T3617] entry_SYSCALL_64_after_hwframe+0x46/0xb0
[ 35.484592][ T3617] RIP: 0033:0x7f42c77b6069
[ 35.484606][ T3617] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 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
[ 35.484623][ T3617] RSP: 002b:00007ffddc18bd48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 35.484641][ T3617] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f42c77b6069
[ 35.484653][ T3617] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003
[ 35.484664][ T3617] RBP: 00007ffddc18bd60 R08: 0000000000000002 R09: 0000000000000001
[ 35.484675][ T3617] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
[ 35.484685][ T3617] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000
[ 35.484702][ T3617]
[ 35.523149][ T3620] debugfs: Directory 'loop0' with parent 'block' already present!
[ 35.650305][ T3624] debugfs: Directory 'loop0' with parent 'block' already present!
[ 35.727059][ T3625] debugfs: Directory 'loop0' with parent 'block' already present!
[ 35.962474][ T3629] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3632] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3632] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3632] write(4, "37", 2) = 2
[pid 3632] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3632] exit_group(0) = ?
[pid 3632] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3632, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3633 attached
, child_tidptr=0x55555650c5d0) = 3633
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3633] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3633] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3633] write(4, "37", 2) = 2
[pid 3633] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3633] exit_group(0) = ?
[pid 3633] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3633, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 36.126050][ T3631] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3634] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3634] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3634] write(4, "37", 2) = 2
[pid 3634] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3634] exit_group(0) = ?
[pid 3634] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3634, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3635 attached
, child_tidptr=0x55555650c5d0) = 3635
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3635] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3635] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3635] write(4, "37", 2) = 2
[pid 3635] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3635] exit_group(0) = ?
[pid 3635] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3635, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3636 attached
, child_tidptr=0x55555650c5d0) = 3636
[pid 3636] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3636] setpgid(0, 0) = 0
[pid 3636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3636] write(3, "1000", 4) = 4
[pid 3636] close(3) = 0
[pid 3636] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3636] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3636] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3636] write(4, "37", 2) = 2
[pid 3636] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3636] exit_group(0) = ?
[pid 3636] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3636, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3637
./strace-static-x86_64: Process 3637 attached
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3637] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3637] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3637] write(4, "37", 2) = 2
[pid 3637] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3637] exit_group(0) = ?
[pid 3637] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3637, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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
[pid 3638] close(3) = 0
[pid 3638] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 36.332076][ T3636] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3638] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3638] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3638] write(4, "37", 2) = 2
[pid 3638] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3638] exit_group(0) = ?
[pid 3638] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3638, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3639
./strace-static-x86_64: Process 3639 attached
[pid 3639] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3639] setpgid(0, 0) = 0
[pid 3639] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3639] write(3, "1000", 4) = 4
[pid 3639] close(3) = 0
[pid 3639] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3639] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3639] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3639] write(4, "37", 2) = 2
[pid 3639] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3639] exit_group(0) = ?
[pid 3639] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3639, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 36.379021][ T3637] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3640] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3640] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3640] write(4, "37", 2) = 2
[pid 3640] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3640] exit_group(0) = ?
[pid 3640] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3640, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3641] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3641] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3641] write(4, "37", 2) = 2
[pid 3641] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3641] exit_group(0) = ?
[pid 3641] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3641, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3642] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3642] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3642] write(4, "37", 2) = 2
[pid 3642] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3642] exit_group(0) = ?
[pid 3642] +++ exited with 0 +++
[ 36.479953][ T3640] debugfs: Directory 'loop0' with parent 'block' already present!
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3642, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3643] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3643] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3643] write(4, "37", 2) = 2
[pid 3643] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3643] exit_group(0) = ?
[pid 3643] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3643, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3644
./strace-static-x86_64: Process 3644 attached
[pid 3644] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3644] setpgid(0, 0) = 0
[pid 3644] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3644] write(3, "1000", 4) = 4
[pid 3644] close(3) = 0
[pid 3644] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3644] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3644] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3644] write(4, "37", 2) = 2
[pid 3644] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3644] exit_group(0) = ?
[pid 3644] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3644, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3645
./strace-static-x86_64: Process 3645 attached
[pid 3645] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3645] setpgid(0, 0) = 0
[pid 3645] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3645] write(3, "1000", 4) = 4
[pid 3645] close(3) = 0
[pid 3645] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3645] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3645] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3645] write(4, "37", 2) = 2
[pid 3645] ioctl(3, LOOP_CTL_ADD, 0) = 0
[ 36.535449][ T3642] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3645] exit_group(0) = ?
[pid 3645] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3645, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3646] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3646] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3646] write(4, "37", 2) = 2
[pid 3646] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3646] exit_group(0) = ?
[pid 3646] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3646, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3647 attached
, child_tidptr=0x55555650c5d0) = 3647
[pid 3647] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3647] setpgid(0, 0) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3647] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3647] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3647] write(4, "37", 2) = 2
[pid 3647] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3647] exit_group(0) = ?
[pid 3647] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3647, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3648] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3648] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3648] write(4, "37", 2) = 2
[ 36.620732][ T3646] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3648] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3648] exit_group(0) = ?
[pid 3648] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3648, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3649
./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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3649] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3649] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3649] write(4, "37", 2) = 2
[pid 3649] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3649] exit_group(0) = ?
[pid 3649] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3649, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3650
./strace-static-x86_64: Process 3650 attached
[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
[pid 3650] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3650] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3650] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3650] write(4, "37", 2) = 2
[pid 3650] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3650] exit_group(0) = ?
[pid 3650] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3650, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3651 attached
, child_tidptr=0x55555650c5d0) = 3651
[pid 3651] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3651] setpgid(0, 0) = 0
[pid 3651] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3651] write(3, "1000", 4) = 4
[pid 3651] close(3) = 0
[pid 3651] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 36.686924][ T3648] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3651] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3651] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3651] write(4, "37", 2) = 2
[pid 3651] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3651] exit_group(0) = ?
[pid 3651] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3651, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3652
./strace-static-x86_64: Process 3652 attached
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3652] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3652] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3652] write(4, "37", 2) = 2
[pid 3652] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3652] exit_group(0) = ?
[pid 3652] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3652, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3653
./strace-static-x86_64: Process 3653 attached
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 36.789925][ T3651] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3653] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3653] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3653] write(4, "37", 2) = 2
[pid 3653] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3653] exit_group(0) = ?
[pid 3653] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3653, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3654 attached
, child_tidptr=0x55555650c5d0) = 3654
[pid 3654] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3654] setpgid(0, 0) = 0
[pid 3654] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3654] write(3, "1000", 4) = 4
[pid 3654] close(3) = 0
[pid 3654] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 36.839799][ T3652] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3654] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3654] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3654] write(4, "37", 2) = 2
[pid 3654] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3654] exit_group(0) = ?
[pid 3654] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3654, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3655
./strace-static-x86_64: Process 3655 attached
[pid 3655] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3655] setpgid(0, 0) = 0
[pid 3655] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3655] write(3, "1000", 4) = 4
[pid 3655] close(3) = 0
[pid 3655] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3655] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3655] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3655] write(4, "37", 2) = 2
[pid 3655] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3655] exit_group(0) = ?
[pid 3655] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3655, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3656
./strace-static-x86_64: Process 3656 attached
[pid 3656] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3656] setpgid(0, 0) = 0
[pid 3656] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3656] write(3, "1000", 4) = 4
[pid 3656] close(3) = 0
[pid 3656] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3656] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3656] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3656] write(4, "37", 2) = 2
[ 36.959056][ T3654] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3656] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3656] exit_group(0) = ?
[pid 3656] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3656, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3657] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3657] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3657] write(4, "37", 2) = 2
[pid 3657] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3657] exit_group(0) = ?
[pid 3657] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3657, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3658 attached
[pid 3658] prctl(PR_SET_PDEATHSIG, SIGKILL
[pid 3608] <... clone resumed>, child_tidptr=0x55555650c5d0) = 3658
[pid 3658] <... prctl resumed>) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3658] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3658] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3658] write(4, "37", 2) = 2
[pid 3658] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3658] exit_group(0) = ?
[pid 3658] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3658, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3659 attached
, child_tidptr=0x55555650c5d0) = 3659
[pid 3659] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3659] setpgid(0, 0) = 0
[ 37.059718][ T3657] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3659] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3659] write(3, "1000", 4) = 4
[pid 3659] close(3) = 0
[pid 3659] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3659] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3659] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3659] write(4, "37", 2) = 2
[pid 3659] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3659] exit_group(0) = ?
[pid 3659] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3659, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3660] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3660] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3660] write(4, "37", 2) = 2
[pid 3660] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3660] exit_group(0) = ?
[ 37.099812][ T3658] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3660] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3660, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3661
./strace-static-x86_64: Process 3661 attached
[pid 3661] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3661] setpgid(0, 0) = 0
[pid 3661] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3661] write(3, "1000", 4) = 4
[pid 3661] close(3) = 0
[pid 3661] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3661] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3661] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3661] write(4, "37", 2) = 2
[pid 3661] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3661] exit_group(0) = ?
[pid 3661] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3661, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3662
./strace-static-x86_64: Process 3662 attached
[pid 3662] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3662] setpgid(0, 0) = 0
[pid 3662] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3662] write(3, "1000", 4) = 4
[pid 3662] close(3) = 0
[pid 3662] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3662] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3662] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3662] write(4, "37", 2) = 2
[pid 3662] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3662] exit_group(0) = ?
[pid 3662] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3662, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3663 attached
, child_tidptr=0x55555650c5d0) = 3663
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3663] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3663] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3663] write(4, "37", 2) = 2
[pid 3663] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3663] exit_group(0) = ?
[pid 3663] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3663, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3664
./strace-static-x86_64: Process 3664 attached
[pid 3664] prctl(PR_SET_PDEATHSIG, SIGKILL) = 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) = 4
[pid 3664] close(3) = 0
[pid 3664] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3664] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3664] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3664] write(4, "37", 2) = 2
[pid 3664] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3664] exit_group(0) = ?
[pid 3664] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3664, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3665 attached
, child_tidptr=0x55555650c5d0) = 3665
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 37.234469][ T3664] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3665] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3665] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3665] write(4, "37", 2) = 2
[pid 3665] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3665] exit_group(0) = ?
[pid 3665] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3665, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3666
./strace-static-x86_64: Process 3666 attached
[pid 3666] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3666] setpgid(0, 0) = 0
[pid 3666] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3666] write(3, "1000", 4) = 4
[pid 3666] close(3) = 0
[pid 3666] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3666] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3666] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3666] write(4, "37", 2) = 2
[pid 3666] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3666] exit_group(0) = ?
[pid 3666] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3666, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3667] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3667] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3667] write(4, "37", 2) = 2
[pid 3667] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3667] exit_group(0) = ?
[pid 3667] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3667, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3668] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3668] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3668] write(4, "37", 2) = 2
[pid 3668] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3668] exit_group(0) = ?
[pid 3668] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3668, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3669 attached
, child_tidptr=0x55555650c5d0) = 3669
[pid 3669] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[ 37.348925][ T3667] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3669] setpgid(0, 0) = 0
[pid 3669] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3669] write(3, "1000", 4) = 4
[pid 3669] close(3) = 0
[pid 3669] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3669] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3669] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3669] write(4, "37", 2) = 2
[pid 3669] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3669] exit_group(0) = ?
[pid 3669] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3669, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3670] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3670] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3670] write(4, "37", 2) = 2
[pid 3670] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3670] exit_group(0) = ?
[pid 3670] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3670, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3671
./strace-static-x86_64: Process 3671 attached
[pid 3671] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3671] setpgid(0, 0) = 0
[pid 3671] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3671] write(3, "1000", 4) = 4
[pid 3671] close(3) = 0
[pid 3671] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 37.459679][ T3669] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3671] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3671] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3671] write(4, "37", 2) = 2
[pid 3671] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3671] exit_group(0) = ?
[pid 3671] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3671, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3672
./strace-static-x86_64: Process 3672 attached
[pid 3672] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3672] setpgid(0, 0) = 0
[pid 3672] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3672] write(3, "1000", 4) = 4
[pid 3672] close(3) = 0
[pid 3672] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 37.509871][ T3670] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3672] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3672] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3672] write(4, "37", 2) = 2
[pid 3672] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3672] exit_group(0) = ?
[pid 3672] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3672, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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) = 4
[pid 3673] close(3) = 0
[pid 3673] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3673] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3673] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3673] write(4, "37", 2) = 2
[pid 3673] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3673] exit_group(0) = ?
[pid 3673] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3673, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3674
./strace-static-x86_64: Process 3674 attached
[pid 3674] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3674] setpgid(0, 0) = 0
[pid 3674] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3674] write(3, "1000", 4) = 4
[pid 3674] close(3) = 0
[pid 3674] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3674] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3674] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3674] write(4, "37", 2) = 2
[pid 3674] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3674] exit_group(0) = ?
[pid 3674] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3674, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3675
./strace-static-x86_64: Process 3675 attached
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 37.618262][ T3673] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3675] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3675] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3675] write(4, "37", 2) = 2
[pid 3675] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3675] exit_group(0) = ?
[pid 3675] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3675, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3676 attached
, child_tidptr=0x55555650c5d0) = 3676
[pid 3676] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3676] setpgid(0, 0) = 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
[ 37.670278][ T3674] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3676] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3676] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3676] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3676] write(4, "37", 2) = 2
[pid 3676] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3676] exit_group(0) = ?
[pid 3676] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3676, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3677
./strace-static-x86_64: Process 3677 attached
[pid 3677] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3677] setpgid(0, 0) = 0
[pid 3677] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3677] write(3, "1000", 4) = 4
[pid 3677] close(3) = 0
[pid 3677] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3677] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3677] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3677] write(4, "37", 2) = 2
[pid 3677] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3677] exit_group(0) = ?
[pid 3677] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3677, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3678
./strace-static-x86_64: Process 3678 attached
[pid 3678] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3678] setpgid(0, 0) = 0
[pid 3678] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3678] write(3, "1000", 4) = 4
[pid 3678] close(3) = 0
[pid 3678] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3678] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3678] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3678] write(4, "37", 2) = 2
[pid 3678] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3678] exit_group(0) = ?
[pid 3678] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3678, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3679
./strace-static-x86_64: Process 3679 attached
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 37.784383][ T3677] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3679] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3679] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3679] write(4, "37", 2) = 2
[pid 3679] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3679] exit_group(0) = ?
[pid 3679] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3679, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3680
./strace-static-x86_64: Process 3680 attached
[pid 3680] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3680] setpgid(0, 0) = 0
[pid 3680] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3680] write(3, "1000", 4) = 4
[pid 3680] close(3) = 0
[pid 3680] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 37.839687][ T3678] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3680] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3680] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3680] write(4, "37", 2) = 2
[pid 3680] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3680] exit_group(0) = ?
[pid 3680] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3680, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3681
./strace-static-x86_64: Process 3681 attached
[pid 3681] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3681] setpgid(0, 0) = 0
[pid 3681] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3681] write(3, "1000", 4) = 4
[pid 3681] close(3) = 0
[pid 3681] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3681] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3681] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3681] write(4, "37", 2) = 2
[pid 3681] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3681] exit_group(0) = ?
[pid 3681] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3681, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3682
./strace-static-x86_64: Process 3682 attached
[pid 3682] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3682] setpgid(0, 0) = 0
[pid 3682] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3682] write(3, "1000", 4) = 4
[pid 3682] close(3) = 0
[pid 3682] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3682] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3682] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3682] write(4, "37", 2) = 2
[pid 3682] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3682] exit_group(0) = ?
[pid 3682] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3682, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3683
./strace-static-x86_64: Process 3683 attached
[pid 3683] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3683] setpgid(0, 0) = 0
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3683] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3683] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3683] write(4, "37", 2) = 2
[pid 3683] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3683] exit_group(0) = ?
