INIT: Id "1" 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 INIT: Id "5" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes Warning: Permanently added '10.128.0.80' (ECDSA) to the list of known hosts. 2019/04/29 05:31:49 parsed 1 programs 2019/04/29 05:31:52 executed programs: 0 INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "1" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "5" 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 [ 981.540837] INFO: task syz-executor.2:2211 blocked for more than 140 seconds. [ 981.548134] Not tainted 4.4.174+ #4 [ 981.552307] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 981.560307] syz-executor.2 D ffff8800b24a7a78 25008 2211 1 0x00000004 [ 981.567803] ffff8800b24a7a78 ffff8801d2395f00 1e4037bd75b414f9 ffff8801d2395f00 [ 981.575917] 0000000000000000 ffff8801d2396700 ffff8801db61f180 ffff8801db61f1a8 [ 981.584017] ffff8801db61e898 ffffffff82e151c0 ffff8801d2395f00 ffffed0016494001 [ 981.592236] Call Trace: [ 981.594963] [] schedule+0x99/0x1d0 [ 981.600142] [] schedule_preempt_disabled+0x13/0x20 [ 981.606795] [] mutex_lock_nested+0x3c2/0xb80 [ 981.613070] [] ? lo_ioctl+0x85/0x1a70 [ 981.618683] [] ? avc_has_extended_perms+0x655/0xd30 [ 981.625386] [] ? mutex_trylock+0x500/0x500 [ 981.631289] [] ? avc_ss_reset+0x110/0x110 [ 981.637074] [] lo_ioctl+0x85/0x1a70 [ 981.642492] [] ? debug_check_no_obj_freed+0x159/0x6e0 [ 981.649337] [] ? loop_queue_work+0x2290/0x2290 [ 981.655667] [] blkdev_ioctl+0xed9/0x1940 [ 981.661402] [] ? blkpg_ioctl+0x900/0x900 [ 981.667121] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 981.674085] [] ? debug_check_no_obj_freed+0x2b9/0x6e0 [ 981.681036] [] ? get_unused_fd_flags+0xd0/0xd0 [ 981.687253] [] ? check_preemption_disabled+0x3c/0x200 [ 981.694103] [] ? check_preemption_disabled+0x3c/0x200 [ 981.700978] [] block_ioctl+0xde/0x120 [ 981.706437] [] ? blkdev_read_iter+0x160/0x160 [ 981.712629] [] do_vfs_ioctl+0x6e7/0xfa0 [ 981.718280] [] ? selinux_parse_skb.constprop.0+0x16b0/0x16b0 [ 981.725789] [] ? ioctl_preallocate+0x200/0x200 [ 981.732041] [] ? do_sys_open+0x237/0x600 [ 981.737781] [] ? filp_open+0x70/0x70 [ 981.743171] [] ? SyS_mkdirat+0x164/0x250 [ 981.748963] [] ? task_work_run+0x251/0x2b0 [ 981.754920] [] ? security_file_ioctl+0x8f/0xc0 [ 981.761170] [] SyS_ioctl+0x8f/0xc0 [ 981.766339] [] entry_SYSCALL_64_fastpath+0x1e/0x9a [ 981.772979] 1 lock held by syz-executor.2/2211: [ 981.777643] #0: (loop_ctl_mutex/1){+.+.+.}, at: [] lo_ioctl+0x85/0x1a70 [ 981.787058] Sending NMI to all CPUs: [ 981.791321] NMI backtrace for cpu 0 [ 981.794943] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.4.174+ #4 [ 981.801199] task: ffffffff82e151c0 task.stack: ffffffff82e00000 [ 981.807353] RIP: 0010:[] [] native_safe_halt+0x2/0x10 [ 981.815776] RSP: 0018:ffffffff82e07db0 EFLAGS: 00000246 [ 981.821235] RAX: 0000000000000007 RBX: ffffffff8319bf68 RCX: 0000000000000000 [ 981.828487] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff82e15a84 [ 981.835775] RBP: ffffffff82e07de0 R08: 0000000000000000 R09: 0000000000000000 [ 981.843054] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 981.850316] R13: ffffffff82e08000 R14: dffffc0000000000 R15: ffffffff82e00000 [ 981.857602] FS: 0000000000000000(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000 [ 981.865836] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 981.871772] CR2: 00000000007b06f4 CR3: 00000000b91ed000 CR4: 00000000001606b0 [ 981.879037] Stack: [ 981.881193] ffffffff81020b16 ffffffff82e00000 0000000000000000 ffffffff82e08000 [ 981.888718] dffffc0000000000 ffffffff82e00000 ffffffff82e07df0 ffffffff81022d50 [ 981.896260] ffffffff82e07e08 ffffffff811eb4c8 0000000000000000 ffffffff82e07ed0 [ 981.903805] Call Trace: [ 981.906364] [] ? default_idle+0x56/0x3d0 [ 981.912141] [] arch_cpu_idle+0x10/0x20 [ 981.917670] [] default_idle_call+0x48/0x70 [ 981.923564] [] cpu_startup_entry+0x6d1/0x810 [ 981.929648] [] ? complete+0x18/0x70 [ 981.934948] [] ? call_cpuidle+0xe0/0xe0 [ 981.940561] [] ? schedule+0xab/0x1d0 [ 981.945926] [] rest_init+0x190/0x199 [ 