[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 30.688656] kauditd_printk_skb: 9 callbacks suppressed [ 30.688669] audit: type=1800 audit(1537922759.553:33): pid=5345 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 30.717876] audit: type=1800 audit(1537922759.553:34): pid=5345 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 35.694568] audit: type=1400 audit(1537922764.553:35): avc: denied { map } for pid=5522 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.54' (ECDSA) to the list of known hosts. executing program [ 390.347366] audit: type=1400 audit(1537923119.213:36): avc: denied { map } for pid=5536 comm="syz-executor814" path="/root/syz-executor814259453" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 538.896309] INFO: task jbd2/sda1-8:3081 blocked for more than 140 seconds. [ 538.903659] Not tainted 4.19.0-rc5+ #33 [ 538.908992] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 538.917177] jbd2/sda1-8 D18264 3081 2 0x80000000 [ 538.922846] Call Trace: [ 538.925590] __schedule+0x86c/0x1ed0 [ 538.929529] ? __sched_text_start+0x8/0x8 [ 538.933780] ? mark_held_locks+0xc7/0x130 [ 538.938111] ? graph_lock+0x170/0x170 [ 538.941973] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 538.947300] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 538.952429] ? lockdep_hardirqs_on+0x421/0x5c0 [ 538.957207] ? trace_hardirqs_on+0xbd/0x310 [ 538.961591] ? kasan_check_read+0x11/0x20 [ 538.965786] ? prepare_to_wait+0x1b3/0x3f0 [ 538.970229] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 538.975700] ? find_held_lock+0x36/0x1c0 [ 538.979957] schedule+0xfe/0x460 [ 538.983340] ? lock_downgrade+0x900/0x900 [ 538.987630] ? __schedule+0x1ed0/0x1ed0 [ 538.991625] ? kasan_check_read+0x11/0x20 [ 538.995807] ? do_raw_spin_unlock+0xa7/0x2f0 [ 539.000417] ? do_raw_write_trylock+0x1c0/0x1c0 [ 539.005110] ? kasan_check_write+0x14/0x20 [ 539.009492] ? do_raw_spin_lock+0xc1/0x200 [ 539.013827] jbd2_journal_commit_transaction+0xd42/0x89f8 [ 539.019522] ? print_usage_bug+0xc0/0xc0 [ 539.023623] ? journal_submit_commit_record+0xb60/0xb60 [ 539.029133] ? __lock_acquire+0x7ec/0x4ec0 [ 539.033383] ? mark_held_locks+0x130/0x130 [ 539.037771] ? __update_load_avg_blocked_se+0x730/0x730 [ 539.043153] ? __update_load_avg_se+0xb90/0xb90 [ 539.047983] ? __lock_is_held+0xb5/0x140 [ 539.052124] ? update_load_avg+0x387/0x2470 [ 539.056616] ? print_usage_bug+0xc0/0xc0 [ 539.060699] ? kasan_check_write+0x14/0x20 [ 539.064969] ? native_queued_spin_lock_slowpath+0x1de/0x1120 [ 539.070949] ? __bfs+0xb0/0x7a0 [ 539.074245] ? finish_wait+0x430/0x430 [ 539.078294] ? __pv_queued_spin_lock_slowpath+0x15d0/0x15d0 [ 539.084037] ? __lock_acquire+0x7ec/0x4ec0 [ 539.088417] ? graph_lock+0x170/0x170 [ 539.092243] ? print_usage_bug+0xc0/0xc0 [ 539.096451] ? mark_held_locks+0x130/0x130 [ 539.100704] ? find_held_lock+0x36/0x1c0 [ 539.104782] ? print_usage_bug+0xc0/0xc0 [ 539.109011] ? __lock_acquire+0x7ec/0x4ec0 [ 539.113338] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 539.119303] ? kasan_check_read+0x11/0x20 [ 539.123469] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 539.128908] ? rcu_bh_qs+0xc0/0xc0 [ 539.132490] ? __lock_acquire+0x7ec/0x4ec0 [ 539.136868] ? mark_held_locks+0x130/0x130 [ 539.141121] ? update_curr+0x4ec/0xbe0 [ 539.145015] ? print_usage_bug+0xc0/0xc0 [ 539.149254] ? graph_lock+0x170/0x170 [ 539.153068] ? __account_cfs_rq_runtime+0x790/0x790 [ 539.158265] ? mark_held_locks+0x130/0x130 [ 539.162525] ? graph_lock+0x170/0x170 [ 539.166477] ? print_usage_bug+0xc0/0xc0 [ 539.170568] ? pick_next_task_fair+0xbad/0x17c0 [ 539.175260] ? lock_downgrade+0x900/0x900 [ 539.179589] ? graph_lock+0x170/0x170 [ 539.183416] ? print_usage_bug+0xc0/0xc0 [ 539.187629] ? lock_is_held_type+0x210/0x210 [ 539.192067] ? __lock_acquire+0x7ec/0x4ec0 [ 539.196478] ? find_held_lock+0x36/0x1c0 [ 539.200576] ? find_held_lock+0x36/0x1c0 [ 539.204674] ? __lock_acquire+0x7ec/0x4ec0 [ 539.209101] ? __lock_acquire+0x7ec/0x4ec0 [ 539.213349] ? kasan_check_read+0x11/0x20 [ 539.217703] ? finish_task_switch+0x1f5/0x900 [ 539.222239] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 539.227909] ? compat_start_thread+0x80/0x80 [ 539.232343] ? mark_held_locks+0x130/0x130 [ 539.237156] ? mark_held_locks+0x130/0x130 [ 539.241410] ? kasan_check_write+0x14/0x20 [ 539.245662] ? finish_task_switch+0x2f5/0x900 [ 539.250383] ? graph_lock+0x170/0x170 [ 539.254245] ? preempt_notifier_register+0x200/0x200 [ 539.259520] ? __switch_to_asm+0x34/0x70 [ 539.263604] ? __switch_to_asm+0x34/0x70 [ 539.267853] ? __switch_to_asm+0x34/0x70 [ 539.271927] ? __switch_to_asm+0x40/0x70 [ 539.276001] ? __switch_to_asm+0x34/0x70 [ 539.280270] ? __switch_to_asm+0x40/0x70 [ 539.284351] ? __switch_to_asm+0x34/0x70 [ 539.288583] ? __switch_to_asm+0x34/0x70 [ 539.292675] ? __switch_to_asm+0x40/0x70 [ 539.296920] ? __switch_to_asm+0x34/0x70 [ 539.301008] ? graph_lock+0x170/0x170 [ 539.304824] ? lock_acquire+0x1ed/0x520 [ 539.309077] ? lock_timer_base+0xbb/0x2b0 [ 539.313256] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 539.318539] ? find_held_lock+0x36/0x1c0 [ 539.322629] ? try_to_del_timer_sync+0xec/0x140 [ 539.327481] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 539.332605] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 539.337889] ? lockdep_hardirqs_on+0x421/0x5c0 [ 539.342497] ? trace_hardirqs_on+0xbd/0x310 [ 539.347540] ? kasan_check_read+0x11/0x20 [ 539.351730] ? try_to_del_timer_sync+0xec/0x140 [ 539.356585] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 539.362064] ? stub_timer+0x10/0x10 [ 539.365702] ? del_timer_sync+0xf8/0x270 [ 539.369940] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 539.375073] ? try_to_del_timer_sync+0xec/0x140 [ 539.379903] ? del_timer+0x150/0x150 [ 539.383718] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 539.389433] kjournald2+0x26d/0xb30 [ 539.393090] ? __bpf_trace_jbd2_end_commit+0x30/0x30 [ 539.398390] ? __kthread_parkme+0xce/0x1a0 [ 539.402648] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 539.407900] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 539.413024] ? lockdep_hardirqs_on+0x421/0x5c0 [ 539.417768] ? trace_hardirqs_on+0xbd/0x310 [ 539.422109] ? finish_wait+0x430/0x430 [ 539.426010] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 539.431642] ? kasan_check_write+0x14/0x20 [ 539.435900] ? do_raw_spin_lock+0xc1/0x200 [ 539.440350] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 