./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor471564002 <...> Warning: Permanently added '10.128.0.80' (ED25519) to the list of known hosts. execve("./syz-executor471564002", ["./syz-executor471564002"], 0x7fffdf06ce60 /* 10 vars */) = 0 brk(NULL) = 0x555556246000 brk(0x555556246d00) = 0x555556246d00 arch_prctl(ARCH_SET_FS, 0x555556246380) = 0 set_tid_address(0x555556246650) = 295 set_robust_list(0x555556246660, 24) = 0 rseq(0x555556246ca0, 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-executor471564002", 4096) = 27 getrandom("\x98\xba\x6c\xae\x72\x81\xf9\xa8", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556246d00 brk(0x555556267d00) = 0x555556267d00 brk(0x555556268000) = 0x555556268000 mprotect(0x7f06e2d7c000, 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=0x555556246650) = 296 ./strace-static-x86_64: Process 296 attached [pid 296] set_robust_list(0x555556246660, 24) = 0 [pid 296] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 296] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 296] setsid() = 1 [pid 296] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 296] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 296] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 296] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 296] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 296] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 296] unshare(CLONE_NEWNS) = 0 [pid 296] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 296] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 296] unshare(CLONE_NEWCGROUP) = 0 [pid 296] unshare(CLONE_NEWUTS) = 0 [pid 296] unshare(CLONE_SYSVSEM) = 0 [pid 296] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 296] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 296] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 296] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 296] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 296] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 296] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 296] getpid() = 1 [pid 296] 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 [ 23.642079][ T296] RSP: 0018:ffffc90000c27a58 EFLAGS: 00010293 [ 23.647978][ T296] RAX: ffffffff81c9210b RBX: ffff88811f95a030 RCX: ffff8881095a1440 [ 23.655790][ T296] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 23.663604][ T296] RBP: ffffc90000c27ac0 R08: ffffffff81c91a9f R09: 0000000000000003 [ 23.671412][ T296] R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff88811f97f880 [ 23.679223][ T296] R13: 1ffff11023f2ff10 R14: ffff88810bc2af28 R15: dffffc0000000000 [ 23.687034][ T296] FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 23.695803][ T296] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.702225][ T296] CR2: 0000559259477120 CR3: 000000010993b000 CR4: 00000000003506b0 [ 23.710038][ T296] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.717857][ T296] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.725661][ T296] Call Trace: [ 23.728788][ T296] [ 23.731565][ T296] ? __die_body+0x62/0xb0 [ 23.735728][ T296] ? die+0x88/0xb0 [ 23.739286][ T296] ? do_trap+0x103/0x330 [ 23.743372][ T296] ? may_delete+0x6eb/0x6f0 [ 23.747706][ T296] ? handle_invalid_op+0x95/0xc0 [ 23.752480][ T296] ? may_delete+0x6eb/0x6f0 [ 23.756820][ T296] ? exc_invalid_op+0x32/0x50 [ 23.761354][ T296] ? asm_exc_invalid_op+0x1b/0x20 [ 23.766193][ T296] ? may_delete+0x7f/0x6f0 [ 23.770567][ T296] ? may_delete+0x6eb/0x6f0 [ 23.774917][ T296] ? may_delete+0x6eb/0x6f0 [ 23.779241][ T296] ? may_delete+0x6eb/0x6f0 [ 23.783586][ T296] vfs_rmdir+0x32/0x500 [ 23.787574][ T296] ? generic_shutdown_super+0x2b8/0x370 [ 23.792958][ T296] incfs_kill_sb+0x113/0x230 [ 23.797383][ T296] deactivate_locked_super+0xad/0x110 [ 23.802588][ T296] deactivate_super+0xbe/0xf0 [ 23.807100][ T296] cleanup_mnt+0x485/0x510 [ 23.811354][ T296] __cleanup_mnt+0x19/0x20 [ 23.815607][ T296] task_work_run+0x24d/0x2e0 [ 23.820043][ T296] ? kmem_cache_free+0x291/0x510 [ 23.824814][ T296] ? task_work_cancel+0x2b0/0x2b0 [ 23.829668][ T296] ? free_nsproxy+0x20d/0x260 [ 23.834185][ T296] ? exit_task_namespaces+0xb4/0xd0 [ 23.839216][ T296] do_exit+0xbd5/0x2b80 [ 23.843209][ T296] ? put_task_struct+0x80/0x80 [ 23.847806][ T296] ? __kasan_check_write+0x14/0x20 [ 23.852755][ T296] ? _raw_spin_lock_irq+0xa5/0x1b0 [ 23.857701][ T296] ? _raw_spin_lock_irqsave+0x210/0x210 [ 23.863084][ T296] ? zap_other_threads+0x29c/0x2d0 [ 23.868032][ T296] do_group_exit+0x21a/0x2d0 [ 23.872460][ T296] __x64_sys_exit_group+0x3f/0x40 [ 23.877333][ T296] do_syscall_64+0x3d/0xb0 [ 23.881571][ T296] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 23.887300][ T296] RIP: 0033:0x7f06e2d05e09 [ 23.891554][ T296] Code: Unable to access opcode bytes at 0x7f06e2d05ddf. [ 23.898411][ T296] RSP: 002b:00007fffa8720db8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 23.906655][ T296] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f06e2d05e09 [ 23.914465][ T296] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 23.922276][ T296] RBP: 00007f06e2d82370 R08: ffffffffffffffb8 R09: 0000000000000006 [ 23.930088][ T296] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f06e2d82370 [ 23.937899][ T296] R13: 0000000000000000 R14: 00007f06e2d830e0 R15: 00007f06e2cd40d0 [ 23.945716][ T296] [ 23.948584][ T296] Modules linked in: [ 23.952512][ T296] ---[ end trace 0000000000000000 ]--- [ 23.957778][ T296] RIP: 0010:may_delete+0x6eb/0x6f0 [ 23.962768][ T296] 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 [ 23.982445][ T296] RSP: 0018:ffffc90000c27a58 EFLAGS: 00010293 [ 23.988359][ T296] RAX: ffffffff81c9210b RBX: ffff88811f95a030 RCX: ffff8881095a1440 [ 23.996222][ T296] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 24.003993][ T296] RBP: ffffc90000c27ac0 R08: ffffffff81c91a9f R09: 0000000000000003 [ 24.011806][ T296] R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff88811f97f880 [ 24.019601][ T296] R13: 1ffff11023f2ff10 R14: ffff88810bc2af28 R15: dffffc0000000000 [ 24.027396][ T296] FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 24.036191][ T296] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.042616][ T296] CR2: 0000559259477120 CR3: 000000010993b000 CR4: 00000000003506b0 [ 24.050427][ T296] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.058213][ T296] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.066055][ T296] Kernel panic - not syncing: Fatal exception [ 24.073039][ T296] Kernel Offset: disabled [ 24.077167][ T296] Rebooting in 86400 seconds..