[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 19.803642] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 23.745800] random: sshd: uninitialized urandom read (32 bytes read) [ 23.965778] random: sshd: uninitialized urandom read (32 bytes read) [ 24.686795] random: sshd: uninitialized urandom read (32 bytes read) [ 42.099914] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.22' (ECDSA) to the list of known hosts. [ 47.598803] random: sshd: uninitialized urandom read (32 bytes read) [ 47.700850] IPVS: ftp: loaded support on port[0] = 21 [ 47.700856] IPVS: ftp: loaded support on port[0] = 21 [ 47.714795] IPVS: ftp: loaded support on port[0] = 21 [ 47.718373] IPVS: ftp: loaded support on port[0] = 21 [ 47.723158] IPVS: ftp: loaded support on port[0] = 21 [ 47.726317] IPVS: ftp: loaded support on port[0] = 21 [ 47.736890] IPVS: ftp: loaded support on port[0] = 21 [ 47.742582] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program [ 47.819300] FAT-fs (loop3): bogus number of reserved sectors [ 47.825217] FAT-fs (loop3): Can't find a valid FAT filesystem [ 47.848124] FAT-fs (loop2): bogus number of reserved sectors [ 47.854041] FAT-fs (loop2): Can't find a valid FAT filesystem [ 47.861240] FAULT_INJECTION: forcing a failure. executing program [ 47.861240] name failslab, interval 1, probability 0, space 0, times 1 [ 47.872628] CPU: 0 PID: 4542 Comm: syz-executor023 Not tainted 4.17.0-rc5+ #54 [ 47.876743] FAT-fs (loop4): bogus number of reserved sectors [ 47.879972] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.880008] Call Trace: [ 47.880026] dump_stack+0x1b9/0x294 [ 47.880041] ? dump_stack_print_info.cold.2+0x52/0x52 [ 47.880063] should_fail.cold.4+0xa/0x1a [ 47.885890] FAT-fs (loop4): Can't find a valid FAT filesystem executing program executing program executing program [ 47.895232] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 47.895253] ? graph_lock+0x170/0x170 [ 47.895272] ? find_held_lock+0x36/0x1c0 [ 47.905980] FAT-fs (loop5): bogus number of reserved sectors [ 47.906621] ? __lock_is_held+0xb5/0x140 [ 47.906647] ? check_same_owner+0x320/0x320 [ 47.906665] ? rcu_note_context_switch+0x710/0x710 [ 47.910751] FAT-fs (loop5): Can't find a valid FAT filesystem [ 47.916599] __should_failslab+0x124/0x180 [ 47.916614] should_failslab+0x9/0x14 [ 47.916626] kmem_cache_alloc_trace+0x2cb/0x780 [ 47.916635] ? lock_acquire+0x1dc/0x520 [ 47.916648] ? __lock_acquire+0x7f5/0x5140 [ 47.916663] perf_event_alloc.part.91+0x195/0x3090 [ 47.916674] ? perf_trace_run_bpf_submit+0x23f/0x370 [ 47.916692] ? find_get_context.isra.92+0x720/0x720 [ 47.916704] ? perf_tp_event+0xc30/0xc30 [ 47.916713] ? kasan_check_write+0x14/0x20 [ 47.916725] ? __mutex_lock+0x7d9/0x17f0 [ 47.916734] ? perf_tp_event+0xc30/0xc30 [ 47.916746] ? expand_files.part.8+0x56f/0x9a0 [ 47.916756] ? __do_sys_perf_event_open+0x129f/0x2fa0 [ 47.916770] ? memset+0x31/0x40 [ 47.916783] ? perf_trace_lock+0x495/0x900 [ 47.916795] ? perf_trace_lock+0x495/0x900 [ 47.916808] ? zap_class+0x720/0x720 [ 47.916818] ? zap_class+0x720/0x720 [ 47.916832] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 47.916841] ? graph_lock+0x170/0x170 [ 47.916852] ? graph_lock+0x170/0x170 [ 47.916868] ? _raw_spin_unlock+0x22/0x30 [ 47.916883] ? find_held_lock+0x36/0x1c0 [ 47.916903] ? lock_downgrade+0x8e0/0x8e0 [ 47.940796] FAT-fs (loop0): bogus number of reserved sectors [ 47.943921] ? kasan_check_read+0x11/0x20 [ 47.943933] ? do_raw_spin_unlock+0x9e/0x2e0 [ 47.943944] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 47.943956] ? ptrace_getsiginfo+0x190/0x190 [ 47.943966] ? kasan_check_write+0x14/0x20 [ 47.943976] ? do_raw_spin_lock+0xc1/0x200 [ 47.943997] __do_sys_perf_event_open+0xa8a/0x2fa0 [ 47.949042] FAT-fs (loop0): Can't find a valid FAT filesystem [ 47.954890] ? __vfs_write+0x113/0x960 [ 47.954915] ? perf_event_set_output+0x660/0x660 [ 47.954929] ? fsnotify+0xfc0/0xfc0 [ 47.954945] ? fsnotify_first_mark+0x330/0x330 [ 47.974099] FAT-fs (loop6): bogus number of reserved sectors [ 47.975765] ? rw_verify_area+0x118/0x360 [ 47.975778] ? vfs_write+0x2a8/0x560 [ 47.975810] ? syscall_slow_exit_work+0x4f0/0x4f0 [ 47.980765] FAT-fs (loop6): Can't find a valid FAT filesystem [ 47.985846] __x64_sys_perf_event_open+0xbe/0x150 [ 47.985857] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 47.985870] do_syscall_64+0x1b1/0x800 [ 47.985885] ? syscall_return_slowpath+0x5c0/0x5c0 [ 47.998970] FAT-fs (loop7): bogus number of reserved sectors [ 47.999158] ? syscall_return_slowpath+0x30f/0x5c0 [ 47.999175] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 47.999194] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 48.003292] FAT-fs (loop7): Can't find a valid FAT filesystem [ 48.007309] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.007319] RIP: 0033:0x441259 [ 48.007324] RSP: 002b:00007ffc662c71c8 EFLAGS: 00000207 ORIG_RAX: 000000000000012a [ 48.007336] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441259 [ 48.007342] RDX: 00000000ffffffff RSI: 0000000000000000 RDI: 0000000020000140 executing program executing program executing program