INIT: Id "5" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "4" respawning too fast: disabled for 5 minutes Warning: Permanently added '10.128.10.11' (ECDSA) to the list of known hosts. 2019/02/14 00:17:48 parsed 1 programs 2019/02/14 00:17:52 executed programs: 0 INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "5" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes INIT: Id "1" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes [ 981.565136] INFO: task syz-executor.0:2215 blocked for more than 140 seconds. [ 981.572483] Not tainted 4.4.174+ #4 [ 981.576677] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 981.584651] syz-executor.0 D ffff8800b51af9d8 26144 2215 1 0x00000004 [ 981.592242] ffff8800b51af9d8 ffff8801d265c740 865e39efccc8628b ffff8801d265c740 [ 981.600315] 0000000000000001 ffff8801d265d000 ffff8801db71f180 ffff8801db71f1a8 [ 981.608468] ffff8801db71e898 ffff8801d65a0000 ffff8801d265c740 ffffed0016a35001 [ 981.616542] Call Trace: [ 981.619278] [] schedule+0x99/0x1d0 [ 981.624459] [] schedule_preempt_disabled+0x13/0x20 [ 981.631169] [] mutex_lock_nested+0x3c2/0xb80 [ 981.637368] [] ? blkdev_reread_part+0x1f/0x40 [ 981.643610] [] ? find_next_bit+0x44/0x50 [ 981.649382] [] ? mutex_trylock+0x500/0x500 [ 981.655402] [] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 981.662704] [] blkdev_reread_part+0x1f/0x40 [ 981.668922] [] loop_reread_partitions+0x7c/0x90 [ 981.675293] [] loop_clr_fd+0x7f1/0xa70 [ 981.680838] [] lo_ioctl+0x7b6/0x1a70 [ 981.686320] [] ? debug_check_no_obj_freed+0x159/0x6e0 [ 981.693170] [] ? loop_queue_work+0x2290/0x2290 [ 981.699473] [] blkdev_ioctl+0xed9/0x1940 [ 981.705225] [] ? blkpg_ioctl+0x900/0x900 [ 981.711031] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 981.718038] [] ? debug_check_no_obj_freed+0x2b9/0x6e0 [ 981.724978] [] ? get_unused_fd_flags+0xd0/0xd0 [ 981.731543] [] ? check_preemption_disabled+0x3c/0x200 [ 981.738466] [] ? check_preemption_disabled+0x3c/0x200 [ 981.745358] [] block_ioctl+0xde/0x120 [ 981.750793] [] ? blkdev_read_iter+0x160/0x160 [ 981.756996] [] do_vfs_ioctl+0x6e7/0xfa0 [ 981.762786] [] ? selinux_parse_skb.constprop.0+0x16b0/0x16b0 [ 981.770257] [] ? ioctl_preallocate+0x200/0x200 [ 981.776485] [] ? do_sys_open+0x237/0x600 [ 981.782172] [] ? filp_open+0x70/0x70 [ 981.787549] [] ? SyS_mkdirat+0x164/0x250 [ 981.793381] [] ? task_work_run+0x251/0x2b0 [ 981.799611] [] ? security_file_ioctl+0x8f/0xc0 [ 981.805917] [] SyS_ioctl+0x8f/0xc0 [ 981.811165] [] entry_SYSCALL_64_fastpath+0x1e/0x9a [ 981.817779] 2 locks held by syz-executor.0/2215: [ 981.822518] #0: (loop_ctl_mutex/1){+.+.+.}, at: [] lo_ioctl+0x85/0x1a70 [ 981.832041] #1: (&bdev->bd_mutex){+.+.+.