539.445473] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 539.451227] ? __kthread_parkme+0xfb/0x1a0 [ 539.455484] kthread+0x35a/0x420 [ 539.458997] ? __bpf_trace_jbd2_end_commit+0x30/0x30 [ 539.464117] ? kthread_bind+0x40/0x40 [ 539.468069] ret_from_fork+0x3a/0x50 [ 539.471819] INFO: task restorecond:5463 blocked for more than 140 seconds. [ 539.478972] Not tainted 4.19.0-rc5+ #33 [ 539.483477] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 539.491604] restorecond D23512 5463 1 0x00000000 [ 539.497374] Call Trace: [ 539.499989] __schedule+0x86c/0x1ed0 [ 539.503710] ? __switch_to_asm+0x34/0x70 [ 539.507926] ? __switch_to_asm+0x40/0x70 [ 539.512005] ? __switch_to_asm+0x34/0x70 [ 539.516229] ? __sched_text_start+0x8/0x8 [ 539.520399] ? __schedule+0x874/0x1ed0 [ 539.524297] ? rwsem_spin_on_owner+0x264/0xa30 [ 539.529044] ? graph_lock+0x170/0x170 [ 539.532863] ? print_usage_bug+0xc0/0xc0 [ 539.537153] ? __sched_text_start+0x8/0x8 [ 539.541328] ? kasan_check_read+0x11/0x20 [ 539.545492] ? rcu_bh_qs+0xc0/0xc0 [ 539.549212] ? find_held_lock+0x36/0x1c0 [ 539.553299] schedule+0xfe/0x460 [ 539.556825] ? __schedule+0x1ed0/0x1ed0 [ 539.560820] ? lockdep_hardirqs_on+0x421/0x5c0 [ 539.565417] ? trace_hardirqs_on+0xbd/0x310 [ 539.569914] ? kasan_check_read+0x11/0x20 [ 539.574082] ? __rwsem_down_write_failed_common+0x8db/0x1670 [ 539.580025] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 539.585491] ? kasan_check_write+0x14/0x20 [ 539.589904] ? do_raw_spin_lock+0xc1/0x200 [ 539.594164] __rwsem_down_write_failed_common+0xbb9/0x1670 [ 539.599937] ? find_held_lock+0x36/0x1c0 [ 539.604026] ? rwsem_spin_on_owner+0xa30/0xa30 [ 539.608767] ? find_held_lock+0x36/0x1c0 [ 539.612859] ? mark_held_locks+0x130/0x130 [ 539.617265] ? rcu_bh_qs+0xc0/0xc0 [ 539.620884] ? unwind_dump+0x190/0x190 [ 539.624852] ? is_bpf_text_address+0xd3/0x170 [ 539.629528] ? kernel_text_address+0x79/0xf0 [ 539.633955] ? __kernel_text_address+0xd/0x40 [ 539.638598] ? unwind_get_return_address+0x61/0xa0 [ 539.643563] ? graph_lock+0x170/0x170 [ 539.647508] ? save_stack+0xa9/0xd0 [ 539.651157] ? graph_lock+0x170/0x170 [ 539.655035] ? kvmalloc_node+0x65/0xf0 [ 539.659123] ? graph_lock+0x170/0x170 [ 539.663012] ? do_syscall_64+0x1b9/0x820 [ 539.667240] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 539.672631] ? __lock_is_held+0xb5/0x140 [ 539.676860] ? lock_acquire+0x1ed/0x520 [ 539.680916] ? vfs_setxattr+0x96/0x100 [ 539.684831] ? lock_release+0x970/0x970 [ 539.689003] ? arch_local_save_flags+0x40/0x40 [ 539.693678] ? __might_fault+0x12b/0x1e0 [ 539.697997] rwsem_down_write_failed+0xe/0x10 [ 539.702537] ? rwsem_down_write_failed+0xe/0x10 [ 539.707431] call_rwsem_down_write_failed+0x17/0x30 [ 539.712488] down_write+0xa5/0x130 [ 539.716041] ? vfs_setxattr+0x96/0x100 [ 539.720157] ? down_read+0x1d0/0x1d0 [ 539.723902] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 539.729631] ? xattr_permission+0x261/0x310 [ 539.733985] vfs_setxattr+0x96/0x100 [ 539.737953] setxattr+0x2ea/0x450 [ 539.741429] ? vfs_setxattr+0x100/0x100 [ 539.745510] ? check_preemption_disabled+0x48/0x200 [ 539.750758] ? check_preemption_disabled+0x48/0x200 [ 539.755809] ? __lock_is_held+0xb5/0x140 [ 539.760070] ? preempt_count_add+0x7d/0x160 [ 