[pid 3683] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3683, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3684 attached
, child_tidptr=0x55555650c5d0) = 3684
[pid 3684] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3684] setpgid(0, 0) = 0
[pid 3684] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3684] write(3, "1000", 4) = 4
[pid 3684] close(3) = 0
[pid 3684] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3684] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3684] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3684] write(4, "37", 2) = 2
[ 37.955936][ T3682] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3684] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3684] exit_group(0) = ?
[pid 3684] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3684, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3685] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3685] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3685] write(4, "37", 2) = 2
[pid 3685] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3685] exit_group(0) = ?
[pid 3685] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3685, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3686] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3686] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3686] write(4, "37", 2) = 2
[pid 3686] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3686] exit_group(0) = ?
[pid 3686] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3686, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3687
./strace-static-x86_64: Process 3687 attached
[pid 3687] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3687] setpgid(0, 0) = 0
[pid 3687] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3687] write(3, "1000", 4) = 4
[pid 3687] close(3) = 0
[pid 3687] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3687] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3687] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3687] write(4, "37", 2) = 2
[pid 3687] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3687] exit_group(0) = ?
[pid 3687] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3687, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3688
./strace-static-x86_64: Process 3688 attached
[pid 3688] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3688] setpgid(0, 0) = 0
[pid 3688] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3688] write(3, "1000", 4) = 4
[pid 3688] close(3) = 0
[pid 3688] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 38.050125][ T3685] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3688] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3688] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3688] write(4, "37", 2) = 2
[pid 3688] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3688] exit_group(0) = ?
[pid 3688] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3688, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3689
./strace-static-x86_64: Process 3689 attached
[pid 3689] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3689] setpgid(0, 0) = 0
[pid 3689] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3689] write(3, "1000", 4) = 4
[pid 3689] close(3) = 0
[pid 3689] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3689] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3689] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3689] write(4, "37", 2) = 2
[pid 3689] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3689] exit_group(0) = ?
[pid 3689] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3689, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3690
./strace-static-x86_64: Process 3690 attached
[pid 3690] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3690] setpgid(0, 0) = 0
[pid 3690] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3690] write(3, "1000", 4) = 4
[pid 3690] close(3) = 0
[pid 3690] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3690] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3690] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3690] write(4, "37", 2) = 2
[pid 3690] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3690] exit_group(0) = ?
[pid 3690] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3690, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3691
./strace-static-x86_64: Process 3691 attached
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3691] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3691] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3691] write(4, "37", 2) = 2
[pid 3691] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3691] exit_group(0) = ?
[pid 3691] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3691, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3692 attached
[pid 3692] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3692] setpgid(0, 0) = 0
[pid 3692] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3692] write(3, "1000", 4) = 4
[pid 3692] close(3) = 0
[pid 3692] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3692] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3692] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR
[pid 3608] <... clone resumed>, child_tidptr=0x55555650c5d0) = 3692
[pid 3692] <... openat resumed>) = 4
[pid 3692] write(4, "37", 2) = 2
[pid 3692] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3692] exit_group(0) = ?
[pid 3692] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3692, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3693 attached
, child_tidptr=0x55555650c5d0) = 3693
[pid 3693] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3693] setpgid(0, 0) = 0
[pid 3693] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3693] write(3, "1000", 4) = 4
[pid 3693] close(3) = 0
[pid 3693] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3693] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3693] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3693] write(4, "37", 2) = 2
[pid 3693] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3693] exit_group(0) = ?
[pid 3693] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3693, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
[ 38.108367][ T3687] debugfs: Directory 'loop0' with parent 'block' already present!
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3694
./strace-static-x86_64: Process 3694 attached
[pid 3694] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3694] setpgid(0, 0) = 0
[pid 3694] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3694] write(3, "1000", 4) = 4
[pid 3694] close(3) = 0
[pid 3694] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3694] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3694] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3694] write(4, "37", 2) = 2
[pid 3694] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3694] exit_group(0) = ?
[pid 3694] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3694, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3695
./strace-static-x86_64: Process 3695 attached
[pid 3695] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3695] setpgid(0, 0) = 0
[pid 3695] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3695] write(3, "1000", 4) = 4
[pid 3695] close(3) = 0
[pid 3695] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3695] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3695] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3695] write(4, "37", 2) = 2
[pid 3695] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3695] exit_group(0) = ?
[pid 3695] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3695, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3696 attached
, child_tidptr=0x55555650c5d0) = 3696
[pid 3696] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3696] setpgid(0, 0) = 0
[pid 3696] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3696] write(3, "1000", 4) = 4
[pid 3696] close(3) = 0
[pid 3696] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3696] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3696] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3696] write(4, "37", 2) = 2
[pid 3696] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3696] exit_group(0) = ?
[pid 3696] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3696, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3697 attached
, child_tidptr=0x55555650c5d0) = 3697
[pid 3697] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3697] setpgid(0, 0) = 0
[pid 3697] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3697] write(3, "1000", 4) = 4
[pid 3697] close(3) = 0
[pid 3697] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3697] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3697] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3697] write(4, "37", 2) = 2
[pid 3697] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3697] exit_group(0) = ?
[pid 3697] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3697, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3698
./strace-static-x86_64: Process 3698 attached
[pid 3698] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3698] setpgid(0, 0) = 0
[pid 3698] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3698] write(3, "1000", 4) = 4
[pid 3698] close(3) = 0
[pid 3698] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3698] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3698] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3698] write(4, "37", 2) = 2
[ 38.210201][ T3695] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3698] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3698] exit_group(0) = ?
[pid 3698] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3698, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3699 attached
, child_tidptr=0x55555650c5d0) = 3699
[pid 3699] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3699] setpgid(0, 0) = 0
[pid 3699] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3699] write(3, "1000", 4) = 4
[pid 3699] close(3) = 0
[pid 3699] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3699] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3699] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3699] write(4, "37", 2) = 2
[pid 3699] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3699] exit_group(0) = ?
[pid 3699] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3699, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3700] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3700] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3700] write(4, "37", 2) = 2
[pid 3700] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3700] exit_group(0) = ?
[pid 3700] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3700, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3701
./strace-static-x86_64: Process 3701 attached
[pid 3701] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3701] setpgid(0, 0) = 0
[pid 3701] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3701] write(3, "1000", 4) = 4
[pid 3701] close(3) = 0
[pid 3701] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 38.275130][ T3698] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3701] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3701] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3701] write(4, "37", 2) = 2
[pid 3701] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3701] exit_group(0) = ?
[pid 3701] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3701, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3702] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3702] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3702] write(4, "37", 2) = 2
[pid 3702] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3702] exit_group(0) = ?
[pid 3702] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3702, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3703] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3703] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3703] write(4, "37", 2) = 2
[pid 3703] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3703] exit_group(0) = ?
[pid 3703] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3703, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3704 attached
, child_tidptr=0x55555650c5d0) = 3704
[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) = 3
[pid 3704] write(3, "1000", 4) = 4
[pid 3704] close(3) = 0
[pid 3704] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3704] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3704] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3704] write(4, "37", 2) = 2
[pid 3704] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3704] exit_group(0) = ?
[pid 3704] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3704, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3705
./strace-static-x86_64: Process 3705 attached
[pid 3705] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3705] setpgid(0, 0) = 0
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 38.369211][ T3703] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3705] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3705] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3705] write(4, "37", 2) = 2
[pid 3705] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3705] exit_group(0) = ?
[pid 3705] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3705, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3706
./strace-static-x86_64: Process 3706 attached
[pid 3706] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3706] setpgid(0, 0) = 0
[pid 3706] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3706] write(3, "1000", 4) = 4
[pid 3706] close(3) = 0
[pid 3706] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3706] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3706] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3706] write(4, "37", 2) = 2
[pid 3706] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3706] exit_group(0) = ?
[pid 3706] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3706, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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
[ 38.410416][ T3704] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3707] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3707] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3707] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3707] write(4, "37", 2) = 2
[pid 3707] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3707] exit_group(0) = ?
[pid 3707] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3707, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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
[pid 3708] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3708] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3708] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3708] write(4, "37", 2) = 2
[pid 3708] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3708] exit_group(0) = ?
[pid 3708] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3708, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3709
./strace-static-x86_64: Process 3709 attached
[pid 3709] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3709] setpgid(0, 0) = 0
[pid 3709] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3709] write(3, "1000", 4) = 4
[pid 3709] close(3) = 0
[pid 3709] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3709] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3709] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3709] write(4, "37", 2) = 2
[pid 3709] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3709] exit_group(0) = ?
[pid 3709] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3709, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3710
./strace-static-x86_64: Process 3710 attached
[pid 3710] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3710] setpgid(0, 0) = 0
[pid 3710] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3710] write(3, "1000", 4) = 4
[pid 3710] close(3) = 0
[pid 3710] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3710] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3710] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3710] write(4, "37", 2) = 2
[pid 3710] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3710] exit_group(0) = ?
[pid 3710] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3710, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3711
./strace-static-x86_64: Process 3711 attached
[pid 3711] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3711] setpgid(0, 0) = 0
[pid 3711] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3711] write(3, "1000", 4) = 4
[ 38.530087][ T3708] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3711] close(3) = 0
[pid 3711] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3711] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3711] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3711] write(4, "37", 2) = 2
[pid 3711] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3711] exit_group(0) = ?
[pid 3711] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3711, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3712
./strace-static-x86_64: Process 3712 attached
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3712] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3712] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[ 38.588028][ T3710] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3712] write(4, "37", 2) = 2
[pid 3712] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3712] exit_group(0) = ?
[pid 3712] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3712, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3713
./strace-static-x86_64: Process 3713 attached
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3713] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3713] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3713] write(4, "37", 2) = 2
[pid 3713] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3713] exit_group(0) = ?
[pid 3713] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3713, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3714 attached
, child_tidptr=0x55555650c5d0) = 3714
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3714] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3714] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3714] write(4, "37", 2) = 2
[pid 3714] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3714] exit_group(0) = ?
[pid 3714] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3714, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3715
./strace-static-x86_64: Process 3715 attached
[pid 3715] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3715] setpgid(0, 0) = 0
[pid 3715] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3715] write(3, "1000", 4) = 4
[pid 3715] close(3) = 0
[pid 3715] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3715] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 EBUSY (Device or resource busy)
[pid 3715] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3715] write(4, "37", 2) = 2
[pid 3715] ioctl(3, LOOP_CTL_ADD, 0) = -1 EEXIST (File exists)
[pid 3715] exit_group(0) = ?
[pid 3715] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3715, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3716
./strace-static-x86_64: Process 3716 attached
[pid 3716] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3716] setpgid(0, 0) = 0
[ 38.709959][ T3713] debugfs: Directory 'loop0' with parent 'block' already present!
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3716] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3716] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3716] write(4, "37", 2) = 2
[pid 3716] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3716] exit_group(0) = ?
[pid 3716] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3716, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3717
./strace-static-x86_64: Process 3717 attached
[pid 3717] prctl(PR_SET_PDEATHSIG, SIGKILL) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3717] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 EBUSY (Device or resource busy)
[pid 3717] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3717] write(4, "37", 2) = 2
[pid 3717] ioctl(3, LOOP_CTL_ADD, 0) = -1 EEXIST (File exists)
[pid 3717] exit_group(0) = ?
[pid 3717] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3717, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3718
./strace-static-x86_64: Process 3718 attached
[pid 3718] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3718] setpgid(0, 0) = 0
[pid 3718] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3718] write(3, "1000", 4) = 4
[ 38.759431][ T3714] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3718] close(3) = 0
[pid 3718] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3718] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3718] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3718] write(4, "37", 2) = 2
[pid 3718] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3718] exit_group(0) = ?
[pid 3718] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3718, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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 3719] write(3, "1000", 4) = 4
[pid 3719] close(3) = 0
[pid 3719] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3719] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3719] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3719] write(4, "37", 2) = 2
[pid 3719] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3719] exit_group(0) = ?
[pid 3719] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3719, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3720
./strace-static-x86_64: Process 3720 attached
[pid 3720] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3720] setpgid(0, 0) = 0
[pid 3720] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3720] write(3, "1000", 4) = 4
[pid 3720] close(3) = 0
[pid 3720] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3720] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3720] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3720] write(4, "37", 2) = 2
[pid 3720] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3720] exit_group(0) = ?
[pid 3720] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3720, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3721] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3721] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3721] write(4, "37", 2) = 2
[pid 3721] ioctl(3, LOOP_CTL_ADD, 0
[pid 3608] <... clone resumed>, child_tidptr=0x55555650c5d0) = 3721
[pid 3721] <... ioctl resumed>) = 0
[pid 3721] exit_group(0) = ?
[pid 3721] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3721, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3722] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3722] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3722] write(4, "37", 2) = 2
[pid 3722] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3722] exit_group(0) = ?
[pid 3722] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3722, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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
[pid 3723] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 38.883880][ T3721] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3723] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3723] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3723] write(4, "37", 2) = 2
[pid 3723] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3723] exit_group(0) = ?
[pid 3723] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3723, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3724
./strace-static-x86_64: Process 3724 attached
[pid 3724] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3724] setpgid(0, 0) = 0
[pid 3724] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3724] write(3, "1000", 4) = 4
[pid 3724] close(3) = 0
[pid 3724] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 38.920157][ T3722] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3724] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3724] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3724] write(4, "37", 2) = 2
[pid 3724] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3724] exit_group(0) = ?
[pid 3724] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3724, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3725
./strace-static-x86_64: Process 3725 attached
[pid 3725] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3725] setpgid(0, 0) = 0
[pid 3725] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3725] write(3, "1000", 4) = 4
[pid 3725] close(3) = 0
[pid 3725] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3725] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3725] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3725] write(4, "37", 2) = 2
[pid 3725] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3725] exit_group(0) = ?
[pid 3725] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3725, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3726
./strace-static-x86_64: Process 3726 attached
[pid 3726] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3726] setpgid(0, 0) = 0
[pid 3726] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3726] write(3, "1000", 4) = 4
[pid 3726] close(3) = 0
[pid 3726] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3726] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3726] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3726] write(4, "37", 2) = 2
[pid 3726] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3726] exit_group(0) = ?
[pid 3726] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3726, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3727
./strace-static-x86_64: Process 3727 attached
[pid 3727] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3727] setpgid(0, 0) = 0
[pid 3727] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3727] write(3, "1000", 4) = 4
[pid 3727] close(3) = 0
[pid 3727] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3727] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3727] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3727] write(4, "37", 2) = 2
[pid 3727] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3727] exit_group(0) = ?
[pid 3727] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3727, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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
[pid 3728] close(3) = 0
[pid 3728] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 39.038667][ T3725] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3728] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3728] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3728] write(4, "37", 2) = 2
[pid 3728] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3728] exit_group(0) = ?
[pid 3728] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3728, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3729 attached
, child_tidptr=0x55555650c5d0) = 3729
[pid 3729] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3729] setpgid(0, 0) = 0
[pid 3729] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3729] write(3, "1000", 4) = 4
[pid 3729] close(3) = 0
[pid 3729] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 39.150517][ T3728] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3729] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3729] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3729] write(4, "37", 2) = 2
[pid 3729] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3729] exit_group(0) = ?
[pid 3729] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3729, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3730 attached
, child_tidptr=0x55555650c5d0) = 3730
[pid 3730] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3730] setpgid(0, 0) = 0
[pid 3730] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3730] write(3, "1000", 4) = 4
[pid 3730] close(3) = 0
[pid 3730] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3730] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3730] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3730] write(4, "37", 2) = 2
[pid 3730] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3730] exit_group(0) = ?
