Warning: Permanently added '10.128.10.2' (ECDSA) to the list of known hosts. executing program [ 859.312931] INFO: task kworker/u4:0:6 blocked for more than 140 seconds. [ 859.319812] Not tainted 4.9.128+ #42 [ 859.324231] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 859.332182] kworker/u4:0 D24632 6 2 0x80000000 [ 859.337990] Workqueue: writeback wb_workfn (flush-8:0) [ 859.343593] ffff8801da678000 0000000000000000 ffff8801d4c60580 ffff8801da6b2f80 [ 859.351578] ffff8801db721018 ffff8801da687130 ffffffff827e7bc2 ffff8801da678000 [ 859.359809] 0000000000000000 0000000000000000 0000000000000000 ffff8801db7218f0 [ 859.367910] Call Trace: [ 859.370486] [] ? __schedule+0x662/0x1b10 [ 859.376364] [] schedule+0x7f/0x1b0 [ 859.381561] [] wait_transaction_locked+0x1a5/0x230 [ 859.388205] [] ? wait_transaction_locked+0x15c/0x230 [ 859.395152] [] ? ext4_init_security+0x40/0x40 [ 859.401355] [] ? save_stack_trace+0x16/0x20 [ 859.407383] [] ? autoremove_wake_function.part.0+0x130/0x130 [ 859.414876] [] ? __ext4_journal_start_sb+0x10c/0x460 [ 859.421611] [] ? ext4_writepages+0xe75/0x2e00 [ 859.427783] [] ? do_writepages+0xef/0x1d0 [ 859.433622] [] ? __writeback_single_inode+0xd9/0x1020 [ 859.440440] [] ? writeback_sb_inodes+0x4ac/0xe70 [ 859.446928] [] ? __writeback_inodes_wb+0xfb/0x1e0 [ 859.453479] [] add_transaction_credits+0x408/0x980 [ 859.460039] [] ? ext4_init_io_end+0x25/0x100 [ 859.466124] [] ? ext4_writepages+0xcd0/0x2e00 [ 859.472260] [] ? __writeback_single_inode+0xd9/0x1020 [ 859.479153] [] ? sub_reserved_credits+0x40/0x40 [ 859.485503] [] ? start_this_handle+0x239/0xe40 [ 859.491753] [] start_this_handle+0x340/0xe40 [ 859.497833] [] ? jbd2_journal_free_reserved+0x100/0x100 [ 859.504906] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 859.511729] [] ? kmem_cache_alloc+0x246/0x2b0 [ 859.517903] [] jbd2__journal_start+0x306/0x8b0 [ 859.524159] [] ? ext4_writepages+0xe75/0x2e00 [ 859.530283] [] __ext4_journal_start_sb+0x10c/0x460 [ 859.536916] [] ? ext4_meta_trans_blocks+0x214/0x2d0 [ 859.543609] [] ext4_writepages+0xe75/0x2e00 [ 859.549565] [] ? do_writepages+0xef/0x1d0 [ 859.555427] [] ? trace_hardirqs_on_caller+0x590/0x590 [ 859.562282] [] ? ext4_mark_inode_dirty+0xb40/0xb40 [ 859.568897] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 859.575701] [] ? trace_hardirqs_on+0x10/0x10 [ 859.581740] [] ? trace_hardirqs_on+0x10/0x10 [ 859.587822] [] ? ext4_mark_inode_dirty+0xb40/0xb40 [ 859.594424] [] do_writepages+0xef/0x1d0 [ 859.600026] [] ? page_writeback_cpu_online+0x20/0x20 [ 859.606820] [] ? check_preemption_disabled+0x3b/0x170 [ 859.613693] [] __writeback_single_inode+0xd9/0x1020 [ 859.620335] [] ? writeback_sb_inodes+0x39b/0xe70 [ 859.626886] [] writeback_sb_inodes+0x4ac/0xe70 [ 859.633156] [] ? __writeback_single_inode+0x1020/0x1020 [ 859.640150] [] ? down_read_trylock+0x6a/0xd0 [ 859.646436] [] ? trylock_super+0x20/0xf0 [ 859.652146] [] __writeback_inodes_wb+0xfb/0x1e0 [ 859.658505] [] wb_writeback+0x512/0xbd0 [ 859.664161] [] ? __writeback_inodes_wb+0x1e0/0x1e0 [ 859.670722] [] wb_workfn+0x8bc/0xe90 [ 859.676120] [] ? debug_object_deactivate+0x214/0x340 [ 859.682895] [] ? inode_wait_for_writeback+0x40/0x40 [ 859.689538] [] process_one_work+0x831/0x1530 [ 859.695624] [] ? process_one_work+0x774/0x1530 [ 859.701833] [] ? cancel_delayed_work_sync+0x20/0x20 [ 859.708533] [] worker_thread+0xd6/0x1140 [ 859.714280] [] kthread+0x26d/0x300 [ 859.719473] [] ? process_one_work+0x1530/0x1530 [ 859.725818] [] ? kthread_park+0xa0/0xa0 [ 859.731695] [] ? __switch_to_asm+0x34/0x70 [ 859.737701] [] ? kthread_park+0xa0/0xa0 [ 859.743382] [] ? kthread_park+0xa0/0xa0 [ 859.749006] [] ret_from_fork+0x5c/0x70 [ 859.754626] [ 859.754626] Showing all locks held in the system: [ 859.760932] 4 locks held by kworker/u4:0/6: [ 859.765261] #0: ("writeback"){.