539.764418] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 539.770267] ? __mnt_want_write+0x327/0x420 [ 539.774623] ? may_umount_tree+0x210/0x210 [ 539.779029] ? rcu_read_lock_sched_held+0x108/0x120 [ 539.784066] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 539.789827] ? __sb_start_write+0x1b2/0x370 [ 539.794179] path_setxattr+0x1e3/0x230 [ 539.798250] ? setxattr+0x450/0x450 [ 539.801895] ? trace_hardirqs_on+0xbd/0x310 [ 539.806382] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 539.811763] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 539.817398] __x64_sys_lsetxattr+0xc1/0x150 [ 539.821745] do_syscall_64+0x1b9/0x820 [ 539.825648] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 539.831260] ? syscall_return_slowpath+0x5e0/0x5e0 [ 539.836354] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 539.841224] ? trace_hardirqs_on_caller+0x310/0x310 [ 539.846420] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 539.851455] ? prepare_exit_to_usermode+0x291/0x3b0 [ 539.856640] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 539.861558] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 539.866904] RIP: 0033:0x7f90394afffa [ 539.870647] Code: Bad RIP value. [ 539.874016] RSP: 002b:00007ffea9e66758 EFLAGS: 00000202 ORIG_RAX: 00000000000000bd [ 539.881968] RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00007f90394afffa [ 539.889432] RDX: 000055665ed3faf0 RSI: 00007f9039edbf69 RDI: 000055665e9a72e0 [ 539.896887] RBP: 000055665e9a72e0 R08: 0000000000000000 R09: 73753a725f746365 [ 539.904178] R10: 0000000000000025 R11: 0000000000000202 R12: 000055665ed97700 [ 539.911703] R13: 000055665e9a83f0 R14: 00007ffea9e667a0 R15: 0000000000000000 [ 539.919178] [ 539.919178] Showing all locks held in the system: [ 539.925552] 4 locks held by kworker/u4:4/363: [ 539.930267] #0: 0000000073bdca6d ((wq_completion)"writeback"){+.+.}, at: process_one_work+0xb43/0x1b90 [ 539.940026] #1: 00000000df09446e ((work_completion)(&(&wb->dwork)->work)){+.+.}, at: process_one_work+0xb9a/0x1b90 [ 539.950849] #2: 000000004637b529 (&type->s_umount_key#45){++++}, at: trylock_super+0x22/0x110 [ 539.959846] #3: 00000000a415550e (&sbi->s_journal_flag_rwsem){.+.+}, at: do_writepages+0x9a/0x1a0 [ 539.969256] 1 lock held by khungtaskd/988: [ 539.973496] #0: 00000000ae271898 (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 [ 539.982404] 3 locks held by rs:main Q:Reg/5381: [ 539.987211] #0: 00000000efe19302 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 [ 539.995247] #1: 00000000a3ee7daf (sb_writers#4){.+.+}, at: vfs_write+0x42a/0x560 [ 540.003217] #2: 00000000305011bf (&sb->s_type->i_mutex_key#9){+.+.}, at: ext4_file_write_iter+0x2a1/0x1420 [ 540.013388] 1 lock held by rsyslogd/5383: [ 540.017669] #0: 00000000987001e3 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 [ 540.025706] 2 locks held by restorecond/5463: [ 540.030397] #0: 00000000a3ee7daf (sb_writers#4){.+.+}, at: mnt_want_write+0x3f/0xc0 [ 540.038504] #1: 0000000029e06ab6 (&sb->s_type->i_mutex_key#9){+.+.