./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1767094158 <...> Warning: Permanently added '10.128.1.64' (ED25519) to the list of known hosts. execve("./syz-executor1767094158", ["./syz-executor1767094158"], 0x7fffbab24420 /* 10 vars */) = 0 brk(NULL) = 0x555556f58000 brk(0x555556f58d00) = 0x555556f58d00 arch_prctl(ARCH_SET_FS, 0x555556f58380) = 0 set_tid_address(0x555556f58650) = 297 set_robust_list(0x555556f58660, 24) = 0 rseq(0x555556f58ca0, 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-executor1767094158", 4096) = 28 getrandom("\xc9\xf8\x45\x68\x1c\x18\x85\x84", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556f58d00 brk(0x555556f79d00) = 0x555556f79d00 brk(0x555556f7a000) = 0x555556f7a000 mprotect(0x7f5d868a2000, 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=0x555556f58650) = 298 ./strace-static-x86_64: Process 298 attached [pid 298] set_robust_list(0x555556f58660, 24) = 0 [pid 298] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 298] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 298] setsid() = 1 [pid 298] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 298] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 298] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 298] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 298] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 298] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 298] unshare(CLONE_NEWNS) = 0 [pid 298] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 298] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 298] unshare(CLONE_NEWCGROUP) = 0 [pid 298] unshare(CLONE_NEWUTS) = 0 [pid 298] unshare(CLONE_SYSVSEM) = 0 [pid 298] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 298] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 298] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 298] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 298] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 298] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 298] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 298] getpid() = 1 [pid 298] 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 [ 27.186043][ T298] RSP: 0018:ffffc90000dd7a58 EFLAGS: 00010293 [ 27.191945][ T298] RAX: ffffffff81c9210b RBX: ffff88811fd83360 RCX: ffff888108d93cc0 [ 27.199755][ T298] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 27.207568][ T298] RBP: ffffc90000dd7ac0 R08: ffffffff81c91a9f R09: 0000000000000003 [ 27.215380][ T298] R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff88811fc51000 [ 27.223190][ T298] R13: 1ffff11023f8a200 R14: ffff8881005862a0 R15: dffffc0000000000 [ 27.231018][ T298] FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 27.239767][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.246191][ T298] CR2: 00007f5d868a6130 CR3: 000000010fe56000 CR4: 00000000003506b0 [ 27.254007][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.261826][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.269625][ T298] Call Trace: [ 27.272757][ T298] [ 27.275530][ T298] ? __die_body+0x62/0xb0 [ 27.279696][ T298] ? die+0x88/0xb0 [ 27.283251][ T298] ? do_trap+0x103/0x330 [ 27.287331][ T298] ? may_delete+0x6eb/0x6f0 [ 27.291669][ T298] ? handle_invalid_op+0x95/0xc0 [ 27.296444][ T298] ? may_delete+0x6eb/0x6f0 [ 27.300782][ T298] ? exc_invalid_op+0x32/0x50 [ 27.305297][ T298] ? asm_exc_invalid_op+0x1b/0x20 [ 27.310157][ T298] ? may_delete+0x7f/0x6f0 [ 27.314412][ T298] ? may_delete+0x6eb/0x6f0 [ 27.318750][ T298] ? may_delete+0x6eb/0x6f0 [ 27.323090][ T298] ? may_delete+0x6eb/0x6f0 [ 27.327430][ T298] vfs_rmdir+0x32/0x500 [ 27.331418][ T298] ? generic_shutdown_super+0x2b8/0x370 [ 27.336802][ T298] incfs_kill_sb+0x113/0x230 [ 27.341228][ T298] deactivate_locked_super+0xad/0x110 [ 27.346436][ T298] deactivate_super+0xbe/0xf0 [ 27.350948][ T298] cleanup_mnt+0x485/0x510 [ 27.355203][ T298] __cleanup_mnt+0x19/0x20 [ 27.359456][ T298] task_work_run+0x24d/0x2e0 [ 27.363990][ T298] ? kmem_cache_free+0x291/0x510 [ 27.368764][ T298] ? task_work_cancel+0x2b0/0x2b0 [ 27.373739][ T298] ? free_nsproxy+0x20d/0x260 [ 27.378256][ T298] ? exit_task_namespaces+0xb4/0xd0 [ 27.383287][ T298] do_exit+0xbd5/0x2b80 [ 27.387286][ T298] ? put_task_struct+0x80/0x80 [ 27.391882][ T298] ? __kasan_check_write+0x14/0x20 [ 27.396827][ T298] ? _raw_spin_lock_irq+0xa5/0x1b0 [ 27.401777][ T298] ? _raw_spin_lock_irqsave+0x210/0x210 [ 27.407191][ T298] ? zap_other_threads+0x29c/0x2d0 [ 27.412106][ T298] do_group_exit+0x21a/0x2d0 [ 27.416534][ T298] __x64_sys_exit_group+0x3f/0x40 [ 27.421391][ T298] do_syscall_64+0x3d/0xb0 [ 27.425643][ T298] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 27.431370][ T298] RIP: 0033:0x7f5d8682be09 [ 27.435624][ T298] Code: Unable to access opcode bytes at 0x7f5d8682bddf. [ 27.442481][ T298] RSP: 002b:00007ffd637e8bf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 27.450725][ T298] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f5d8682be09 [ 27.458537][ T298] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 27.466349][ T298] RBP: 00007f5d868a8370 R08: ffffffffffffffb8 R09: 0000000000000006 [ 27.474164][ T298] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5d868a8370 [ 27.481974][ T298] R13: 0000000000000000 R14: 00007f5d868a90e0 R15: 00007f5d867fa0d0 [ 27.489824][ T298] [ 27.492655][ T298] Modules linked in: [ 27.496482][ T298] ---[ end trace 0000000000000000 ]--- [ 27.501694][ T298] RIP: 0010:may_delete+0x6eb/0x6f0 [ 27.506621][ T298] 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 [ 27.526093][ T298] RSP: 0018:ffffc90000dd7a58 EFLAGS: 00010293 [ 27.531988][ T298] RAX: ffffffff81c9210b RBX: ffff88811fd83360 RCX: ffff888108d93cc0 [ 27.539809][ T298] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 27.547611][ T298] RBP: ffffc90000dd7ac0 R08: ffffffff81c91a9f R09: 0000000000000003 [ 27.555408][ T298] R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff88811fc51000 [ 27.563332][ T298] R13: 1ffff11023f8a200 R14: ffff8881005862a0 R15: dffffc0000000000 [ 27.571160][ T298] FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 27.579893][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.586297][ T298] CR2: 00007f5d868a6130 CR3: 000000010fe56000 CR4: 00000000003506b0 [ 27.594138][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.601934][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.609760][ T298] Kernel panic - not syncing: Fatal exception [ 27.616025][ T298] Kernel Offset: disabled [ 27.620155][ T298] Rebooting in 86400 seconds..