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 Warning: Permanently added '10.128.10.17' (ECDSA) to the list of known hosts. 2019/02/13 09:27:24 parsed 1 programs 2019/02/13 09:27:27 executed programs: 0 INIT: Id "1" respawning too fast: disabled for 5 minutes INIT: Id "5" respawning too fast: disabled for 5 minutes INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes [ 981.532753] INFO: task syz-executor.0:2215 blocked for more than 140 seconds. [ 981.540138] Not tainted 4.4.174+ #4 [ 981.544393] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 981.552371] syz-executor.0 D ffff8800b52af9d8 25576 2215 1 0x00000004 [ 981.559884] ffff8800b52af9d8 ffff8800b517df00 9c09b3657eb08ad9 ffff8800b517df00 [ 981.567951] 0000000000000001 ffff8800b517e700 ffff8801db61f180 ffff8801db61f1a8 [ 981.576089] ffff8801db61e898 ffff8801d69b97c0 ffff8800b517df00 ffffed0016a55001 [ 981.584200] Call Trace: [ 981.586955] [] schedule+0x99/0x1d0 [ 981.592138] [] schedule_preempt_disabled+0x13/0x20 [ 981.598857] [] mutex_lock_nested+0x3c2/0xb80 [ 981.605137] [] ? blkdev_reread_part+0x1f/0x40 [ 981.611351] [] ? find_next_bit+0x44/0x50 [ 981.617134] [] ? mutex_trylock+0x500/0x500 [ 981.623183] [] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 981.630029] [] blkdev_reread_part+0x1f/0x40 [ 981.636202] [] loop_reread_partitions+0x7c/0x90 [ 981.642549] [] loop_clr_fd+0x7f1/0xa70 [ 981.648085] [] lo_ioctl+0x7b6/0x1a70 [ 981.653584] [] ? debug_check_no_obj_freed+0x159/0x6e0 [ 981.660437] [] ? loop_queue_work+0x2290/0x2290 [ 981.666747] [] blkdev_ioctl+0xed9/0x1940 [ 981.672533] [] ? blkpg_ioctl+0x900/0x900 [ 981.678288] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 981.685276] [] ? debug_check_no_obj_freed+0x2b9/0x6e0 [ 981.692271] [] ? get_unused_fd_flags+0xd0/0xd0 [ 981.698582] [] ? check_preemption_disabled+0x3c/0x200 [ 981.705443] [] ? check_preemption_disabled+0x3c/0x200 [ 981.712463] [] block_ioctl+0xde/0x120 [ 981.717991] [] ? blkdev_read_iter+0x160/0x160 [ 981.724192] [] do_vfs_ioctl+0x6e7/0xfa0 [ 981.729955] [] ? selinux_parse_skb.constprop.0+0x16b0/0x16b0 [ 981.737488] [] ? ioctl_preallocate+0x200/0x200 [ 981.743737] [] ? do_sys_open+0x237/0x600 [ 981.749429] [] ? filp_open+0x70/0x70 [ 981.754873] [] ? SyS_mkdirat+0x164/0x250 [ 981.760753] [] ? security_file_ioctl+0x8f/0xc0 [ 981.767116] [] SyS_ioctl+0x8f/0xc0 [ 981.772311] [] entry_SYSCALL_64_fastpath+0x1e/0x9a [ 981.778942] 2 locks held by syz-executor.0/2215: [ 981.783715] #0: (loop_ctl_mutex/1){+.+.+.}, at: [] lo_ioctl+0x85/0x1a70 [ 981.793107] #1: (&bdev->bd_mutex){+.+.+.}, at: [] blkdev_reread_part+0x1f/0x40 [ 981.802891] Sending NMI to all CPUs: [ 981.807190] NMI backtrace for cpu 0 [ 981.810804] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.4.174+ #4 [ 981.817207] task: ffffffff82e151c0 task.stack: ffffffff82e00000 [ 981.823281] RIP: 0010:[] [] native_safe_halt+0x2/0x10 [ 981.831659] RSP: 0018:ffffffff82e07db0 EFLAGS: 00000246 [ 981.837124] RAX: 0000000000000007 RBX: ffffffff8319bf68 RCX: 0000000000000000 [ 981.844427] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff82e15a84 [ 981.851681] RBP: ffffffff82e07de0 R08: 0000000000000000 R09: 0000000000000000 [ 981.859050] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 981.866371] R13: ffffffff82e08000 R14: dffffc0000000000 R15: ffffffff82e00000 [ 981.873663] FS: 0000000000000000(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000 [ 981.881879] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 981.887807] CR2: 0000000000d47000 CR3: 00000000b968c000 CR4: 00000000001606b0 [ 981.895146] Stack: [ 981.897288] ffffffff81020b16 ffffffff82e00000 0000000000000000 ffffffff82e08000 [ 981.904832] dffffc0000000000 ffffffff82e00000 ffffffff82e07df0 ffffffff81022d50 [ 981.912513] ffffffff82e07e08 ffffffff811eb4c8 0000000000000000 ffffffff82e07ed0 [ 981.920172] Call Trace: [ 981.922791] [] ? default_idle+0x56/0x3d0 [ 981.928495] [] arch_cpu_idle+0x10/0x20 [ 981.934092] [] default_idle_call+0x48/0x70 [ 981.939983] [] cpu_startup_entry+0x6d1/0x810 [ 981.946054] [] ? complete+0x18/0x70 [ 981.951323] [] ? call_cpuidle+0xe0/0xe0 [ 981.956966] [] ? schedule+0xab/0x1d0 [ 