}, at: vfs_setxattr+0x96/0x100 [ 540.047762] 2 locks held by getty/5505: [ 540.051745] #0: 000000007fb8c255 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 540.060214] #1: 000000006425178e (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 540.069415] 2 locks held by getty/5506: [ 540.073392] #0: 000000009b7ac44b (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 540.081851] #1: 00000000f0a64dd1 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 540.090924] 2 locks held by getty/5507: [ 540.094907] #0: 00000000c556fc2d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 540.103376] #1: 00000000e6f5453a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 540.112427] 2 locks held by getty/5508: [ 540.116544] #0: 000000001d81ca20 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 540.124839] #1: 000000000042f33f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 540.133932] 2 locks held by getty/5509: [ 540.138027] #0: 00000000393324f5 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 540.146438] #1: 0000000092cc7995 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 540.155332] 2 locks held by getty/5510: [ 540.159448] #0: 00000000630ab07f (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 540.167851] #1: 00000000064b0278 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 540.176901] 2 locks held by getty/5511: [ 540.180884] #0: 00000000a2bae924 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 540.189314] #1: 000000003594154b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 540.198349] 6 locks held by syz-executor814/5536: [ 540.203221] [ 540.204866] ============================================= [ 540.204866] [ 540.212035] NMI backtrace for cpu 0 [ 540.215675] CPU: 0 PID: 988 Comm: khungtaskd Not tainted 4.19.0-rc5+ #33 [ 540.222517] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 540.231871] Call Trace: [ 540.234605] dump_stack+0x1c4/0x2b4 [ 540.238246] ? dump_stack_print_info.cold.2+0x52/0x52 [ 540.243429] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 540.249007] nmi_cpu_backtrace.cold.3+0x63/0xa2 [ 540.253736] ? lapic_can_unplug_cpu.cold.27+0x3f/0x3f [ 540.258944] nmi_trigger_cpumask_backtrace+0x1b3/0x1ed [ 540.264233] arch_trigger_cpumask_backtrace+0x14/0x20 [ 540.269432] watchdog+0xb3e/0x1050 [ 540.273001] ? reset_hung_task_detector+0xd0/0xd0 [ 540.277863] ? __kthread_parkme+0xce/0x1a0 [ 540.282110] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 540.287224] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 540.292339] ? lockdep_hardirqs_on+0x421/0x5c0 [ 540.296934] ? trace_hardirqs_on+0xbd/0x310 [ 540.301263] ? kasan_check_read+0x11/0x20 [ 540.305420] ? __kthread_parkme+0xce/0x1a0 [ 540.309678] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 540.315138] ? kasan_check_write+0x14/0x20 [ 540.319388] ? do_raw_spin_lock+0xc1/0x200 [ 540.323639] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 540.328753] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 540.334297] ? __kthread_parkme+0xfb/0x1a0 [ 540.338546] kthread+0x35a/0x420 [ 540.341920] ? reset_hung_task_detector+0xd0/0xd0 [ 540.346772] ? kthread_bind+0x40/0x40 [ 540.350593] ret_from_fork+0x3a/0x50 [ 540.354429] Sending NMI from CPU 0 to CPUs 1: [ 540.360377] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.239 msecs [ 540.360997] NMI backtrace for cpu 1 [ 540.361005] CPU: 1 PID: 5536 Comm: syz-executor814 Not tainted 4.19.0-rc5+ #33 [ 