[info] Using makefile-style concurrent boot in runlevel 2. [ 25.866211] audit: type=1800 audit(1538550867.361:21): pid=5200 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 25.894379] audit: type=1800 audit(1538550867.361:22): pid=5200 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2447 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.12' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 597.206079] INFO: task kworker/u4:1:23 blocked for more than 140 seconds. [ 597.213252] Not tainted 4.19.0-rc6+ #41 [ 597.218499] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 597.226561] kworker/u4:1 D 9256 23 2 0x80000000 [ 597.232320] Workqueue: writeback wb_workfn (flush-8:0) [ 597.237746] Call Trace: [ 597.240361] __schedule+0x86c/0x1ed0 [ 597.244115] ? __sched_text_start+0x8/0x8 [ 597.248429] ? mark_held_locks+0xc7/0x130 [ 597.252569] ? graph_lock+0x170/0x170 [ 597.256453] ? graph_lock+0x170/0x170 [ 597.260246] ? lockdep_hardirqs_on+0x421/0x5c0 [ 597.264849] ? trace_hardirqs_on+0xbd/0x310 [ 597.269276] ? kasan_check_read+0x11/0x20 [ 597.273540] ? prepare_to_wait+0x1b3/0x3f0 [ 597.277880] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 597.283341] ? find_held_lock+0x36/0x1c0 [ 597.287533] schedule+0xfe/0x460 [ 597.290928] ? wait_transaction_locked+0x206/0x310 [ 597.295932] ? __schedule+0x1ed0/0x1ed0 [ 597.299899] ? lock_release+0x970/0x970 [ 597.303854] ? lock_downgrade+0x900/0x900 [ 597.308125] ? check_preemption_disabled+0x48/0x200 [ 597.313138] wait_transaction_locked+0x24d/0x310 [ 597.317957] ? ext4_init_security+0x40/0x40 [ 597.322284] ? finish_wait+0x430/0x430 [ 597.326330] ? find_get_pages_range+0x9fd/0x12d0 [ 597.331082] add_transaction_credits+0x538/0xe50 [ 597.335965] ? __read_once_size_nocheck.constprop.8+0x10/0x10 [ 597.341883] ? ret_from_fork+0x3a/0x50 [ 597.345768] ? sub_reserved_credits+0x50/0x50 [ 597.350843] ? print_usage_bug+0xc0/0xc0 [ 597.354906] ? unwind_next_frame.part.7+0x1ae/0x9e0 [ 597.360015] ? unwind_dump+0x190/0x190 [ 597.363892] ? unwind_dump+0x190/0x190 [ 597.367851] ? __read_once_size_nocheck.constprop.8+0x10/0x10 [ 597.373729] ? ret_from_fork+0x3a/0x50 [ 597.377707] ? __lock_acquire+0x7ec/0x4ec0 [ 597.381937] ? lock_acquire+0x1ed/0x520 [ 597.385984] ? start_this_handle+0x2a8/0x1250 [ 597.390517] ? __save_stack_trace+0x7d/0xf0 [ 597.394849] ? lock_release+0x970/0x970 [ 597.398988] ? ret_from_fork+0x3a/0x50 [ 597.402893] ? save_stack+0xa9/0xd0 [ 597.406675] ? kasan_check_write+0x14/0x20 [ 597.410927] start_this_handle+0x41f/0x1250 [ 597.415251] ? wb_workfn+0x1008/0x1790 [ 597.419293] ? jbd2_journal_free_reserved+0x110/0x110 [ 597.424492] ? find_held_lock+0x36/0x1c0 [ 597.428703] ? graph_lock+0x170/0x170 [ 597.432573] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 597.438268] ? check_preemption_disabled+0x48/0x200 [ 597.443296] ? check_preemption_disabled+0x48/0x200 [ 597.448459] ? __lock_is_held+0xb5/0x140 [ 597.452586] ? rcu_read_lock_sched_held+0x108/0x120 [ 597.457858] ? kmem_cache_alloc+0x33a/0x730 [ 597.462219] jbd2__journal_start+0x3c9/0xa90 [ 597.466897] ? arch_local_save_flags+0x40/0x40 [ 597.471501] ? jbd2_write_access_granted.part.8+0x410/0x410 [ 597.478374] ? __might_sleep+0x95/0x190 [ 597.482373] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 597.488179] __ext4_journal_start_sb+0x1a5/0x5f0 [ 597.492976] ? ext4_writepages+0x18ba/0x4110 [ 597.497563] ? ext4_journal_abort_handle.isra.4+0x260/0x260 [ 597.503298] ? __lock_is_held+0xb5/0x140 [ 