+.+.+}, at: [] process_one_work+0x73c/0x1530 [ 859.774694] #1: ((&(&wb->dwork)->work)){+.+.+.}, at: [] process_one_work+0x774/0x1530 [ 859.784888] #2: (&type->s_umount_key#32){++++.+}, at: [] trylock_super+0x20/0xf0 [ 859.794739] #3: (&sbi->s_journal_flag_rwsem){.+.+.+}, at: [] do_writepages+0xef/0x1d0 [ 859.804906] 2 locks held by khungtaskd/24: [ 859.809110] #0: (rcu_read_lock){......}, at: [] watchdog+0x11c/0xa20 [ 859.817810] #1: (tasklist_lock){.+.+..}, at: [] debug_show_all_locks+0x79/0x218 [ 859.827469] 3 locks held by rs:main Q:Reg/1887: [ 859.832107] #0: (&f->f_pos_lock){+.+.+.}, at: [] __fdget_pos+0xac/0xd0 [ 859.841128] #1: (sb_writers#4){.+.+.+}, at: [] vfs_write+0x3eb/0x520 [ 859.849974] #2: (&sb->s_type->i_mutex_key#10){+.+.+.}, at: [] ext4_file_write_iter+0x122/0xd70 [ 859.861070] 2 locks held by getty/2017: [ 859.865022] #0: (&tty->ldisc_sem){++++++}, at: [] ldsem_down_read+0x32/0x40 [ 859.874444] #1: (&ldata->atomic_read_lock){+.+...}, at: [] n_tty_read+0x202/0x16e0 [ 859.884469] 2 locks held by init/2148: [ 859.888326] #0: (sb_writers#4){.+.+.+}, at: [] vfs_write+0x3eb/0x520 [ 859.897167] #1: (&sb->s_type->i_mutex_key#10){+.+.+.}, at: [] ext4_file_write_iter+0x122/0xd70 [ 859.908340] [ 859.909939] ============================================= [ 859.909939] [ 859.917106] NMI backtrace for cpu 1 [ 859.920834] CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.128+ #42 [ 859.927298] ffff8801d9907d08 ffffffff81b2b9e9 0000000000000000 0000000000000001 [ 859.935395] 0000000000000001 0000000000000001 ffffffff81098180 ffff8801d9907d40 [ 859.943460] ffffffff81b36af9 0000000000000001 0000000000000000 0000000000000003 [ 859.951452] Call Trace: [ 859.954019] [] dump_stack+0xc1/0x128 [ 859.959362] [] ? irq_force_complete_move+0x330/0x330 [ 859.966089] [] nmi_cpu_backtrace.cold.0+0x48/0x87 [ 859.972559] [] ? irq_force_complete_move+0x330/0x330 [ 859.979284] [] nmi_trigger_cpumask_backtrace+0x12c/0x151 [ 859.986356] [] arch_trigger_cpumask_backtrace+0x14/0x20 [ 859.993340] [] watchdog+0x6ad/0xa20 [ 859.998586] [] ? watchdog+0x11c/0xa20 [ 860.004011] [] kthread+0x26d/0x300 [ 860.009173] [] ? reset_hung_task_detector+0x20/0x20 [ 860.015815] [] ? kthread_park+0xa0/0xa0 [ 860.021417] [] ? __switch_to_asm+0x34/0x70 [ 860.027271] [] ? kthread_park+0xa0/0xa0 [ 860.032867] [] ? kthread_park+0xa0/0xa0 [ 860.038478] [] ret_from_fork+0x5c/0x70 [ 860.044068] Sending NMI from CPU 1 to CPUs 0: [ 860.048836] NMI backtrace for cpu 0 [ 860.052480] CPU: 0 PID: 2146 Comm: syz-executor541 Not tainted 4.9.128+ #42 [ 860.060564] task: ffff8801cc0a97c0 task.stack: ffff8801cb308000 [ 860.066596] RIP: 0010:[] c [] ext4_find_extent+0x43/0x940 [ 860.075317] RSP: 0018:ffff8801cb30f640 EFLAGS: 00000a03 [ 860.080786] RAX: dffffc0000000000 RBX: ffff8801cbf1eac0 RCX: 0000000040000000 [ 860.088036] RDX: 1ffff100397e3d1a RSI: ffffffff8177329e RDI: ffff8801cbf1e8d6 [ 860.095277] RBP: ffff8801cb30f6a0 R08: 000000000000000c R09: ffff8801cb30f390 [ 860.102622] R10: ffffed0039661e65 R11: ffff8801cb30f32f R12: 00000000c37f30da [ 860.109869] R13: ffff8801cb30f8f8 R14: ffff8801cbf1e8d0 R15: 0000000000008002 [ 860.117118] FS: 00000000008fe880(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000 [ 860.125317] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 860.131172] CR2: 0000000020000080 