540.361014] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 540.361020] RIP: 0010:__sanitizer_cov_trace_pc+0x4c/0x50 [ 540.361034] Code: d0 12 00 00 83 fa 02 75 20 48 8b 88 d8 12 00 00 8b 80 d4 12 00 00 48 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 5d 0f 1f 00 55 40 0f b6 d6 40 0f b6 f7 31 ff 48 89 e5 48 8b 4d 08 [ 540.361039] RSP: 0018:ffff8801d20ef148 EFLAGS: 00000293 [ 540.361050] RAX: ffff8801c4ce05c0 RBX: ffff8801ba71a600 RCX: ffffffff8211649c [ 540.361056] RDX: 0000000000000000 RSI: ffffffff821165a8 RDI: 0000000000000003 [ 540.361063] RBP: ffff8801d20ef1b0 R08: ffff8801c4ce05c0 R09: 1ffffffff12f45ed [ 540.361069] R10: ffffed003b5a4732 R11: ffff8801dad23993 R12: ffff8801b239e24c [ 540.361076] R13: ffff8801b239e258 R14: ffff8801b239e24c R15: ffff8801ba71a600 [ 540.361083] FS: 00000000024de880(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 [ 540.361089] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 540.361095] CR2: ffffffffff600400 CR3: 00000001c3204000 CR4: 00000000001406e0 [ 540.361099] Call Trace: [ 540.361104] ? ext4_find_extent+0x5f8/0x9b0 [ 540.361109] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 540.361114] mext_check_coverage.constprop.13+0x2b0/0x510 [ 540.361119] ? mext_page_mkuptodate+0x12b0/0x12b0 [ 540.361124] ext4_move_extents+0x2784/0x3c20 [ 540.361129] ? ext4_double_up_write_data_sem+0x30/0x30 [ 540.361133] ? save_stack+0xa9/0xd0 [ 540.361138] ? save_stack+0x43/0xd0 [ 540.361142] ? __kasan_slab_free+0x102/0x150 [ 540.361147] ? kasan_slab_free+0xe/0x10 [ 540.361151] ? kmem_cache_free+0x83/0x290 [ 540.361156] ? print_usage_bug+0xc0/0xc0 [ 540.361160] ? ext4_fallocate+0xa33/0x2300 [ 540.361165] ? vfs_fallocate+0x4b4/0x940 [ 540.361170] ? ksys_fallocate+0x56/0x90 [ 540.361174] ? __lock_acquire+0x7ec/0x4ec0 [ 540.361179] ? do_raw_spin_unlock+0xa7/0x2f0 [ 540.361184] ? trace_hardirqs_on+0x310/0x310 [ 540.361188] ? kasan_check_write+0x14/0x20 [ 540.361200] ? mark_held_locks+0x130/0x130 [ 540.361205] ? graph_lock+0x170/0x170 [ 540.361210] ? print_usage_bug+0xc0/0xc0 [ 540.361214] ? print_usage_bug+0xc0/0xc0 [ 540.361218] ? graph_lock+0x170/0x170 [ 540.361224] ? check_preemption_disabled+0x48/0x200 [ 540.361229] ? check_preemption_disabled+0x48/0x200 [ 540.361233] ? __lock_is_held+0xb5/0x140 [ 540.361238] ? rcu_read_lock_sched_held+0x108/0x120 [ 540.361243] ? preempt_count_add+0x7d/0x160 [ 540.361248] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 540.361253] ? __mnt_want_write_file+0xa2/0xc0 [ 540.361258] ext4_ioctl+0x3154/0x4210 [ 540.361262] ? ext4_ioctl_group_add+0x560/0x560 [ 540.361268] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 540.361273] ? kasan_check_read+0x11/0x20 [ 540.361278] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 540.361282] ? rcu_bh_qs+0xc0/0xc0 [ 540.361288] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 540.361293] ? avc_has_extended_perms+0xab2/0x15a0 [ 540.361297] ? avc_ss_reset+0x190/0x190 [ 540.361302] ? find_held_lock+0x36/0x1c0 [ 540.361306] ? dput.part.26+0x241/0x790 [ 540.361311] ? kasan_check_read+0x11/0x20 [ 540.361315] ? ___might_sleep+0x1ed/0x300 [ 540.361319] ? rcu_bh_qs+0xc0/0xc0 [ 540.361324] ? arch_local_save_flags+0x40/0x40 [ 540.361329] ? kasan_check_write+0x14/0x20 [ 