597.507536] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 597.513092] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 597.518715] ? ext4_meta_trans_blocks+0x25f/0x310 [ 597.523549] ext4_writepages+0x18ba/0x4110 [ 597.527906] ? dd_prepare_request+0x10/0x10 [ 597.532245] ? blk_mq_do_dispatch_ctx+0x6d0/0x6d0 [ 597.537170] ? ext4_mark_inode_dirty+0xb30/0xb30 [ 597.541920] ? find_held_lock+0x36/0x1c0 [ 597.546139] ? hctx_unlock+0xde/0x150 [ 597.549966] ? kasan_check_read+0x11/0x20 [ 597.554121] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 597.559570] ? find_held_lock+0x36/0x1c0 [ 597.563651] ? rcu_bh_qs+0xc0/0xc0 [ 597.567322] ? print_usage_bug+0xc0/0xc0 [ 597.571409] ? __lock_acquire+0x7ec/0x4ec0 [ 597.575650] ? __blk_mq_run_hw_queue+0x1c2/0x260 [ 597.580582] ? blk_mq_bio_to_request+0x940/0x940 [ 597.585361] ? print_usage_bug+0xc0/0xc0 [ 597.589568] ? mark_held_locks+0x130/0x130 [ 597.593824] ? graph_lock+0x170/0x170 [ 597.597783] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 597.603333] ? check_preemption_disabled+0x48/0x200 [ 597.609445] ? check_preemption_disabled+0x48/0x200 [ 597.614485] ? ext4_mark_inode_dirty+0xb30/0xb30 [ 597.619454] do_writepages+0x9a/0x1a0 [ 597.623267] ? ext4_mark_inode_dirty+0xb30/0xb30 [ 597.628152] ? do_writepages+0x9a/0x1a0 [ 597.632146] __writeback_single_inode+0x20a/0x1620 [ 597.637209] ? __mark_inode_dirty+0x1510/0x1510 [ 597.641893] ? mark_held_locks+0x130/0x130 [ 597.646274] ? __lock_acquire+0x7ec/0x4ec0 [ 597.650517] ? __lock_acquire+0x7ec/0x4ec0 [ 597.654768] ? find_held_lock+0x36/0x1c0 [ 597.659076] ? wbc_attach_and_unlock_inode+0x5c0/0xa30 [ 597.664380] ? lock_downgrade+0x900/0x900 [ 597.668723] ? find_held_lock+0x13f/0x1c0 [ 597.672898] ? kasan_check_read+0x11/0x20 [ 597.677192] ? do_raw_spin_unlock+0xa7/0x2f0 [ 597.681622] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 597.686336] ? __lock_is_held+0xb5/0x140 [ 597.690423] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 597.696091] ? wbc_attach_and_unlock_inode+0x675/0xa30 [ 597.701378] ? __writeback_single_inode+0x1620/0x1620 [ 597.706720] ? kasan_check_write+0x14/0x20 [ 597.710972] ? do_raw_spin_lock+0xc1/0x200 [ 597.715220] writeback_sb_inodes+0x71f/0x11d0 [ 597.719911] ? wbc_detach_inode+0x940/0x940 [ 597.724244] ? check_preemption_disabled+0x48/0x200 [ 597.729491] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 597.735046] ? queue_io+0x3dd/0x800 [ 597.739894] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 597.745458] __writeback_inodes_wb+0x1b9/0x340 [ 597.750173] ? writeback_sb_inodes+0x11d0/0x11d0 [ 597.754945] ? __lock_is_held+0xb5/0x140 [ 597.759225] wb_writeback+0xa73/0xfc0 [ 597.763050] ? writeback_inodes_wb.constprop.49+0x330/0x330 [ 597.768919] ? widen_string+0xe0/0x2e0 [ 597.772828] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 597.778150] ? print_usage_bug+0xc0/0xc0 [ 597.782217] ? graph_lock+0x170/0x170 [ 597.786155] ? string+0x225/0x2d0 [ 597.789624] ? widen_string+0x2e0/0x2e0 [ 597.793615] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 597.798768] ? find_next_bit+0x104/0x130 [ 597.802843] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 597.807979] ? find_next_bit+0x104/0x130 [ 597.812121] ? cpumask_next+0x41/0x50 [ 597.816057] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 597.821096] ? get_nr_dirty_inodes+0xd6/0x130 [ 597.825647] ? __local_bh_enable_ip+0x160/0x260 [ 597.830476] ? get_nr_dirty_pages+0x17c/0x1f0 [ 597.834983] ? _raw_spin_unlock_bh+0x30/0x40 [ 597.839538] ? inode_sleep_on_writeback+0x240/0x240 [ 597.844570] ? wb_workfn+0x521/0x1790 [ 597.848519] ? wb_workfn+0x521/0x1790 [ 597.852332] ? __local_bh_enable_ip+0x160/0x260 [ 597.857170] wb_workfn+0x1008/0x1790 [ 597.860899] ? __lock_acquire+0x7ec/0x4ec0 [ 597.865147] ? inode_wait_for_writeback+0x40/0x40 [ 597.871113] ? mark_held_locks+0x130/0x130 [ 597.875365] ? mark_held_locks+0x130/0x130 [ 597.879762] ? graph_lock+0x170/0x170 [ 597.883573] ? set_next_entity+0x30c/0xc40 [ 597.887940] ? dequeue_entity+0x3f4/0x1770 [ 597.892184] ? rcu_read_lock_sched_held+0x108/0x120 [ 597.897331] ? select_task_rq_fair+0x34f0/0x34f0 [ 597.902099] ? reweight_task+0x130/0x130 [ 597.906294] ? graph_lock+0x170/0x170 [ 597.910115] ? debug_object_deactivate+0x2eb/0x450 [ 597.915047] ? lock_downgrade+0x900/0x900 [ 597.919350] ? find_held_lock+0x36/0x1c0 [ 597.923436] ? graph_lock+0x170/0x170 [ 597.927413] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 597.932965] ? check_preemption_disabled+0x48/0x200 [ 597.938147] ? check_preemption_disabled+0x48/0x200 [ 597.943185] ? __lock_is_held+0xb5/0x140 [ 597.947477] process_one_work+0xc90/0x1b90 [ 597.951721] ? mark_held_locks+0x130/0x130 [ 597.956095] ? pwq_dec_nr_in_flight+0x4a0/0x4a0 [ 597.960772] ? __switch_to_asm+0x40/0x70 [ 597.964833] ? __switch_to_asm+0x34/0x70 [ 597.969028] ? __switch_to_asm+0x34/0x70 [ 597.973097] ? __switch_to_asm+0x40/0x70 [ 597.977275] ? __switch_to_asm+0x34/0x70 [ 597.981341] ? __switch_to_asm+0x40/0x70 [ 597.985406] ? __switch_to_asm+0x34/0x70 [ 597.989648] ? __switch_to_asm+0x40/0x70 [ 597.993726] ? __schedule+0x874/0x1ed0 [ 597.998720] ? check_preemption_disabled+0x48/0x200 [ 598.003767] ? graph_lock+0x170/0x170 [ 598.007708] ? lock_downgrade+0x900/0x900 [ 598.011877] ? lockdep_hardirqs_on+0x421/0x5c0 [ 598.016646] ? retint_kernel+0x2d/0x2d [ 598.020561] ? find_held_lock+0x36/0x1c0 [ 598.024642] ? lock_acquire+0x1ed/0x520 [ 598.028804] ? worker_thread+0x3e0/0x1390 [ 598.032970] ? lock_release+0x970/0x970 [ 598.037069] ? trace_hardirqs_off+0xb8/0x310 [ 598.041484] ? kasan_check_read+0x11/0x20 [ 598.045639] ? worker_thread+0x3e0/0x1390 [ 598.049939] ? trace_hardirqs_on+0x310/0x310 [ 598.054386] ? kasan_check_write+0x14/0x20 [ 598.058756] ? do_raw_spin_lock+0xc1/0x200 [ 598.063004] worker_thread+0x17f/0x1390 [ 598.067358] ? __switch_to_asm+0x34/0x70 [ 598.071452] ? process_one_work+0x1b90/0x1b90 [ 598.076288] ? graph_lock+0x170/0x170 [ 598.080111] ? __sched_text_start+0x8/0x8 [ 598.084270] ? find_held_lock+0x36/0x1c0 [ 598.088485] ? __kthread_parkme+0xce/0x1a0 [ 598.092734] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 598.097963] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 598.103074] ? lockdep_hardirqs_on+0x421/0x5c0 [ 598.107781] ? trace_hardirqs_on+0xbd/0x310 [ 598.112113] ? kasan_check_read+0x11/0x20 [ 598.116420] ? __kthread_parkme+0xce/0x1a0 [ 598.120667] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 598.127208] ? kasan_check_write+0x14/0x20 [ 598.131457] ? do_raw_spin_lock+0xc1/0x200 [ 598.135702] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 598.141008] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 598.146680] ? __kthread_parkme+0xfb/0x1a0 [ 598.150930] kthread+0x35a/0x420 [ 598.154297] ? process_one_work+0x1b90/0x1b90 [ 598.158936] ? kthread_bind+0x40/0x40 [ 598.162811] ret_from_fork+0x3a/0x50 [ 598.166805] INFO: task jbd2/sda1-8:3077 blocked for more than 140 seconds. [ 598.173824] Not