[pid 3730] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3730, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3731
./strace-static-x86_64: Process 3731 attached
[pid 3731] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3731] setpgid(0, 0) = 0
[pid 3731] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3731] write(3, "1000", 4) = 4
[pid 3731] close(3) = 0
[pid 3731] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3731] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3731] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3731] write(4, "37", 2) = 2
[pid 3731] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3731] exit_group(0) = ?
[pid 3731] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3731, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3732
./strace-static-x86_64: Process 3732 attached
[pid 3732] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3732] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3732] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3732] write(4, "37", 2) = 2
[pid 3732] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3732] exit_group(0) = ?
[pid 3732] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3732, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3733
./strace-static-x86_64: Process 3733 attached
[pid 3733] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3733] setpgid(0, 0) = 0
[pid 3733] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3733] write(3, "1000", 4) = 4
[pid 3733] close(3) = 0
[pid 3733] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3733] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3733] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3733] write(4, "37", 2) = 2
[pid 3733] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3733] exit_group(0) = ?
[pid 3733] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3733, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3734 attached
, child_tidptr=0x55555650c5d0) = 3734
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3734] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3734] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3734] write(4, "37", 2) = 2
[pid 3734] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3734] exit_group(0) = ?
[pid 3734] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3734, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3735] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3735] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3735] write(4, "37", 2) = 2
[pid 3735] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3735] exit_group(0) = ?
[pid 3735] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3735, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3736
./strace-static-x86_64: Process 3736 attached
[pid 3736] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3736] setpgid(0, 0) = 0
[pid 3736] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3736] write(3, "1000", 4) = 4
[pid 3736] close(3) = 0
[pid 3736] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 39.294066][ T3733] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3736] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3736] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3736] write(4, "37", 2) = 2
[pid 3736] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3736] exit_group(0) = ?
[pid 3736] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3736, si_uid=0, si_status=0, si_utime=1, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3737 attached
, child_tidptr=0x55555650c5d0) = 3737
[pid 3737] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3737] setpgid(0, 0) = 0
[pid 3737] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3737] write(3, "1000", 4) = 4
[pid 3737] close(3) = 0
[pid 3737] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 39.337734][ T3735] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3737] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3737] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3737] write(4, "37", 2) = 2
[pid 3737] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3737] exit_group(0) = ?
[pid 3737] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3737, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3738
./strace-static-x86_64: Process 3738 attached
[pid 3738] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3738] setpgid(0, 0) = 0
[pid 3738] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3738] write(3, "1000", 4) = 4
[pid 3738] close(3) = 0
[pid 3738] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3738] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3738] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3738] write(4, "37", 2) = 2
[pid 3738] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3738] exit_group(0) = ?
[pid 3738] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3738, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3739
./strace-static-x86_64: Process 3739 attached
[pid 3739] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3739] setpgid(0, 0) = 0
[pid 3739] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3739] write(3, "1000", 4) = 4
[pid 3739] close(3) = 0
[pid 3739] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3739] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3739] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3739] write(4, "37", 2) = 2
[pid 3739] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3739] exit_group(0) = ?
[pid 3739] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3739, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3740
./strace-static-x86_64: Process 3740 attached
[pid 3740] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3740] setpgid(0, 0) = 0
[pid 3740] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3740] write(3, "1000", 4) = 4
[pid 3740] close(3) = 0
[pid 3740] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3740] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3740] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3740] write(4, "37", 2) = 2
[pid 3740] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3740] exit_group(0) = ?
[pid 3740] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3740, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3741
./strace-static-x86_64: Process 3741 attached
[pid 3741] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3741] setpgid(0, 0) = 0
[pid 3741] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3741] write(3, "1000", 4) = 4
[pid 3741] close(3) = 0
[pid 3741] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3741] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3741] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3741] write(4, "37", 2) = 2
[pid 3741] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3741] exit_group(0) = ?
[pid 3741] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3741, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3742 attached
, child_tidptr=0x55555650c5d0) = 3742
[pid 3742] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3742] setpgid(0, 0) = 0
[pid 3742] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3742] write(3, "1000", 4) = 4
[pid 3742] close(3) = 0
[pid 3742] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3742] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3742] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3742] write(4, "37", 2) = 2
[pid 3742] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3742] exit_group(0) = ?
[pid 3742] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3742, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3743 attached
, child_tidptr=0x55555650c5d0) = 3743
[pid 3743] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3743] setpgid(0, 0) = 0
[pid 3743] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3743] write(3, "1000", 4) = 4
[pid 3743] close(3) = 0
[pid 3743] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3743] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3743] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3743] write(4, "37", 2) = 2
[pid 3743] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3743] exit_group(0) = ?
[pid 3743] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3743, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3744 attached
, child_tidptr=0x55555650c5d0) = 3744
[pid 3744] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[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) = 0
[pid 3744] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3744] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3744] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3744] write(4, "37", 2) = 2
[pid 3744] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3744] exit_group(0) = ?
[pid 3744] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3744, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3745
./strace-static-x86_64: Process 3745 attached
[pid 3745] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3745] setpgid(0, 0) = 0
[pid 3745] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3745] write(3, "1000", 4) = 4
[pid 3745] close(3) = 0
[pid 3745] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3745] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3745] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3745] write(4, "37", 2) = 2
[pid 3745] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3745] exit_group(0) = ?
[pid 3745] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3745, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3746 attached
, child_tidptr=0x55555650c5d0) = 3746
[pid 3746] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3746] setpgid(0, 0) = 0
[pid 3746] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3746] write(3, "1000", 4) = 4
[pid 3746] close(3) = 0
[pid 3746] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3746] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3746] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3746] write(4, "37", 2) = 2
[pid 3746] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3746] exit_group(0) = ?
[pid 3746] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3746, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3747 attached
[pid 3747] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3747] setpgid(0, 0) = 0
[pid 3608] <... clone resumed>, child_tidptr=0x55555650c5d0) = 3747
[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) = 0
[pid 3747] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3747] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3747] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3747] write(4, "37", 2) = 2
[pid 3747] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3747] exit_group(0) = ?
[pid 3747] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3747, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3748 attached
, child_tidptr=0x55555650c5d0) = 3748
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3748] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3748] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3748] write(4, "37", 2) = 2
[ 39.486348][ T3742] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3748] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3748] exit_group(0) = ?
[pid 3748] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3748, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3749
./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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3749] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3749] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3749] write(4, "37", 2) = 2
[pid 3749] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3749] exit_group(0) = ?
[pid 3749] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3749, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3750
./strace-static-x86_64: Process 3750 attached
[pid 3750] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3750] setpgid(0, 0) = 0
[pid 3750] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3750] write(3, "1000", 4) = 4
[pid 3750] close(3) = 0
[pid 3750] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3750] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[ 39.590214][ T3749] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3750] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3750] write(4, "37", 2) = 2
[pid 3750] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3750] exit_group(0) = ?
[pid 3750] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3750, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3751 attached
, child_tidptr=0x55555650c5d0) = 3751
[pid 3751] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3751] setpgid(0, 0) = 0
[pid 3751] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3751] write(3, "1000", 4) = 4
[pid 3751] close(3) = 0
[pid 3751] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3751] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3751] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3751] write(4, "37", 2) = 2
[pid 3751] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3751] exit_group(0) = ?
[pid 3751] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3751, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3752
./strace-static-x86_64: Process 3752 attached
[pid 3752] prctl(PR_SET_PDEATHSIG, SIGKILL) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3752] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3752] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3752] write(4, "37", 2) = 2
[pid 3752] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3752] exit_group(0) = ?
[pid 3752] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3752, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3753
./strace-static-x86_64: Process 3753 attached
[pid 3753] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3753] setpgid(0, 0) = 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 3753] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3753] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3753] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3753] write(4, "37", 2) = 2
[pid 3753] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3753] exit_group(0) = ?
[pid 3753] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3753, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3754 attached
, child_tidptr=0x55555650c5d0) = 3754
[pid 3754] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3754] setpgid(0, 0) = 0
[pid 3754] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3754] write(3, "1000", 4) = 4
[pid 3754] close(3) = 0
[pid 3754] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 39.659022][ T3750] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3754] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3754] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3754] write(4, "37", 2) = 2
[pid 3754] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3754] exit_group(0) = ?
[pid 3754] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3754, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3755
./strace-static-x86_64: Process 3755 attached
[pid 3755] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3755] setpgid(0, 0) = 0
[pid 3755] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3755] write(3, "1000", 4) = 4
[pid 3755] close(3) = 0
[pid 3755] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3755] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3755] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3755] write(4, "37", 2) = 2
[pid 3755] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3755] exit_group(0) = ?
[pid 3755] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3755, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3756
./strace-static-x86_64: Process 3756 attached
[pid 3756] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3756] setpgid(0, 0) = 0
[pid 3756] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3756] write(3, "1000", 4) = 4
[pid 3756] close(3) = 0
[pid 3756] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3756] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3756] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3756] write(4, "37", 2) = 2
[pid 3756] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3756] exit_group(0) = ?
[pid 3756] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3756, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3757
./strace-static-x86_64: Process 3757 attached
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3757] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3757] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3757] write(4, "37", 2) = 2
[pid 3757] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3757] exit_group(0) = ?
[pid 3757] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3757, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3758
./strace-static-x86_64: Process 3758 attached
[pid 3758] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3758] setpgid(0, 0) = 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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3758] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3758] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3758] write(4, "37", 2) = 2
[pid 3758] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3758] exit_group(0) = ?
[pid 3758] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3758, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3759
./strace-static-x86_64: Process 3759 attached
[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] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3759] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3759] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3759] write(4, "37", 2) = 2
[pid 3759] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3759] exit_group(0) = ?
[pid 3759] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3759, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3760
./strace-static-x86_64: Process 3760 attached
[pid 3760] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3760] setpgid(0, 0) = 0
[pid 3760] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3760] write(3, "1000", 4) = 4
[pid 3760] close(3) = 0
[pid 3760] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3760] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3760] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3760] write(4, "37", 2) = 2
[pid 3760] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3760] exit_group(0) = ?
[pid 3760] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3760, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3761
./strace-static-x86_64: Process 3761 attached
[pid 3761] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3761] setpgid(0, 0) = 0
[pid 3761] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3761] write(3, "1000", 4) = 4
[pid 3761] close(3) = 0
[pid 3761] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3761] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3761] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3761] write(4, "37", 2) = 2
[pid 3761] ioctl(3, LOOP_CTL_ADD, 0) = 0
[ 39.784092][ T3757] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3761] exit_group(0) = ?
[pid 3761] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3761, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3762 attached
, child_tidptr=0x55555650c5d0) = 3762
[pid 3762] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3762] setpgid(0, 0) = 0
[pid 3762] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3762] write(3, "1000", 4) = 4
[pid 3762] close(3) = 0
[pid 3762] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3762] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3762] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3762] write(4, "37", 2) = 2
[pid 3762] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3762] exit_group(0) = ?
[pid 3762] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3762, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3763
./strace-static-x86_64: Process 3763 attached
[pid 3763] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3763] setpgid(0, 0) = 0
[pid 3763] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3763] write(3, "1000", 4) = 4
[pid 3763] close(3) = 0
[pid 3763] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3763] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3763] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3763] write(4, "37", 2) = 2
[pid 3763] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3763] exit_group(0) = ?
[pid 3763] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3763, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3764
./strace-static-x86_64: Process 3764 attached
[pid 3764] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3764] setpgid(0, 0) = 0
[pid 3764] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3764] write(3, "1000", 4) = 4
[pid 3764] close(3) = 0
[pid 3764] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3764] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3764] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3764] write(4, "37", 2) = 2
[pid 3764] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3764] exit_group(0) = ?
[pid 3764] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3764, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3765 attached
, child_tidptr=0x55555650c5d0) = 3765
[pid 3765] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3765] setpgid(0, 0) = 0
[pid 3765] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3765] write(3, "1000", 4) = 4
[pid 3765] close(3) = 0
[pid 3765] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3765] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3765] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3765] write(4, "37", 2) = 2
[pid 3765] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3765] exit_group(0) = ?
[pid 3765] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3765, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3766
./strace-static-x86_64: Process 3766 attached
[pid 3766] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3766] setpgid(0, 0) = 0
[pid 3766] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3766] write(3, "1000", 4) = 4
[pid 3766] close(3) = 0
[pid 3766] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3766] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3766] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3766] write(4, "37", 2) = 2
[pid 3766] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3766] exit_group(0) = ?
[pid 3766] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3766, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3767
./strace-static-x86_64: Process 3767 attached
[pid 3767] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3767] setpgid(0, 0) = 0
[pid 3767] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3767] write(3, "1000", 4) = 4
[pid 3767] close(3) = 0
[pid 3767] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3767] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3767] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3767] write(4, "37", 2) = 2
[pid 3767] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3767] exit_group(0) = ?
[pid 3767] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3767, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3768 attached
[pid 3768] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3768] setpgid(0, 0) = 0
[pid 3768] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3768] write(3, "1000", 4) = 4
[pid 3768] close(3) = 0
[pid 3768] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3768] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3768] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3768] write(4, "37", 2) = 2
[pid 3768] ioctl(3, LOOP_CTL_ADD, 0
[pid 3608] <... clone resumed>, child_tidptr=0x55555650c5d0) = 3768
[pid 3768] <... ioctl resumed>) = -1 ENOMEM (Cannot allocate memory)
[pid 3768] exit_group(0) = ?
[pid 3768] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3768, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3769 attached
[ 39.899596][ T3764] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3769] prctl(PR_SET_PDEATHSIG, SIGKILL
[pid 3608] <... clone resumed>, child_tidptr=0x55555650c5d0) = 3769
[pid 3769] <... prctl resumed>) = 0
[pid 3769] setpgid(0, 0) = 0
[pid 3769] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3769] write(3, "1000", 4) = 4
[pid 3769] close(3) = 0
[pid 3769] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3769] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3769] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3769] write(4, "37", 2) = 2
[pid 3769] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3769] exit_group(0) = ?
[pid 3769] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3769, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3770
./strace-static-x86_64: Process 3770 attached
[pid 3770] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3770] setpgid(0, 0) = 0
[pid 3770] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3770] write(3, "1000", 4) = 4
[pid 3770] close(3) = 0
[pid 3770] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3770] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3770] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3770] write(4, "37", 2) = 2
[pid 3770] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3770] exit_group(0) = ?
[pid 3770] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3770, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3771 attached
, child_tidptr=0x55555650c5d0) = 3771
[pid 3771] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3771] setpgid(0, 0) = 0
[pid 3771] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3771] write(3, "1000", 4) = 4
[pid 3771] close(3) = 0
[pid 3771] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3771] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3771] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3771] write(4, "37", 2) = 2
[pid 3771] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3771] exit_group(0) = ?
[pid 3771] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3771, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3772
./strace-static-x86_64: Process 3772 attached
[pid 3772] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3772] setpgid(0, 0) = 0
[pid 3772] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3772] write(3, "1000", 4) = 4
[pid 3772] close(3) = 0
[pid 3772] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3772] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3772] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3772] write(4, "37", 2) = 2
[pid 3772] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3772] exit_group(0) = ?
[pid 3772] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3772, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3773
./strace-static-x86_64: Process 3773 attached
[pid 3773] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3773] setpgid(0, 0) = 0
[pid 3773] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3773] write(3, "1000", 4) = 4
[pid 3773] close(3) = 0
[pid 3773] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 40.019700][ T3770] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3773] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3773] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3773] write(4, "37", 2) = 2
[pid 3773] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3773] exit_group(0) = ?
[pid 3773] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3773, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3774 attached
, child_tidptr=0x55555650c5d0) = 3774
[pid 3774] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3774] setpgid(0, 0) = 0
[pid 3774] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3774] write(3, "1000", 4) = 4
[pid 3774] close(3) = 0
[pid 3774] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3774] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3774] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3774] write(4, "37", 2) = 2
[pid 3774] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3774] exit_group(0) = ?