981.951301] [] ? trace_event_define_fields_x86_irq_vector+0x2c/0x2c [ 981.959336] [] start_kernel+0x64a/0x67e [ 981.964960] [] ? thread_stack_cache_init+0xb/0xb [ 981.971384] [] ? early_idt_handler_array+0x120/0x120 [ 981.978228] [] ? early_idt_handler_array+0x120/0x120 [ 981.984997] [] x86_64_start_reservations+0x29/0x2b [ 981.991586] [] x86_64_start_kernel+0x137/0x15a [ 981.997801] 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 [ 982.016815] NMI backtrace for cpu 1 [ 982.020434] CPU: 1 PID: 20 Comm: khungtaskd Not tainted 4.4.174+ #4 [ 982.026854] task: ffff8801da6c4740 task.stack: ffff8801d9ef0000 [ 982.032918] RIP: 0010:[] [] flat_send_IPI_mask+0xf7/0x1b0 [ 982.041694] RSP: 0018:ffff8801d9ef7c88 EFLAGS: 00000046 [ 982.047136] RAX: 0000000000000000 RBX: 0000000000000c00 RCX: 0000000000000000 [ 982.054415] RDX: 0000000000000c00 RSI: 0000000000000000 RDI: ffffffffff5fc300 [ 982.061705] RBP: ffff8801d9ef7cb8 R08: 0000000000000018 R09: 0000000000000000 [ 982.068962] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000246 [ 982.076252] R13: 0000000003000000 R14: ffffffff82e5f2e0 R15: 0000000000000002 [ 982.083532] FS: 0000000000000000(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000 [ 982.091827] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 982.097705] CR2: 000000000150e000 CR3: 00000001d22ab000 CR4: 00000000001606b0 [ 982.104982] Stack: [ 982.107120] 0000000000000001 ffffffff82e5f2e0 ffffffff831a6ac0 fffffbfff0634c34 [ 982.114673] 000000000001b6c0 0000000000000008 ffff8801d9ef7cd8 ffffffff81092bee [ 982.122223] 0000000000000008 ffffffff82924260 ffff8801d9ef7d30 ffffffff81ab8252 [ 982.129736] Call Trace: [ 982.132339] [] nmi_raise_cpu_backtrace+0x5e/0x80 [ 982.138737] [] nmi_trigger_all_cpu_backtrace.cold+0xa1/0xae [ 982.146104] [] ? print_lock+0xa8/0xab [ 982.151562] [] ? irq_force_complete_move+0x330/0x330 [ 982.158287] [] arch_trigger_all_cpu_backtrace+0x14/0x20 [ 982.165310] [] watchdog.cold+0xd3/0xee [ 982.170854] [] ? watchdog+0xac/0xa00 [ 982.176193] [] ? reset_hung_task_detector+0x20/0x20 [ 982.182878] [] kthread+0x273/0x310 [ 982.188069] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.194744] [] ? _raw_spin_unlock_irq+0x39/0x60 [ 982.201121] [] ? finish_task_switch+0x1e1/0x660 [ 982.207419] [] ? finish_task_switch+0x1b3/0x660 [ 982.213744] [] ? __schedule+0x7af/0x1ee0 [ 982.219502] [] ? __schedule+0x7a3/0x1ee0 [ 982.225238] [] ? __schedule+0x7af/0x1ee0 [ 982.230968] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.237623] [] ret_from_fork+0x55/0x80 [ 982.243168] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.249825] 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 [ 982.268987] Kernel panic - not syncing: hung_task: blocked tasks [ 982.275131] CPU: 1 PID: 20 Comm: khungtaskd Not tainted 4.4.174+ #4 [ 982.281512] 0000000000000000 daed4d2e2b0c4cc8 ffff8801d9ef7c60 ffffffff81aad1a1 [ 982.289514] ffff8801d2395f00 ffffffff82872120 dffffc0000000000 0000000000000002 [ 982.297509] 00000000003fff9f ffff8801d9ef7d40 ffffffff813a48c2 0000000041b58ab3 [ 982.305499] Call Trace: [ 982.308112] [] dump_stack+0xc1/0x120 [ 982.313513] [] panic+0x1b9/0x37b [ 982.318510] [] ? add_taint.cold+0x16/0x16 [ 982.324281] [] ? nmi_trigger_all_cpu_backtrace+0x3e1/0x490 [ 982.331542] [] ? nmi_trigger_all_cpu_backtrace+0x3c6/0x490 [ 982.338799] [] ? nmi_trigger_all_cpu_backtrace+0x3c6/0x490 [ 982.346051] [] watchdog.cold+0xe4/0xee [ 982.351581] [] ? watchdog+0xac/0xa00 [ 982.356923] [] ? reset_hung_task_detector+0x20/0x20 [ 982.363568] [] kthread+0x273/0x310 [ 982.368778] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.375431] [] ? _raw_spin_unlock_irq+0x39/0x60 [ 982.381724] [] ? finish_task_switch+0x1e1/0x660 [ 982.388032] [] ? finish_task_switch+0x1b3/0x660 [ 982.394391] [] ? __schedule+0x7af/0x1ee0 [ 982.400087] [] ? __schedule+0x7a3/0x1ee0 [ 982.405779] [] ? __schedule+0x7af/0x1ee0 [ 982.411469] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.418113] [] ret_from_fork+0x55/0x80 [ 982.423633] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.430653] Kernel Offset: disabled [ 982.434284] Rebooting in 86400 seconds..