}, at: [] blkdev_reread_part+0x1f/0x40 [ 981.841790] Sending NMI to all CPUs: [ 981.846147] NMI backtrace for cpu 0 [ 981.849770] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.4.174+ #4 [ 981.856010] task: ffffffff82e151c0 task.stack: ffffffff82e00000 [ 981.862055] RIP: 0010:[] [] native_safe_halt+0x2/0x10 [ 981.870468] RSP: 0018:ffffffff82e07db0 EFLAGS: 00000246 [ 981.875934] RAX: 0000000000000007 RBX: ffffffff8319bf68 RCX: 0000000000000000 [ 981.883183] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff82e15a84 [ 981.890467] RBP: ffffffff82e07de0 R08: 0000000000000000 R09: 0000000000000000 [ 981.897746] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 981.905026] R13: ffffffff82e08000 R14: dffffc0000000000 R15: ffffffff82e00000 [ 981.912288] FS: 0000000000000000(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000 [ 981.920531] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 981.926430] CR2: 0000000000816000 CR3: 00000001d7607000 CR4: 00000000001606b0 [ 981.933676] Stack: [ 981.935837] ffffffff81020b16 ffffffff82e00000 0000000000000000 ffffffff82e08000 [ 981.943357] dffffc0000000000 ffffffff82e00000 ffffffff82e07df0 ffffffff81022d50 [ 981.950904] ffffffff82e07e08 ffffffff811eb4c8 0000000000000000 ffffffff82e07ed0 [ 981.958564] Call Trace: [ 981.961140] [] ? default_idle+0x56/0x3d0 [ 981.966858] [] arch_cpu_idle+0x10/0x20 [ 981.972379] [] default_idle_call+0x48/0x70 [ 981.978266] [] cpu_startup_entry+0x6d1/0x810 [ 981.984309] [] ? complete+0x18/0x70 [ 981.989602] [] ? call_cpuidle+0xe0/0xe0 [ 981.995227] [] ? schedule+0xab/0x1d0 [ 982.000563] [] rest_init+0x190/0x199 [ 982.005937] [] ? trace_event_define_fields_x86_irq_vector+0x2c/0x2c [ 982.013979] [] start_kernel+0x64a/0x67e [ 982.019614] [] ? thread_stack_cache_init+0xb/0xb [ 982.026020] [] ? early_idt_handler_array+0x120/0x120 [ 982.032749] [] ? early_idt_handler_array+0x120/0x120 [ 982.039508] [] x86_64_start_reservations+0x29/0x2b [ 982.046086] [] x86_64_start_kernel+0x137/0x15a [ 982.052295] Code: 2e 0f 1f 84 00 00 00 00 00 fa c3 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 fb c3 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 fb f4 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 f4 c3 0f 1f 40 00 66 [ 982.071316] NMI backtrace for cpu 1 [ 982.074952] CPU: 1 PID: 20 Comm: khungtaskd Not tainted 4.4.174+ #4 [ 982.081353] task: ffff8801da6f4740 task.stack: ffff8800001d0000 [ 982.087440] RIP: 0010:[] [] flat_send_IPI_mask+0xf7/0x1b0 [ 982.096208] RSP: 0018:ffff8800001d7c88 EFLAGS: 00000046 [ 982.101676] RAX: 0000000000000000 RBX: 0000000000000c00 RCX: 0000000000000000 [ 982.108963] RDX: 0000000000000c00 RSI: 0000000000000000 RDI: ffffffffff5fc300 [ 982.116239] RBP: ffff8800001d7cb8 R08: 0000000000000018 R09: 0000000000000000 [ 982.123484] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000246 [ 982.130767] R13: 0000000003000000 R14: ffffffff82e5f2e0 R15: 0000000000000002 [ 982.138040] FS: 0000000000000000(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000 [ 982.146274] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 982.152163] CR2: 00000000011df000 CR3: 00000001d32c3000 