executing program [ 48.007348] RBP: 00007ffc662c71e0 R08: 0000000000000000 R09: 0000000000000000 [ 48.007354] R10: 00000000ffffffff R11: 0000000000000207 R12: 0000000000000004 [ 48.007366] R13: 0000000000000004 R14: 0030656c69662f2e R15: 0000000000000000 [ 48.017772] FAT-fs (loop1): bogus number of reserved sectors [ 48.022678] FAT-fs (loop3): bogus number of reserved sectors [ 48.024684] FAT-fs (loop1): Can't find a valid FAT filesystem [ 48.028942] FAT-fs (loop3): Can't find a valid FAT filesystem [ 48.290870] FAULT_INJECTION: forcing a failure. [ 48.290870] name failslab, interval 1, probability 0, space 0, times 0 [ 48.302144] CPU: 1 PID: 4539 Comm: syz-executor023 Not tainted 4.17.0-rc5+ #54 [ 48.302180] FAULT_INJECTION: forcing a failure. [ 48.302180] name failslab, interval 1, probability 0, space 0, times 0 [ 48.309496] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.309502] Call Trace: [ 48.309524] dump_stack+0x1b9/0x294 [ 48.309539] ? dump_stack_print_info.cold.2+0x52/0x52 [ 48.309562] should_fail.cold.4+0xa/0x1a [ 48.345514] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 48.350623] ? perf_tp_event+0x91f/0xc30 [ 48.354676] ? find_held_lock+0x36/0x1c0 [ 48.358747] ? check_same_owner+0x320/0x320 [ 48.363056] ? rcu_note_context_switch+0x710/0x710 [ 48.367971] ? memset+0x31/0x40 [ 48.371238] __should_failslab+0x124/0x180 [ 48.375474] should_failslab+0x9/0x14 [ 48.379258] kmem_cache_alloc+0x2af/0x760 [ 48.383401] ? perf_trace_run_bpf_submit+0x246/0x370 [ 48.388496] get_empty_filp+0x125/0x520 [ 48.392456] ? proc_nr_files+0x60/0x60 [ 48.396331] ? memset+0x31/0x40 [ 48.399611] ? perf_trace_lock+0x495/0x900 [ 48.403845] path_openat+0x116/0x4e20 [ 48.407650] ? unwind_get_return_address+0x61/0xa0 [ 48.412567] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 48.417571] ? path_lookupat.isra.44+0xbd0/0xbd0 [ 48.422326] ? find_held_lock+0x36/0x1c0 [ 48.426392] ? lock_downgrade+0x8e0/0x8e0 [ 48.430533] ? do_sys_open+0x39a/0x740 [ 48.434411] ? kasan_check_read+0x11/0x20 [ 48.438546] ? do_raw_spin_unlock+0x9e/0x2e0 [ 48.442943] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 48.447512] ? __lock_is_held+0xb5/0x140 [ 48.451579] ? _raw_spin_unlock+0x22/0x30 [ 48.455714] ? __alloc_fd+0x346/0x700 [ 48.459498] ? usercopy_warn+0x120/0x120 [ 48.463557] do_filp_open+0x249/0x350 [ 48.467343] ? may_open_dev+0x100/0x100 [ 48.471301] ? strncpy_from_user+0x3b6/0x500 [ 48.475705] ? mpi_free.cold.1+0x19/0x19 [ 48.479758] ? get_unused_fd_flags+0x121/0x190 [ 48.484324] ? getname_flags+0xd0/0x5a0 [ 48.488295] ? getname_flags+0x26e/0x5a0 [ 48.492349] do_sys_open+0x56f/0x740 [ 48.496070] ? filp_open+0x80/0x80 [ 48.499637] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.505197] ? do_sys_ftruncate+0x44e/0x560 [ 48.509541] __x64_sys_open+0x7e/0xc0 [ 48.513359] do_syscall_64+0x1b1/0x800 [ 48.517266] ? syscall_return_slowpath+0x5c0/0x5c0 [ 48.522206] ? syscall_return_slowpath+0x30f/0x5c0 [ 48.527137] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 48.532491] ? trace_hardirqs_off_thunk+0x1a/0x1c executing program [ 48.537336] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.542511] RIP: 0033:0x401690 [ 48.545685] RSP: 002b:00007ffc662c71c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 48.553381] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000401690 [ 48.560634] RDX: 00007ffc662c71ea RSI: 0000000000000002 RDI: 00007ffc662c71e0 [ 48.567887] RBP: 00007ffc662c71e0 R08: 0000000000000000 R09: 000000000000000a [ 48.575145] R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000004 [ 48.582398] R13: 0000000000000007 R14: 0030656c69662f2e R15: 0000000000000000 executing program [ 48.589678] CPU: 0 PID: 4542 Comm: syz-executor023 Not tainted 4.17.0-rc5+ #54 [ 48.593610] FAULT_INJECTION: forcing a failure. [ 48.593610] name failslab, interval 1, probability 0, space 0, times 0 [ 48.597043] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.597048] Call Trace: [ 48.597067] dump_stack+0x1b9/0x294 [ 48.597082] ? dump_stack_print_info.cold.2+0x52/0x52 [ 48.597108] should_fail.cold.4+0xa/0x1a [ 48.597128] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 48.638109] ? graph_lock+0x170/0x170 [ 48.641906] ? find_held_lock+0x36/0x1c0 [ 48.645977] ? __lock_is_held+0xb5/0x140 [ 48.650043] ? check_same_owner+0x320/0x320 [ 48.654356] ? kasan_check_write+0x14/0x20 [ 48.658580] ? __mutex_unlock_slowpath+0x180/0x8a0 [ 48.663504] ? rcu_note_context_switch+0x710/0x710 [ 48.668427] __should_failslab+0x124/0x180 [ 48.672650] should_failslab+0x9/0x14 [ 48.676447] kmem_cache_alloc+0x2af/0x760 [ 48.680582] ? __mutex_unlock_slowpath+0x180/0x8a0 [ 48.685513] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 48.690517] __kernfs_new_node+0xe7/0x580 [ 48.694655] ? kernfs_dop_revalidate+0x3c0/0x3c0 [ 48.699397] ? mutex_unlock+0xd/0x10 [ 48.703105] ? kernfs_activate+0x20e/0x2a0 [ 48.707340] ? kernfs_walk_and_get_ns+0x320/0x320 [ 48.712170] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 48.717690] ? kernfs_link_sibling+0x1d2/0x3b0 [ 48.722263] kernfs_new_node+0x80/0xf0 [ 48.726140] __kernfs_create_file+0x4d/0x330 [ 