./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1735096206 <...> DUID 00:04:d6:b0:09:ff:72:32:c6:5d:c0:56:b1:2d:70:06:fa:56 forked to background, child pid 3185 [ 25.206566][ T3186] 8021q: adding VLAN 0 to HW filter on device bond0 [ 25.220671][ T3186] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.231' (ECDSA) to the list of known hosts. execve("./syz-executor1735096206", ["./syz-executor1735096206"], 0x7ffff25ff580 /* 10 vars */) = 0 brk(NULL) = 0x555556789000 brk(0x555556789c40) = 0x555556789c40 arch_prctl(ARCH_SET_FS, 0x555556789300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 set_tid_address(0x5555567895d0) = 3613 set_robust_list(0x5555567895e0, 24) = 0 rt_sigaction(SIGRTMIN, {sa_handler=0x7fea237ca430, sa_mask=[], sa_flags=SA_RESTORER|SA_SIGINFO, sa_restorer=0x7fea237cab00}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7fea237ca4d0, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fea237cab00}, NULL, 8) = 0 rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1735096206", 4096) = 28 brk(0x5555567aac40) = 0x5555567aac40 brk(0x5555567ab000) = 0x5555567ab000 mprotect(0x7fea2388b000, 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 3614 attached , child_tidptr=0x5555567895d0) = 3614 [pid 3614] set_robust_list(0x5555567895e0, 24) = 0 [pid 3614] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3614] setpgid(0, 0) = 0 [pid 3614] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3614] write(3, "1000", 4) = 4 [pid 3614] close(3) = 0 [pid 3614] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3614] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fea2379a000 [pid 3614] mprotect(0x7fea2379b000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3614] clone(child_stack=0x7fea237ba3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3615 attached , parent_tid=[3615], tls=0x7fea237ba700, child_tidptr=0x7fea237ba9d0) = 3615 [pid 3614] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3615] set_robust_list(0x7fea237ba9e0, 24 [pid 3614] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3615] <... set_robust_list resumed>) = 0 [pid 3615] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3615] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3614] <... futex resumed>) = 0 [pid 3614] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3614] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3615] <... futex resumed>) = 1 [pid 3615] ioctl(3, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE) = 0 [pid 3615] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3614] <... futex resumed>) = 0 [pid 3614] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3614] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3615] <... futex resumed>) = 1 [pid 3615] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 4 [pid 3615] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3614] <... futex resumed>) = 0 [pid 3614] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3614] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3615] <... futex resumed>) = 1 [pid 3615] socketpair(AF_UNIX, SOCK_STREAM, 0, [5, 6]) = 0 [pid 3615] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3614] <... futex resumed>) = 0 [pid 3614] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3614] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3615] <... futex resumed>) = 1 [pid 3615] ioctl(4, NBD_SET_SOCK, 5) = 0 [pid 3615] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3614] <... futex resumed>) = 0 [pid 3615] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3614] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3615] <... openat resumed>) = 7 [pid 3614] <... futex resumed>) = 0 [pid 3615] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3614] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3615] <... futex resumed>) = 0 [pid 3614] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3615] ioctl(4, NBD_SET_SOCK, 5 [pid 3614] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3614] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 3614] futex(0x7fea238914fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3614] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fea23779000 [pid 3614] mprotect(0x7fea2377a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3614] clone(child_stack=0x7fea237993f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3616], tls=0x7fea23799700, child_tidptr=0x7fea237999d0) = 3616 [pid 3614] futex(0x7fea238914f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3614] futex(0x7fea238914fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3616 attached [pid 3616] set_robust_list(0x7fea237999e0, 24) = 0 [pid 3616] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 8 [pid 3616] write(8, "29", 2) = 2 [pid 3615] <... ioctl resumed>) = 0 [pid 3615] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3615] futex(0x7fea238914e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3616] ioctl(7, NBD_DO_IT [pid 3614] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) syzkaller login: [ 45.073299][ T3616] kobject_add_internal failed for 0 (error: -12 parent: mq) [pid 3614] exit_group(0 [pid 3616] <... ioctl resumed>) = ? [pid 3615] <... futex resumed>) = ? [pid 3614] <... exit_group resumed>) = ? [pid 3616] +++ exited with 0 +++ [pid 3615] +++ exited with 0 +++ [pid 3614] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3614, si_uid=0, si_status=0, si_utime=0, si_stime=5} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3620 attached , child_tidptr=0x5555567895d0) = 3620 [pid 3620] set_robust_list(0x5555567895e0, 24) = 0 [pid 3620] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3620] setpgid(0, 0) = 0 [pid 3620] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3620] write(3, "1000", 4) = 4 [pid 3620] close(3) = 0 [pid 3620] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3620] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fea2379a000 [pid 3620] mprotect(0x7fea2379b000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3620] clone(child_stack=0x7fea237ba3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3621], tls=0x7fea237ba700, child_tidptr=0x7fea237ba9d0) = 3621 [pid 3620] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3620] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3621 attached [pid 3621] set_robust_list(0x7fea237ba9e0, 24) = 0 [pid 3621] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3621] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3620] <... futex resumed>) = 0 [pid 3620] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3620] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3621] <... futex resumed>) = 1 [pid 3621] ioctl(3, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE) = 0 [pid 3621] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3620] <... futex resumed>) = 0 [pid 3620] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3620] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3621] <... futex resumed>) = 1 [pid 3621] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 4 [pid 3621] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3620] <... futex resumed>) = 0 [pid 3620] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3620] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3621] <... futex resumed>) = 1 [pid 3621] socketpair(AF_UNIX, SOCK_STREAM, 0, [5, 6]) = 0 [pid 3621] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3620] <... futex resumed>) = 0 [pid 3620] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3620] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3621] <... futex resumed>) = 1 [ 45.219946][ T3616] block nbd0: shutting down sockets [pid 3621] ioctl(4, NBD_SET_SOCK, 5) = 0 [pid 3621] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3620] <... futex resumed>) = 0 [pid 3621] futex(0x7fea238914e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3620] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3621] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3620] <... futex resumed>) = 0 [pid 3621] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3620] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3621] <... openat resumed>) = 7 [pid 3621] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3620] <... futex resumed>) = 0 [pid 3621] futex(0x7fea238914e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3620] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3621] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3620] <... futex resumed>) = 0 [pid 3621] ioctl(4, NBD_SET_SOCK, 5 [pid 3620] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3621] <... ioctl resumed>) = 0 [pid 3621] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3620] <... futex resumed>) = 0 [pid 3621] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3620] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3621] <... openat resumed>) = 8 [pid 3620] <... futex resumed>) = 0 [pid 3620] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3621] write(8, "29", 2) = 2 [pid 3621] ioctl(7, NBD_DO_IT [pid 3620] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 3620] exit_group(0) = ? [pid 3621] <... ioctl resumed>) = ? [pid 3621] +++ exited with 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=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555567895d0) = 3622 ./strace-static-x86_64: Process 3622 attached [pid 3622] set_robust_list(0x5555567895e0, 24) = 0 [pid 3622] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3622] setpgid(0, 0) = 0 [pid 3622] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3622] write(3, "1000", 4) = 4 [pid 3622] close(3) = 0 [pid 3622] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3622] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fea2379a000 [pid 