981.962328] [] rest_init+0x190/0x199 [ 981.967703] [] ? trace_event_define_fields_x86_irq_vector+0x2c/0x2c [ 981.975767] [] start_kernel+0x64a/0x67e [ 981.981389] [] ? thread_stack_cache_init+0xb/0xb [ 981.987825] [] ? early_idt_handler_array+0x120/0x120 [ 981.994606] [] ? early_idt_handler_array+0x120/0x120 [ 982.001349] [] x86_64_start_reservations+0x29/0x2b [ 982.008310] [] x86_64_start_kernel+0x137/0x15a [ 982.014552] 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 [ 982.033565] NMI backtrace for cpu 1 [ 982.037179] CPU: 1 PID: 20 Comm: khungtaskd Not tainted 4.4.174+ #4 [ 982.043605] task: ffff8801da6f4740 task.stack: ffff8800001d0000 [ 982.049650] RIP: 0010:[] [] flat_send_IPI_mask+0xf7/0x1b0 [ 982.058425] RSP: 0018:ffff8800001d7c88 EFLAGS: 00000046 [ 982.064037] RAX: 0000000000000000 RBX: 0000000000000c00 RCX: 0000000000000000 [ 982.071286] RDX: 0000000000000c00 RSI: 0000000000000000 RDI: ffffffffff5fc300 [ 982.078568] RBP: ffff8800001d7cb8 R08: 0000000000000018 R09: 0000000000000000 [ 982.085849] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000246 [ 982.093141] R13: 0000000003000000 R14: ffffffff82e5f2e0 R15: 0000000000000002 [ 982.100406] FS: 0000000000000000(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000 [ 982.108647] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 982.114575] CR2: 00000000007831ec CR3: 00000001d6d21000 CR4: 00000000001606b0 [ 982.121932] Stack: [ 982.124094] 0000000000000001 ffffffff82e5f2e0 ffffffff831a6ac0 fffffbfff0634c34 [ 982.131617] 000000000001b6c0 0000000000000008 ffff8800001d7cd8 ffffffff81092bee [ 982.139164] 0000000000000008 ffffffff82924260 ffff8800001d7d30 ffffffff81ab8252 [ 982.146905] Call Trace: [ 982.149466] [] nmi_raise_cpu_backtrace+0x5e/0x80 [ 982.156107] [] nmi_trigger_all_cpu_backtrace.cold+0xa1/0xae [ 982.163587] [] ? print_lock+0xa8/0xab [ 982.169018] [] ? irq_force_complete_move+0x330/0x330 [ 982.175823] [] arch_trigger_all_cpu_backtrace+0x14/0x20 [ 982.182877] [] watchdog.cold+0xd3/0xee [ 982.188404] [] ? watchdog+0xac/0xa00 [ 982.193785] [] ? reset_hung_task_detector+0x20/0x20 [ 982.200441] [] kthread+0x273/0x310 [ 982.205635] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.212286] [] ? _raw_spin_unlock_irq+0x39/0x60 [ 982.218667] [] ? finish_task_switch+0x1e1/0x660 [ 982.225018] [] ? finish_task_switch+0x1b3/0x660 [ 982.231326] [] ? __schedule+0x7af/0x1ee0 [ 982.237075] [] ? __schedule+0x7a3/0x1ee0 [ 982.242814] [] ? __schedule+0x7af/0x1ee0 [ 982.248505] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.255204] [] ret_from_fork+0x55/0x80 [ 982.260733] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.267414] 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 [ 982.286673] Kernel panic - not syncing: hung_task: blocked tasks [ 982.292915] CPU: 1 PID: 20 Comm: khungtaskd Not tainted 4.4.174+ #4 [ 982.299296] 0000000000000000 e9a13bb3f063fb8f ffff8800001d7c60 ffffffff81aad1a1 [ 982.307291] ffff8800b517df00 ffffffff82872120 dffffc0000000000 0000000000000002 [ 982.315290] 00000000003fff9d ffff8800001d7d40 ffffffff813a48c2 0000000041b58ab3 [ 982.323289] Call Trace: [ 982.325915] [] dump_stack+0xc1/0x120 [ 982.331316] [] panic+0x1b9/0x37b [ 982.336316] [] ? add_taint.cold+0x16/0x16 [ 982.342100] [] ? nmi_trigger_all_cpu_backtrace+0x3e1/0x490 [ 982.349360] [] ? nmi_trigger_all_cpu_backtrace+0x3c6/0x490 [ 982.356623] [] ? nmi_trigger_all_cpu_backtrace+0x3c6/0x490 [ 982.363897] [] watchdog.cold+0xe4/0xee [ 982.369421] [] ? watchdog+0xac/0xa00 [ 982.374771] [] ? reset_hung_task_detector+0x20/0x20 [ 982.381421] [] kthread+0x273/0x310 [ 982.386593] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.393283] [] ? _raw_spin_unlock_irq+0x39/0x60 [ 982.399590] [] ? finish_task_switch+0x1e1/0x660 [ 982.405893] [] ? finish_task_switch+0x1b3/0x660 [ 982.412265] [] ? __schedule+0x7af/0x1ee0 [ 982.417966] [] ? __schedule+0x7a3/0x1ee0 [ 982.423664] [] ? __schedule+0x7af/0x1ee0 [ 982.429363] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.436011] [] ret_from_fork+0x55/0x80 [ 982.441542] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.448525] Kernel Offset: disabled [ 982.452988] Rebooting in 86400 seconds..