[pid 3774] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3774, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3775
./strace-static-x86_64: Process 3775 attached
[pid 3775] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3775] setpgid(0, 0) = 0
[pid 3775] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3775] write(3, "1000", 4) = 4
[pid 3775] close(3) = 0
[pid 3775] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3775] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3775] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3775] write(4, "37", 2) = 2
[pid 3775] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3775] exit_group(0) = ?
[ 40.077505][ T3772] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3775] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3775, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3776
./strace-static-x86_64: Process 3776 attached
[pid 3776] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3776] setpgid(0, 0) = 0
[pid 3776] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3776] write(3, "1000", 4) = 4
[pid 3776] close(3) = 0
[pid 3776] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3776] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3776] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3776] write(4, "37", 2) = 2
[pid 3776] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3776] exit_group(0) = ?
[pid 3776] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3776, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3777 attached
, child_tidptr=0x55555650c5d0) = 3777
[pid 3777] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3777] setpgid(0, 0) = 0
[pid 3777] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3777] write(3, "1000", 4) = 4
[pid 3777] close(3) = 0
[pid 3777] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3777] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3777] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3777] write(4, "37", 2) = 2
[pid 3777] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3777] exit_group(0) = ?
[pid 3777] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3777, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3778
./strace-static-x86_64: Process 3778 attached
[pid 3778] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3778] setpgid(0, 0) = 0
[pid 3778] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3778] write(3, "1000", 4) = 4
[pid 3778] close(3) = 0
[pid 3778] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3778] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3778] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3778] write(4, "37", 2) = 2
[pid 3778] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3778] exit_group(0) = ?
[pid 3778] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3778, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3779 attached
, child_tidptr=0x55555650c5d0) = 3779
[pid 3779] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3779] setpgid(0, 0) = 0
[pid 3779] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3779] write(3, "1000", 4) = 4
[pid 3779] close(3) = 0
[pid 3779] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3779] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3779] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3779] write(4, "37", 2) = 2
[pid 3779] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3779] exit_group(0) = ?
[pid 3779] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3779, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3780
./strace-static-x86_64: Process 3780 attached
[pid 3780] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3780] setpgid(0, 0) = 0
[pid 3780] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3780] write(3, "1000", 4) = 4
[pid 3780] close(3) = 0
[pid 3780] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3780] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3780] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3780] write(4, "37", 2) = 2
[pid 3780] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3780] exit_group(0) = ?
[pid 3780] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3780, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3781
./strace-static-x86_64: Process 3781 attached
[pid 3781] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[ 40.208468][ T3777] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3781] setpgid(0, 0) = 0
[pid 3781] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3781] write(3, "1000", 4) = 4
[pid 3781] close(3) = 0
[pid 3781] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3781] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3781] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3781] write(4, "37", 2) = 2
[pid 3781] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3781] exit_group(0) = ?
[pid 3781] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3781, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3782 attached
, child_tidptr=0x55555650c5d0) = 3782
[pid 3782] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3782] setpgid(0, 0) = 0
[pid 3782] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3782] write(3, "1000", 4) = 4
[pid 3782] close(3) = 0
[pid 3782] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3782] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3782] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3782] write(4, "37", 2) = 2
[pid 3782] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3782] exit_group(0) = ?
[pid 3782] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3782, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3783
./strace-static-x86_64: Process 3783 attached
[pid 3783] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3783] setpgid(0, 0) = 0
[pid 3783] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3783] write(3, "1000", 4) = 4
[pid 3783] close(3) = 0
[pid 3783] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3783] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3783] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3783] write(4, "37", 2) = 2
[pid 3783] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3783] exit_group(0) = ?
[pid 3783] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3783, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3784 attached
, child_tidptr=0x55555650c5d0) = 3784
[pid 3784] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3784] setpgid(0, 0) = 0
[pid 3784] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3784] write(3, "1000", 4) = 4
[pid 3784] close(3) = 0
[pid 3784] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3784] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3784] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3784] write(4, "37", 2) = 2
[pid 3784] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3784] exit_group(0) = ?
[pid 3784] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3784, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3785 attached
, child_tidptr=0x55555650c5d0) = 3785
[pid 3785] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3785] setpgid(0, 0) = 0
[pid 3785] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3785] write(3, "1000", 4) = 4
[pid 3785] close(3) = 0
[pid 3785] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3785] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3785] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3785] write(4, "37", 2) = 2
[pid 3785] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3785] exit_group(0) = ?
[pid 3785] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3785, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3786
./strace-static-x86_64: Process 3786 attached
[pid 3786] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3786] setpgid(0, 0) = 0
[pid 3786] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3786] write(3, "1000", 4) = 4
[pid 3786] close(3) = 0
[pid 3786] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3786] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3786] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3786] write(4, "37", 2) = 2
[pid 3786] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3786] exit_group(0) = ?
[pid 3786] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3786, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3787
./strace-static-x86_64: Process 3787 attached
[pid 3787] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3787] setpgid(0, 0) = 0
[pid 3787] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3787] write(3, "1000", 4) = 4
[pid 3787] close(3) = 0
[pid 3787] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 40.345008][ T3786] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3787] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3787] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3787] write(4, "37", 2) = 2
[pid 3787] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3787] exit_group(0) = ?
[pid 3787] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3787, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3788
./strace-static-x86_64: Process 3788 attached
[pid 3788] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3788] setpgid(0, 0) = 0
[pid 3788] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3788] write(3, "1000", 4) = 4
[pid 3788] close(3) = 0
[pid 3788] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3788] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3788] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3788] write(4, "37", 2) = 2
[pid 3788] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3788] exit_group(0) = ?
[pid 3788] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3788, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3789
./strace-static-x86_64: Process 3789 attached
[pid 3789] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3789] setpgid(0, 0) = 0
[pid 3789] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3789] write(3, "1000", 4) = 4
[pid 3789] close(3) = 0
[pid 3789] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3789] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3789] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3789] write(4, "37", 2) = 2
[pid 3789] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3789] exit_group(0) = ?
[pid 3789] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3789, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3790
./strace-static-x86_64: Process 3790 attached
[pid 3790] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[ 40.469435][ T3788] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3790] setpgid(0, 0) = 0
[pid 3790] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3790] write(3, "1000", 4) = 4
[pid 3790] close(3) = 0
[pid 3790] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3790] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3790] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3790] write(4, "37", 2) = 2
[pid 3790] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3790] exit_group(0) = ?
[pid 3790] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3790, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3791
./strace-static-x86_64: Process 3791 attached
[pid 3791] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3791] setpgid(0, 0) = 0
[pid 3791] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3791] write(3, "1000", 4) = 4
[pid 3791] close(3) = 0
[pid 3791] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3791] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3791] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3791] write(4, "37", 2) = 2
[pid 3791] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3791] exit_group(0) = ?
[pid 3791] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3791, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3792
./strace-static-x86_64: Process 3792 attached
[pid 3792] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3792] setpgid(0, 0) = 0
[pid 3792] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3792] write(3, "1000", 4) = 4
[pid 3792] close(3) = 0
[pid 3792] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3792] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3792] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3792] write(4, "37", 2) = 2
[pid 3792] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3792] exit_group(0) = ?
[pid 3792] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3792, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3793
./strace-static-x86_64: Process 3793 attached
[pid 3793] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3793] setpgid(0, 0) = 0
[pid 3793] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3793] write(3, "1000", 4) = 4
[pid 3793] close(3) = 0
[pid 3793] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3793] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3793] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3793] write(4, "37", 2) = 2
[pid 3793] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3793] exit_group(0) = ?
[pid 3793] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3793, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3794
./strace-static-x86_64: Process 3794 attached
[pid 3794] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3794] setpgid(0, 0) = 0
[pid 3794] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3794] write(3, "1000", 4) = 4
[pid 3794] close(3) = 0
[pid 3794] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3794] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3794] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3794] write(4, "37", 2) = 2
[pid 3794] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3794] exit_group(0) = ?
[pid 3794] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3794, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3795 attached
[pid 3795] prctl(PR_SET_PDEATHSIG, SIGKILL
[pid 3608] <... clone resumed>, child_tidptr=0x55555650c5d0) = 3795
[pid 3795] <... prctl resumed>) = 0
[pid 3795] setpgid(0, 0) = 0
[pid 3795] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3795] write(3, "1000", 4) = 4
[pid 3795] close(3) = 0
[pid 3795] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3795] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3795] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3795] write(4, "37", 2) = 2
[pid 3795] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3795] exit_group(0) = ?
[pid 3795] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3795, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3796
./strace-static-x86_64: Process 3796 attached
[pid 3796] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3796] setpgid(0, 0) = 0
[pid 3796] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3796] write(3, "1000", 4) = 4
[pid 3796] close(3) = 0
[pid 3796] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3796] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3796] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3796] write(4, "37", 2) = 2
[pid 3796] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3796] exit_group(0) = ?
[pid 3796] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3796, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3797 attached
, child_tidptr=0x55555650c5d0) = 3797
[pid 3797] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3797] setpgid(0, 0) = 0
[pid 3797] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3797] write(3, "1000", 4) = 4
[pid 3797] close(3) = 0
[pid 3797] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 40.619758][ T3795] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3797] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3797] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3797] write(4, "37", 2) = 2
[pid 3797] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3797] exit_group(0) = ?
[pid 3797] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3797, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3798
./strace-static-x86_64: Process 3798 attached
[pid 3798] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3798] setpgid(0, 0) = 0
[pid 3798] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3798] write(3, "1000", 4) = 4
[pid 3798] close(3) = 0
[pid 3798] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3798] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[ 40.709634][ T3797] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3798] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3798] write(4, "37", 2) = 2
[pid 3798] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3798] exit_group(0) = ?
[pid 3798] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3798, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3799
./strace-static-x86_64: Process 3799 attached
[pid 3799] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3799] setpgid(0, 0) = 0
[pid 3799] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3799] write(3, "1000", 4) = 4
[pid 3799] close(3) = 0
[pid 3799] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3799] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3799] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3799] write(4, "37", 2) = 2
[pid 3799] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3799] exit_group(0) = ?
[pid 3799] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3799, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3800
./strace-static-x86_64: Process 3800 attached
[pid 3800] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3800] setpgid(0, 0) = 0
[pid 3800] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3800] write(3, "1000", 4) = 4
[pid 3800] close(3) = 0
[pid 3800] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3800] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3800] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3800] write(4, "37", 2) = 2
[pid 3800] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3800] exit_group(0) = ?
[pid 3800] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3800, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3801
./strace-static-x86_64: Process 3801 attached
[pid 3801] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3801] setpgid(0, 0) = 0
[pid 3801] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3801] write(3, "1000", 4) = 4
[pid 3801] close(3) = 0
[pid 3801] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3801] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3801] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3801] write(4, "37", 2) = 2
[pid 3801] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3801] exit_group(0) = ?
[pid 3801] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3801, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3802
./strace-static-x86_64: Process 3802 attached
[pid 3802] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3802] setpgid(0, 0) = 0
[pid 3802] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3802] write(3, "1000", 4) = 4
[pid 3802] close(3) = 0
[pid 3802] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3802] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3802] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3802] write(4, "37", 2) = 2
[pid 3802] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3802] exit_group(0) = ?
[pid 3802] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3802, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3803
./strace-static-x86_64: Process 3803 attached
[pid 3803] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3803] setpgid(0, 0) = 0
[pid 3803] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3803] write(3, "1000", 4) = 4
[pid 3803] close(3) = 0
[pid 3803] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3803] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3803] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[ 40.839727][ T3801] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3803] write(4, "37", 2) = 2
[pid 3803] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3803] exit_group(0) = ?
[pid 3803] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3803, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3804
./strace-static-x86_64: Process 3804 attached
[pid 3804] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3804] setpgid(0, 0) = 0
[pid 3804] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3804] write(3, "1000", 4) = 4
[pid 3804] close(3) = 0
[pid 3804] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3804] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3804] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3804] write(4, "37", 2) = 2
[pid 3804] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3804] exit_group(0) = ?
[pid 3804] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3804, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3805
./strace-static-x86_64: Process 3805 attached
[pid 3805] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3805] setpgid(0, 0) = 0
[pid 3805] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3805] write(3, "1000", 4) = 4
[pid 3805] close(3) = 0
[pid 3805] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3805] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3805] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3805] write(4, "37", 2) = 2
[pid 3805] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3805] exit_group(0) = ?
[pid 3805] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3805, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3806
./strace-static-x86_64: Process 3806 attached
[pid 3806] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3806] setpgid(0, 0) = 0
[pid 3806] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3806] write(3, "1000", 4) = 4
[pid 3806] close(3) = 0
[pid 3806] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3806] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3806] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3806] write(4, "37", 2) = 2
[pid 3806] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3806] exit_group(0) = ?
[pid 3806] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3806, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3807
./strace-static-x86_64: Process 3807 attached
[pid 3807] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3807] setpgid(0, 0) = 0
[pid 3807] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3807] write(3, "1000", 4) = 4
[pid 3807] close(3) = 0
[pid 3807] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3807] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3807] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3807] write(4, "37", 2) = 2
[pid 3807] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3807] exit_group(0) = ?
[pid 3807] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3807, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3808
./strace-static-x86_64: Process 3808 attached
[pid 3808] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3808] setpgid(0, 0) = 0
[pid 3808] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3808] write(3, "1000", 4) = 4
[pid 3808] close(3) = 0
[pid 3808] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3808] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3808] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3808] write(4, "37", 2) = 2
[pid 3808] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3808] exit_group(0) = ?
[pid 3808] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3808, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
[ 40.969961][ T3806] debugfs: Directory 'loop0' with parent 'block' already present!
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3809
./strace-static-x86_64: Process 3809 attached
[pid 3809] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3809] setpgid(0, 0) = 0
[pid 3809] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3809] write(3, "1000", 4) = 4
[pid 3809] close(3) = 0
[pid 3809] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3809] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3809] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3809] write(4, "37", 2) = 2
[pid 3809] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3809] exit_group(0) = ?
[pid 3809] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3809, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3810
./strace-static-x86_64: Process 3810 attached
[ 41.034732][ T3808] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3810] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3810] setpgid(0, 0) = 0
[pid 3810] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3810] write(3, "1000", 4) = 4
[pid 3810] close(3) = 0
[pid 3810] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3810] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3810] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3810] write(4, "37", 2) = 2
[pid 3810] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3810] exit_group(0) = ?
[pid 3810] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3810, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3811 attached
, child_tidptr=0x55555650c5d0) = 3811
[pid 3811] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3811] setpgid(0, 0) = 0
[pid 3811] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3811] write(3, "1000", 4) = 4
[pid 3811] close(3) = 0
[pid 3811] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3811] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3811] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3811] write(4, "37", 2) = 2
[pid 3811] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3811] exit_group(0) = ?
[pid 3811] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3811, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3812
./strace-static-x86_64: Process 3812 attached
[pid 3812] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3812] setpgid(0, 0) = 0
[pid 3812] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3812] write(3, "1000", 4) = 4
[pid 3812] close(3) = 0
[pid 3812] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3812] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3812] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3812] write(4, "37", 2) = 2
[pid 3812] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3812] exit_group(0) = ?
[pid 3812] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3812, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3813
./strace-static-x86_64: Process 3813 attached
[pid 3813] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3813] setpgid(0, 0) = 0
[pid 3813] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3813] write(3, "1000", 4) = 4
[pid 3813] close(3) = 0
[pid 3813] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3813] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3813] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3813] write(4, "37", 2) = 2
[pid 3813] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3813] exit_group(0) = ?