3622] mprotect(0x7fea2379b000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3622] clone(child_stack=0x7fea237ba3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 3623 attached [pid 3623] set_robust_list(0x7fea237ba9e0, 24) = 0 [pid 3623] futex(0x7fea238914e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3622] <... clone resumed>, parent_tid=[3623], tls=0x7fea237ba700, child_tidptr=0x7fea237ba9d0) = 3623 [pid 3622] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3623] <... futex resumed>) = 0 [pid 3623] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3623] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3623] futex(0x7fea238914e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3622] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 3622] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3623] <... futex resumed>) = 0 [pid 3623] ioctl(3, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE [pid 3622] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3623] <... ioctl resumed>) = 0 [pid 3623] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3622] <... futex resumed>) = 0 [pid 3622] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3622] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3623] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 4 [pid 3623] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3622] <... futex resumed>) = 0 [pid 3622] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3622] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [ 45.506806][ T3621] block nbd0: shutting down sockets [pid 3623] socketpair(AF_UNIX, SOCK_STREAM, 0, [5, 6]) = 0 [pid 3623] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3622] <... futex resumed>) = 0 [pid 3622] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3622] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3623] ioctl(4, NBD_SET_SOCK, 5) = 0 [pid 3623] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3622] <... futex resumed>) = 0 [pid 3623] futex(0x7fea238914e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3622] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3623] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3622] <... futex resumed>) = 0 [pid 3623] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3622] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3623] <... openat resumed>) = 7 [pid 3623] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3622] <... futex resumed>) = 0 [pid 3623] futex(0x7fea238914e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3622] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3623] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3622] <... futex resumed>) = 0 [pid 3623] ioctl(4, NBD_SET_SOCK, 5 [pid 3622] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3623] <... ioctl resumed>) = 0 [pid 3623] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3622] <... futex resumed>) = 0 [pid 3623] futex(0x7fea238914e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3622] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3623] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3622] <... futex resumed>) = 0 [pid 3623] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3622] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3623] <... openat resumed>) = 8 [pid 3623] write(8, "29", 2) = 2 [pid 3623] ioctl(7, NBD_DO_IT [pid 3622] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 3622] exit_group(0 [pid 3623] <... ioctl resumed>) = ? [pid 3622] <... exit_group resumed>) = ? [pid 3623] +++ exited with 0 +++ [pid 3622] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3622, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555567895d0) = 3624 ./strace-static-x86_64: Process 3624 attached [pid 3624] set_robust_list(0x5555567895e0, 24) = 0 [pid 3624] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3624] setpgid(0, 0) = 0 [pid 3624] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3624] write(3, "1000", 4) = 4 [pid 3624] close(3) = 0 [pid 3624] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3624] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fea2379a000 [pid 3624] mprotect(0x7fea2379b000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3624] clone(child_stack=0x7fea237ba3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3625], tls=0x7fea237ba700, child_tidptr=0x7fea237ba9d0) = 3625 [pid 3624] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3624] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3625 attached [pid 3625] set_robust_list(0x7fea237ba9e0, 24) = 0 [pid 3625] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3625] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3624] <... futex resumed>) = 0 [pid 3624] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3624] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3625] <... futex resumed>) = 1 [pid 3625] ioctl(3, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE) = 0 [pid 3625] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3624] <... futex resumed>) = 0 [pid 3624] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3624] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3625] <... futex resumed>) = 1 [pid 3625] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 4 [pid 3625] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3624] <... futex resumed>) = 0 [pid 3624] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3624] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3625] <... futex resumed>) = 1 [pid 3625] socketpair(AF_UNIX, SOCK_STREAM, 0, [5, 6]) = 0 [pid 3625] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3624] <... futex resumed>) = 0 [pid 3624] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3624] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3625] <... futex resumed>) = 1 [ 45.815173][ T3623] block nbd0: shutting down sockets [pid 3625] ioctl(4, NBD_SET_SOCK, 5 [pid 3624] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 3624] futex(0x7fea238914fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3624] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fea23779000 [pid 3624] mprotect(0x7fea2377a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3624] clone(child_stack=0x7fea237993f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3626], tls=0x7fea23799700, child_tidptr=0x7fea237999d0) = 3626 [pid 3624] futex(0x7fea238914f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 3626 attached [pid 3625] <... ioctl resumed>) = 0 [pid 3624] <... futex resumed>) = 0 [pid 3626] set_robust_list(0x7fea237999e0, 24 [pid 3625] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3624] futex(0x7fea238914fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3626] <... set_robust_list resumed>) = 0 [pid 3625] <... futex resumed>) = 0 [pid 3626] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3625] futex(0x7fea238914e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3626] <... openat resumed>) = 7 [pid 3626] futex(0x7fea238914fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3624] <... futex resumed>) = 0 [pid 3626] futex(0x7fea238914f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3624] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3625] <... futex resumed>) = 0 [pid 3624] <... futex resumed>) = 1 [pid 3625] ioctl(4, NBD_SET_SOCK, 5 [pid 3624] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3625] <... ioctl resumed>) = 0 [pid 3625] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3624] <... futex resumed>) = 0 [pid 3625] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3624] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3625] <... openat resumed>) = 8 [pid 3624] <... futex resumed>) = 0 [pid 3625] write(8, "29", 2 [pid 3624] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3625] <... write resumed>) = 2 [pid 3625] ioctl(7, NBD_DO_IT [pid 3624] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 3624] exit_group(0 [pid 3626] <... futex resumed>) = ? [pid 3625] <... ioctl resumed>) = ? [pid 3624] <... exit_group resumed>) = ? [pid 3626] +++ exited with 0 +++ [pid 3625] +++ exited with 0 +++ [pid 3624] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3624, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555567895d0) = 3627 ./strace-static-x86_64: Process 3627 attached [pid 3627] set_robust_list(0x5555567895e0, 24) = 0 [pid 3627] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3627] setpgid(0, 0) = 0 [pid 3627] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3627] write(3, "1000", 4) = 4 [pid 3627] close(3) = 0 [pid 3627] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3627] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fea2379a000 [pid 3627] mprotect(0x7fea2379b000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3627] clone(child_stack=0x7fea237ba3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3628], tls=0x7fea237ba700, child_tidptr=0x7fea237ba9d0) = 3628 [pid 3627] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3627] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3628 attached [pid 3628] set_robust_list(0x7fea237ba9e0, 24) = 0 [pid 3628] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3628] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3627] <... futex resumed>) = 0 [ 46.134632][ T3625] block nbd0: shutting down sockets [pid 3627] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3627] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3628] <... futex resumed>) = 1 [pid 3628] ioctl(3, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE) = 0 [pid 3628] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3627] <... futex resumed>) = 0 [pid 3627] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3627] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3628] <... futex resumed>) = 1 [pid 3628] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 