48.730540] sysfs_add_file_mode_ns+0x21a/0x560 [ 48.735202] internal_create_group+0x282/0x970 [ 48.739782] sysfs_create_group+0x1f/0x30 [ 48.743949] lo_ioctl+0x1771/0x2130 [ 48.747569] ? lo_rw_aio_complete+0x430/0x430 [ 48.752053] blkdev_ioctl+0x9b6/0x2020 [ 48.755930] ? __save_stack_trace+0x7e/0xd0 [ 48.760239] ? blkpg_ioctl+0xc40/0xc40 [ 48.764123] ? save_stack+0xa9/0xd0 [ 48.767737] ? save_stack+0x43/0xd0 [ 48.771349] ? __kasan_slab_free+0x11a/0x170 [ 48.775742] ? kasan_slab_free+0xe/0x10 [ 48.779699] ? kmem_cache_free+0x86/0x2d0 [ 48.783833] ? putname+0xf2/0x130 [ 48.787273] ? do_sys_open+0x554/0x740 [ 48.791145] ? __x64_sys_open+0x7e/0xc0 [ 48.795108] ? do_syscall_64+0x1b1/0x800 [ 48.799157] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.804510] ? kasan_check_read+0x11/0x20 [ 48.808644] ? do_raw_spin_unlock+0x9e/0x2e0 [ 48.813039] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 48.817610] ? kasan_check_write+0x14/0x20 [ 48.821828] ? do_raw_spin_lock+0xc1/0x200 [ 48.826051] ? trace_hardirqs_off+0xd/0x10 [ 48.830274] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 48.835368] block_ioctl+0xee/0x130 [ 48.838983] ? blkdev_fallocate+0x400/0x400 [ 48.843293] do_vfs_ioctl+0x1cf/0x16a0 [ 48.847164] ? rcu_pm_notify+0xc0/0xc0 [ 48.851044] ? ioctl_preallocate+0x2e0/0x2e0 [ 48.855440] ? fget_raw+0x20/0x20 [ 48.858874] ? putname+0xf2/0x130 [ 48.862309] ? rcu_read_lock_sched_held+0x108/0x120 [ 48.867310] ? kmem_cache_free+0x25c/0x2d0 [ 48.871533] ? putname+0xf7/0x130 [ 48.874982] ? security_file_ioctl+0x94/0xc0 [ 48.879377] ksys_ioctl+0xa9/0xd0 [ 48.882821] __x64_sys_ioctl+0x73/0xb0 [ 48.886693] do_syscall_64+0x1b1/0x800 [ 48.890566] ? syscall_return_slowpath+0x5c0/0x5c0 [ 48.895488] ? syscall_return_slowpath+0x30f/0x5c0 [ 48.900412] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 48.905767] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 48.910601] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.915774] RIP: 0033:0x441147 [ 48.918950] RSP: 002b:00007ffc662c71c8 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 48.926648] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441147 [ 48.933903] RDX: 0000000000000009 RSI: 0000000000004c00 RDI: 000000000000000a [ 48.941156] RBP: 00007ffc662c71e0 R08: 0000000000000000 R09: 000000000000000a [ 48.948411] R10: 0000000000000075 R11: 0000000000000213 R12: 000000000000000a [ 48.955664] R13: 0000000000000009 R14: 0030656c69662f2e R15: 0000000000000000 [ 48.962947] CPU: 1 PID: 4538 Comm: syz-executor023 Not tainted 4.17.0-rc5+ #54 [ 48.966193] FAT-fs (loop3): bogus number of reserved sectors [ 48.970321] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.970326] Call Trace: [ 48.970345] dump_stack+0x1b9/0x294 [ 48.970360] ? dump_stack_print_info.cold.2+0x52/0x52 [ 48.976172] FAT-fs (loop3): Can't find a valid FAT filesystem [ 48.985506] ? perf_trace_run_bpf_submit+0x23f/0x370 [ 48.985534] should_fail.cold.4+0xa/0x1a [ 48.989483] FAULT_INJECTION: forcing a failure. [ 48.989483] name failslab, interval 1, probability 0, space 0, times 0 [ 48.991728] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 48.991742] ? memset+0x31/0x40 [ 48.991759] ? graph_lock+0x170/0x170 [ 49.035207] ? print_usage_bug+0xc0/0xc0 [ 49.039263] ? find_held_lock+0x36/0x1c0 [ 49.043313] ? __lock_is_held+0xb5/0x140 [ 49.047379] ? check_same_owner+0x320/0x320 [ 49.051689] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 49.056694] ? rcu_note_context_switch+0x710/0x710 [ 49.061621] __should_failslab+0x124/0x180 [ 49.065851] should_failslab+0x9/0x14 [ 49.069638] kmem_cache_alloc_trace+0x2cb/0x780 [ 49.074291] ? init_wait_entry+0x1b0/0x1b0 [ 49.078520] ? loop_get_status64+0x140/0x140 [ 49.082918] __kthread_create_on_node+0x127/0x4c0 [ 49.087752] ? kthread_flush_work_fn+0x20/0x20 [ 49.092345] ? __raw_spin_lock_init+0x1c/0x100 [ 49.096923] ? __lockdep_init_map+0x105/0x590 [ 49.101408] ? loop_get_status64+0x140/0x140 [ 49.105805] kthread_create_on_node+0xa8/0xd0 [ 49.110286] ? __kthread_create_on_node+0x4c0/0x4c0 [ 49.115295] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 49.120478] lo_ioctl+0x1287/0x2130 [ 49.124102] ? lo_rw_aio_complete+0x430/0x430 [ 49.128584] blkdev_ioctl+0x9b6/0x2020 [ 49.132457] ? __save_stack_trace+0x7e/0xd0 [ 49.136783] ? blkpg_ioctl+0xc40/0xc40 [ 49.140666] ? save_stack+0xa9/0xd0 [ 49.144279] ? save_stack+0x43/0xd0 [ 49.147890] ? __kasan_slab_free+0x11a/0x170 [ 49.152282] ? kasan_slab_free+0xe/0x10 [ 49.156242] ? kmem_cache_free+0x86/0x2d0 [ 49.160373] ? putname+0xf2/0x130 [ 49.163809] ? do_sys_open+0x554/0x740 [ 49.167678] ? __x64_sys_open+0x7e/0xc0 [ 49.171638] ? do_syscall_64+0x1b1/0x800 [ 49.175682] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 49.181032] ? kasan_check_read+0x11/0x20 [ 49.185163] ? do_raw_spin_unlock+0x9e/0x2e0 [ 49.189555] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 49.194126] ? kasan_check_write+0x14/0x20 [ 49.198346] ? do_raw_spin_lock+0xc1/0x200 [ 49.202576] ? trace_hardirqs_off+0xd/0x10 [ 49.206796] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 49.211890] block_ioctl+0xee/0x130 [ 