./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1178179048 <...> Warning: Permanently added '10.128.0.194' (ED25519) to the list of known hosts. execve("./syz-executor1178179048", ["./syz-executor1178179048"], 0x7ffcabda7550 /* 10 vars */) = 0 brk(NULL) = 0x55556e50b000 brk(0x55556e50bd00) = 0x55556e50bd00 arch_prctl(ARCH_SET_FS, 0x55556e50b380) = 0 set_tid_address(0x55556e50b650) = 294 set_robust_list(0x55556e50b660, 24) = 0 rseq(0x55556e50bca0, 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-executor1178179048", 4096) = 28 getrandom("\xaf\x2d\x07\xcd\xab\x8a\x61\x32", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556e50bd00 brk(0x55556e52cd00) = 0x55556e52cd00 brk(0x55556e52d000) = 0x55556e52d000 mprotect(0x7fdd48939000, 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 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55556e50b650) = 295 ./strace-static-x86_64: Process 295 attached [pid 295] set_robust_list(0x55556e50b660, 24) = 0 [pid 295] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 295] getppid() = 0 [pid 295] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 295] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 295] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 295] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 295] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 295] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 295] unshare(CLONE_NEWNS) = 0 [pid 295] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 295] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 295] unshare(CLONE_NEWCGROUP) = 0 [pid 295] unshare(CLONE_NEWUTS) = 0 [pid 295] unshare(CLONE_SYSVSEM) = 0 [pid 295] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 295] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 295] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 295] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 295] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 295] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 295] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 295] getpid() = 1 [pid 295] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 0f 1f 00 55 48 89 e5 41 56 53 48 89 fb e8 91 17 b2 ff 4c 8d [ 22.608444][ T295] RSP: 0018:ffffc90000a17af0 EFLAGS: 00010293 [ 22.614345][ T295] RAX: ffffffff81be4f0b RBX: ffff888120ed0140 RCX: ffff88810d1562c0 [ 22.622158][ T295] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 22.629971][ T295] RBP: ffffc90000a17b58 R08: ffffffff81be489f R09: 0000000000000003 [ 22.637779][ T295] R10: fffff52000142f40 R11: dffffc0000000001 R12: ffff888120ed0cc0 [ 22.645590][ T295] R13: 1ffff110241da198 R14: ffff888109880d08 R15: dffffc0000000000 [ 22.653403][ T295] FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 22.662168][ T295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.668594][ T295] CR2: 00007fdd4893d130 CR3: 0000000006a0f000 CR4: 00000000003506a0 [ 22.676405][ T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.684215][ T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.692026][ T295] Call Trace: [ 22.695152][ T295] [ 22.697927][ T295] ? __die_body+0x62/0xb0 [ 22.702094][ T295] ? die+0x88/0xb0 [ 22.705652][ T295] ? do_trap+0x103/0x330 [ 22.709731][ T295] ? may_delete+0x6eb/0x6f0 [ 22.714069][ T295] ? handle_invalid_op+0x95/0xc0 [ 22.718843][ T295] ? may_delete+0x6eb/0x6f0 [ 22.723183][ T295] ? exc_invalid_op+0x32/0x50 [ 22.727695][ T295] ? asm_exc_invalid_op+0x1b/0x20 [ 22.732560][ T295] ? may_delete+0x7f/0x6f0 [ 22.736817][ T295] ? may_delete+0x6eb/0x6f0 [ 22.741152][ T295] ? may_delete+0x6eb/0x6f0 [ 22.745493][ T295] vfs_rmdir+0x32/0x470 [ 22.749483][ T295] incfs_kill_sb+0x113/0x230 [ 22.753911][ T295] deactivate_locked_super+0xad/0x110 [ 22.759116][ T295] deactivate_super+0xbe/0xf0 [ 22.763638][ T295] cleanup_mnt+0x45c/0x510 [ 22.767888][ T295] __cleanup_mnt+0x19/0x20 [ 22.772138][ T295] task_work_run+0x129/0x190 [ 22.776562][ T295] do_exit+0xc48/0x2ca0 [ 22.780556][ T295] ? put_task_struct+0x80/0x80 [ 22.785152][ T295] ? _raw_spin_unlock_irq+0x4e/0x70 [ 22.790186][ T295] ? ptrace_notify+0x24c/0x350 [ 22.794790][ T295] ? do_notify_parent+0xa30/0xa30 [ 22.799650][ T295] do_group_exit+0x141/0x310 [ 22.804200][ T295] __x64_sys_exit_group+0x3f/0x40 [ 22.809060][ T295] x64_sys_call+0x610/0x9a0 [ 22.813389][ T295] do_syscall_64+0x3b/0xb0 [ 22.817641][ T295] ? clear_bhb_loop+0x35/0x90 [ 22.822157][ T295] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 22.827892][ T295] RIP: 0033:0x7fdd488c2ec9 [ 22.832135][ T295] Code: Unable to access opcode bytes at RIP 0x7fdd488c2e9f. [ 22.839341][ T295] RSP: 002b:00007ffd63fac318 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 22.847585][ T295] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fdd488c2ec9 [ 22.855403][ T295] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 22.863239][ T295] RBP: 00007fdd4893f370 R08: ffffffffffffffb8 R09: 0000000000000006 [ 22.871017][ T295] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fdd4893f370 [ 22.878848][ T295] R13: 0000000000000000 R14: 00007fdd489400e0 R15: 00007fdd48891190 [ 22.886658][ T295] [ 22.889505][ T295] Modules linked in: [ 22.893518][ T295] ---[ end trace 35df958e2e42faa4 ]--- [ 22.898799][ T295] RIP: 0010:may_delete+0x6eb/0x6f0 [ 22.904042][ T295] Code: 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 7f fe ff ff 4c 89 e7 e8 c6 6f f4 ff e9 72 fe ff ff e8 ac 17 b2 ff 0f 0b e8 a5 17 b2 ff <0f> 0b 0f 1f 00 55 48 89 e5 41 56 53 48 89 fb e8 91 17 b2 ff 4c 8d [ 22.923708][ T295] RSP: 0018:ffffc90000a17af0 EFLAGS: 00010293 [ 22.929530][ T295] RAX: ffffffff81be4f0b RBX: ffff888120ed0140 RCX: ffff88810d1562c0 [ 22.937377][ T295] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 22.945190][ T295] RBP: ffffc90000a17b58 R08: ffffffff81be489f R09: 0000000000000003 [ 22.952979][ T295] R10: fffff52000142f40 R11: dffffc0000000001 R12: ffff888120ed0cc0 [ 22.960852][ T295] R13: 1ffff110241da198 R14: ffff888109880d08 R15: dffffc0000000000 [ 22.968646][ T295] FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 22.977651][ T295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.984058][ T295] CR2: 000056192f59e4f0 CR3: 0000000006a0f000 CR4: 00000000003506b0 [ 22.991879][ T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.999666][ T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.007749][ T295] Kernel panic - not syncing: Fatal exception [ 23.013928][ T295] Kernel Offset: disabled [ 23.018058][ T295] Rebooting in 86400 seconds..