./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1508993896 <...> Warning: Permanently added '10.128.0.190' (ED25519) to the list of known hosts. execve("./syz-executor1508993896", ["./syz-executor1508993896"], 0x7ffd7f3a61c0 /* 10 vars */) = 0 brk(NULL) = 0x555556252000 brk(0x555556252d00) = 0x555556252d00 arch_prctl(ARCH_SET_FS, 0x555556252380) = 0 set_tid_address(0x555556252650) = 296 set_robust_list(0x555556252660, 24) = 0 rseq(0x555556252ca0, 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-executor1508993896", 4096) = 28 getrandom("\x17\xb8\x00\x36\xf9\xf8\x43\x5b", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556252d00 brk(0x555556273d00) = 0x555556273d00 brk(0x555556274000) = 0x555556274000 mprotect(0x7fc7fcbcd000, 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=0x555556252650) = 297 ./strace-static-x86_64: Process 297 attached [pid 297] set_robust_list(0x555556252660, 24) = 0 [pid 297] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 297] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 297] setsid() = 1 [pid 297] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 297] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 297] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 297] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 297] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 297] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 297] unshare(CLONE_NEWNS) = 0 [pid 297] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 297] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 297] unshare(CLONE_NEWCGROUP) = 0 [pid 297] unshare(CLONE_NEWUTS) = 0 [pid 297] unshare(CLONE_SYSVSEM) = 0 [pid 297] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 297] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 297] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 297] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 297] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 297] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 297] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 297] getpid() = 1 [pid 297] 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 b1 64 ac ff 4c 8d [ 24.501562][ T297] RSP: 0018:ffffc90000d07a58 EFLAGS: 00010293 [ 24.507553][ T297] RAX: ffffffff81c9210b RBX: ffff8881205679c0 RCX: ffff8881095f6540 [ 24.515363][ T297] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 24.523175][ T297] RBP: ffffc90000d07ac0 R08: ffffffff81c91a9f R09: 0000000000000003 [ 24.530985][ T297] R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff888120567000 [ 24.538990][ T297] R13: 1ffff110240ace00 R14: ffff888100574608 R15: dffffc0000000000 [ 24.546807][ T297] FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 24.555563][ T297] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.561985][ T297] CR2: 00007fc7fcbd1130 CR3: 0000000006e0f000 CR4: 00000000003506b0 [ 24.569800][ T297] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.577609][ T297] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.585419][ T297] Call Trace: [ 24.588544][ T297] [ 24.591322][ T297] ? __die_body+0x62/0xb0 [ 24.595486][ T297] ? die+0x88/0xb0 [ 24.599050][ T297] ? do_trap+0x103/0x330 [ 24.603128][ T297] ? may_delete+0x6eb/0x6f0 [ 24.607468][ T297] ? handle_invalid_op+0x95/0xc0 [ 24.612324][ T297] ? may_delete+0x6eb/0x6f0 [ 24.616676][ T297] ? exc_invalid_op+0x32/0x50 [ 24.621178][ T297] ? asm_exc_invalid_op+0x1b/0x20 [ 24.626051][ T297] ? may_delete+0x7f/0x6f0 [ 24.630290][ T297] ? may_delete+0x6eb/0x6f0 [ 24.634629][ T297] ? may_delete+0x6eb/0x6f0 [ 24.638971][ T297] ? may_delete+0x6eb/0x6f0 [ 24.643309][ T297] vfs_rmdir+0x32/0x500 [ 24.647302][ T297] ? generic_shutdown_super+0x2b8/0x370 [ 24.652684][ T297] incfs_kill_sb+0x113/0x230 [ 24.657115][ T297] deactivate_locked_super+0xad/0x110 [ 24.662330][ T297] deactivate_super+0xbe/0xf0 [ 24.666831][ T297] cleanup_mnt+0x485/0x510 [ 24.671084][ T297] __cleanup_mnt+0x19/0x20 [ 24.675336][ T297] task_work_run+0x24d/0x2e0 [ 24.679763][ T297] ? kmem_cache_free+0x291/0x510 [ 24.684536][ T297] ? task_work_cancel+0x2b0/0x2b0 [ 24.689397][ T297] ? free_nsproxy+0x20d/0x260 [ 24.693911][ T297] ? exit_task_namespaces+0xb4/0xd0 [ 24.698944][ T297] do_exit+0xbd5/0x2b80 [ 24.702936][ T297] ? put_task_struct+0x80/0x80 [ 24.707538][ T297] ? __kasan_check_write+0x14/0x20 [ 24.712482][ T297] ? _raw_spin_lock_irq+0xa5/0x1b0 [ 24.717430][ T297] ? _raw_spin_lock_irqsave+0x210/0x210 [ 24.722810][ T297] ? zap_other_threads+0x29c/0x2d0 [ 24.727763][ T297] do_group_exit+0x21a/0x2d0 [ 24.732281][ T297] __x64_sys_exit_group+0x3f/0x40 [ 24.737133][ T297] do_syscall_64+0x3d/0xb0 [ 24.741388][ T297] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 24.747132][ T297] RIP: 0033:0x7fc7fcb56e09 [ 24.751384][ T297] Code: Unable to access opcode bytes at 0x7fc7fcb56ddf. [ 24.758221][ T297] RSP: 002b:00007ffd387e1608 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 24.766467][ T297] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fc7fcb56e09 [ 24.774278][ T297] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 24.782176][ T297] RBP: 00007fc7fcbd3370 R08: ffffffffffffffb8 R09: 0000000000000006 [ 24.789992][ T297] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc7fcbd3370 [ 24.797799][ T297] R13: 0000000000000000 R14: 00007fc7fcbd40e0 R15: 00007fc7fcb250d0 [ 24.805625][ T297] [ 24.808881][ T297] Modules linked in: [ 24.812689][ T297] ---[ end trace 0000000000000000 ]--- [ 24.817902][ T297] RIP: 0010:may_delete+0x6eb/0x6f0 [ 24.822820][ T297] Code: 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 7f fe ff ff 4c 89 e7 e8 66 71 f3 ff e9 72 fe ff ff e8 cc 64 ac ff 0f 0b e8 c5 64 ac ff <0f> 0b 0f 1f 00 55 48 89 e5 41 56 53 48 89 fb e8 b1 64 ac ff 4c 8d [ 24.842336][ T297] RSP: 0018:ffffc90000d07a58 EFLAGS: 00010293 [ 24.848191][ T297] RAX: ffffffff81c9210b RBX: ffff8881205679c0 RCX: ffff8881095f6540 [ 24.856060][ T297] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 24.863944][ T297] RBP: ffffc90000d07ac0 R08: ffffffff81c91a9f R09: 0000000000000003 [ 24.871726][ T297] R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff888120567000 [ 24.879830][ T297] R13: 1ffff110240ace00 R14: ffff888100574608 R15: dffffc0000000000 [ 24.887671][ T297] FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 24.896485][ T297] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.902942][ T297] CR2: 00007fc7fcbd1130 CR3: 0000000006e0f000 CR4: 00000000003506b0 [ 24.910719][ T297] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.918531][ T297] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.926330][ T297] Kernel panic - not syncing: Fatal exception [ 24.932427][ T297] Kernel Offset: disabled [ 24.936550][ T297] Rebooting in 86400 seconds..