49.215503] ? blkdev_fallocate+0x400/0x400 [ 49.219811] do_vfs_ioctl+0x1cf/0x16a0 [ 49.223685] ? rcu_pm_notify+0xc0/0xc0 [ 49.227561] ? ioctl_preallocate+0x2e0/0x2e0 [ 49.231956] ? fget_raw+0x20/0x20 [ 49.235390] ? putname+0xf2/0x130 [ 49.238828] ? rcu_read_lock_sched_held+0x108/0x120 [ 49.243828] ? kmem_cache_free+0x25c/0x2d0 [ 49.248050] ? putname+0xf7/0x130 [ 49.251503] ? security_file_ioctl+0x94/0xc0 [ 49.255902] ksys_ioctl+0xa9/0xd0 [ 49.259355] __x64_sys_ioctl+0x73/0xb0 [ 49.263229] do_syscall_64+0x1b1/0x800 [ 49.267102] ? syscall_return_slowpath+0x5c0/0x5c0 [ 49.272021] ? syscall_return_slowpath+0x30f/0x5c0 [ 49.276949] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 49.282305] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 49.287139] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 49.292312] RIP: 0033:0x441147 [ 49.295483] RSP: 002b:00007ffc662c71c8 EFLAGS: 00000217 ORIG_RAX: 0000000000000010 [ 49.303179] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441147 [ 49.310434] RDX: 0000000000000007 RSI: 0000000000004c00 RDI: 0000000000000008 [ 49.317686] RBP: 00007ffc662c71e0 R08: 0000000000000000 R09: 000000000000000a [ 49.325029] R10: 0000000000000075 R11: 0000000000000217 R12: 0000000000000008 [ 49.332286] R13: 0000000000000007 R14: 0030656c69662f2e R15: 0000000000000000 [ 49.339566] CPU: 0 PID: 4537 Comm: syz-executor023 Not tainted 4.17.0-rc5+ #54 [ 49.346933] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.356274] Call Trace: [ 49.357156] FAULT_INJECTION: forcing a failure. [ 49.357156] name failslab, interval 1, probability 0, space 0, times 0 [ 49.358851] dump_stack+0x1b9/0x294 [ 49.358867] ? dump_stack_print_info.cold.2+0x52/0x52 [ 49.358890] should_fail.cold.4+0xa/0x1a [ 49.382889] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 49.387990] ? graph_lock+0x170/0x170 [ 49.391783] ? find_held_lock+0x36/0x1c0 [ 49.395834] ? __lock_is_held+0xb5/0x140 [ 49.399897] ? check_same_owner+0x320/0x320 [ 49.404204] ? kasan_check_write+0x14/0x20 [ 49.408463] ? __mutex_unlock_slowpath+0x180/0x8a0 [ 49.413608] ? rcu_note_context_switch+0x710/0x710 [ 49.418559] __should_failslab+0x124/0x180 [ 49.422992] should_failslab+0x9/0x14 [ 49.426817] kmem_cache_alloc+0x2af/0x760 [ 49.430988] ? __mutex_unlock_slowpath+0x180/0x8a0 [ 49.435937] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 49.440964] __kernfs_new_node+0xe7/0x580 [ 49.445121] ? kernfs_dop_revalidate+0x3c0/0x3c0 [ 49.449882] ? mutex_unlock+0xd/0x10 [ 49.453604] ? kernfs_activate+0x20e/0x2a0 [ 49.457849] ? kernfs_walk_and_get_ns+0x320/0x320 [ 49.462697] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 49.468236] ? kernfs_link_sibling+0x1d2/0x3b0 [ 49.472833] kernfs_new_node+0x80/0xf0 [ 49.476728] __kernfs_create_file+0x4d/0x330 [ 49.481158] sysfs_add_file_mode_ns+0x21a/0x560 [ 49.485842] internal_create_group+0x282/0x970 [ 49.490446] sysfs_create_group+0x1f/0x30 [ 49.494599] lo_ioctl+0x1771/0x2130 [ 49.498243] ? lo_rw_aio_complete+0x430/0x430 [ 49.502745] blkdev_ioctl+0x9b6/0x2020 [ 49.506642] ? blkpg_ioctl+0xc40/0xc40 [ 49.510550] ? __schedule+0x809/0x1e30 [ 49.514452] ? __sched_text_start+0x8/0x8 [ 49.518611] ? kasan_check_read+0x11/0x20 [ 49.522761] ? do_raw_spin_unlock+0x9e/0x2e0 [ 49.527177] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 49.531766] ? kasan_check_write+0x14/0x20 [ 49.536008] ? retint_kernel+0x10/0x10 [ 49.539905] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 49.544930] block_ioctl+0xee/0x130 [ 49.548563] ? blkdev_fallocate+0x400/0x400 [ 49.552892] do_vfs_ioctl+0x1cf/0x16a0 [ 49.556793] ? ioctl_preallocate+0x2e0/0x2e0 [ 49.561205] ? fget_raw+0x20/0x20 [ 49.564655] ? putname+0xf2/0x130 [ 49.568110] ? rcu_read_lock_sched_held+0x108/0x120 [ 49.573127] ? kmem_cache_free+0x25c/0x2d0 [ 49.577377] ? exit_to_usermode_loop+0x87/0x310 [ 49.582061] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.587600] ? security_file_ioctl+0x94/0xc0 [ 49.592018] ksys_ioctl+0xa9/0xd0 [ 49.595486] __x64_sys_ioctl+0x73/0xb0 [ 49.599379] do_syscall_64+0x1b1/0x800 [ 49.603273] ? syscall_return_slowpath+0x5c0/0x5c0 [ 49.608207] ? syscall_return_slowpath+0x30f/0x5c0 [ 49.613148] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 49.618522] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 49.623390] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 49.628579] RIP: 0033:0x441147 [ 49.631766] RSP: 002b:00007ffc662c71c8 EFLAGS: 00000217 ORIG_RAX: 0000000000000010 [ 49.639483] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441147 [ 49.646751] RDX: 0000000000000007 RSI: 0000000000004c00 RDI: 0000000000000008 [ 49.654018] RBP: 00007ffc662c71e0 R08: 0000000000000000 R09: 000000000000000a [ 49.661288] R10: 0000000000000075 R11: 0000000000000217 R12: 0000000000000008 [ 49.668555] R13: 0000000000000007 R14: 0030656c69662f2e R15: 0000000000000000 [ 49.675858] CPU: 1 PID: 4540 Comm: syz-executor023 Not tainted 4.17.0-rc5+ #54 [ 49.681067] FAULT_INJECTION: forcing a failure. [ 49.681067] name failslab, interval 1, probability 0, space 0, times 0 [ 49.683227] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.683235] Call