CR4: 00000000001606b0 [ 982.159440] Stack: [ 982.161578] 0000000000000001 ffffffff82e5f2e0 ffffffff831a6ac0 fffffbfff0634c34 [ 982.169114] 000000000001b6c0 0000000000000008 ffff8800001d7cd8 ffffffff81092bee [ 982.176649] 0000000000000008 ffffffff82924260 ffff8800001d7d30 ffffffff81ab8252 [ 982.184158] Call Trace: [ 982.186745] [] nmi_raise_cpu_backtrace+0x5e/0x80 [ 982.193157] [] nmi_trigger_all_cpu_backtrace.cold+0xa1/0xae [ 982.200551] [] ? print_lock+0xa8/0xab [ 982.206003] [] ? irq_force_complete_move+0x330/0x330 [ 982.212726] [] arch_trigger_all_cpu_backtrace+0x14/0x20 [ 982.219799] [] watchdog.cold+0xd3/0xee [ 982.225344] [] ? watchdog+0xac/0xa00 [ 982.230690] [] ? reset_hung_task_detector+0x20/0x20 [ 982.237381] [] kthread+0x273/0x310 [ 982.242547] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.249216] [] ? _raw_spin_unlock_irq+0x39/0x60 [ 982.255521] [] ? finish_task_switch+0x1e1/0x660 [ 982.261810] [] ? finish_task_switch+0x1b3/0x660 [ 982.268178] [] ? __schedule+0x7af/0x1ee0 [ 982.273925] [] ? __schedule+0x7a3/0x1ee0 [ 982.279667] [] ? __schedule+0x7af/0x1ee0 [ 982.285379] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.292026] [] ret_from_fork+0x55/0x80 [ 982.297584] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.304242] Code: 00 c3 5f ff 80 e6 10 75 e1 41 c1 e5 18 44 89 2c 25 10 c3 5f ff 44 89 fa 09 da 80 cf 04 41 83 ff 02 0f 44 d3 89 14 25 00 c3 5f ff <41> f7 c4 00 02 00 00 75 1e 4c 89 e7 57 9d 0f 1f 44 00 00 e8 f1 [ 982.323443] Kernel panic - not syncing: hung_task: blocked tasks [ 982.329588] CPU: 1 PID: 20 Comm: khungtaskd Not tainted 4.4.174+ #4 [ 982.335966] 0000000000000000 8cdf408c8495033b ffff8800001d7c60 ffffffff81aad1a1 [ 982.344017] ffff8801d265c740 ffffffff82872120 dffffc0000000000 0000000000000002 [ 982.352008] 00000000003fff98 ffff8800001d7d40 ffffffff813a48c2 0000000041b58ab3 [ 982.360004] Call Trace: [ 982.362569] [] dump_stack+0xc1/0x120 [ 982.367958] [] panic+0x1b9/0x37b [ 982.372951] [] ? add_taint.cold+0x16/0x16 [ 982.378791] [] ? find_next_bit+0x44/0x50 [ 982.384489] [] ? nmi_trigger_all_cpu_backtrace+0x3c6/0x490 [ 982.391742] [] ? nmi_trigger_all_cpu_backtrace+0x3c6/0x490 [ 982.399042] [] watchdog.cold+0xe4/0xee [ 982.404566] [] ? watchdog+0xac/0xa00 [ 982.409907] [] ? reset_hung_task_detector+0x20/0x20 [ 982.416556] [] kthread+0x273/0x310 [ 982.421721] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.428364] [] ? _raw_spin_unlock_irq+0x39/0x60 [ 982.434657] [] ? finish_task_switch+0x1e1/0x660 [ 982.440955] [] ? finish_task_switch+0x1b3/0x660 [ 982.447257] [] ? __schedule+0x7af/0x1ee0 [ 982.453056] [] ? __schedule+0x7a3/0x1ee0 [ 982.458758] [] ? __schedule+0x7af/0x1ee0 [ 982.464509] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.471182] [] ret_from_fork+0x55/0x80 [ 982.476701] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.483712] Kernel Offset: disabled [ 982.487350] Rebooting in 86400 seconds..