4 [pid 3628] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3627] <... futex resumed>) = 0 [pid 3627] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3627] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3628] <... futex resumed>) = 1 [pid 3628] socketpair(AF_UNIX, SOCK_STREAM, 0, [5, 6]) = 0 [pid 3628] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3627] <... futex resumed>) = 0 [pid 3627] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3627] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3628] <... futex resumed>) = 1 [pid 3628] ioctl(4, NBD_SET_SOCK, 5) = 0 [pid 3628] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3627] <... futex resumed>) = 0 [pid 3628] futex(0x7fea238914e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3627] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3628] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3627] <... futex resumed>) = 0 [pid 3628] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY [pid 3627] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3628] <... openat resumed>) = 7 [pid 3628] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3627] <... futex resumed>) = 0 [pid 3628] futex(0x7fea238914e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3627] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3628] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3627] <... futex resumed>) = 0 [pid 3628] ioctl(4, NBD_SET_SOCK, 5 [pid 3627] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3628] <... ioctl resumed>) = 0 [pid 3628] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3627] <... futex resumed>) = 0 [pid 3628] futex(0x7fea238914e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3627] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3628] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3627] <... futex resumed>) = 0 [pid 3628] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3627] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3628] <... openat resumed>) = 8 [pid 3628] write(8, "29", 2) = 2 [pid 3628] ioctl(7, NBD_DO_IT [pid 3627] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 3627] exit_group(0 [pid 3628] <... ioctl resumed>) = ? [pid 3627] <... exit_group resumed>) = ? [pid 3628] +++ exited with 0 +++ [pid 3627] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3627, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555567895d0) = 3629 ./strace-static-x86_64: Process 3629 attached [pid 3629] set_robust_list(0x5555567895e0, 24) = 0 [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] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3629] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fea2379a000 [pid 3629] mprotect(0x7fea2379b000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3629] clone(child_stack=0x7fea237ba3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3630], tls=0x7fea237ba700, child_tidptr=0x7fea237ba9d0) = 3630 [pid 3629] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3629] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3630 attached [ 46.460510][ T3628] block nbd0: shutting down sockets [pid 3630] set_robust_list(0x7fea237ba9e0, 24) = 0 [pid 3630] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 3630] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3629] <... futex resumed>) = 0 [pid 3629] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3629] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3630] <... futex resumed>) = 1 [pid 3630] ioctl(3, NBD_SET_FLAGS, NBD_FLAG_HAS_FLAGS|NBD_FLAG_READ_ONLY|NBD_FLAG_SEND_FLUSH|NBD_FLAG_SEND_FUA|NBD_FLAG_ROTATIONAL|NBD_FLAG_SEND_TRIM|NBD_FLAG_SEND_WRITE_ZEROES|NBD_FLAG_SEND_DF|NBD_FLAG_CAN_MULTI_CONN|NBD_FLAG_SEND_RESIZE) = 0 [pid 3630] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3629] <... futex resumed>) = 0 [pid 3629] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3629] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3630] <... futex resumed>) = 1 [pid 3630] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 4 [pid 3630] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3629] <... futex resumed>) = 0 [pid 3629] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3629] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3630] <... futex resumed>) = 1 [pid 3630] socketpair(AF_UNIX, SOCK_STREAM, 0, [5, 6]) = 0 [pid 3630] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 3629] <... futex resumed>) = 0 [pid 3629] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3629] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3630] <... futex resumed>) = 1 [pid 3630] ioctl(4, NBD_SET_SOCK, 5 [pid 3629] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 3629] futex(0x7fea238914fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3629] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fea23779000 [pid 