Trace: [ 49.683259] dump_stack+0x1b9/0x294 [ 49.683284] ? dump_stack_print_info.cold.2+0x52/0x52 [ 49.715186] should_fail.cold.4+0xa/0x1a [ 49.719259] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 49.724382] ? graph_lock+0x170/0x170 [ 49.728200] ? find_held_lock+0x36/0x1c0 [ 49.732275] ? __lock_is_held+0xb5/0x140 [ 49.736364] ? check_same_owner+0x320/0x320 [ 49.740694] ? kasan_check_write+0x14/0x20 [ 49.744933] ? __mutex_unlock_slowpath+0x180/0x8a0 [ 49.749867] ? rcu_note_context_switch+0x710/0x710 [ 49.754807] __should_failslab+0x124/0x180 [ 49.759052] should_failslab+0x9/0x14 [ 49.762858] kmem_cache_alloc+0x2af/0x760 [ 49.767007] ? __mutex_unlock_slowpath+0x180/0x8a0 [ 49.771953] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 49.776974] __kernfs_new_node+0xe7/0x580 [ 49.781130] ? kernfs_dop_revalidate+0x3c0/0x3c0 [ 49.785893] ? mutex_unlock+0xd/0x10 [ 49.789608] ? kernfs_activate+0x20e/0x2a0 [ 49.793848] ? kernfs_walk_and_get_ns+0x320/0x320 [ 49.798695] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 49.804234] ? kernfs_link_sibling+0x1d2/0x3b0 [ 49.808830] kernfs_new_node+0x80/0xf0 [ 49.812726] __kernfs_create_file+0x4d/0x330 [ 49.817148] sysfs_add_file_mode_ns+0x21a/0x560 [ 49.821831] internal_create_group+0x282/0x970 [ 49.826435] sysfs_create_group+0x1f/0x30 [ 49.830589] lo_ioctl+0x1771/0x2130 [ 49.834233] ? lo_rw_aio_complete+0x430/0x430 [ 49.838738] blkdev_ioctl+0x9b6/0x2020 [ 49.842625] ? __save_stack_trace+0x7e/0xd0 [ 49.846951] ? blkpg_ioctl+0xc40/0xc40 [ 49.850856] ? save_stack+0xa9/0xd0 [ 49.854501] ? save_stack+0x43/0xd0 [ 49.858132] ? __kasan_slab_free+0x11a/0x170 [ 49.862543] ? kasan_slab_free+0xe/0x10 [ 49.866516] ? kmem_cache_free+0x86/0x2d0 [ 49.870663] ? putname+0xf2/0x130 [ 49.874118] ? do_sys_open+0x554/0x740 [ 49.878005] ? __x64_sys_open+0x7e/0xc0 [ 49.881980] ? do_syscall_64+0x1b1/0x800 [ 49.886041] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 49.891413] ? kasan_check_read+0x11/0x20 [ 49.895565] ? do_raw_spin_unlock+0x9e/0x2e0 [ 49.899976] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 49.904566] ? kasan_check_write+0x14/0x20 [ 49.908801] ? do_raw_spin_lock+0xc1/0x200 [ 49.913043] ? trace_hardirqs_off+0xd/0x10 [ 49.917278] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 49.922401] block_ioctl+0xee/0x130 [ 49.926034] ? blkdev_fallocate+0x400/0x400 [ 49.930366] do_vfs_ioctl+0x1cf/0x16a0 [ 49.934255] ? rcu_pm_notify+0xc0/0xc0 [ 49.938154] ? ioctl_preallocate+0x2e0/0x2e0 [ 49.942568] ? fget_raw+0x20/0x20 [ 49.946022] ? putname+0xf2/0x130 [ 49.949479] ? rcu_read_lock_sched_held+0x108/0x120 [ 49.954499] ? kmem_cache_free+0x25c/0x2d0 [ 49.958742] ? putname+0xf7/0x130 [ 49.962217] ? security_file_ioctl+0x94/0xc0 [ 49.966635] ksys_ioctl+0xa9/0xd0 [ 49.970097] __x64_sys_ioctl+0x73/0xb0 [ 49.973992] do_syscall_64+0x1b1/0x800 [ 49.977879] ? syscall_slow_exit_work+0x4f0/0x4f0 [ 49.982725] ? syscall_return_slowpath+0x5c0/0x5c0 [ 49.987659] ? syscall_return_slowpath+0x30f/0x5c0 [ 49.992599] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 49.997975] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 50.002832] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.008024] RIP: 0033:0x441147 [ 50.011213] RSP: 002b:00007ffc662c71c8 EFLAGS: 00000217 ORIG_RAX: 0000000000000010 [ 50.018927] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441147 [ 50.026195] RDX: 0000000000000007 RSI: 0000000000004c00 RDI: 0000000000000008 [ 50.033462] RBP: 00007ffc662c71e0 R08: 0000000000000000 R09: 000000000000000a [ 50.040730] R10: 0000000000000075 R11: 0000000000000217 R12: 0000000000000008 executing program [ 50.047996] R13: 0000000000000007 R14: 0030656c69662f2e R15: 0000000000000000 [ 50.055301] CPU: 0 PID: 4534 Comm: syz-executor023 Not tainted 4.17.0-rc5+ #54 [ 50.062672] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.062904] FAULT_INJECTION: forcing a failure. [ 50.062904] name failslab, interval 1, probability 0, space 0, times 0 [ 50.072019] Call Trace: [ 50.072045] dump_stack+0x1b9/0x294 [ 50.072069] ? dump_stack_print_info.cold.2+0x52/0x52 [ 50.072105] should_fail.cold.4+0xa/0x1a [ 50.072128] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 50.103774] ? perf_trace_run_bpf_submit+0x23f/0x370 [ 50.108880] ? perf_trace_run_bpf_submit+0x246/0x370 [ 50.113987] ? graph_lock+0x170/0x170 [ 50.117793] ? perf_tp_event+0xc30/0xc30 [ 50.121868] ? find_held_lock+0x36/0x1c0 [ 50.125943] ? __lock_is_held+0xb5/0x140 [ 50.130034] ? check_same_owner+0x320/0x320 [ 50.134360] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 50.138947] ? rcu_note_context_switch+0x710/0x710 [ 50.143887] __should_failslab+0x124/0x180 [ 50.148127] should_failslab+0x9/0x14 [ 50.151928] kmem_cache_alloc+0x2af/0x760 [ 50.156092] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 50.161117] __kernfs_new_node+0xe7/0x580 [ 50.165274] ? kernfs_dop_revalidate+0x3c0/0x3c0 [ 50.170040] ? lock_downgrade+0x8e0/0x8e0 [ 50.174196] ? lock_release+0xa10/0xa10 [ 50.178178] ? lock_downgrade+0x8e0/0x8e0 [ 50.182339] kernfs_new_node+0x80/0xf0 [ 50.186235] kernfs_create_dir_ns+0x3d/0x140 [ 