tainted 4.19.0-rc6+ #41 [ 598.178456] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 598.186553] jbd2/sda1-8 D18264 3077 2 0x80000000 [ 598.192208] Call Trace: [ 598.194810] __schedule+0x86c/0x1ed0 [ 598.198711] ? __sched_text_start+0x8/0x8 [ 598.202879] ? mark_held_locks+0xc7/0x130 [ 598.207173] ? graph_lock+0x170/0x170 [ 598.210982] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 598.216241] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 598.221369] ? lockdep_hardirqs_on+0x421/0x5c0 [ 598.226160] ? trace_hardirqs_on+0xbd/0x310 [ 598.230498] ? kasan_check_read+0x11/0x20 [ 598.234650] ? prepare_to_wait+0x1b3/0x3f0 [ 598.239090] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 598.244559] ? find_held_lock+0x36/0x1c0 [ 598.248793] schedule+0xfe/0x460 [ 598.252175] ? lock_downgrade+0x900/0x900 [ 598.257582] ? __schedule+0x1ed0/0x1ed0 [ 598.261609] ? kasan_check_read+0x11/0x20 [ 598.265768] ? do_raw_spin_unlock+0xa7/0x2f0 [ 598.270434] ? do_raw_write_trylock+0x1c0/0x1c0 [ 598.275114] ? kasan_check_write+0x14/0x20 [ 598.279614] ? do_raw_spin_lock+0xc1/0x200 [ 598.283877] jbd2_journal_commit_transaction+0xd42/0x89f8 [ 598.289566] ? print_usage_bug+0xc0/0xc0 [ 598.293675] ? journal_submit_commit_record+0xb60/0xb60 [ 598.299211] ? __lock_acquire+0x7ec/0x4ec0 [ 598.303454] ? mark_held_locks+0x130/0x130 [ 598.307830] ? __update_load_avg_blocked_se+0x730/0x730 [ 598.313210] ? __update_load_avg_se+0xb90/0xb90 [ 598.318006] ? __lock_is_held+0xb5/0x140 [ 598.322094] ? update_load_avg+0x387/0x2470 [ 598.326642] ? print_usage_bug+0xc0/0xc0 [ 598.330723] ? finish_wait+0x430/0x430 [ 598.334622] ? lock_downgrade+0x900/0x900 [ 598.338914] ? graph_lock+0x170/0x170 [ 598.342743] ? __lock_acquire+0x7ec/0x4ec0 [ 598.347124] ? graph_lock+0x170/0x170 [ 598.350947] ? print_usage_bug+0xc0/0xc0 [ 598.355036] ? mark_held_locks+0x130/0x130 [ 598.359414] ? find_held_lock+0x36/0x1c0 [ 598.363493] ? print_usage_bug+0xc0/0xc0 [ 598.367698] ? __lock_acquire+0x7ec/0x4ec0 [ 598.371948] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 598.377915] ? kasan_check_read+0x11/0x20 [ 598.382080] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 598.388442] ? rcu_bh_qs+0xc0/0xc0 [ 598.392008] ? __lock_acquire+0x7ec/0x4ec0 [ 598.396381] ? mark_held_locks+0x130/0x130 [ 598.400636] ? update_curr+0x4ec/0xbe0 [ 598.404531] ? print_usage_bug+0xc0/0xc0 [ 598.408740] ? graph_lock+0x170/0x170 [ 598.412550] ? __account_cfs_rq_runtime+0x790/0x790 [ 598.417721] ? mark_held_locks+0x130/0x130 [ 598.421974] ? graph_lock+0x170/0x170 [ 598.425905] ? print_usage_bug+0xc0/0xc0 [ 598.429975] ? pick_next_task_fair+0xbad/0x17c0 [ 598.434830] ? lock_downgrade+0x900/0x900 [ 598.439139] ? graph_lock+0x170/0x170 [ 598.442954] ? print_usage_bug+0xc0/0xc0 [ 598.447158] ? lock_is_held_type+0x210/0x210 [ 598.451588] ? __lock_acquire+0x7ec/0x4ec0 [ 598.455963] ? find_held_lock+0x36/0x1c0 [ 598.460050] ? find_held_lock+0x36/0x1c0 [ 598.464137] ? __lock_acquire+0x7ec/0x4ec0 [ 598.468514] ? __lock_acquire+0x7ec/0x4ec0 [ 598.472756] ? kasan_check_read+0x11/0x20 [ 598.477028] ? finish_task_switch+0x1f5/0x900 [ 598.481540] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 598.487205] ? compat_start_thread+0x80/0x80 [ 598.491641] ? mark_held_locks+0x130/0x130 [ 598.496003] ? mark_held_locks+0x130/0x130 [ 598.500248] ? kasan_check_write+0x14/0x20 [ 598.504486] ? finish_task_switch+0x2f5/0x900 [ 598.509150] ? graph_lock+0x170/0x170 [ 598.512963] ? preempt_notifier_register+0x200/0x200 [ 598.519155] ? __switch_to_asm+0x34/0x70 [ 598.523224] ? __switch_to_asm+0x34/0x70 [ 598.527443] ? __switch_to_asm+0x34/0x70 [ 598.531537] ? __switch_to_asm+0x40/0x70 [ 598.535611] ? __switch_to_asm+0x34/0x70 [ 598.539813] ? __switch_to_asm+0x40/0x70 [ 598.543886] ? __switch_to_asm+0x34/0x70 [ 598.548074] ? __switch_to_asm+0x34/0x70 [ 598.552151] ? __switch_to_asm+0x40/0x70 [ 598.556361] ? __switch_to_asm+0x34/0x70 [ 598.560439] ? graph_lock+0x170/0x170 [ 598.564253] ? lock_acquire+0x1ed/0x520 [ 598.569007] ? lock_timer_base+0xbb/0x2b0 [ 598.573175] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 598.578419] ? find_held_lock+0x36/0x1c0 [ 598.582511] ? try_to_del_timer_sync+0xec/0x140 [ 598.587313] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 598.592430] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 598.597680] ? lockdep_hardirqs_on+0x421/0x5c0 [ 598.602280] ? trace_hardirqs_on+0xbd/0x310 [ 598.606734] ? kasan_check_read+0x11/0x20 [ 598.610899] ? try_to_del_timer_sync+0xec/0x140 [ 598.615571] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 598.621181] ? stub_timer+0x10/0x10 [ 598.624819] ? del_timer_sync+0xf8/0x270 [ 598.629025] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 598.634143] ? try_to_del_timer_sync+0xec/0x140 [ 598.638975] ? del_timer+0x150/0x150 [ 598.642720] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 598.649342] kjournald2+0x26d/0xb30 [ 598.652996] ? __bpf_trace_jbd2_end_commit+0x30/0x30 [ 598.658240] ? __kthread_parkme+0xce/0x1a0 [ 598.662489] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 598.667731] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 598.672937] ? lockdep_hardirqs_on+0x421/0x5c0 [ 598.677662] ? trace_hardirqs_on+0xbd/0x310 [ 598.681996] ? finish_wait+0x430/0x430 [ 598.686064] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 598.691539] ? kasan_check_write+0x14/0x20 [ 598.695921] ? do_raw_spin_lock+0xc1/0x200 [ 598.700190] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 598.705315] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 598.710993] ? __kthread_parkme+0xfb/0x1a0 [ 598.715243] kthread+0x35a/0x420 [ 598.718743] ? __bpf_trace_jbd2_end_commit+0x30/0x30 [ 598.723856] ? kthread_bind+0x40/0x40 [ 598.727789] ret_from_fork+0x3a/0x50 [ 598.731539] [ 598.731539] Showing all locks held in the system: [ 598.738002] 4 locks held by kworker/u4:1/23: [ 598.742410] #0: 00000000663ee89f ((wq_completion)"writeback"){+.+.}, at: process_one_work+0xb43/0x1b90 [ 598.752115] #1: 0000000046f839b7 ((work_completion)(&(&wb->dwork)->work)){+.+.}, at: process_one_work+0xb9a/0x1b90 [ 598.762848] #2: 00000000bd749d4a (&type->s_umount_key#29){++++}, at: trylock_super+0x22/0x110 [ 598.771849] #3: 0000000059cfd050 (&sbi->s_journal_flag_rwsem){.+.+}, at: do_writepages+0x9a/0x1a0 [ 598.782069] 1 lock held by khungtaskd/983: [ 598.786422] #0: 000000001a45b635 (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 [ 598.795072] 3 locks held by rs:main Q:Reg/5236: [ 598.799866] #0: 000000004e8b7605 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 [ 598.807994] #1: 00000000ac46418b (sb_writers#3){.+.+}, at: vfs_write+0x42a/0x560 [ 598.815664] #2: 0000000071510324 (&sb->s_type->i_mutex_key#9){+.+.