[pid 3813] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3813, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3814
./strace-static-x86_64: Process 3814 attached
[pid 3814] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3814] setpgid(0, 0) = 0
[pid 3814] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3814] write(3, "1000", 4) = 4
[pid 3814] close(3) = 0
[ 41.178969][ T3811] debugfs: Directory 'loop0' with parent 'block' already present!
[ 41.210065][ T3812] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3814] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3814] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3814] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3814] write(4, "37", 2) = 2
[pid 3814] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3814] exit_group(0) = ?
[pid 3814] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3814, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3815
./strace-static-x86_64: Process 3815 attached
[pid 3815] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3815] setpgid(0, 0) = 0
[pid 3815] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3815] write(3, "1000", 4) = 4
[pid 3815] close(3) = 0
[pid 3815] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3815] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3815] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3815] write(4, "37", 2) = 2
[pid 3815] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3815] exit_group(0) = ?
[pid 3815] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3815, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3816 attached
, child_tidptr=0x55555650c5d0) = 3816
[pid 3816] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3816] setpgid(0, 0) = 0
[pid 3816] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3816] write(3, "1000", 4) = 4
[pid 3816] close(3) = 0
[pid 3816] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 41.324288][ T3815] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3816] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3816] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3816] write(4, "37", 2) = 2
[pid 3816] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3816] exit_group(0) = ?
[pid 3816] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3816, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3817 attached
, child_tidptr=0x55555650c5d0) = 3817
[pid 3817] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3817] setpgid(0, 0) = 0
[pid 3817] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3817] write(3, "1000", 4) = 4
[pid 3817] close(3) = 0
[pid 3817] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3817] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3817] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3817] write(4, "37", 2) = 2
[pid 3817] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3817] exit_group(0) = ?
[pid 3817] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3817, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3818
./strace-static-x86_64: Process 3818 attached
[pid 3818] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3818] setpgid(0, 0) = 0
[pid 3818] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3818] write(3, "1000", 4) = 4
[pid 3818] close(3) = 0
[pid 3818] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 41.439758][ T3817] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3818] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3818] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3818] write(4, "37", 2) = 2
[pid 3818] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3818] exit_group(0) = ?
[pid 3818] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3818, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3819
./strace-static-x86_64: Process 3819 attached
[pid 3819] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3819] setpgid(0, 0) = 0
[pid 3819] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3819] write(3, "1000", 4) = 4
[pid 3819] close(3) = 0
[pid 3819] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3819] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3819] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3819] write(4, "37", 2) = 2
[pid 3819] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3819] exit_group(0) = ?
[pid 3819] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3819, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3820
./strace-static-x86_64: Process 3820 attached
[pid 3820] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3820] setpgid(0, 0) = 0
[pid 3820] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3820] write(3, "1000", 4) = 4
[pid 3820] close(3) = 0
[pid 3820] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3820] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3820] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3820] write(4, "37", 2) = 2
[pid 3820] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3820] exit_group(0) = ?
[pid 3820] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3820, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3821
./strace-static-x86_64: Process 3821 attached
[pid 3821] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3821] setpgid(0, 0) = 0
[pid 3821] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3821] write(3, "1000", 4) = 4
[pid 3821] close(3) = 0
[pid 3821] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3821] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3821] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3821] write(4, "37", 2) = 2
[pid 3821] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3821] exit_group(0) = ?
[pid 3821] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3821, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3822
./strace-static-x86_64: Process 3822 attached
[pid 3822] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3822] setpgid(0, 0) = 0
[pid 3822] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3822] write(3, "1000", 4) = 4
[pid 3822] close(3) = 0
[pid 3822] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3822] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3822] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3822] write(4, "37", 2) = 2
[ 41.559809][ T3820] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3822] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3822] exit_group(0) = ?
[pid 3822] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3822, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3823 attached
, child_tidptr=0x55555650c5d0) = 3823
[pid 3823] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3823] setpgid(0, 0) = 0
[pid 3823] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3823] write(3, "1000", 4) = 4
[pid 3823] close(3) = 0
[pid 3823] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3823] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3823] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3823] write(4, "37", 2) = 2
[pid 3823] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3823] exit_group(0) = ?
[pid 3823] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3823, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3824
./strace-static-x86_64: Process 3824 attached
[pid 3824] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3824] setpgid(0, 0) = 0
[pid 3824] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3824] write(3, "1000", 4) = 4
[pid 3824] close(3) = 0
[pid 3824] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3824] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 EBUSY (Device or resource busy)
[pid 3824] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3824] write(4, "37", 2) = 2
[pid 3824] ioctl(3, LOOP_CTL_ADD, 0) = -1 EEXIST (File exists)
[pid 3824] exit_group(0) = ?
[pid 3824] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3824, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3825
./strace-static-x86_64: Process 3825 attached
[pid 3825] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3825] setpgid(0, 0) = 0
[ 41.624781][ T3822] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3825] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3825] write(3, "1000", 4) = 4
[pid 3825] close(3) = 0
[pid 3825] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3825] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3825] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3825] write(4, "37", 2) = 2
[pid 3825] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3825] exit_group(0) = ?
[pid 3825] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3825, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3826
./strace-static-x86_64: Process 3826 attached
[pid 3826] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3826] setpgid(0, 0) = 0
[pid 3826] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3826] write(3, "1000", 4) = 4
[pid 3826] close(3) = 0
[pid 3826] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3826] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3826] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3826] write(4, "37", 2) = 2
[pid 3826] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3826] exit_group(0) = ?
[pid 3826] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3826, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3827 attached
, child_tidptr=0x55555650c5d0) = 3827
[pid 3827] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3827] setpgid(0, 0) = 0
[pid 3827] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3827] write(3, "1000", 4) = 4
[pid 3827] close(3) = 0
[pid 3827] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3827] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3827] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3827] write(4, "37", 2) = 2
[pid 3827] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3827] exit_group(0) = ?
[pid 3827] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3827, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3828
./strace-static-x86_64: Process 3828 attached
[pid 3828] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3828] setpgid(0, 0) = 0
[pid 3828] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3828] write(3, "1000", 4) = 4
[pid 3828] close(3) = 0
[pid 3828] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 41.735909][ T3826] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3828] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3828] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3828] write(4, "37", 2) = 2
[pid 3828] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3828] exit_group(0) = ?
[pid 3828] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3828, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3829
./strace-static-x86_64: Process 3829 attached
[pid 3829] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3829] setpgid(0, 0) = 0
[pid 3829] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3829] write(3, "1000", 4) = 4
[pid 3829] close(3) = 0
[pid 3829] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3829] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3829] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3829] write(4, "37", 2) = 2
[pid 3829] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3829] exit_group(0) = ?
[pid 3829] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3829, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3830
./strace-static-x86_64: Process 3830 attached
[pid 3830] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3830] setpgid(0, 0) = 0
[pid 3830] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3830] write(3, "1000", 4) = 4
[pid 3830] close(3) = 0
[pid 3830] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3830] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3830] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3830] write(4, "37", 2) = 2
[pid 3830] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3830] exit_group(0) = ?
[pid 3830] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3830, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3831
./strace-static-x86_64: Process 3831 attached
[pid 3831] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3831] setpgid(0, 0) = 0
[pid 3831] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3831] write(3, "1000", 4) = 4
[pid 3831] close(3) = 0
[pid 3831] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3831] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3831] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3831] write(4, "37", 2) = 2
[pid 3831] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3831] exit_group(0) = ?
[pid 3831] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3831, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3832
./strace-static-x86_64: Process 3832 attached
[pid 3832] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3832] setpgid(0, 0) = 0
[pid 3832] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3832] write(3, "1000", 4) = 4
[pid 3832] close(3) = 0
[ 41.854112][ T3829] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3832] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3832] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3832] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3832] write(4, "37", 2) = 2
[pid 3832] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3832] exit_group(0) = ?
[pid 3832] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3832, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3833
./strace-static-x86_64: Process 3833 attached
[pid 3833] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3833] setpgid(0, 0) = 0
[pid 3833] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3833] write(3, "1000", 4) = 4
[pid 3833] close(3) = 0
[pid 3833] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3833] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3833] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3833] write(4, "37", 2) = 2
[pid 3833] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3833] exit_group(0) = ?
[pid 3833] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3833, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3834 attached
, child_tidptr=0x55555650c5d0) = 3834
[pid 3834] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3834] setpgid(0, 0) = 0
[pid 3834] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3834] write(3, "1000", 4) = 4
[pid 3834] close(3) = 0
[pid 3834] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 41.969450][ T3832] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3834] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3834] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3834] write(4, "37", 2) = 2
[pid 3834] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3834] exit_group(0) = ?
[pid 3834] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3834, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3835
./strace-static-x86_64: Process 3835 attached
[pid 3835] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3835] setpgid(0, 0) = 0
[pid 3835] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3835] write(3, "1000", 4) = 4
[pid 3835] close(3) = 0
[pid 3835] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 42.008926][ T3833] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3835] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3835] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3835] write(4, "37", 2) = 2
[pid 3835] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3835] exit_group(0) = ?
[pid 3835] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3835, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3836
./strace-static-x86_64: Process 3836 attached
[pid 3836] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3836] setpgid(0, 0) = 0
[pid 3836] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3836] write(3, "1000", 4) = 4
[pid 3836] close(3) = 0
[pid 3836] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3836] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3836] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3836] write(4, "37", 2) = 2
[pid 3836] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3836] exit_group(0) = ?
[pid 3836] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3836, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3837 attached
, child_tidptr=0x55555650c5d0) = 3837
[pid 3837] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3837] setpgid(0, 0) = 0
[pid 3837] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3837] write(3, "1000", 4) = 4
[pid 3837] close(3) = 0
[pid 3837] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3837] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3837] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3837] write(4, "37", 2) = 2
[pid 3837] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3837] exit_group(0) = ?
[pid 3837] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3837, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3838
./strace-static-x86_64: Process 3838 attached
[pid 3838] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3838] setpgid(0, 0) = 0
[pid 3838] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3838] write(3, "1000", 4) = 4
[pid 3838] close(3) = 0
[pid 3838] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3838] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 EBUSY (Device or resource busy)
[pid 3838] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3838] write(4, "37", 2) = 2
[pid 3838] ioctl(3, LOOP_CTL_ADD, 0) = -1 EEXIST (File exists)
[pid 3838] exit_group(0) = ?
[pid 3838] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3838, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3839 attached
, child_tidptr=0x55555650c5d0) = 3839
[pid 3839] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3839] setpgid(0, 0) = 0
[pid 3839] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3839] write(3, "1000", 4) = 4
[pid 3839] close(3) = 0
[pid 3839] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 42.136568][ T3836] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3839] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3839] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3839] write(4, "37", 2) = 2
[pid 3839] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3839] exit_group(0) = ?
[pid 3839] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3839, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3840
./strace-static-x86_64: Process 3840 attached
[pid 3840] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3840] setpgid(0, 0) = 0
[pid 3840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3840] write(3, "1000", 4) = 4
[pid 3840] close(3) = 0
[pid 3840] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3840] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3840] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3840] write(4, "37", 2) = 2
[pid 3840] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3840] exit_group(0) = ?
[pid 3840] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3840, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3841 attached
, child_tidptr=0x55555650c5d0) = 3841
[pid 3841] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3841] setpgid(0, 0) = 0
[pid 3841] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3841] write(3, "1000", 4) = 4
[pid 3841] close(3) = 0
[pid 3841] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 42.254224][ T3840] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3841] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3841] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3841] write(4, "37", 2) = 2
[pid 3841] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3841] exit_group(0) = ?
[pid 3841] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3841, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3842 attached
, child_tidptr=0x55555650c5d0) = 3842
[pid 3842] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3842] setpgid(0, 0) = 0
[pid 3842] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3842] write(3, "1000", 4) = 4
[pid 3842] close(3) = 0
[pid 3842] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3842] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3842] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3842] write(4, "37", 2) = 2
[pid 3842] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3842] exit_group(0) = ?
[pid 3842] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3842, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3843 attached
, child_tidptr=0x55555650c5d0) = 3843
[pid 3843] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3843] setpgid(0, 0) = 0
[pid 3843] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3843] write(3, "1000", 4) = 4
[pid 3843] close(3) = 0
[pid 3843] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3843] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3843] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3843] write(4, "37", 2) = 2
[pid 3843] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3843] exit_group(0) = ?
[pid 3843] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3843, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3844
./strace-static-x86_64: Process 3844 attached
[pid 3844] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3844] setpgid(0, 0) = 0
[pid 3844] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3844] write(3, "1000", 4) = 4
[pid 3844] close(3) = 0
[pid 3844] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3844] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3844] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3844] write(4, "37", 2) = 2
[pid 3844] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3844] exit_group(0) = ?
[pid 3844] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3844, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3845
./strace-static-x86_64: Process 3845 attached
[pid 3845] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3845] setpgid(0, 0) = 0
[pid 3845] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3845] write(3, "1000", 4) = 4
[pid 3845] close(3) = 0
[pid 3845] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3845] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3845] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3845] write(4, "37", 2) = 2
[pid 3845] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3845] exit_group(0) = ?
[pid 3845] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3845, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3846
./strace-static-x86_64: Process 3846 attached
[pid 3846] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3846] setpgid(0, 0) = 0
[pid 3846] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3846] write(3, "1000", 4) = 4
[pid 3846] close(3) = 0
[pid 3846] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3846] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3846] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3846] write(4, "37", 2) = 2
[pid 3846] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3846] exit_group(0) = ?
[pid 3846] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3846, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3847 attached
, child_tidptr=0x55555650c5d0) = 3847
[pid 3847] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3847] setpgid(0, 0) = 0
[pid 3847] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3847] write(3, "1000", 4) = 4
[pid 3847] close(3) = 0
[pid 3847] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3847] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3847] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3847] write(4, "37", 2) = 2
[pid 3847] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3847] exit_group(0) = ?
[pid 3847] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3847, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3848
./strace-static-x86_64: Process 3848 attached
[pid 3848] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3848] setpgid(0, 0) = 0
[pid 3848] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3848] write(3, "1000", 4) = 4
[pid 3848] close(3) = 0
[ 42.366187][ T3846] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3848] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3848] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3848] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3848] write(4, "37", 2) = 2
[pid 3848] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3848] exit_group(0) = ?
[pid 3848] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3848, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3849
./strace-static-x86_64: Process 3849 attached
[pid 3849] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3849] setpgid(0, 0) = 0
[pid 3849] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3849] write(3, "1000", 4) = 4
[pid 3849] close(3) = 0
[pid 3849] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3849] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3849] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3849] write(4, "37", 2) = 2
[pid 3849] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3849] exit_group(0) = ?
[pid 3849] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3849, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3850
./strace-static-x86_64: Process 3850 attached
[pid 3850] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3850] setpgid(0, 0) = 0
[pid 3850] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3850] write(3, "1000", 4) = 4
[pid 3850] close(3) = 0
[pid 3850] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3850] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3850] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3850] write(4, "37", 2) = 2
[ 42.419793][ T3847] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3850] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3850] exit_group(0) = ?
[pid 3850] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3850, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3851 attached
, child_tidptr=0x55555650c5d0) = 3851
[pid 3851] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3851] setpgid(0, 0) = 0
[pid 3851] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3851] write(3, "1000", 4) = 4
[pid 3851] close(3) = 0
[pid 3851] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3851] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3851] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3851] write(4, "37", 2) = 2
[pid 3851] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3851] exit_group(0) = ?
[pid 3851] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3851, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3852 attached
, child_tidptr=0x55555650c5d0) = 3852
[pid 3852] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3852] setpgid(0, 0) = 0
[pid 3852] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3852] write(3, "1000", 4) = 4
[pid 3852] close(3) = 0
[pid 3852] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3852] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3852] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3852] write(4, "37", 2) = 2
[pid 3852] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3852] exit_group(0) = ?