50.190653] internal_create_group+0x110/0x970 [ 50.195238] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 50.200270] sysfs_create_group+0x1f/0x30 [ 50.204423] lo_ioctl+0x1771/0x2130 [ 50.208068] ? lo_rw_aio_complete+0x430/0x430 [ 50.212571] blkdev_ioctl+0x9b6/0x2020 [ 50.216460] ? __save_stack_trace+0x7e/0xd0 [ 50.220788] ? blkpg_ioctl+0xc40/0xc40 [ 50.224692] ? save_stack+0xa9/0xd0 [ 50.228322] ? save_stack+0x43/0xd0 [ 50.231947] ? __kasan_slab_free+0x11a/0x170 [ 50.236355] ? kasan_slab_free+0xe/0x10 [ 50.240330] ? kmem_cache_free+0x86/0x2d0 [ 50.244480] ? putname+0xf2/0x130 [ 50.247936] ? do_sys_open+0x554/0x740 [ 50.251837] ? __x64_sys_open+0x7e/0xc0 [ 50.255814] ? do_syscall_64+0x1b1/0x800 [ 50.259881] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.265257] ? kasan_check_read+0x11/0x20 [ 50.269412] ? do_raw_spin_unlock+0x9e/0x2e0 [ 50.273828] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 50.278416] ? kasan_check_write+0x14/0x20 [ 50.282654] ? do_raw_spin_lock+0xc1/0x200 [ 50.286897] ? trace_hardirqs_off+0xd/0x10 [ 50.291134] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 50.296246] block_ioctl+0xee/0x130 [ 50.299877] ? blkdev_fallocate+0x400/0x400 [ 50.304205] do_vfs_ioctl+0x1cf/0x16a0 [ 50.308096] ? rcu_pm_notify+0xc0/0xc0 [ 50.311995] ? ioctl_preallocate+0x2e0/0x2e0 [ 50.316410] ? fget_raw+0x20/0x20 [ 50.319860] ? putname+0xf2/0x130 [ 50.323313] ? rcu_read_lock_sched_held+0x108/0x120 [ 50.328333] ? kmem_cache_free+0x25c/0x2d0 [ 50.332572] ? putname+0xf7/0x130 [ 50.336051] ? security_file_ioctl+0x94/0xc0 [ 50.340468] ksys_ioctl+0xa9/0xd0 [ 50.343932] __x64_sys_ioctl+0x73/0xb0 [ 50.347833] do_syscall_64+0x1b1/0x800 [ 50.351727] ? syscall_return_slowpath+0x5c0/0x5c0 [ 50.356663] ? syscall_return_slowpath+0x30f/0x5c0 [ 50.361602] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 50.366979] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 50.371844] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.377037] RIP: 0033:0x441147 [ 50.380226] RSP: 002b:00007ffc662c71c8 EFLAGS: 00000217 ORIG_RAX: 0000000000000010 [ 50.387939] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441147 [ 50.395206] RDX: 0000000000000007 RSI: 0000000000004c00 RDI: 0000000000000008 [ 50.402476] RBP: 00007ffc662c71e0 R08: 0000000000000000 R09: 000000000000000a [ 50.409852] R10: 0000000000000075 R11: 0000000000000217 R12: 0000000000000008 [ 50.417120] R13: 0000000000000007 R14: 0030656c69662f2e R15: 0000000000000000 [ 50.424424] CPU: 1 PID: 4541 Comm: syz-executor023 Not tainted 4.17.0-rc5+ #54 [ 50.431798] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.441162] Call Trace: [ 50.443770] dump_stack+0x1b9/0x294 [ 50.443918] FAT-fs (loop6): bogus number of reserved sectors [ 50.447408] ? dump_stack_print_info.cold.2+0x52/0x52 [ 50.447445] should_fail.cold.4+0xa/0x1a [ 50.453245] FAT-fs (loop6): Can't find a valid FAT filesystem [ 50.458406] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 50.458438] ? graph_lock+0x170/0x170 [ 50.469420] FAT-fs (loop0): bogus number of reserved sectors [ 50.473450] ? find_held_lock+0x36/0x1c0 [ 50.473476] ? __lock_is_held+0xb5/0x140 [ 50.477275] FAT-fs (loop0): Can't find a valid FAT filesystem [ 50.483061] ? check_same_owner+0x320/0x320 [ 50.483081] ? kasan_check_write+0x14/0x20 [ 50.505543] ? __mutex_unlock_slowpath+0x180/0x8a0 [ 50.510467] ? rcu_note_context_switch+0x710/0x710 [ 50.515397] __should_failslab+0x124/0x180 [ 50.519624] should_failslab+0x9/0x14 [ 50.523417] kmem_cache_alloc+0x2af/0x760 [ 50.527556] ? __mutex_unlock_slowpath+0x180/0x8a0 [ 50.532480] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 50.537492] __kernfs_new_node+0xe7/0x580 [ 50.541633] ? kernfs_dop_revalidate+0x3c0/0x3c0 [ 50.546381] ? mutex_unlock+0xd/0x10 [ 50.550084] ? kernfs_activate+0x20e/0x2a0 [ 50.554316] ? kernfs_walk_and_get_ns+0x320/0x320 [ 50.559150] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 50.564679] ? kernfs_link_sibling+0x1d2/0x3b0 [ 50.569261] kernfs_new_node+0x80/0xf0 [ 50.573143] __kernfs_create_file+0x4d/0x330 [ 50.577549] sysfs_add_file_mode_ns+0x21a/0x560 [ 50.582216] internal_create_group+0x282/0x970 [ 50.586801] sysfs_create_group+0x1f/0x30 [ 50.590938] lo_ioctl+0x1771/0x2130 [ 50.594567] ? lo_rw_aio_complete+0x430/0x430 [ 50.599056] blkdev_ioctl+0x9b6/0x2020 [ 50.602936] ? __save_stack_trace+0x7e/0xd0 [ 50.607252] ? blkpg_ioctl+0xc40/0xc40 [ 50.611142] ? save_stack+0xa9/0xd0 [ 50.614760] ? save_stack+0x43/0xd0 [ 50.618376] ? __kasan_slab_free+0x11a/0x170 [ 50.622773] ? kasan_slab_free+0xe/0x10 [ 50.626738] ? kmem_cache_free+0x86/0x2d0 [ 50.630874] ? putname+0xf2/0x130 [ 50.634322] ? do_sys_open+0x554/0x740 [ 50.638199] ? __x64_sys_open+0x7e/0xc0 [ 50.642162] ? do_syscall_64+0x1b1/0x800 [ 50.646211] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.651578] ? kasan_check_read+0x11/0x20 [ 50.655716] ? do_raw_spin_unlock+0x9e/0x2e0 [ 50.660118] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 50.664692] ? kasan_check_write+0x14/0x20 [ 50.668915] ? do_raw_spin_lock+0xc1/0x200 [ 50.673141] ? trace_hardirqs_off+0xd/0x10 [ 50.677364] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 