}, at: ext4_file_write_iter+0x2a1/0x1420 [ 598.825725] 1 lock held by rsyslogd/5238: [ 598.829987] #0: 00000000a568f07f (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 [ 598.838136] 2 locks held by getty/5328: [ 598.842113] #0: 00000000392fdb91 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 598.850518] #1: 0000000065e27bdd (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 598.859615] 2 locks held by getty/5329: [ 598.863586] #0: 0000000041ddb0c7 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 598.871984] #1: 000000007a06dd80 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 598.880979] 2 locks held by getty/5330: [ 598.884951] #0: 00000000f7795cb6 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 598.893374] #1: 000000005963a661 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 598.902383] 2 locks held by getty/5331: [ 598.907420] #0: 00000000e26409f1 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 598.915924] #1: 00000000e76daf76 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 598.924811] 2 locks held by getty/5332: [ 598.928905] #0: 0000000012919b2e (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 598.937287] #1: 000000002b70033a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 598.946283] 2 locks held by getty/5333: [ 598.950269] #0: 00000000a89ffb64 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 598.958694] #1: 00000000de6bb7d8 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 598.967700] 2 locks held by getty/5334: [ 598.971672] #0: 00000000fe95e611 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 598.980073] #1: 00000000b3c8c2b5 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 [ 598.989082] 6 locks held by syz-executor280/5359: [ 598.993935] [ 598.995557] ============================================= [ 598.995557] [ 599.002729] NMI backtrace for cpu 1 [ 599.006417] CPU: 1 PID: 983 Comm: khungtaskd Not tainted 4.19.0-rc6+ #41 [ 599.013257] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 599.022624] Call Trace: [ 599.025217] dump_stack+0x1c4/0x2b4 [ 599.029027] ? dump_stack_print_info.cold.2+0x52/0x52 [ 599.034225] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 599.039782] nmi_cpu_backtrace.cold.3+0x63/0xa2 [ 599.044534] ? lapic_can_unplug_cpu.cold.27+0x3f/0x3f [ 599.049733] nmi_trigger_cpumask_backtrace+0x1b3/0x1ed [ 599.055019] arch_trigger_cpumask_backtrace+0x14/0x20 [ 599.060211] watchdog+0xb3e/0x1050 [ 599.063767] ? reset_hung_task_detector+0xd0/0xd0 [ 599.068627] ? __kthread_parkme+0xce/0x1a0 [ 599.072868] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 599.077977] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 599.083089] ? lockdep_hardirqs_on+0x421/0x5c0 [ 599.087682] ? trace_hardirqs_on+0xbd/0x310 [ 599.092010] ? kasan_check_read+0x11/0x20 [ 599.096164] ? __kthread_parkme+0xce/0x1a0 [ 599.100406] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 599.105859] ? kasan_check_write+0x14/0x20 [ 599.110098] ? do_raw_spin_lock+0xc1/0x200 [ 599.114350] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 599.119456] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 599.124998] ? __kthread_parkme+0xfb/0x1a0 [ 599.129242] kthread+0x35a/0x420 [ 599.132620] ? reset_hung_task_detector+0xd0/0xd0 [ 599.137473] ? kthread_bind+0x40/0x40 [ 599.141307] ret_from_fork+0x3a/0x50 [ 599.145138] Sending NMI from CPU 1 to CPUs 0: [ 599.151165] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.315 msecs [ 599.151688] NMI backtrace for cpu 0 [ 599.151696] CPU: 0 PID: 5359 Comm: syz-executor280 Not tainted 4.19.0-rc6+ #41 [ 599.151703] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 599.151708] RIP: 0010:ext4_find_extent+0x149/0x9b0 [ 599.151722] Code: 