./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2633006126 <...> Warning: Permanently added '10.128.1.147' (ED25519) to the list of known hosts. execve("./syz-executor2633006126", ["./syz-executor2633006126"], 0x7ffe64fa0b80 /* 10 vars */) = 0 brk(NULL) = 0x555569697000 brk(0x555569697d00) = 0x555569697d00 arch_prctl(ARCH_SET_FS, 0x555569697380) = 0 set_tid_address(0x555569697650) = 323 set_robust_list(0x555569697660, 24) = 0 rseq(0x555569697ca0, 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-executor2633006126", 4096) = 28 getrandom("\x6e\x32\x30\xef\xc2\x6b\x05\x57", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555569697d00 brk(0x5555696b8d00) = 0x5555696b8d00 brk(0x5555696b9000) = 0x5555696b9000 mprotect(0x7f9e6c44e000, 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=0x555569697650) = 324 ./strace-static-x86_64: Process 324 attached [pid 324] set_robust_list(0x555569697660, 24) = 0 [pid 324] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 324] getppid() = 0 [pid 324] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 324] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 324] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 324] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 324] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 324] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 324] unshare(CLONE_NEWNS) = 0 [pid 324] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 324] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 324] unshare(CLONE_NEWCGROUP) = 0 [pid 324] unshare(CLONE_NEWUTS) = 0 [pid 324] unshare(CLONE_SYSVSEM) = 0 [pid 324] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 324] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 324] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 324] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 324] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 324] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 324] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 324] getpid() = 1 [pid 324] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 [ 57.745799][ T324] RSP: 0018:ffffc90000b07ad8 EFLAGS: 00010293 [ 57.751698][ T324] RAX: ffffffff81b42985 RBX: ffff888120902140 RCX: ffff88810d0662c0 [ 57.759505][ T324] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 57.767328][ T324] RBP: ffffc90000b07b58 R08: ffffffff81b422a3 R09: 0000000000000003 [ 57.775125][ T324] R10: fffff52000160f40 R11: dffffc0000000001 R12: 0000000000000001 [ 57.782937][ T324] R13: ffff88812091b220 R14: ffff888110ba5a30 R15: dffffc0000000000 [ 57.790749][ T324] FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 57.799516][ T324] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.805938][ T324] CR2: 00007f9e6c452130 CR3: 000000000660f000 CR4: 00000000003506a0 [ 57.813750][ T324] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 57.821558][ T324] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 57.829367][ T324] Call Trace: [ 57.832513][ T324] ? __die_body+0x62/0xb0 [ 57.836660][ T324] ? die+0x88/0xb0 [ 57.840224][ T324] ? do_trap+0x1a4/0x310 [ 57.844300][ T324] ? may_delete+0x755/0x760 [ 57.848640][ T324] ? handle_invalid_op+0x95/0xc0 [ 57.853425][ T324] ? may_delete+0x755/0x760 [ 57.857751][ T324] ? exc_invalid_op+0x32/0x50 [ 57.862266][ T324] ? asm_exc_invalid_op+0x12/0x20 [ 57.867128][ T324] ? may_delete+0x73/0x760 [ 57.871380][ T324] ? may_delete+0x755/0x760 [ 57.875718][ T324] ? may_delete+0x755/0x760 [ 57.880059][ T324] ? may_delete+0x755/0x760 [ 57.884400][ T324] vfs_rmdir+0x2c/0x3f0 [ 57.888391][ T324] incfs_kill_sb+0x108/0x220 [ 57.892817][ T324] deactivate_locked_super+0xad/0x110 [ 57.898024][ T324] deactivate_super+0xbe/0xf0 [ 57.902536][ T324] cleanup_mnt+0x45c/0x510 [ 57.906790][ T324] __cleanup_mnt+0x19/0x20 [ 57.911043][ T324] task_work_run+0x129/0x190 [ 57.915469][ T324] do_exit+0xc83/0x2a50 [ 57.919465][ T324] ? put_task_struct+0x80/0x80 [ 57.924060][ T324] ? _raw_spin_unlock_irq+0x4e/0x70 [ 57.929100][ T324] ? ptrace_notify+0x24c/0x350 [ 57.933694][ T324] ? do_notify_parent+0xa10/0xa10 [ 57.938557][ T324] ? debug_smp_processor_id+0x17/0x20 [ 57.943763][ T324] ? fpregs_assert_state_consistent+0xb6/0xe0 [ 57.949664][ T324] do_group_exit+0x141/0x310 [ 57.954091][ T324] __x64_sys_exit_group+0x3f/0x40 [ 57.958948][ T324] do_syscall_64+0x34/0x70 [ 57.963203][ T324] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 57.968930][ T324] RIP: 0033:0x7f9e6c3d7ec9 [ 57.973181][ T324] Code: Unable to access opcode bytes at RIP 0x7f9e6c3d7e9f. [ 57.980387][ T324] RSP: 002b:00007ffce1219c48 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 57.988631][ T324] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f9e6c3d7ec9 [ 57.996441][ T324] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 58.004252][ T324] RBP: 00007f9e6c454370 R08: ffffffffffffffb8 R09: 0000000000000006 [ 58.012065][ T324] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9e6c454370 [ 58.019875][ T324] R13: 0000000000000000 R14: 00007f9e6c4550e0 R15: 00007f9e6c3a6190 [ 58.027686][ T324] Modules linked in: [ 58.031526][ T324] ---[ end trace 75733a235658bb99 ]--- [ 58.036748][ T324] RIP: 0010:may_delete+0x755/0x760 [ 58.041726][ T324] Code: 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c db fd ff ff 4c 89 ef e8 6c 30 f4 ff e9 ce fd ff ff e8 02 95 b6 ff 0f 0b e8 fb 94 b6 ff <0f> 0b 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 [ 58.061119][ T324] RSP: 0018:ffffc90000b07ad8 EFLAGS: 00010293 [ 58.067032][ T324] RAX: ffffffff81b42985 RBX: ffff888120902140 RCX: ffff88810d0662c0 [ 58.074816][ T324] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 58.082651][ T324] RBP: ffffc90000b07b58 R08: ffffffff81b422a3 R09: 0000000000000003 [ 58.090458][ T324] R10: fffff52000160f40 R11: dffffc0000000001 R12: 0000000000000001 [ 58.098271][ T324] R13: ffff88812091b220 R14: ffff888110ba5a30 R15: dffffc0000000000 [ 58.106065][ T324] FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 58.114859][ T324] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 58.121265][ T324] CR2: 00007f9e6c452130 CR3: 000000000660f000 CR4: 00000000003506a0 [ 58.129085][ T324] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 58.136869][ T324] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 58.144710][ T324] Kernel panic - not syncing: Fatal exception [ 58.150666][ T324] Kernel Offset: disabled [ 58.154753][ T324] Rebooting in 86400 seconds..