3629] mprotect(0x7fea2377a000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3629] clone(child_stack=0x7fea237993f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[3631], tls=0x7fea23799700, child_tidptr=0x7fea237999d0) = 3631 [pid 3629] futex(0x7fea238914f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3629] futex(0x7fea238914fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3631 attached [pid 3631] set_robust_list(0x7fea237999e0, 24) = 0 [pid 3631] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 7 [pid 3631] futex(0x7fea238914fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 3629] <... futex resumed>) = 0 [pid 3629] futex(0x7fea238914f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3629] futex(0x7fea238914fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3631] <... futex resumed>) = 1 [pid 3631] ioctl(4, NBD_SET_SOCK, 5 [pid 3630] <... ioctl resumed>) = 0 [pid 3630] futex(0x7fea238914ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3630] futex(0x7fea238914e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3629] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 3629] futex(0x7fea238914fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 3629] futex(0x7fea238914e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3629] futex(0x7fea238914ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3630] <... futex resumed>) = 0 [pid 3630] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 8 [pid 3630] write(8, "29", 2) = 2 [pid 3630] ioctl(7, NBD_DO_IT [pid 3631] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 3631] futex(0x7fea238914fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3631] futex(0x7fea238914f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3629] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 46.638213][ T3631] block nbd0: Device being setup by another task [ 46.673658][ T3630] ------------[ cut here ]------------ [ 46.680827][ T3630] kernfs: can not remove 'nr_tags', no directory [ 46.687359][ T3630] WARNING: CPU: 1 PID: 3630 at fs/kernfs/dir.c:1580 kernfs_remove_by_name_ns+0xb0/0xe0 [ 46.698399][ T3630] Modules linked in: [ 46.702362][ T3630] CPU: 1 PID: 3630 Comm: syz-executor173 Not tainted 6.0.0-rc4-syzkaller-00302-gb96fbd602d35 #0 [ 46.714701][ T3630] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 [ 46.725031][ T3630] RIP: 0010:kernfs_remove_by_name_ns+0xb0/0xe0 [ 46.731538][ T3630] Code: 48 89 c3 e8 22 a9 74 ff 48 89 df e8 aa e5 ff ff 31 db eb 29 e8 11 a9 74 ff 48 c7 c7 c0 12 c0 8a 4c 89 fe 31 c0 e8 40 81 3c ff <0f> 0b bb fe ff ff ff eb 12 e8 f2 a8 74 ff bb fe ff ff ff 4c 89 e7 [ 46.751823][ T3630] RSP: 0018:ffffc900038df9a8 EFLAGS: 00010246 [ 46.758148][ T3630] RAX: 206ee7f3862b3300 RBX: ffffffff8d346b20 RCX: ffff888027301d80 [ 46.766207][ T3630] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 46.774497][ T3630] RBP: dffffc0000000000 R08: ffffffff816d5c8d R09: ffffed1017364f14 [ 46.782806][ T3630] R10: ffffed1017364f14 R11: 1ffff11017364f13 R12: ffffffff8d346ae8 [ 46.791204][ T3630] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8b084ae0 [ 46.799485][ T3630] FS: 00007fea237ba700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 [ 46.808713][ T3630] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.815392][ T3630] CR2: 00007fea2384e4c0 CR3: 0000000071fce000 CR4: 00000000003506e0 [ 46.823737][ T3630] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 46.832010][ T3630] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 46.840266][ T3630] Call Trace: [ 46.843642][ T3630] [ 46.846656][ T3630] sysfs_remove_group+0x102/0x2b0 [ 46.852031][ T3630] sysfs_remove_groups+0x5b/0xb0 [ 46.857087][ T3630] __kobject_del+0x84/0x300 [ 46.862319][ T3630] kobject_del+0x41/0x60 [ 46.866667][ T3630] blk_mq_sysfs_unregister_hctxs+0x235/0x320 [ 46.872966][ T3630] ? blk_mq_sysfs_unregister+0x3a0/0x3a0 [ 46.878953][ T3630] ? elevator_switch_mq+0x583/0x6d0 [ 46.884222][ T3630] blk_mq_update_nr_hw_queues+0x647/0x12d0 [ 46.890452][ T3630] ? blk_mq_update_nr_requests+0x500/0x500 [ 46.896352][ T3630] ? mutex_lock_io_nested+0x60/0x60 [ 46.901952][ T3630] nbd_start_device+0x15d/0xb70 [ 46.906867][ T3630] ? bpf_lsm_capable+0x5/0x10 [ 46.911886][ T3630] ? security_capable+0xb1/0xd0 [ 46.916874][ T3630] nbd_ioctl+0x3b3/0xa40 [ 46.921394][ T3630] ? nbd_release+0x130/0x130 [ 46.926081][ T3630] ? memset+0x1f/0x40 [ 46.930467][ T3630] ? smack_file_ioctl+0x298/0x3a0 [ 46.935616][ T3630] ? smack_file_alloc_security+0xd0/0xd0 [ 46.941601][ T3630] ? nbd_release+0x130/0x130 [ 46.946300][ T3630] blkdev_ioctl+0x3a6/0x760 [ 46.951157][ T3630] ? blkdev_compat_ptr_ioctl+0xd0/0xd0 [ 46.956725][ T3630] ? bpf_lsm_file_ioctl+0x5/0x10 [ 46.962064][ T3630] ? security_file_ioctl+0x9d/0xb0 [ 46.967308][ T3630] ? blkdev_compat_ptr_ioctl+0xd0/0xd0 [ 46.973335][ T3630] __se_sys_ioctl+0xfb/0x170 [ 46.978478][ T3630] do_syscall_64+0x2b/0x70 [ 46.982961][ T3630] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 