39 e5 0f 8c c4 06 00 00 e8 b4 a8 6d ff 48 8b 45 c8 48 8d 78 20 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 af 07 00 00 48 8b 45 c8 48 8d 78 28 4c 89 70 20 48 b8 00 00 [ 599.151727] RSP: 0018:ffff8801ba8cf150 EFLAGS: 00000246 [ 599.151737] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff82110cbe [ 599.151744] RDX: 1ffff1003a38ecf4 RSI: ffffffff82110ccc RDI: ffff8801d1c767a0 [ 599.151750] RBP: ffff8801ba8cf1b0 R08: ffff8801ba8ac6c0 R09: 1ffffffff1273955 [ 599.151756] R10: ffffed003b5e4732 R11: ffff8801daf23993 R12: 0000000000000000 [ 599.151762] R13: 0000000000000001 R14: ffff8801b6b99140 R15: ffff8801d1c76780 [ 599.151769] FS: 000000000146d880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 599.151775] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 599.151781] CR2: ffffffffff600400 CR3: 00000001baa0e000 CR4: 00000000001406f0 [ 599.151787] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 599.151794] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 599.151797] Call Trace: [ 599.151802] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 599.151807] ? ext4_ext_rm_idx+0xa00/0xab0 [ 599.151812] mext_check_coverage.constprop.13+0x2b0/0x510 [ 599.151817] ? mext_page_mkuptodate+0x12b0/0x12b0 [ 599.151822] ext4_move_extents+0x2784/0x3c20 [ 599.151827] ? ext4_double_up_write_data_sem+0x30/0x30 [ 599.151831] ? save_stack+0xa9/0xd0 [ 599.151835] ? save_stack+0x43/0xd0 [ 599.151839] ? __kasan_slab_free+0x102/0x150 [ 599.151843] ? kasan_slab_free+0xe/0x10 [ 599.151848] ? kmem_cache_free+0x83/0x290 [ 599.151852] ? print_usage_bug+0xc0/0xc0 [ 599.151856] ? ext4_fallocate+0xa33/0x2300 [ 599.151861] ? vfs_fallocate+0x4b4/0x940 [ 599.151865] ? ksys_fallocate+0x56/0x90 [ 599.151869] ? do_syscall_64+0x1b9/0x820 [ 599.151874] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 599.151879] ? trace_hardirqs_off+0xb8/0x310 [ 599.151883] ? kasan_check_read+0x11/0x20 [ 599.151888] ? do_raw_spin_unlock+0xa7/0x2f0 [ 599.151892] ? trace_hardirqs_on+0x310/0x310 [ 599.151896] ? kasan_check_write+0x14/0x20 [ 599.151901] ? graph_lock+0x170/0x170 [ 599.151906] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 599.151911] ? check_preemption_disabled+0x48/0x200 [ 599.151915] ? check_preemption_disabled+0x48/0x200 [ 599.151920] ? graph_lock+0x170/0x170 [ 599.151924] ? __lock_is_held+0xb5/0x140 [ 599.151928] ? graph_lock+0x170/0x170 [ 599.151933] ? check_preemption_disabled+0x48/0x200 [ 599.151937] ? check_preemption_disabled+0x48/0x200 [ 599.151942] ? __lock_is_held+0xb5/0x140 [ 599.151947] ? rcu_read_lock_sched_held+0x108/0x120 [ 599.151951] ? preempt_count_add+0x7d/0x160 [ 599.151956] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 599.151961] ? __mnt_want_write_file+0xa2/0xc0 [ 599.151965] ext4_ioctl+0x3154/0x4210 [ 599.151970] ? ext4_ioctl_group_add+0x560/0x560 [ 599.151974] ? find_held_lock+0x36/0x1c0 [ 599.151978] ? ext4_fallocate+0x375/0x2300 [ 599.151983] ? lock_downgrade+0x900/0x900 [ 599.151988] ? ext4_alloc_file_blocks+0x7f2/0xaf0 [ 599.151993] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 599.151998] ? check_preemption_disabled+0x48/0x200 [ 599.152003] ? check_preemption_disabled+0x48/0x200 [ 599.152007] ? smk_access+0x53b/0x700 [ 599.152011] ? __lock_is_held+0xb5/0x140 [ 599.152017] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 599.152020] ? smack_log+0x423/0x590 [ 599.152025] ? smk_access_entry+0x310/0x310 [ 599.152029] ? ext4_fallocate+0x4a6/0x2300 [ 599.152034] ? graph_lock+0x170/0x170 [ 599.152038] ? smk_tskacc+0x3dd/0x520 [ 599.152042] ? ext4_insert_range+0x1410/0x1410 [ 599.152047] ? smack_privileged+0xd0/0xd0 [ 599.152051] ? ext4_ioctl_group_add+0x560/0x560 [ 599.152056] do_vfs_ioctl+0x1de/0x1720 [ 599.152060] ? vfs_fallocate+0x7ab/0x940 [ 599.152064] ? ioctl_preallocate+0x300/0x300 [ 599.152068] ? smk_curacc+0x7f/0xa0 [ 599.152073] ? smack_file_ioctl+0x210/0x3c0 [ 599.152077] ? fget_raw+0x20/0x20 [ 599.152081] ? smack_file_lock+0x2e0/0x2e0 [ 599.152085] ? do_syscall_64+0x9a/0x820 [ 599.152089] ? do_syscall_64+0x9a/0x820 [ 599.152095] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 599.152099] ? security_file_ioctl+0x94/0xc0 [ 599.152103] ksys_ioctl+0xa9/0xd0 [ 599.152114] __x64_sys_ioctl+0x73/0xb0 [ 599.152118] do_syscall_64+0x1b9/0x820 [ 599.152123] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 599.152128] ? syscall_return_slowpath+0x5e0/0x5e0 [ 599.152133] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 599.152138] ? trace_hardirqs_on_caller+0x310/0x310 [ 599.152143] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 599.152147] ? prepare_exit_to_usermode+0x291/0x3b0 [ 599.152152] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 599.152157] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 599.152161] RIP: 0033:0x440169 [ 599.152174] 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 [ 599.152179] RSP: 002b:00007ffeb8e88be8 EFLAGS: 00000217 ORIG_RAX: 0000000000000010 [ 599.152190] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440169 [ 599.152196] RDX: 0000000020000040 RSI: 00000000c028660f RDI: 0000000000000003 [ 599.152202] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 599.152208] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004019f0 [ 599.152215] R13: 0000000000401a80 R14: 0000000000000000 R15: 0000000000000000 [ 599.154566] Kernel panic - not syncing: hung_task: blocked tasks [ 599.701895] CPU: 1 PID: 983 Comm: khungtaskd Not tainted 4.19.0-rc6+ #41 [ 599.708731] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 599.718114] Call Trace: [ 599.720714] dump_stack+0x1c4/0x2b4 [ 599.724349] ? dump_stack_print_info.cold.2+0x52/0x52 [ 599.729607] panic+0x238/0x4e7 [ 599.732826] ? add_taint.cold.5+0x16/0x16 [ 599.736984] ? nmi_trigger_cpumask_backtrace+0x16a/0x1ed [ 599.742447] ? nmi_trigger_cpumask_backtrace+0x1c4/0x1ed [ 599.747897] ? nmi_trigger_cpumask_backtrace+0x173/0x1ed [ 599.753347] ? nmi_trigger_cpumask_backtrace+0x16a/0x1ed [ 599.758804] watchdog+0xb4f/0x1050 [ 599.762356] ? reset_hung_task_detector+0xd0/0xd0 [ 599.767204] ? __kthread_parkme+0xce/0x1a0 [ 599.771447] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 599.776550] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 599.781656] ? lockdep_hardirqs_on+0x421/0x5c0 [ 599.786244] ? trace_hardirqs_on+0xbd/0x310 [ 599.790566] ? kasan_check_read+0x11/0x20 [ 599.794727] ? __kthread_parkme+0xce/0x1a0 [ 599.798970] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 599.804424] ? kasan_check_write+0x14/0x20 [ 599.808664] ? do_raw_spin_lock+0xc1/0x200 [ 599.812906] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 599.818025] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 599.823564] ? __kthread_parkme+0xfb/0x1a0 [ 599.827818] kthread+0x35a/0x420 [ 599.831193] ? reset_hung_task_detector+0xd0/0xd0 [ 599.836072] ? kthread_bind+0x40/0x40 [ 599.839876] ret_from_fork+0x3a/0x50 [ 599.844861] Kernel Offset: disabled [ 599.848491] Rebooting in 86400 seconds..