50.682467] block_ioctl+0xee/0x130 [ 50.686085] ? blkdev_fallocate+0x400/0x400 [ 50.690407] do_vfs_ioctl+0x1cf/0x16a0 [ 50.694284] ? rcu_pm_notify+0xc0/0xc0 [ 50.698172] ? ioctl_preallocate+0x2e0/0x2e0 [ 50.702575] ? fget_raw+0x20/0x20 [ 50.706020] ? putname+0xf2/0x130 [ 50.709470] ? rcu_read_lock_sched_held+0x108/0x120 [ 50.714478] ? kmem_cache_free+0x25c/0x2d0 [ 50.718704] ? putname+0xf7/0x130 [ 50.722165] ? security_file_ioctl+0x94/0xc0 [ 50.726569] ksys_ioctl+0xa9/0xd0 [ 50.730030] __x64_sys_ioctl+0x73/0xb0 [ 50.733913] do_syscall_64+0x1b1/0x800 [ 50.737796] ? syscall_return_slowpath+0x5c0/0x5c0 [ 50.742720] ? syscall_return_slowpath+0x30f/0x5c0 [ 50.747646] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 50.753019] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 50.757863] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.763046] RIP: 0033:0x441147 [ 50.766226] RSP: 002b:00007ffc662c71c8 EFLAGS: 00000217 ORIG_RAX: 0000000000000010 [ 50.773926] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441147 [ 50.781185] RDX: 0000000000000007 RSI: 0000000000004c00 RDI: 0000000000000008 [ 50.788444] RBP: 00007ffc662c71e0 R08: 0000000000000000 R09: 000000000000000a executing program [ 50.795703] R10: 0000000000000075 R11: 0000000000000217 R12: 0000000000000008 [ 50.802958] R13: 0000000000000007 R14: 0030656c69662f2e R15: 0000000000000000 [ 50.813423] ------------[ cut here ]------------ [ 50.814341] FAT-fs (loop7): bogus number of reserved sectors [ 50.818275] sysfs group 'loop' not found for kobject 'loop6' [ 50.824088] FAT-fs (loop7): Can't find a valid FAT filesystem [ 50.830018] WARNING: CPU: 0 PID: 4537 at fs/sysfs/group.c:235 sysfs_remove_group+0x15b/0x1b0 [ 50.837490] ------------[ cut here ]------------ [ 50.844333] Kernel panic - not syncing: panic_on_warn set ... [ 50.844333] [ 50.844352] CPU: 0 PID: 4537 Comm: syz-executor023 Not tainted 4.17.0-rc5+ #54 [ 50.844362] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.844370] Call Trace: [ 50.844393] dump_stack+0x1b9/0x294 [ 50.844423] ? dump_stack_print_info.cold.2+0x52/0x52 [ 50.849194] sysfs group 'loop' not found for kobject 'loop0' [ 50.856525] ? sysfs_remove_group+0xf0/0x1b0 [ 50.856542] panic+0x22f/0x4de [ 50.856560] ? add_taint.cold.5+0x16/0x16 [ 50.864051] WARNING: CPU: 1 PID: 4534 at fs/sysfs/group.c:235 sysfs_remove_group+0x15b/0x1b0 [ 50.873332] ? __warn.cold.8+0x148/0x1b3 [ 50.875879] Modules linked in: [ 50.879494] ? __warn.cold.8+0x117/0x1b3 [ 50.890440] ? sysfs_remove_group+0x15b/0x1b0 [ 50.894829] CPU: 1 PID: 4534 Comm: syz-executor023 Not tainted 4.17.0-rc5+ #54 [ 50.897998] __warn.cold.8+0x163/0x1b3 [ 50.902121] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.910680] ? sysfs_remove_group+0x15b/0x1b0 [ 50.914722] RIP: 0010:sysfs_remove_group+0x15b/0x1b0 [ 50.917894] report_bug+0x252/0x2d0 [ 50.921927] RSP: 0018:ffff8801cf277848 EFLAGS: 00010286 [ 50.926416] do_error_trap+0x1de/0x490 [ 50.937615] ? math_error+0x420/0x420 [ 50.946943] RAX: 0000000000000030 RBX: ffffffff892dc900 RCX: ffffffff8160aa5d [ 50.951423] ? vprintk_default+0x28/0x30 [ 50.956499] RDX: 0000000000000000 RSI: ffffffff8160f711 RDI: ffff8801cf2773a8 [ 50.960115] ? printk+0x9e/0xba [ 50.965448] RBP: ffff8801cf277870 R08: ffff8801d0200100 R09: 0000000000000006 [ 50.969329] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 50.973093] R10: ffff8801d0200100 R11: 0000000000000000 R12: 0000000000000000 [ 50.980360] do_invalid_op+0x1b/0x20 [ 50.984392] R13: ffff8801d2818b20 R14: ffffffff88279e00 R15: ffff8801d2807e68 [ 50.991647] invalid_op+0x14/0x20 [ 50.994906] FS: 0000000001dd6880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 51.002160] RIP: 0010:sysfs_remove_group+0x15b/0x1b0 [ 51.006977] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.014233] RSP: 0018:ffff8801c6b47848 EFLAGS: 00010286 [ 51.017925] CR2: 00007f6d2d0c5af0 CR3: 00000001d9b78000 CR4: 00000000001406e0 [ 51.025179] RAX: 0000000000000030 RBX: ffffffff892dc900 RCX: ffffffff8160aa5d [ 51.028608] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.036815] RDX: 0000000000000000 RSI: ffffffff8160f711 RDI: ffff8801c6b473a8 [ 51.041894] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.047762] RBP: ffff8801c6b47870 R08: ffff8801ad20e1c0 R09: 0000000000000006 [ 51.053095] Call Trace: [ 51.060351] R10: ffff8801ad20e1c0 R11: 0000000000000000 R12: 0000000000000000 [ 51.067614] loop_clr_fd+0x51e/0xb80 [ 51.074855] R13: ffff8801d2a50e20 R14: ffffffff88279e00 R15: ffff8801d2a019a8 [ 51.082116] ? loop_attr_do_show_backing_file+0x1a0/0x1a0 [ 51.089376] ? console_unlock+0x8ad/0x1100 [ 51.096631] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 51.099192] ? vprintk_func+0x81/0xe7 [ 51.106443] lo_ioctl+0x642/0x2130 [ 51.110142] ? sysfs_remove_group+0x15b/0x1b0 [ 51.117390] ? rcu_is_watching+0x85/0x140 [ 51.122903] loop_clr_fd+0x51e/0xb80 [ 51.127120] ? lo_rw_aio_complete+0x430/0x430 [ 51.132291] ? loop_attr_do_show_backing_file+0x1a0/0x1a0 [ 51.136065] blkdev_ioctl+0x9b6/0x2020 [ 51.139592] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 