46.989244][ T3630] RIP: 0033:0x7fea2380d319 [ 46.993725][ T3630] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 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 b8 ff ff ff f7 d8 64 89 01 48 [ 47.013736][ T3630] RSP: 002b:00007fea237ba2e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 47.022439][ T3630] RAX: ffffffffffffffda RBX: 00007fea238914e0 RCX: 00007fea2380d319 [ 47.030740][ T3630] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 47.039003][ T3630] RBP: 00007fea2385e194 R08: 0000000000000002 R09: 0000000000003932 [ 47.047076][ T3630] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fea238914ec [ 47.055469][ T3630] R13: 00007fea237ba2f0 R14: 00007fea238914e8 R15: 0000000000000002 [ 47.063858][ T3630] [ 47.066943][ T3630] Kernel panic - not syncing: panic_on_warn set ... [ 47.073541][ T3630] CPU: 1 PID: 3630 Comm: syz-executor173 Not tainted 6.0.0-rc4-syzkaller-00302-gb96fbd602d35 #0 [ 47.083968][ T3630] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 [ 47.094042][ T3630] Call Trace: [ 47.097331][ T3630] [ 47.100276][ T3630] dump_stack_lvl+0x1e3/0x2cb [ 47.104988][ T3630] ? io_alloc_page_table+0x110/0x110 [ 47.110292][ T3630] ? panic+0x76b/0x76b [ 47.114392][ T3630] ? vscnprintf+0x59/0x80 [ 47.118803][ T3630] ? kernfs_remove_by_name_ns+0xb0/0xe0 [ 47.124455][ T3630] panic+0x316/0x76b [ 47.128376][ T3630] ? __warn+0x131/0x220 [ 47.132554][ T3630] ? fb_is_primary_device+0xcc/0xcc [ 47.137968][ T3630] ? kernfs_remove_by_name_ns+0xb0/0xe0 [ 47.143801][ T3630] __warn+0x1fa/0x220 [ 47.147817][ T3630] ? kernfs_remove_by_name_ns+0xb0/0xe0 [ 47.153421][ T3630] report_bug+0x1b3/0x2d0 [ 47.157806][ T3630] handle_bug+0x3d/0x70 [ 47.161984][ T3630] exc_invalid_op+0x16/0x40 [ 47.166504][ T3630] asm_exc_invalid_op+0x16/0x20 [ 47.171368][ T3630] RIP: 0010:kernfs_remove_by_name_ns+0xb0/0xe0 [ 47.177540][ T3630] Code: 48 89 c3 e8 22 a9 74 ff 48 89 df e8 aa e5 ff ff 31 db eb 29 e8 11 a9 74 ff 48 c7 c7 c0 12 c0 8a 4c 89 fe 31 c0 e8 40 81 3c ff <0f> 0b bb fe ff ff ff eb 12 e8 f2 a8 74 ff bb fe ff ff ff 4c 89 e7 [ 47.197167][ T3630] RSP: 0018:ffffc900038df9a8 EFLAGS: 00010246 [ 47.203258][ T3630] RAX: 206ee7f3862b3300 RBX: ffffffff8d346b20 RCX: ffff888027301d80 [ 47.211247][ T3630] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 47.220111][ T3630] RBP: dffffc0000000000 R08: ffffffff816d5c8d R09: ffffed1017364f14 [ 47.228100][ T3630] R10: ffffed1017364f14 R11: 1ffff11017364f13 R12: ffffffff8d346ae8 [ 47.236092][ T3630] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8b084ae0 [ 47.244101][ T3630] ? __wake_up_klogd+0xcd/0x100 [ 47.248982][ T3630] ? kernfs_remove_by_name_ns+0xb0/0xe0 [ 47.254733][ T3630] sysfs_remove_group+0x102/0x2b0 [ 47.259777][ T3630] sysfs_remove_groups+0x5b/0xb0 [ 47.264739][ T3630] __kobject_del+0x84/0x300 [ 47.269264][ T3630] kobject_del+0x41/0x60 [ 47.273527][ T3630] blk_mq_sysfs_unregister_hctxs+0x235/0x320 [ 47.279532][ T3630] ? blk_mq_sysfs_unregister+0x3a0/0x3a0 [ 47.285189][ T3630] ? elevator_switch_mq+0x583/0x6d0 [ 47.291535][ T3630] blk_mq_update_nr_hw_queues+0x647/0x12d0 [ 47.297379][ T3630] ? blk_mq_update_nr_requests+0x500/0x500 [ 47.303210][ T3630] ? mutex_lock_io_nested+0x60/0x60 [ 47.308436][ T3630] nbd_start_device+0x15d/0xb70 [ 47.313322][ T3630] ? bpf_lsm_capable+0x5/0x10 [ 47.318013][ T3630] ? security_capable+0xb1/0xd0 [ 47.322888][ T3630] nbd_ioctl+0x3b3/0xa40 [ 47.327177][ T3630] ? nbd_release+0x130/0x130 [ 47.331788][ T3630] ? memset+0x1f/0x40 [ 47.335871][ T3630] ? smack_file_ioctl+0x298/0x3a0 [ 47.340917][ T3630] ? smack_file_alloc_security+0xd0/0xd0 [ 47.346570][ T3630] ? nbd_release+0x130/0x130 [ 47.351180][ T3630] blkdev_ioctl+0x3a6/0x760 [ 47.355711][ T3630] ? blkdev_compat_ptr_ioctl+0xd0/0xd0 [ 47.361196][ T3630] ? bpf_lsm_file_ioctl+0x5/0x10 [ 47.366149][ T3630] ? security_file_ioctl+0x9d/0xb0 [ 47.371284][ T3630] ? blkdev_compat_ptr_ioctl+0xd0/0xd0 [ 47.376760][ T3630] __se_sys_ioctl+0xfb/0x170 [ 47.381375][ T3630] do_syscall_64+0x2b/0x70 [ 47.385806][ T3630] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 47.391722][ T3630] RIP: 0033:0x7fea2380d319 [ 47.396150][ T3630] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 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 b8 ff ff ff f7 d8 64 89 01 48 [ 47.415803][ T3630] RSP: 002b:00007fea237ba2e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 47.424254][ T3630] RAX: ffffffffffffffda RBX: 00007fea238914e0 RCX: 00007fea2380d319 [ 47.432242][ T3630] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 47.440231][ T3630] RBP: 00007fea2385e194 R08: 0000000000000002 R09: 0000000000003932 [ 47.448221][ T3630] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fea238914ec [ 47.456207][ T3630] R13: 00007fea237ba2f0 R14: 00007fea238914e8 R15: 0000000000000002 [ 47.464212][ T3630] [ 47.467535][ T3630] Kernel Offset: disabled [ 47.471938][ T3630] Rebooting in 86400 seconds..