./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor984762147 <...> Warning: Permanently added '10.128.1.120' (ED25519) to the list of known hosts. execve("./syz-executor984762147", ["./syz-executor984762147"], 0x7ffc25145360 /* 10 vars */) = 0 brk(NULL) = 0x55558f39c000 brk(0x55558f39cd00) = 0x55558f39cd00 arch_prctl(ARCH_SET_FS, 0x55558f39c380) = 0 set_tid_address(0x55558f39c650) = 359 set_robust_list(0x55558f39c660, 24) = 0 rseq(0x55558f39cca0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor984762147", 4096) = 27 getrandom("\x0a\x74\xdc\x6c\xfd\x35\x49\x1c", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558f39cd00 brk(0x55558f3bdd00) = 0x55558f3bdd00 brk(0x55558f3be000) = 0x55558f3be000 mprotect(0x7f9dbca4e000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55558f39c650) = 361 ./strace-static-x86_64: Process 361 attached [pid 361] set_robust_list(0x55558f39c660, 24) = 0 [pid 361] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 361] getppid() = 0 [pid 361] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 361] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 361] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 361] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 361] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 361] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 361] unshare(CLONE_NEWNS) = 0 [pid 361] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 361] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 361] unshare(CLONE_NEWCGROUP) = 0 [pid 361] unshare(CLONE_NEWUTS) = 0 [pid 361] unshare(CLONE_SYSVSEM) = 0 [pid 361] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 361] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 361] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 361] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 361] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 361] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 361] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 361] getpid() = 1 [pid 361] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 41 56 53 48 89 fb [ 27.402850][ T361] RSP: 0018:ffff8881ee627a68 EFLAGS: 00010293 [ 27.408762][ T361] RAX: ffffffff819e2800 RBX: ffff8881dd2ed238 RCX: ffff8881f30e3f00 [ 27.416721][ T361] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 27.424854][ T361] RBP: ffff8881dd2ed9c0 R08: ffffffff819e2128 R09: 0000000000000003 [ 27.432691][ T361] R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff8881dd2ed220 [ 27.440768][ T361] R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8881e9b78100 [ 27.448779][ T361] FS: 000055558f39c380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 27.457631][ T361] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.464053][ T361] CR2: 00007f9dbca52130 CR3: 00000001ed874000 CR4: 00000000003406b0 [ 27.471957][ T361] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.479767][ T361] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.487926][ T361] Call Trace: [ 27.490999][ T361] ? __die+0xb4/0x100 [ 27.495110][ T361] ? die+0x26/0x50 [ 27.498672][ T361] ? do_trap+0x1e7/0x340 [ 27.502738][ T361] ? may_delete+0x750/0x760 [ 27.507081][ T361] ? may_delete+0x750/0x760 [ 27.511498][ T361] ? do_invalid_op+0xfb/0x110 [ 27.516010][ T361] ? may_delete+0x750/0x760 [ 27.520349][ T361] ? invalid_op+0x1e/0x30 [ 27.524516][ T361] ? may_delete+0x78/0x760 [ 27.528784][ T361] ? may_delete+0x750/0x760 [ 27.533211][ T361] ? may_delete+0x750/0x760 [ 27.537536][ T361] ? may_delete+0x750/0x760 [ 27.541964][ T361] vfs_rmdir+0x29/0x3c0 [ 27.546045][ T361] incfs_kill_sb+0x105/0x200 [ 27.550470][ T361] deactivate_locked_super+0xa8/0x110 [ 27.555760][ T361] deactivate_super+0x1e2/0x2a0 [ 27.560544][ T361] ? deactivate_locked_super+0x110/0x110 [ 27.566015][ T361] ? fast_dput+0x7a/0x280 [ 27.570191][ T361] cleanup_mnt+0x44e/0x500 [ 27.574517][ T361] task_work_run+0x140/0x170 [ 27.579114][ T361] do_exit+0xcaf/0x2bc0 [ 27.583118][ T361] ? put_task_struct+0x80/0x80 [ 27.587802][ T361] ? syscall_trace_enter+0x650/0x940 [ 27.592917][ T361] do_group_exit+0x138/0x300 [ 27.597364][ T361] __x64_sys_exit_group+0x3b/0x40 [ 27.602384][ T361] do_syscall_64+0xca/0x1c0 [ 27.606714][ T361] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 27.612508][ T361] RIP: 0033:0x7f9dbc9d7c09 [ 27.616881][ T361] Code: Bad RIP value. [ 27.620861][ T361] RSP: 002b:00007ffd16363208 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 27.629291][ T361] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f9dbc9d7c09 [ 27.637099][ T361] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 27.645016][ T361] RBP: 00007f9dbca542b0 R08: ffffffffffffffb8 R09: 0000000000000006 [ 27.652825][ T361] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9dbca542b0 [ 27.660844][ T361] R13: 0000000000000000 R14: 00007f9dbca55020 R15: 00007f9dbc9a6150 [ 27.668646][ T361] Modules linked in: [ 27.672670][ T361] ---[ end trace 802acf0c210a14f1 ]--- [ 27.677974][ T361] RIP: 0010:may_delete+0x750/0x760 [ 27.682938][ T361] Code: 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c e8 fd ff ff 4c 89 e7 e8 31 0d f6 ff e9 db fd ff ff e8 07 23 c6 ff 0f 0b e8 00 23 c6 ff <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 41 56 53 48 89 fb [ 27.702838][ T361] RSP: 0018:ffff8881ee627a68 EFLAGS: 00010293 [ 27.708699][ T361] RAX: ffffffff819e2800 RBX: ffff8881dd2ed238 RCX: ffff8881f30e3f00 [ 27.716538][ T361] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 27.724337][ T361] RBP: ffff8881dd2ed9c0 R08: ffffffff819e2128 R09: 0000000000000003 [ 27.732247][ T361] R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff8881dd2ed220 [ 27.740040][ T361] R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8881e9b78100 [ 27.747905][ T361] FS: 000055558f39c380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 27.756637][ T361] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.763088][ T361] CR2: 00007f9dbc9d7bdf CR3: 00000001ed874000 CR4: 00000000003406b0 [ 27.770887][ T361] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.779009][ T361] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.786856][ T361] Kernel panic - not syncing: Fatal exception [ 27.792965][ T361] Kernel Offset: disabled [ 27.797091][ T361] Rebooting in 86400 seconds..