./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2900416522 <...> Warning: Permanently added '10.128.0.161' (ED25519) to the list of known hosts. execve("./syz-executor2900416522", ["./syz-executor2900416522"], 0x7ffe287e4370 /* 10 vars */) = 0 brk(NULL) = 0x5555861e7000 brk(0x5555861e7d00) = 0x5555861e7d00 arch_prctl(ARCH_SET_FS, 0x5555861e7380) = 0 set_tid_address(0x5555861e7650) = 288 set_robust_list(0x5555861e7660, 24) = 0 rseq(0x5555861e7ca0, 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-executor2900416522", 4096) = 28 getrandom("\x0d\x1a\xef\x48\x84\x2a\x00\xb7", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555861e7d00 brk(0x555586208d00) = 0x555586208d00 brk(0x555586209000) = 0x555586209000 mprotect(0x7f086c719000, 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=0x5555861e7650) = 289 ./strace-static-x86_64: Process 289 attached [pid 289] set_robust_list(0x5555861e7660, 24) = 0 [pid 289] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 289] getppid() = 0 [pid 289] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 289] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 289] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 289] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 289] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 289] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 289] unshare(CLONE_NEWNS) = 0 [pid 289] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 289] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 289] unshare(CLONE_NEWCGROUP) = 0 [pid 289] unshare(CLONE_NEWUTS) = 0 [pid 289] unshare(CLONE_SYSVSEM) = 0 [pid 289] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 289] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 289] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 289] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 289] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 289] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 289] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 289] getpid() = 1 [pid 289] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 55 48 89 e5 41 56 53 [ 52.411365][ T289] RSP: 0018:ffffc900007bfb10 EFLAGS: 00010293 [ 52.417407][ T289] RAX: ffffffff81b1d361 RBX: ffff8881209fa000 RCX: ffff888122dbcf00 [ 52.425351][ T289] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 52.433293][ T289] RBP: ffffc900007bfb78 R08: 0000000000000004 R09: 0000000000000003 [ 52.441235][ T289] R10: fffff520000f7f44 R11: 1ffff920000f7f44 R12: dffffc0000000000 [ 52.449179][ T289] R13: 0000000000000001 R14: ffff88811173b250 R15: 1ffff1102413f400 [ 52.457123][ T289] FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 52.466023][ T289] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.472575][ T289] CR2: 00007f086c71d130 CR3: 000000000660f000 CR4: 00000000003506a0 [ 52.480519][ T289] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.488461][ T289] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.496401][ T289] Call Trace: [ 52.499651][ T289] [ 52.502556][ T289] vfs_rmdir+0x32/0x460 [ 52.506688][ T289] incfs_kill_sb+0x105/0x220 [ 52.511270][ T289] deactivate_locked_super+0xa0/0x100 [ 52.516615][ T289] deactivate_super+0xaf/0xe0 [ 52.521262][ T289] cleanup_mnt+0x446/0x500 [ 52.525649][ T289] __cleanup_mnt+0x19/0x20 [ 52.530035][ T289] task_work_run+0x127/0x190 [ 52.534595][ T289] do_exit+0xa7e/0x27a0 [ 52.538725][ T289] ? ptrace_stop+0x6f4/0xa80 [ 52.543287][ T289] ? put_task_struct+0x90/0x90 [ 52.548018][ T289] ? ptrace_notify+0x1c4/0x250 [ 52.552752][ T289] ? do_notify_parent+0x800/0x800 [ 52.557747][ T289] do_group_exit+0x141/0x310 [ 52.562309][ T289] ? debug_smp_processor_id+0x17/0x20 [ 52.567652][ T289] __x64_sys_exit_group+0x3f/0x40 [ 52.572657][ T289] x64_sys_call+0x832/0x9a0 [ 52.577140][ T289] do_syscall_64+0x4c/0xa0 [ 52.581528][ T289] ? clear_bhb_loop+0x50/0xa0 [ 52.586177][ T289] ? clear_bhb_loop+0x50/0xa0 [ 52.590823][ T289] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 52.596686][ T289] RIP: 0033:0x7f086c6a2f49 [ 52.601073][ T289] Code: Unable to access opcode bytes at RIP 0x7f086c6a2f1f. [ 52.608409][ T289] RSP: 002b:00007fff35d3ec18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 52.616796][ T289] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f086c6a2f49 [ 52.624738][ T289] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 52.632682][ T289] RBP: 00007f086c71f370 R08: ffffffffffffffb8 R09: 0000000000000006 [ 52.640623][ T289] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f086c71f370 [ 52.648565][ T289] R13: 0000000000000000 R14: 00007f086c7200e0 R15: 00007f086c671220 [ 52.656510][ T289] [ 52.659505][ T289] Modules linked in: [ 52.664705][ T289] ---[ end trace 0bb293a887106a4a ]--- [ 52.670294][ T289] RIP: 0010:may_delete+0x701/0x710 [ 52.675395][ T289] Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 84 fe ff ff 48 89 df e8 f0 51 f5 ff e9 77 fe ff ff e8 f6 da b6 ff 0f 0b e8 ef da b6 ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 55 48 89 e5 41 56 53 [ 52.695024][ T289] RSP: 0018:ffffc900007bfb10 EFLAGS: 00010293 [ 52.701244][ T289] RAX: ffffffff81b1d361 RBX: ffff8881209fa000 RCX: ffff888122dbcf00 [ 52.709201][ T289] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 52.717181][ T289] RBP: ffffc900007bfb78 R08: 0000000000000004 R09: 0000000000000003 [ 52.725465][ T289] R10: fffff520000f7f44 R11: 1ffff920000f7f44 R12: dffffc0000000000 [ 52.733484][ T289] R13: 0000000000000001 R14: ffff88811173b250 R15: 1ffff1102413f400 [ 52.741487][ T289] FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 52.750613][ T289] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.757210][ T289] CR2: 00007f2c3e51f000 CR3: 000000010d227000 CR4: 00000000003506b0 [ 52.765206][ T289] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.773184][ T289] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.781153][ T289] Kernel panic - not syncing: Fatal exception [ 52.787396][ T289] Kernel Offset: disabled [ 52.791703][ T289] Rebooting in 86400 seconds..