[pid 3852] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3852, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3853 attached
, child_tidptr=0x55555650c5d0) = 3853
[pid 3853] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3853] setpgid(0, 0) = 0
[pid 3853] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3853] write(3, "1000", 4) = 4
[pid 3853] close(3) = 0
[pid 3853] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3853] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3853] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3853] write(4, "37", 2) = 2
[pid 3853] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[ 42.539155][ T3851] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3853] exit_group(0) = ?
[pid 3853] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3853, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3854
./strace-static-x86_64: Process 3854 attached
[pid 3854] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3854] setpgid(0, 0) = 0
[pid 3854] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3854] write(3, "1000", 4) = 4
[pid 3854] close(3) = 0
[pid 3854] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3854] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3854] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3854] write(4, "37", 2) = 2
[pid 3854] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3854] exit_group(0) = ?
[pid 3854] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3854, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3855 attached
, child_tidptr=0x55555650c5d0) = 3855
[pid 3855] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3855] setpgid(0, 0) = 0
[pid 3855] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3855] write(3, "1000", 4) = 4
[pid 3855] close(3) = 0
[pid 3855] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3855] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3855] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3855] write(4, "37", 2) = 2
[pid 3855] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3855] exit_group(0) = ?
[pid 3855] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3855, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3856 attached
, child_tidptr=0x55555650c5d0) = 3856
[pid 3856] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3856] setpgid(0, 0) = 0
[pid 3856] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3856] write(3, "1000", 4) = 4
[pid 3856] close(3) = 0
[pid 3856] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3856] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3856] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3856] write(4, "37", 2) = 2
[pid 3856] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3856] exit_group(0) = ?
[pid 3856] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3856, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3857 attached
, child_tidptr=0x55555650c5d0) = 3857
[pid 3857] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3857] setpgid(0, 0) = 0
[pid 3857] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3857] write(3, "1000", 4) = 4
[pid 3857] close(3) = 0
[pid 3857] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3857] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3857] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3857] write(4, "37", 2) = 2
[pid 3857] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3857] exit_group(0) = ?
[pid 3857] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3857, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3858
./strace-static-x86_64: Process 3858 attached
[pid 3858] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3858] setpgid(0, 0) = 0
[pid 3858] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3858] write(3, "1000", 4) = 4
[pid 3858] close(3) = 0
[pid 3858] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3858] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3858] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3858] write(4, "37", 2) = 2
[pid 3858] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3858] exit_group(0) = ?
[pid 3858] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3858, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3859
./strace-static-x86_64: Process 3859 attached
[pid 3859] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3859] setpgid(0, 0) = 0
[pid 3859] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3859] write(3, "1000", 4) = 4
[pid 3859] close(3) = 0
[pid 3859] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3859] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3859] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3859] write(4, "37", 2) = 2
[pid 3859] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3859] exit_group(0) = ?
[pid 3859] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3859, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3860
./strace-static-x86_64: Process 3860 attached
[pid 3860] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3860] setpgid(0, 0) = 0
[pid 3860] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3860] write(3, "1000", 4) = 4
[pid 3860] close(3) = 0
[pid 3860] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3860] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3860] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3860] write(4, "37", 2) = 2
[pid 3860] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3860] exit_group(0) = ?
[pid 3860] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3860, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3861
./strace-static-x86_64: Process 3861 attached
[pid 3861] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3861] setpgid(0, 0) = 0
[pid 3861] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3861] write(3, "1000", 4) = 4
[pid 3861] close(3) = 0
[pid 3861] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 42.684828][ T3859] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3861] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3861] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3861] write(4, "37", 2) = 2
[pid 3861] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3861] exit_group(0) = ?
[pid 3861] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3861, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3862
./strace-static-x86_64: Process 3862 attached
[pid 3862] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3862] setpgid(0, 0) = 0
[pid 3862] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3862] write(3, "1000", 4) = 4
[pid 3862] close(3) = 0
[pid 3862] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3862] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3862] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3862] write(4, "37", 2) = 2
[pid 3862] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3862] exit_group(0) = ?
[pid 3862] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3862, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3863
./strace-static-x86_64: Process 3863 attached
[pid 3863] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3863] setpgid(0, 0) = 0
[pid 3863] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3863] write(3, "1000", 4) = 4
[pid 3863] close(3) = 0
[pid 3863] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3863] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3863] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3863] write(4, "37", 2) = 2
[pid 3863] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3863] exit_group(0) = ?
[pid 3863] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3863, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3864 attached
[pid 3864] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3864] setpgid(0, 0) = 0
[pid 3864] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3608] <... clone resumed>, child_tidptr=0x55555650c5d0) = 3864
[pid 3864] write(3, "1000", 4) = 4
[pid 3864] close(3) = 0
[pid 3864] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 42.729189][ T3860] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3864] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3864] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3864] write(4, "37", 2) = 2
[pid 3864] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3864] exit_group(0) = ?
[pid 3864] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3864, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3865
./strace-static-x86_64: Process 3865 attached
[pid 3865] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3865] setpgid(0, 0) = 0
[pid 3865] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3865] write(3, "1000", 4) = 4
[pid 3865] close(3) = 0
[pid 3865] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3865] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3865] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3865] write(4, "37", 2) = 2
[pid 3865] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3865] exit_group(0) = ?
[pid 3865] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3865, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3866 attached
, child_tidptr=0x55555650c5d0) = 3866
[pid 3866] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3866] setpgid(0, 0) = 0
[pid 3866] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3866] write(3, "1000", 4) = 4
[pid 3866] close(3) = 0
[pid 3866] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3866] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3866] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3866] write(4, "37", 2) = 2
[pid 3866] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3866] exit_group(0) = ?
[pid 3866] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3866, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3867 attached
, child_tidptr=0x55555650c5d0) = 3867
[pid 3867] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3867] setpgid(0, 0) = 0
[pid 3867] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3867] write(3, "1000", 4) = 4
[pid 3867] close(3) = 0
[pid 3867] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3867] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3867] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3867] write(4, "37", 2) = 2
[ 42.826183][ T3865] debugfs: Directory 'loop0' with parent 'block' already present!
[ 42.859925][ T3866] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3867] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3867] exit_group(0) = ?
[pid 3867] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3867, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3868
./strace-static-x86_64: Process 3868 attached
[pid 3868] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3868] setpgid(0, 0) = 0
[pid 3868] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3868] write(3, "1000", 4) = 4
[pid 3868] close(3) = 0
[pid 3868] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3868] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3868] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3868] write(4, "37", 2) = 2
[pid 3868] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3868] exit_group(0) = ?
[pid 3868] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3868, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3869
./strace-static-x86_64: Process 3869 attached
[pid 3869] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3869] setpgid(0, 0) = 0
[pid 3869] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3869] write(3, "1000", 4) = 4
[pid 3869] close(3) = 0
[pid 3869] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3869] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3869] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3869] write(4, "37", 2) = 2
[pid 3869] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3869] exit_group(0) = ?
[pid 3869] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3869, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3870
./strace-static-x86_64: Process 3870 attached
[pid 3870] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3870] setpgid(0, 0) = 0
[pid 3870] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3870] write(3, "1000", 4) = 4
[pid 3870] close(3) = 0
[pid 3870] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3870] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3870] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3870] write(4, "37", 2) = 2
[pid 3870] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3870] exit_group(0) = ?
[pid 3870] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3870, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3871
./strace-static-x86_64: Process 3871 attached
[pid 3871] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3871] setpgid(0, 0) = 0
[pid 3871] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3871] write(3, "1000", 4) = 4
[pid 3871] close(3) = 0
[pid 3871] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3871] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3871] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3871] write(4, "37", 2) = 2
[pid 3871] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3871] exit_group(0) = ?
[pid 3871] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3871, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3872 attached
, child_tidptr=0x55555650c5d0) = 3872
[pid 3872] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3872] setpgid(0, 0) = 0
[pid 3872] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3872] write(3, "1000", 4) = 4
[pid 3872] close(3) = 0
[pid 3872] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3872] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3872] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3872] write(4, "37", 2) = 2
[pid 3872] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3872] exit_group(0) = ?
[pid 3872] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3872, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3873
./strace-static-x86_64: Process 3873 attached
[pid 3873] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3873] setpgid(0, 0) = 0
[pid 3873] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3873] write(3, "1000", 4) = 4
[pid 3873] close(3) = 0
[pid 3873] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3873] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3873] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3873] write(4, "37", 2) = 2
[pid 3873] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3873] exit_group(0) = ?
[pid 3873] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3873, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3874
./strace-static-x86_64: Process 3874 attached
[pid 3874] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3874] setpgid(0, 0) = 0
[pid 3874] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3874] write(3, "1000", 4) = 4
[pid 3874] close(3) = 0
[pid 3874] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 42.970448][ T3872] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3874] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3874] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3874] write(4, "37", 2) = 2
[pid 3874] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3874] exit_group(0) = ?
[pid 3874] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3874, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3875 attached
, child_tidptr=0x55555650c5d0) = 3875
[pid 3875] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3875] setpgid(0, 0) = 0
[pid 3875] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3875] write(3, "1000", 4) = 4
[pid 3875] close(3) = 0
[pid 3875] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3875] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3875] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3875] write(4, "37", 2) = 2
[pid 3875] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3875] exit_group(0) = ?
[pid 3875] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3875, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3876 attached
, child_tidptr=0x55555650c5d0) = 3876
[pid 3876] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3876] setpgid(0, 0) = 0
[pid 3876] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3876] write(3, "1000", 4) = 4
[pid 3876] close(3) = 0
[pid 3876] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 43.029163][ T3873] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3876] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3876] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3876] write(4, "37", 2) = 2
[pid 3876] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3876] exit_group(0) = ?
[pid 3876] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3876, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3877
./strace-static-x86_64: Process 3877 attached
[pid 3877] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3877] setpgid(0, 0) = 0
[pid 3877] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3877] write(3, "1000", 4) = 4
[pid 3877] close(3) = 0
[pid 3877] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3877] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3877] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3877] write(4, "37", 2) = 2
[pid 3877] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3877] exit_group(0) = ?
[pid 3877] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3877, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3878 attached
, child_tidptr=0x55555650c5d0) = 3878
[pid 3878] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3878] setpgid(0, 0) = 0
[pid 3878] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3878] write(3, "1000", 4) = 4
[pid 3878] close(3) = 0
[pid 3878] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3878] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3878] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3878] write(4, "37", 2) = 2
[pid 3878] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3878] exit_group(0) = ?
[pid 3878] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3878, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3879 attached
, child_tidptr=0x55555650c5d0) = 3879
[pid 3879] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3879] setpgid(0, 0) = 0
[pid 3879] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3879] write(3, "1000", 4) = 4
[pid 3879] close(3) = 0
[pid 3879] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3879] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3879] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3879] write(4, "37", 2) = 2
[pid 3879] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3879] exit_group(0) = ?
[pid 3879] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3879, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3880
./strace-static-x86_64: Process 3880 attached
[pid 3880] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3880] setpgid(0, 0) = 0
[pid 3880] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3880] write(3, "1000", 4) = 4
[pid 3880] close(3) = 0
[pid 3880] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3880] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3880] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3880] write(4, "37", 2) = 2
[pid 3880] ioctl(3, LOOP_CTL_ADD, 0) = 0
[ 43.155257][ T3878] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3880] exit_group(0) = ?
[pid 3880] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3880, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3881
./strace-static-x86_64: Process 3881 attached
[pid 3881] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3881] setpgid(0, 0) = 0
[pid 3881] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3881] write(3, "1000", 4) = 4
[pid 3881] close(3) = 0
[pid 3881] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3881] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3881] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3881] write(4, "37", 2) = 2
[pid 3881] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3881] exit_group(0) = ?
[pid 3881] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3881, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3882
./strace-static-x86_64: Process 3882 attached
[pid 3882] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3882] setpgid(0, 0) = 0
[pid 3882] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3882] write(3, "1000", 4) = 4
[pid 3882] close(3) = 0
[pid 3882] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 43.214950][ T3880] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3882] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3882] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3882] write(4, "37", 2) = 2
[pid 3882] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3882] exit_group(0) = ?
[pid 3882] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3882, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3883 attached
, child_tidptr=0x55555650c5d0) = 3883
[pid 3883] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3883] setpgid(0, 0) = 0
[pid 3883] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3883] write(3, "1000", 4) = 4
[pid 3883] close(3) = 0
[pid 3883] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3883] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[ 43.320085][ T3882] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3883] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3883] write(4, "37", 2) = 2
[pid 3883] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3883] exit_group(0) = ?
[pid 3883] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3883, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3884
./strace-static-x86_64: Process 3884 attached
[pid 3884] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3884] setpgid(0, 0) = 0
[pid 3884] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3884] write(3, "1000", 4) = 4
[pid 3884] close(3) = 0
[pid 3884] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3884] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3884] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3884] write(4, "37", 2) = 2
[pid 3884] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3884] exit_group(0) = ?
[pid 3884] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3884, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3885
./strace-static-x86_64: Process 3885 attached
[pid 3885] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3885] setpgid(0, 0) = 0
[pid 3885] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3885] write(3, "1000", 4) = 4
[pid 3885] close(3) = 0
[pid 3885] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3885] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3885] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3885] write(4, "37", 2) = 2
[pid 3885] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3885] exit_group(0) = ?
[pid 3885] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3885, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3886
./strace-static-x86_64: Process 3886 attached
[pid 3886] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3886] setpgid(0, 0) = 0
[pid 3886] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3886] write(3, "1000", 4) = 4
[pid 3886] close(3) = 0
[pid 3886] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3886] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 EBUSY (Device or resource busy)
[pid 3886] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3886] write(4, "37", 2) = 2
[pid 3886] ioctl(3, LOOP_CTL_ADD, 0) = -1 EEXIST (File exists)
[pid 3886] exit_group(0) = ?
[pid 3886] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3886, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3887 attached
, child_tidptr=0x55555650c5d0) = 3887
[pid 3887] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3887] setpgid(0, 0) = 0
[pid 3887] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3887] write(3, "1000", 4) = 4
[pid 3887] close(3) = 0
[pid 3887] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3887] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3887] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3887] write(4, "37", 2) = 2
[pid 3887] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3887] exit_group(0) = ?
[pid 3887] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3887, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3888
./strace-static-x86_64: Process 3888 attached
[pid 3888] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3888] setpgid(0, 0) = 0
[pid 3888] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3888] write(3, "1000", 4) = 4
[pid 3888] close(3) = 0
[pid 3888] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 43.459296][ T3885] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3888] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3888] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3888] write(4, "37", 2) = 2
[pid 3888] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3888] exit_group(0) = ?
[pid 3888] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3888, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3889
./strace-static-x86_64: Process 3889 attached
[pid 3889] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3889] setpgid(0, 0) = 0
[pid 3889] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3889] write(3, "1000", 4) = 4
[pid 3889] close(3) = 0
[pid 3889] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 43.509900][ T3887] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3889] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3889] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3889] write(4, "37", 2) = 2
[pid 3889] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3889] exit_group(0) = ?
[pid 3889] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3889, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3890
./strace-static-x86_64: Process 3890 attached
[pid 3890] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3890] setpgid(0, 0) = 0
[pid 3890] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3890] write(3, "1000", 4) = 4
[pid 3890] close(3) = 0
[pid 3890] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3890] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3890] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3890] write(4, "37", 2) = 2
[pid 3890] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3890] exit_group(0) = ?
[pid 3890] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3890, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3891 attached
, child_tidptr=0x55555650c5d0) = 3891
[pid 3891] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3891] setpgid(0, 0) = 0
[pid 3891] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3891] write(3, "1000", 4) = 4
[pid 3891] close(3) = 0
[pid 3891] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3891] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3891] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3891] write(4, "37", 2) = 2
[pid 3891] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3891] exit_group(0) = ?
