./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor315417025 <...> Warning: Permanently added '10.128.0.97' (ED25519) to the list of known hosts. execve("./syz-executor315417025", ["./syz-executor315417025"], 0x7ffcdfcb5af0 /* 10 vars */) = 0 brk(NULL) = 0x555567506000 brk(0x555567506d00) = 0x555567506d00 arch_prctl(ARCH_SET_FS, 0x555567506380) = 0 set_tid_address(0x555567506650) = 299 set_robust_list(0x555567506660, 24) = 0 rseq(0x555567506ca0, 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-executor315417025", 4096) = 27 getrandom("\x84\xef\x5f\x2e\x4f\x28\xea\xb3", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555567506d00 brk(0x555567527d00) = 0x555567527d00 brk(0x555567528000) = 0x555567528000 mprotect(0x7f685932b000, 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./strace-static-x86_64: Process 300 attached , child_tidptr=0x555567506650) = 300 [pid 300] set_robust_list(0x555567506660, 24) = 0 [pid 300] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 300] getppid() = 0 [pid 300] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 300] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 300] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 300] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 300] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 300] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 300] unshare(CLONE_NEWNS) = 0 [pid 300] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 300] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 300] unshare(CLONE_NEWCGROUP) = 0 [pid 300] unshare(CLONE_NEWUTS) = 0 [pid 300] unshare(CLONE_SYSVSEM) = 0 [pid 300] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 300] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 300] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 300] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 300] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 300] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 300] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 300] getpid() = 1 [pid 300] 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 [ 27.969510][ T300] RSP: 0018:ffffc900009b7af0 EFLAGS: 00010293 [ 27.975406][ T300] RAX: ffffffff81be4f0b RBX: ffff888120e5a580 RCX: ffff88810c77e2c0 [ 27.983217][ T300] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 27.991029][ T300] RBP: ffffc900009b7b58 R08: ffffffff81be489f R09: 0000000000000003 [ 27.998839][ T300] R10: fffff52000136f40 R11: dffffc0000000001 R12: ffff888120e5c330 [ 28.006652][ T300] R13: 1ffff110241cb866 R14: ffff8881131718b8 R15: dffffc0000000000 [ 28.014466][ T300] FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 28.023234][ T300] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.029652][ T300] CR2: 00007f685932f130 CR3: 0000000006a0f000 CR4: 00000000003506b0 [ 28.037474][ T300] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.045283][ T300] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.053094][ T300] Call Trace: [ 28.056212][ T300] [ 28.059158][ T300] ? __die_body+0x62/0xb0 [ 28.063322][ T300] ? die+0x88/0xb0 [ 28.066877][ T300] ? do_trap+0x103/0x330 [ 28.070958][ T300] ? may_delete+0x6eb/0x6f0 [ 28.075422][ T300] ? handle_invalid_op+0x95/0xc0 [ 28.080190][ T300] ? may_delete+0x6eb/0x6f0 [ 28.084529][ T300] ? exc_invalid_op+0x32/0x50 [ 28.089039][ T300] ? asm_exc_invalid_op+0x1b/0x20 [ 28.093901][ T300] ? may_delete+0x7f/0x6f0 [ 28.098152][ T300] ? may_delete+0x6eb/0x6f0 [ 28.102490][ T300] ? may_delete+0x6eb/0x6f0 [ 28.106834][ T300] vfs_rmdir+0x32/0x470 [ 28.110827][ T300] incfs_kill_sb+0x113/0x230 [ 28.115251][ T300] deactivate_locked_super+0xad/0x110 [ 28.120457][ T300] deactivate_super+0xbe/0xf0 [ 28.124970][ T300] cleanup_mnt+0x45c/0x510 [ 28.129226][ T300] __cleanup_mnt+0x19/0x20 [ 28.133475][ T300] task_work_run+0x129/0x190 [ 28.137904][ T300] do_exit+0xc48/0x2ca0 [ 28.141909][ T300] ? put_task_struct+0x80/0x80 [ 28.146495][ T300] ? _raw_spin_unlock_irq+0x4e/0x70 [ 28.151527][ T300] ? ptrace_notify+0x24c/0x350 [ 28.156131][ T300] ? do_notify_parent+0xa30/0xa30 [ 28.160993][ T300] do_group_exit+0x141/0x310 [ 28.165418][ T300] __x64_sys_exit_group+0x3f/0x40 [ 28.170277][ T300] x64_sys_call+0x610/0x9a0 [ 28.174614][ T300] do_syscall_64+0x3b/0xb0 [ 28.178867][ T300] ? clear_bhb_loop+0x35/0x90 [ 28.183383][ T300] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 28.189111][ T300] RIP: 0033:0x7f68592b4ec9 [ 28.193363][ T300] Code: Unable to access opcode bytes at RIP 0x7f68592b4e9f. [ 28.200572][ T300] RSP: 002b:00007ffe4933b3f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 28.208814][ T300] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f68592b4ec9 [ 28.216735][ T300] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 28.224541][ T300] RBP: 00007f6859331370 R08: ffffffffffffffb8 R09: 0000000000000006 [ 28.232352][ T300] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6859331370 [ 28.240162][ T300] R13: 0000000000000000 R14: 00007f68593320e0 R15: 00007f6859283190 [ 28.247982][ T300] [ 28.250840][ T300] Modules linked in: [ 28.254982][ T300] ---[ end trace 15d7f7ff24422fef ]--- [ 28.260492][ T300] RIP: 0010:may_delete+0x6eb/0x6f0 [ 28.265441][ T300] 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 [ 28.284955][ T300] RSP: 0018:ffffc900009b7af0 EFLAGS: 00010293 [ 28.290808][ T300] RAX: ffffffff81be4f0b RBX: ffff888120e5a580 RCX: ffff88810c77e2c0 [ 28.298640][ T300] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 28.306393][ T300] RBP: ffffc900009b7b58 R08: ffffffff81be489f R09: 0000000000000003 [ 28.314329][ T300] R10: fffff52000136f40 R11: dffffc0000000001 R12: ffff888120e5c330 [ 28.322141][ T300] R13: 1ffff110241cb866 R14: ffff8881131718b8 R15: dffffc0000000000 [ 28.329941][ T300] FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 28.338764][ T300] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.345124][ T300] CR2: 00007f685932f130 CR3: 000000010c500000 CR4: 00000000003506b0 [ 28.352973][ T300] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.360785][ T300] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.368589][ T300] Kernel panic - not syncing: Fatal exception [ 28.374533][ T300] Kernel Offset: disabled [ 28.378607][ T300] Rebooting in 86400 seconds..