540.361333] ? do_raw_spin_lock+0xc1/0x200 [ 540.361338] ? ext4_ioctl_group_add+0x560/0x560 [ 540.361343] do_vfs_ioctl+0x1de/0x1720 [ 540.361347] ? ioctl_preallocate+0x300/0x300 [ 540.361352] ? selinux_file_mprotect+0x620/0x620 [ 540.361358] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 540.361362] ? do_syscall_64+0x9a/0x820 [ 540.361368] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 540.361372] ? security_file_ioctl+0x94/0xc0 [ 540.361376] ksys_ioctl+0xa9/0xd0 [ 540.361381] __x64_sys_ioctl+0x73/0xb0 [ 540.361385] do_syscall_64+0x1b9/0x820 [ 540.361391] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 540.361396] ? syscall_return_slowpath+0x5e0/0x5e0 [ 540.361401] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 540.361405] ? trace_hardirqs_on_caller+0x310/0x310 [ 540.361410] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 540.361415] ? prepare_exit_to_usermode+0x291/0x3b0 [ 540.361421] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 540.361426] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 540.361430] RIP: 0033:0x440169 [ 540.361444] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 540.361449] RSP: 002b:00007ffd53fc8248 EFLAGS: 00000217 ORIG_RAX: 0000000000000010 [ 540.361470] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440169 [ 540.361477] RDX: 0000000020000040 RSI: 00000000c028660f RDI: 0000000000000003 [ 540.361484] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 540.361490] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004019f0 [ 540.361497] R13: 0000000000401a80 R14: 0000000000000000 R15: 0000000000000000 [ 540.362959] Kernel panic - not syncing: hung_task: blocked tasks [ 540.850463] CPU: 0 PID: 988 Comm: khungtaskd Not tainted 4.19.0-rc5+ #33 [ 540.857313] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 540.866666] Call Trace: [ 540.869268] dump_stack+0x1c4/0x2b4 [ 540.872907] ? dump_stack_print_info.cold.2+0x52/0x52 [ 540.878190] panic+0x238/0x4e7 [ 540.881401] ? add_taint.cold.5+0x16/0x16 [ 540.885568] ? nmi_trigger_cpumask_backtrace+0x16a/0x1ed [ 540.891026] ? nmi_trigger_cpumask_backtrace+0x1c4/0x1ed [ 540.896502] ? nmi_trigger_cpumask_backtrace+0x173/0x1ed [ 540.901964] ? nmi_trigger_cpumask_backtrace+0x16a/0x1ed [ 540.907429] watchdog+0xb4f/0x1050 [ 540.910998] ? reset_hung_task_detector+0xd0/0xd0 [ 540.915858] ? __kthread_parkme+0xce/0x1a0 [ 540.920115] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 540.925230] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 540.930344] ? lockdep_hardirqs_on+0x421/0x5c0 [ 540.934935] ? trace_hardirqs_on+0xbd/0x310 [ 540.939261] ? kasan_check_read+0x11/0x20 [ 540.943419] ? __kthread_parkme+0xce/0x1a0 [ 540.947667] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 540.953133] ? kasan_check_write+0x14/0x20 [ 540.957379] ? do_raw_spin_lock+0xc1/0x200 [ 540.961630] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 540.966744] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 540.972297] ? __kthread_parkme+0xfb/0x1a0 [ 540.976558] kthread+0x35a/0x420 [ 540.979933] ? reset_hung_task_detector+0xd0/0xd0 [ 540.984800] ? kthread_bind+0x40/0x40 [ 540.988620] ret_from_fork+0x3a/0x50 [ 540.993633] Kernel Offset: disabled [ 540.997268] Rebooting in 86400 seconds..