[pid 3891] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3891, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3892
./strace-static-x86_64: Process 3892 attached
[pid 3892] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3892] setpgid(0, 0) = 0
[pid 3892] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3892] write(3, "1000", 4) = 4
[pid 3892] close(3) = 0
[pid 3892] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3892] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3892] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3892] write(4, "37", 2) = 2
[pid 3892] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3892] exit_group(0) = ?
[pid 3892] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3892, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3893
./strace-static-x86_64: Process 3893 attached
[pid 3893] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3893] setpgid(0, 0) = 0
[pid 3893] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3893] write(3, "1000", 4) = 4
[pid 3893] close(3) = 0
[pid 3893] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3893] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3893] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3893] write(4, "37", 2) = 2
[ 43.619497][ T3889] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3893] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3893] exit_group(0) = ?
[pid 3893] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3893, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3894
./strace-static-x86_64: Process 3894 attached
[pid 3894] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3894] setpgid(0, 0) = 0
[pid 3894] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3894] write(3, "1000", 4) = 4
[pid 3894] close(3) = 0
[pid 3894] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3894] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3894] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3894] write(4, "37", 2) = 2
[pid 3894] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3894] exit_group(0) = ?
[pid 3894] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3894, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3895
./strace-static-x86_64: Process 3895 attached
[pid 3895] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3895] setpgid(0, 0) = 0
[pid 3895] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3895] write(3, "1000", 4) = 4
[pid 3895] close(3) = 0
[pid 3895] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3895] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3895] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3895] write(4, "37", 2) = 2
[pid 3895] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3895] exit_group(0) = ?
[pid 3895] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3895, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3896
./strace-static-x86_64: Process 3896 attached
[pid 3896] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3896] setpgid(0, 0) = 0
[pid 3896] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3896] write(3, "1000", 4) = 4
[pid 3896] close(3) = 0
[pid 3896] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 43.687206][ T3893] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3896] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3896] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3896] write(4, "37", 2) = 2
[pid 3896] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3896] exit_group(0) = ?
[pid 3896] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3896, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3897 attached
, child_tidptr=0x55555650c5d0) = 3897
[pid 3897] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3897] setpgid(0, 0) = 0
[pid 3897] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3897] write(3, "1000", 4) = 4
[pid 3897] close(3) = 0
[pid 3897] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3897] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3897] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3897] write(4, "37", 2) = 2
[pid 3897] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3897] exit_group(0) = ?
[pid 3897] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3897, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3898
./strace-static-x86_64: Process 3898 attached
[pid 3898] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3898] setpgid(0, 0) = 0
[pid 3898] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3898] write(3, "1000", 4) = 4
[pid 3898] close(3) = 0
[pid 3898] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3898] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3898] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3898] write(4, "37", 2) = 2
[pid 3898] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3898] exit_group(0) = ?
[pid 3898] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3898, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3899
./strace-static-x86_64: Process 3899 attached
[pid 3899] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3899] setpgid(0, 0) = 0
[pid 3899] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3899] write(3, "1000", 4) = 4
[pid 3899] close(3) = 0
[pid 3899] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3899] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3899] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3899] write(4, "37", 2) = 2
[pid 3899] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3899] exit_group(0) = ?
[pid 3899] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3899, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3900
./strace-static-x86_64: Process 3900 attached
[pid 3900] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3900] setpgid(0, 0) = 0
[pid 3900] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3900] write(3, "1000", 4) = 4
[pid 3900] close(3) = 0
[pid 3900] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 43.807351][ T3898] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3900] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3900] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3900] write(4, "37", 2) = 2
[pid 3900] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3900] exit_group(0) = ?
[pid 3900] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3900, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3901 attached
, child_tidptr=0x55555650c5d0) = 3901
[pid 3901] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3901] setpgid(0, 0) = 0
[pid 3901] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3901] write(3, "1000", 4) = 4
[pid 3901] close(3) = 0
[pid 3901] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3901] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3901] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3901] write(4, "37", 2) = 2
[pid 3901] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3901] exit_group(0) = ?
[ 43.849834][ T3899] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3901] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3901, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3902 attached
, child_tidptr=0x55555650c5d0) = 3902
[pid 3902] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3902] setpgid(0, 0) = 0
[pid 3902] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3902] write(3, "1000", 4) = 4
[pid 3902] close(3) = 0
[pid 3902] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3902] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3902] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3902] write(4, "37", 2) = 2
[pid 3902] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3902] exit_group(0) = ?
[pid 3902] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3902, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3903
./strace-static-x86_64: Process 3903 attached
[pid 3903] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3903] setpgid(0, 0) = 0
[pid 3903] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3903] write(3, "1000", 4) = 4
[pid 3903] close(3) = 0
[pid 3903] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3903] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3903] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3903] write(4, "37", 2) = 2
[pid 3903] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3903] exit_group(0) = ?
[pid 3903] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3903, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3904
./strace-static-x86_64: Process 3904 attached
[pid 3904] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3904] setpgid(0, 0) = 0
[pid 3904] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3904] write(3, "1000", 4) = 4
[pid 3904] close(3) = 0
[pid 3904] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3904] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3904] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3904] write(4, "37", 2) = 2
[pid 3904] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3904] exit_group(0) = ?
[pid 3904] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3904, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3905 attached
, child_tidptr=0x55555650c5d0) = 3905
[pid 3905] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3905] setpgid(0, 0) = 0
[pid 3905] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3905] write(3, "1000", 4) = 4
[pid 3905] close(3) = 0
[pid 3905] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3905] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3905] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3905] write(4, "37", 2) = 2
[pid 3905] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3905] exit_group(0) = ?
[pid 3905] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3905, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
[ 43.988251][ T3904] debugfs: Directory 'loop0' with parent 'block' already present!
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3906 attached
[pid 3906] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3906] setpgid(0, 0) = 0
[pid 3906] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3906] write(3, "1000", 4) = 4
[pid 3906] close(3) = 0
[pid 3906] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3906] ioctl(3, LOOP_CTL_REMOVE, 0
[pid 3608] <... clone resumed>, child_tidptr=0x55555650c5d0) = 3906
[pid 3906] <... ioctl resumed>) = 0
[pid 3906] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3906] write(4, "37", 2) = 2
[pid 3906] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3906] exit_group(0) = ?
[pid 3906] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3906, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3907 attached
[pid 3907] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3907] setpgid(0, 0) = 0
[pid 3907] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3907] write(3, "1000", 4) = 4
[pid 3907] close(3) = 0
[pid 3907] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3907] ioctl(3, LOOP_CTL_REMOVE, 0
[pid 3608] <... clone resumed>, child_tidptr=0x55555650c5d0) = 3907
[pid 3907] <... ioctl resumed>) = 0
[ 44.029706][ T3905] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3907] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3907] write(4, "37", 2) = 2
[pid 3907] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3907] exit_group(0) = ?
[pid 3907] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3907, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3908
./strace-static-x86_64: Process 3908 attached
[pid 3908] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3908] setpgid(0, 0) = 0
[pid 3908] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3908] write(3, "1000", 4) = 4
[pid 3908] close(3) = 0
[pid 3908] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3908] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3908] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3908] write(4, "37", 2) = 2
[pid 3908] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3908] exit_group(0) = ?
[pid 3908] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3908, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3909 attached
, child_tidptr=0x55555650c5d0) = 3909
[pid 3909] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3909] setpgid(0, 0) = 0
[pid 3909] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3909] write(3, "1000", 4) = 4
[pid 3909] close(3) = 0
[pid 3909] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3909] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[ 44.106350][ T3908] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3909] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3909] write(4, "37", 2) = 2
[pid 3909] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3909] exit_group(0) = ?
[pid 3909] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3909, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3910
./strace-static-x86_64: Process 3910 attached
[pid 3910] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3910] setpgid(0, 0) = 0
[pid 3910] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3910] write(3, "1000", 4) = 4
[pid 3910] close(3) = 0
[pid 3910] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3910] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3910] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3910] write(4, "37", 2) = 2
[pid 3910] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3910] exit_group(0) = ?
[pid 3910] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3910, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3911
./strace-static-x86_64: Process 3911 attached
[pid 3911] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3911] setpgid(0, 0) = 0
[pid 3911] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3911] write(3, "1000", 4) = 4
[pid 3911] close(3) = 0
[pid 3911] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3911] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3911] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3911] write(4, "37", 2) = 2
[pid 3911] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3911] exit_group(0) = ?
[pid 3911] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3911, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3912
./strace-static-x86_64: Process 3912 attached
[pid 3912] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3912] setpgid(0, 0) = 0
[pid 3912] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3912] write(3, "1000", 4) = 4
[pid 3912] close(3) = 0
[pid 3912] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3912] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3912] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3912] write(4, "37", 2) = 2
[pid 3912] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3912] exit_group(0) = ?
[pid 3912] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3912, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3913
./strace-static-x86_64: Process 3913 attached
[pid 3913] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3913] setpgid(0, 0) = 0
[pid 3913] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3913] write(3, "1000", 4) = 4
[pid 3913] close(3) = 0
[pid 3913] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3913] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3913] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3913] write(4, "37", 2) = 2
[pid 3913] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3913] exit_group(0) = ?
[pid 3913] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3913, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3914 attached
, child_tidptr=0x55555650c5d0) = 3914
[pid 3914] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3914] setpgid(0, 0) = 0
[pid 3914] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3914] write(3, "1000", 4) = 4
[pid 3914] close(3) = 0
[pid 3914] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3914] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3914] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3914] write(4, "37", 2) = 2
[pid 3914] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3914] exit_group(0) = ?
[pid 3914] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3914, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3915
./strace-static-x86_64: Process 3915 attached
[pid 3915] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3915] setpgid(0, 0) = 0
[pid 3915] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3915] write(3, "1000", 4) = 4
[pid 3915] close(3) = 0
[pid 3915] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3915] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3915] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3915] write(4, "37", 2) = 2
[pid 3915] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3915] exit_group(0) = ?
[pid 3915] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3915, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3916
./strace-static-x86_64: Process 3916 attached
[pid 3916] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3916] setpgid(0, 0) = 0
[pid 3916] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3916] write(3, "1000", 4) = 4
[pid 3916] close(3) = 0
[pid 3916] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3916] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3916] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3916] write(4, "37", 2) = 2
[pid 3916] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3916] exit_group(0) = ?
[pid 3916] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3916, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3917
./strace-static-x86_64: Process 3917 attached
[pid 3917] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3917] setpgid(0, 0) = 0
[pid 3917] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3917] write(3, "1000", 4) = 4
[pid 3917] close(3) = 0
[pid 3917] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3917] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3917] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3917] write(4, "37", 2) = 2
[pid 3917] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3917] exit_group(0) = ?
[pid 3917] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3917, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3918
./strace-static-x86_64: Process 3918 attached
[pid 3918] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3918] setpgid(0, 0) = 0
[pid 3918] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3918] write(3, "1000", 4) = 4
[pid 3918] close(3) = 0
[pid 3918] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3918] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3918] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3918] write(4, "37", 2) = 2
[pid 3918] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3918] exit_group(0) = ?
[pid 3918] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3918, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3919
./strace-static-x86_64: Process 3919 attached
[pid 3919] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3919] setpgid(0, 0) = 0
[pid 3919] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3919] write(3, "1000", 4) = 4
[pid 3919] close(3) = 0
[pid 3919] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3919] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3919] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3919] write(4, "37", 2) = 2
[pid 3919] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3919] exit_group(0) = ?
[pid 3919] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3919, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3920
./strace-static-x86_64: Process 3920 attached
[pid 3920] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3920] setpgid(0, 0) = 0
[pid 3920] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3920] write(3, "1000", 4) = 4
[pid 3920] close(3) = 0
[pid 3920] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 44.247663][ T3916] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3920] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3920] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3920] write(4, "37", 2) = 2
[pid 3920] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3920] exit_group(0) = ?
[pid 3920] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3920, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3921
./strace-static-x86_64: Process 3921 attached
[pid 3921] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3921] setpgid(0, 0) = 0
[pid 3921] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3921] write(3, "1000", 4) = 4
[pid 3921] close(3) = 0
[pid 3921] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3921] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3921] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3921] write(4, "37", 2) = 2
[pid 3921] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3921] exit_group(0) = ?
[pid 3921] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3921, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3922
./strace-static-x86_64: Process 3922 attached
[pid 3922] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3922] setpgid(0, 0) = 0
[pid 3922] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3922] write(3, "1000", 4) = 4
[pid 3922] close(3) = 0
[pid 3922] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3922] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3922] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3922] write(4, "37", 2) = 2
[pid 3922] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3922] exit_group(0) = ?
[pid 3922] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3922, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3923
./strace-static-x86_64: Process 3923 attached
[pid 3923] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3923] setpgid(0, 0) = 0
[pid 3923] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3923] write(3, "1000", 4) = 4
[pid 3923] close(3) = 0
[pid 3923] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 44.339473][ T3920] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3923] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3923] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3923] write(4, "37", 2) = 2
[pid 3923] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3923] exit_group(0) = ?
[pid 3923] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3923, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3924
./strace-static-x86_64: Process 3924 attached
[pid 3924] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3924] setpgid(0, 0) = 0
[pid 3924] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3924] write(3, "1000", 4) = 4
[pid 3924] close(3) = 0
[pid 3924] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 44.388676][ T3922] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3924] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3924] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3924] write(4, "37", 2) = 2
[pid 3924] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3924] exit_group(0) = ?
[pid 3924] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3924, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3925
./strace-static-x86_64: Process 3925 attached
[pid 3925] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3925] setpgid(0, 0) = 0
[pid 3925] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3925] write(3, "1000", 4) = 4
[pid 3925] close(3) = 0
[pid 3925] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3925] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3925] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3925] write(4, "37", 2) = 2
[pid 3925] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3925] exit_group(0) = ?
[pid 3925] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3925, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3926
./strace-static-x86_64: Process 3926 attached
[pid 3926] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3926] setpgid(0, 0) = 0
[pid 3926] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3926] write(3, "1000", 4) = 4
[pid 3926] close(3) = 0
[pid 3926] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3926] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3926] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3926] write(4, "37", 2) = 2
[pid 3926] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3926] exit_group(0) = ?
[ 44.480151][ T3924] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3926] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3926, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3927 attached
, child_tidptr=0x55555650c5d0) = 3927
[pid 3927] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3927] setpgid(0, 0) = 0
[pid 3927] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3927] write(3, "1000", 4) = 4
[pid 3927] close(3) = 0
[pid 3927] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 44.534415][ T3926] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3927] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3927] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3927] write(4, "37", 2) = 2
[pid 3927] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3927] exit_group(0) = ?
[pid 3927] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3927, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3928
./strace-static-x86_64: Process 3928 attached
[pid 3928] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3928] setpgid(0, 0) = 0
[pid 3928] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3928] write(3, "1000", 4) = 4
[pid 3928] close(3) = 0
[pid 3928] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3928] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3928] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3928] write(4, "37", 2) = 2
[pid 3928] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3928] exit_group(0) = ?
[pid 3928] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3928, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3929
./strace-static-x86_64: Process 3929 attached
[pid 3929] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3929] setpgid(0, 0) = 0
[pid 3929] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3929] write(3, "1000", 4) = 4
[pid 3929] close(3) = 0
[pid 3929] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3929] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3929] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3929] write(4, "37", 2) = 2
[pid 3929] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3929] exit_group(0) = ?
[pid 3929] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3929, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3930
./strace-static-x86_64: Process 3930 attached
[pid 3930] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3930] setpgid(0, 0) = 0
[pid 3930] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3930] write(3, "1000", 4) = 4
[pid 3930] close(3) = 0
[pid 3930] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3930] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3930] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3930] write(4, "37", 2) = 2
[pid 3930] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3930] exit_group(0) = ?