51.144069] ? blkpg_ioctl+0xc40/0xc40 [ 51.148196] lo_ioctl+0x642/0x2130 [ 51.151888] ? is_bpf_text_address+0xd7/0x170 [ 51.156363] ? rcu_is_watching+0x85/0x140 [ 51.161877] ? kernel_text_address+0x79/0xf0 [ 51.165751] ? lo_rw_aio_complete+0x430/0x430 [ 51.170913] ? __unwind_start+0x166/0x330 [ 51.174782] blkdev_ioctl+0x9b6/0x2020 [ 51.178298] ? __kernel_text_address+0xd/0x40 [ 51.182780] ? blkpg_ioctl+0xc40/0xc40 [ 51.186904] ? unwind_get_return_address+0x61/0xa0 [ 51.191286] ? is_bpf_text_address+0xd7/0x170 [ 51.195770] ? __save_stack_trace+0x7e/0xd0 [ 51.199897] ? kernel_text_address+0x79/0xf0 [ 51.203784] ? save_stack+0xa9/0xd0 [ 51.208239] ? __unwind_start+0x166/0x330 [ 51.212106] ? save_stack+0x43/0xd0 [ 51.217015] ? __kernel_text_address+0xd/0x40 [ 51.221489] ? __kasan_slab_free+0x11a/0x170 [ 51.225789] ? unwind_get_return_address+0x61/0xa0 [ 51.230174] ? kasan_slab_free+0xe/0x10 [ 51.233779] ? __save_stack_trace+0x7e/0xd0 [ 51.237904] ? kfree+0xd9/0x260 [ 51.241531] ? save_stack+0xa9/0xd0 [ 51.245986] ? ksys_mount+0xa3/0x140 [ 51.250382] ? save_stack+0x43/0xd0 [ 51.255291] ? __x64_sys_mount+0xbe/0x150 [ 51.259242] ? __kasan_slab_free+0x11a/0x170 [ 51.263543] ? do_syscall_64+0x1b1/0x800 [ 51.266800] ? kasan_slab_free+0xe/0x10 [ 51.270405] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 51.274094] ? kfree+0xd9/0x260 [ 51.277711] ? kasan_check_read+0x11/0x20 [ 51.281830] ? ksys_mount+0xa3/0x140 [ 51.286224] block_ioctl+0xee/0x130 [ 51.290256] ? __x64_sys_mount+0xbe/0x150 [ 51.294211] ? blkdev_fallocate+0x400/0x400 [ 51.299551] ? do_syscall_64+0x1b1/0x800 [ 51.302813] do_vfs_ioctl+0x1cf/0x16a0 [ 51.306935] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 51.310636] ? ioctl_preallocate+0x2e0/0x2e0 [ 51.314243] ? kasan_check_read+0x11/0x20 [ 51.318370] ? fget_raw+0x20/0x20 [ 51.322673] block_ioctl+0xee/0x130 [ 51.326716] ? quarantine_put+0xeb/0x190 [ 51.330574] ? blkdev_fallocate+0x400/0x400 [ 51.335915] ? kfree+0x111/0x260 [ 51.340305] do_vfs_ioctl+0x1cf/0x16a0 [ 51.344432] ? ksys_mount+0xa3/0x140 [ 51.347875] ? ioctl_preallocate+0x2e0/0x2e0 [ 51.351474] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 51.355513] ? fget_raw+0x20/0x20 [ 51.359821] ? security_file_ioctl+0x94/0xc0 [ 51.363172] ? quarantine_put+0xeb/0x190 [ 51.367035] ksys_ioctl+0xa9/0xd0 [ 51.370723] ? kfree+0x111/0x260 [ 51.375115] __x64_sys_ioctl+0x73/0xb0 [ 51.380104] ? ksys_mount+0xa3/0x140 [ 51.383539] do_syscall_64+0x1b1/0x800 [ 51.387927] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 51.391973] ? syscall_return_slowpath+0x5c0/0x5c0 [ 51.395403] ? security_file_ioctl+0x94/0xc0 [ 51.398748] ? syscall_return_slowpath+0x30f/0x5c0 [ 51.402618] ksys_ioctl+0xa9/0xd0 [ 51.406309] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 51.410179] __x64_sys_ioctl+0x73/0xb0 [ 51.415177] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 51.420092] do_syscall_64+0x1b1/0x800 [ 51.424489] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 51.429394] ? syscall_return_slowpath+0x5c0/0x5c0 [ 51.432820] RIP: 0033:0x441147 [ 51.438166] ? syscall_return_slowpath+0x30f/0x5c0 [ 51.442027] RSP: 002b:00007ffc662c71c8 EFLAGS: 00000207 [ 51.446855] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 51.450710] ORIG_RAX: 0000000000000010 [ 51.455893] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 51.460791] RAX: ffffffffffffffda RBX: 0000000000000016 RCX: 0000000000441147 [ 51.463980] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 51.469312] RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000008 [ 51.474655] RIP: 0033:0x441147 [ 51.480000] RBP: 00007ffc662c71e0 R08: 0000000020000240 R09: 000000000000000a [ 51.483949] RSP: 002b:00007ffc662c71c8 EFLAGS: 00000207 [ 51.488770] R10: 0000000000000000 R11: 0000000000000207 R12: 0000000000000008 [ 51.496019] ORIG_RAX: 0000000000000010 [ 51.501195] R13: 0000000000000007 R14: 0030656c69662f2e R15: 0000000000000000 [ 51.508446] RAX: ffffffffffffffda RBX: 0000000000000016 RCX: 0000000000441147 [ 51.511636] Code: [ 51.518869] RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000008 [ 51.524213] 6e [ 51.531470] RBP: 00007ffc662c71e0 R08: 0000000020000240 R09: 000000000000000a [ 51.531483] R10: 0000000000000000 R11: 0000000000000207 R12: 0000000000000008 [ 51.535435] 48 [ 51.542686] R13: 0000000000000007 R14: 0030656c69662f2e R15: 0000000000000000 [ 51.584796] 89 d9 49 8b 55 00 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 41 48 8b 33 48 c7 c7 40 c6 d5 87 e8 d5 4a 5e ff <0f> 0b eb 92 e8 8c 7c ce ff e9 d0 fe ff ff 48 89 df e8 7f 7c ce [ 51.603230] irq event stamp: 2629706 [ 51.606938] hardirqs last enabled at (2629705): [] restore_regs_and_return_to_kernel+0x0/0x2b [ 51.617240] hardirqs last disabled at (2629706): [] error_entry+0x76/0xd0 [ 51.625720] softirqs last enabled at (2629704): [] __do_softirq+0x778/0xaf5 [ 51.634467] softirqs last disabled at (2629697): [] irq_exit+0x1d1/0x200 [ 51.642857] ---[ end trace 224ecd5ebacc3e2f ]--- [ 51.648141] Dumping ftrace buffer: [ 51.651818] (ftrace buffer empty) [ 51.655511] Kernel Offset: disabled [ 51.659132] Rebooting in 86400 seconds..