CR3: 00000001cb069000 CR4: 00000000001606b0 [ 860.138555] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 860.145800] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 860.153090] Stack: [ 860.155220] ffffed0039661e65c ffff8801cb30f6f8c ffff8801cbf1eac0c c37f30da40000000c [ 860.163431] ffff8801cf481400c ffff8801cb30f6a0c ffffffff81772b9ec ffff8801cf481400c [ 860.171706] 00000000c37f30dac ffff8801cb30f8f8c ffff8801cbf1eac0c 0000000000008002c [ 860.179912] Call Trace: [ 860.182552] [] ? ext4_ext_drop_refs+0xae/0xe0 [ 860.188678] [] mext_check_coverage.constprop.2+0x256/0x400 [ 860.195930] [] ? ext4_check_blockref+0x1e0/0x1e0 [ 860.202334] [] ? down_write_nested+0x45/0xa0 [ 860.208985] [] ? ext4_double_down_write_data_sem+0x44/0x80 [ 860.216236] [] ext4_move_extents+0x17bb/0x2a50 [ 860.222439] [] ? ext4_double_up_write_data_sem+0x30/0x30 [ 860.229510] [] ? trace_hardirqs_on+0x10/0x10 [ 860.235559] [] ? trace_hardirqs_on+0x10/0x10 [ 860.241590] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 860.248449] [] ? check_preemption_disabled+0x3b/0x170 [ 860.255283] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 860.262093] [] ? preempt_count_add+0x7d/0x170 [ 860.268210] [] ? mnt_clone_write+0xe3/0x140 [ 860.274156] [] ? __mnt_want_write_file+0x97/0xb0 [ 860.280539] [] ext4_ioctl+0x27fc/0x3620 [ 860.286169] [] ? ext4_ioctl_setflags+0x5d0/0x5d0 [ 860.292663] [] ? __lock_acquire+0x654/0x4a10 [ 860.298693] [] ? avc_ss_reset+0x110/0x110 [ 860.304457] [] ? trace_hardirqs_on+0x10/0x10 [ 860.310487] [] ? ext4_reserve_inode_write+0x180/0x180 [ 860.317293] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 860.324016] [] ? __might_sleep+0x95/0x1a0 [ 860.329981] [] ? ext4_ioctl_setflags+0x5d0/0x5d0 [ 860.336361] [] do_vfs_ioctl+0x1ac/0x11a0 [ 860.342049] [] ? ioctl_preallocate+0x220/0x220 [ 860.348274] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 860.355015] [] ? selinux_parse_skb.constprop.42+0x1a90/0x1a90 [ 860.362528] [] ? security_file_ioctl+0x8f/0xc0 [ 860.368747] [] SyS_ioctl+0x8f/0xc0 [ 860.373917] [] ? do_vfs_ioctl+0x11a0/0x11a0 [ 860.379868] [] do_syscall_64+0x19f/0x550 [ 860.385562] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 860.392475] Code: c83 cec c38 c48 c89 c7d cb0 c48 c89 c55 ca8 c89 c75 cbc c89 c4d cb8 ce8 c02 c7f cba cff c49 c8d c7e c06 c48 cb8 c00 c00 c00 c00 c00 cfc cff cdf c48 c89 cfa c48 cc1 cea c03 c<0f> cb6 c14 c02 c48 c89 cf8 c83 ce0 c07 c83 cc0 c01 c38 cd0 c7c c08 c84 cd2 c0f c85 c [ 860.423684] Kernel panic - not syncing: hung_task: blocked tasks [ 860.429865] CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.128+ #42 [ 860.436342] ffff8801d9907cc8 ffffffff81b2b9e9 ffffffff82a783c0 00000000ffffffff [ 860.444374] 0000000000000000 0000000000000001 dffffc0000000000 ffff8801d9907d88 [ 860.452400] ffffffff813f6665 0000000041b58ab3 ffffffff82e289c3 ffffffff813f64a6 [ 860.460469] Call Trace: [ 860.463049] [] dump_stack+0xc1/0x128 [ 860.468403] [] panic+0x1bf/0x39f [ 860.473404] [] ? add_taint.cold.6+0x16/0x16 [ 860.479369] [] ? ___preempt_schedule+0x16/0x18 [ 860.485589] [] ? nmi_trigger_cpumask_backtrace+0x102/0x151 [ 860.492854] [] watchdog+0x6be/0xa20 [ 860.498117] [] ? watchdog+0x11c/0xa20 [ 860.503575] [] kthread+0x26d/0x300 [ 860.508751] [] ? reset_hung_task_detector+0x20/0x20 [ 860.515416] [] ? kthread_park+0xa0/0xa0 [ 860.521042] [] ? __switch_to_asm+0x34/0x70 [ 860.526914] [] ? kthread_park+0xa0/0xa0 [ 860.532528] [] ? kthread_park+0xa0/0xa0 [ 860.538146] [] ret_from_fork+0x5c/0x70 [ 860.543982] Kernel Offset: disabled [ 860.547612] Rebooting in 86400 seconds..