[pid 3930] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3930, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3931
./strace-static-x86_64: Process 3931 attached
[pid 3931] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3931] setpgid(0, 0) = 0
[pid 3931] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3931] write(3, "1000", 4) = 4
[pid 3931] close(3) = 0
[pid 3931] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3931] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3931] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3931] write(4, "37", 2) = 2
[pid 3931] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3931] exit_group(0) = ?
[pid 3931] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3931, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3932
./strace-static-x86_64: Process 3932 attached
[pid 3932] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3932] setpgid(0, 0) = 0
[pid 3932] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3932] write(3, "1000", 4) = 4
[pid 3932] close(3) = 0
[pid 3932] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3932] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3932] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3932] write(4, "37", 2) = 2
[pid 3932] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3932] exit_group(0) = ?
[pid 3932] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3932, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3933
./strace-static-x86_64: Process 3933 attached
[pid 3933] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3933] setpgid(0, 0) = 0
[pid 3933] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3933] write(3, "1000", 4) = 4
[pid 3933] close(3) = 0
[pid 3933] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3933] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3933] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3933] write(4, "37", 2) = 2
[pid 3933] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3933] exit_group(0) = ?
[pid 3933] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3933, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3934
./strace-static-x86_64: Process 3934 attached
[pid 3934] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3934] setpgid(0, 0) = 0
[pid 3934] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3934] write(3, "1000", 4) = 4
[pid 3934] close(3) = 0
[pid 3934] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3934] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3934] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3934] write(4, "37", 2) = 2
[pid 3934] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3934] exit_group(0) = ?
[pid 3934] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3934, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3935 attached
[pid 3935] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3935] setpgid(0, 0) = 0
[pid 3608] <... clone resumed>, child_tidptr=0x55555650c5d0) = 3935
[pid 3935] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3935] write(3, "1000", 4) = 4
[pid 3935] close(3) = 0
[pid 3935] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3935] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3935] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3935] write(4, "37", 2) = 2
[pid 3935] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3935] exit_group(0) = ?
[pid 3935] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3935, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3936
./strace-static-x86_64: Process 3936 attached
[pid 3936] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3936] setpgid(0, 0) = 0
[pid 3936] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3936] write(3, "1000", 4) = 4
[pid 3936] close(3) = 0
[pid 3936] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3936] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3936] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3936] write(4, "37", 2) = 2
[pid 3936] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3936] exit_group(0) = ?
[pid 3936] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3936, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3937 attached
, child_tidptr=0x55555650c5d0) = 3937
[pid 3937] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3937] setpgid(0, 0) = 0
[pid 3937] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3937] write(3, "1000", 4) = 4
[pid 3937] close(3) = 0
[pid 3937] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3937] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3937] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3937] write(4, "37", 2) = 2
[pid 3937] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3937] exit_group(0) = ?
[pid 3937] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3937, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3938
./strace-static-x86_64: Process 3938 attached
[pid 3938] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3938] setpgid(0, 0) = 0
[pid 3938] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3938] write(3, "1000", 4) = 4
[pid 3938] close(3) = 0
[pid 3938] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3938] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3938] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3938] write(4, "37", 2) = 2
[pid 3938] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3938] exit_group(0) = ?
[pid 3938] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3938, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3939
./strace-static-x86_64: Process 3939 attached
[pid 3939] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3939] setpgid(0, 0) = 0
[pid 3939] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3939] write(3, "1000", 4) = 4
[pid 3939] close(3) = 0
[pid 3939] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3939] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3939] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3939] write(4, "37", 2) = 2
[pid 3939] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3939] exit_group(0) = ?
[pid 3939] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3939, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3940
./strace-static-x86_64: Process 3940 attached
[pid 3940] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3940] setpgid(0, 0) = 0
[pid 3940] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3940] write(3, "1000", 4) = 4
[pid 3940] close(3) = 0
[pid 3940] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3940] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3940] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3940] write(4, "37", 2) = 2
[pid 3940] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3940] exit_group(0) = ?
[pid 3940] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3940, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3941
./strace-static-x86_64: Process 3941 attached
[pid 3941] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3941] setpgid(0, 0) = 0
[pid 3941] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[ 44.696759][ T3935] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3941] write(3, "1000", 4) = 4
[pid 3941] close(3) = 0
[pid 3941] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3941] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3941] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3941] write(4, "37", 2) = 2
[pid 3941] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3941] exit_group(0) = ?
[pid 3941] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3941, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3942 attached
, child_tidptr=0x55555650c5d0) = 3942
[pid 3942] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3942] setpgid(0, 0) = 0
[pid 3942] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3942] write(3, "1000", 4) = 4
[pid 3942] close(3) = 0
[pid 3942] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3942] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3942] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3942] write(4, "37", 2) = 2
[pid 3942] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3942] exit_group(0) = ?
[pid 3942] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3942, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3943
./strace-static-x86_64: Process 3943 attached
[pid 3943] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3943] setpgid(0, 0) = 0
[pid 3943] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3943] write(3, "1000", 4) = 4
[pid 3943] close(3) = 0
[pid 3943] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 44.806038][ T3942] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3943] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3943] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3943] write(4, "37", 2) = 2
[pid 3943] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3943] exit_group(0) = ?
[pid 3943] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3943, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3944 attached
, child_tidptr=0x55555650c5d0) = 3944
[pid 3944] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3944] setpgid(0, 0) = 0
[pid 3944] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3944] write(3, "1000", 4) = 4
[pid 3944] close(3) = 0
[pid 3944] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3944] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3944] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3944] write(4, "37", 2) = 2
[pid 3944] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3944] exit_group(0) = ?
[pid 3944] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3944, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3945
./strace-static-x86_64: Process 3945 attached
[pid 3945] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3945] setpgid(0, 0) = 0
[pid 3945] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3945] write(3, "1000", 4) = 4
[pid 3945] close(3) = 0
[pid 3945] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3945] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3945] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3945] write(4, "37", 2) = 2
[pid 3945] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3945] exit_group(0) = ?
[pid 3945] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3945, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3946
./strace-static-x86_64: Process 3946 attached
[pid 3946] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3946] setpgid(0, 0) = 0
[pid 3946] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3946] write(3, "1000", 4) = 4
[pid 3946] close(3) = 0
[pid 3946] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3946] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3946] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3946] write(4, "37", 2) = 2
[pid 3946] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3946] exit_group(0) = ?
[pid 3946] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3946, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3947 attached
, child_tidptr=0x55555650c5d0) = 3947
[pid 3947] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3947] setpgid(0, 0) = 0
[pid 3947] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3947] write(3, "1000", 4) = 4
[pid 3947] close(3) = 0
[pid 3947] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3947] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3947] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3947] write(4, "37", 2) = 2
[pid 3947] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3947] exit_group(0) = ?
[pid 3947] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3947, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3948 attached
, child_tidptr=0x55555650c5d0) = 3948
[pid 3948] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3948] setpgid(0, 0) = 0
[pid 3948] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3948] write(3, "1000", 4) = 4
[pid 3948] close(3) = 0
[pid 3948] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3948] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3948] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3948] write(4, "37", 2) = 2
[pid 3948] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3948] exit_group(0) = ?
[pid 3948] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3948, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3949
./strace-static-x86_64: Process 3949 attached
[pid 3949] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3949] setpgid(0, 0) = 0
[pid 3949] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3949] write(3, "1000", 4) = 4
[pid 3949] close(3) = 0
[pid 3949] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3949] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3949] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3949] write(4, "37", 2) = 2
[pid 3949] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3949] exit_group(0) = ?
[pid 3949] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3949, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3950
./strace-static-x86_64: Process 3950 attached
[pid 3950] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3950] setpgid(0, 0) = 0
[pid 3950] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3950] write(3, "1000", 4) = 4
[pid 3950] close(3) = 0
[pid 3950] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3950] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3950] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3950] write(4, "37", 2) = 2
[pid 3950] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3950] exit_group(0) = ?
[pid 3950] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3950, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3951
./strace-static-x86_64: Process 3951 attached
[ 44.964765][ T3948] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3951] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3951] setpgid(0, 0) = 0
[pid 3951] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3951] write(3, "1000", 4) = 4
[pid 3951] close(3) = 0
[pid 3951] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3951] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3951] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3951] write(4, "37", 2) = 2
[pid 3951] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3951] exit_group(0) = ?
[pid 3951] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3951, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3952
./strace-static-x86_64: Process 3952 attached
[pid 3952] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3952] setpgid(0, 0) = 0
[pid 3952] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3952] write(3, "1000", 4) = 4
[pid 3952] close(3) = 0
[pid 3952] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3952] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3952] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3952] write(4, "37", 2) = 2
[pid 3952] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3952] exit_group(0) = ?
[pid 3952] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3952, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3953
./strace-static-x86_64: Process 3953 attached
[pid 3953] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3953] setpgid(0, 0) = 0
[pid 3953] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3953] write(3, "1000", 4) = 4
[pid 3953] close(3) = 0
[pid 3953] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3953] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3953] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3953] write(4, "37", 2) = 2
[pid 3953] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3953] exit_group(0) = ?
[pid 3953] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3953, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3954
./strace-static-x86_64: Process 3954 attached
[pid 3954] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3954] setpgid(0, 0) = 0
[pid 3954] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3954] write(3, "1000", 4) = 4
[pid 3954] close(3) = 0
[pid 3954] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3954] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3954] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3954] write(4, "37", 2) = 2
[pid 3954] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3954] exit_group(0) = ?
[pid 3954] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3954, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3955
./strace-static-x86_64: Process 3955 attached
[pid 3955] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3955] setpgid(0, 0) = 0
[pid 3955] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3955] write(3, "1000", 4) = 4
[pid 3955] close(3) = 0
[pid 3955] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3955] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3955] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3955] write(4, "37", 2) = 2
[pid 3955] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3955] exit_group(0) = ?
[ 45.078381][ T3953] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3955] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3955, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3956
./strace-static-x86_64: Process 3956 attached
[pid 3956] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3956] setpgid(0, 0) = 0
[pid 3956] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3956] write(3, "1000", 4) = 4
[pid 3956] close(3) = 0
[pid 3956] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3956] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3956] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3956] write(4, "37", 2) = 2
[pid 3956] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3956] exit_group(0) = ?
[pid 3956] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3956, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3957
./strace-static-x86_64: Process 3957 attached
[pid 3957] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3957] setpgid(0, 0) = 0
[pid 3957] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3957] write(3, "1000", 4) = 4
[pid 3957] close(3) = 0
[pid 3957] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 45.123669][ T3955] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3957] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3957] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3957] write(4, "37", 2) = 2
[pid 3957] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3957] exit_group(0) = ?
[pid 3957] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3957, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3958
./strace-static-x86_64: Process 3958 attached
[pid 3958] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3958] setpgid(0, 0) = 0
[pid 3958] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3958] write(3, "1000", 4) = 4
[pid 3958] close(3) = 0
[pid 3958] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3958] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3958] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3958] write(4, "37", 2) = 2
[pid 3958] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3958] exit_group(0) = ?
[pid 3958] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3958, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3959
./strace-static-x86_64: Process 3959 attached
[pid 3959] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3959] setpgid(0, 0) = 0
[pid 3959] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3959] write(3, "1000", 4) = 4
[pid 3959] close(3) = 0
[pid 3959] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3959] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3959] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3959] write(4, "37", 2) = 2
[pid 3959] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3959] exit_group(0) = ?
[pid 3959] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3959, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3960 attached
, child_tidptr=0x55555650c5d0) = 3960
[pid 3960] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3960] setpgid(0, 0) = 0
[pid 3960] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3960] write(3, "1000", 4) = 4
[pid 3960] close(3) = 0
[pid 3960] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[ 45.228885][ T3957] debugfs: Directory 'loop0' with parent 'block' already present!
[ 45.273833][ T3959] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3960] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3960] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3960] write(4, "37", 2) = 2
[pid 3960] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3960] exit_group(0) = ?
[pid 3960] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3960, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3961
./strace-static-x86_64: Process 3961 attached
[pid 3961] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3961] setpgid(0, 0) = 0
[pid 3961] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3961] write(3, "1000", 4) = 4
[pid 3961] close(3) = 0
[pid 3961] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3961] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 EBUSY (Device or resource busy)
[pid 3961] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3961] write(4, "37", 2) = 2
[pid 3961] ioctl(3, LOOP_CTL_ADD, 0) = -1 EEXIST (File exists)
[pid 3961] exit_group(0) = ?
[pid 3961] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3961, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3962
./strace-static-x86_64: Process 3962 attached
[pid 3962] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3962] setpgid(0, 0) = 0
[pid 3962] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3962] write(3, "1000", 4) = 4
[pid 3962] close(3) = 0
[pid 3962] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3962] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3962] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3962] write(4, "37", 2) = 2
[pid 3962] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3962] exit_group(0) = ?
[pid 3962] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3962, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3963
./strace-static-x86_64: Process 3963 attached
[pid 3963] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3963] setpgid(0, 0) = 0
[pid 3963] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3963] write(3, "1000", 4) = 4
[pid 3963] close(3) = 0
[pid 3963] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3963] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3963] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3963] write(4, "37", 2) = 2
[pid 3963] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3963] exit_group(0) = ?
[pid 3963] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3963, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3964 attached
, child_tidptr=0x55555650c5d0) = 3964
[pid 3964] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3964] setpgid(0, 0) = 0
[pid 3964] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3964] write(3, "1000", 4) = 4
[pid 3964] close(3) = 0
[pid 3964] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3964] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3964] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3964] write(4, "37", 2) = 2
[pid 3964] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3964] exit_group(0) = ?
[pid 3964] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3964, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3965 attached
, child_tidptr=0x55555650c5d0) = 3965
[pid 3965] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3965] setpgid(0, 0) = 0
[pid 3965] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3965] write(3, "1000", 4) = 4
[pid 3965] close(3) = 0
[pid 3965] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3965] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3965] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3965] write(4, "37", 2) = 2
[pid 3965] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3965] exit_group(0) = ?
[pid 3965] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3965, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3966
./strace-static-x86_64: Process 3966 attached
[pid 3966] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3966] setpgid(0, 0) = 0
[pid 3966] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3966] write(3, "1000", 4) = 4
[pid 3966] close(3) = 0
[pid 3966] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3966] ioctl(3, LOOP_CTL_REMOVE, 0) = 0
[pid 3966] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3966] write(4, "37", 2) = 2
[pid 3966] ioctl(3, LOOP_CTL_ADD, 0) = -1 ENOMEM (Cannot allocate memory)
[pid 3966] exit_group(0) = ?
[pid 3966] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3966, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3967
./strace-static-x86_64: Process 3967 attached
[pid 3967] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3967] setpgid(0, 0) = 0
[pid 3967] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3967] write(3, "1000", 4) = 4
[pid 3967] close(3) = 0
[pid 3967] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3
[pid 3967] ioctl(3, LOOP_CTL_REMOVE, 0) = -1 ENODEV (No such device)
[pid 3967] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 4
[pid 3967] write(4, "37", 2) = 2
[ 45.403143][ T3964] debugfs: Directory 'loop0' with parent 'block' already present!
[ 45.438962][ T3965] debugfs: Directory 'loop0' with parent 'block' already present!
[pid 3967] ioctl(3, LOOP_CTL_ADD, 0) = 0
[pid 3967] exit_group(0) = ?
[pid 3967] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3967, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555650c5d0) = 3968
./strace-static-x86_64: Process 3968 attached
[pid 3968] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3968] setpgid(0, 0) = 0
[pid 3968] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3968] write(3, "1000", 4) = 4
[pid 3968] close(3) = 0
[pid 3968] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3