INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "5" 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 "6" respawning too fast: disabled for 5 minutes Warning: Permanently added '10.128.0.79' (ECDSA) to the list of known hosts. 2019/02/13 07:36:49 parsed 1 programs 2019/02/13 07:36:52 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 "3" 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 [ 981.606892] INFO: task syz-executor.4:2198 blocked for more than 140 seconds. [ 981.614200] Not tainted 4.4.174+ #17 [ 981.618449] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 981.626526] syz-executor.4 D ffff8801d2bc7aa8 24784 2198 1 0x20020004 [ 981.634097] ffff8801d2bc7aa8 ffff8801d22217c0 ee43464e3eb3a36f ffff8801d22217c0 [ 981.642133] 0000000000000002 ffff8801d2222000 ffff8801db61f180 ffff8801db61f1a8 [ 981.650200] ffff8801db61e898 ffff8801d2dd4740 ffff8801d22217c0 ffffed003a578001 [ 981.658226] Call Trace: [ 981.660788] [] schedule+0x99/0x1d0 [ 981.665958] [] schedule_preempt_disabled+0x13/0x20 [ 981.672538] [] mutex_lock_nested+0x3c2/0xb80 [ 981.678587] [] ? lo_release+0x84/0x1b0 [ 981.684099] [] ? mutex_lock_nested+0x645/0xb80 [ 981.690332] [] ? __blkdev_put+0xbb/0x840 [ 981.696020] [] ? mutex_trylock+0x500/0x500 [ 981.701932] [] ? __blkdev_put+0x219/0x840 [ 981.707722] [] ? __blkdev_put+0x3c2/0x840 [ 981.713500] [] ? lo_compat_ioctl+0x140/0x140 [ 981.719600] [] lo_release+0x84/0x1b0 [ 981.724940] [] ? lo_compat_ioctl+0x140/0x140 [ 981.731002] [] __blkdev_put+0x461/0x840 [ 981.736603] [] ? __mutex_unlock_slowpath+0x25d/0x530 [ 981.743358] [] ? bd_unlink_disk_holder+0x450/0x450 [ 981.749926] [] blkdev_put+0x88/0x560 [ 981.755262] [] ? blkdev_put+0x560/0x560 [ 981.761149] [] blkdev_close+0x8b/0xb0 [ 981.766582] [] __fput+0x246/0x710 [ 981.771726] [] ____fput+0x16/0x20 [ 981.776825] [] task_work_run+0x202/0x2b0 [ 981.782520] [] exit_to_usermode_loop+0x14a/0x170 [ 981.789008] [] do_fast_syscall_32+0x7a9/0xa90 [ 981.795140] [] sysenter_flags_fixed+0xd/0x1a [ 981.801210] 3 locks held by syz-executor.4/2198: [ 981.805953] #0: (&bdev->bd_mutex){+.+.+.}, at: [] __blkdev_put+0xbb/0x840 [ 981.815241] #1: (loop_index_mutex){+.+.+.}, at: [] lo_release+0x1e/0x1b0 [ 981.824465] #2: (loop_ctl_mutex#2){+.+.+.}, at: [] lo_release+0x84/0x1b0 [ 981.833800] Sending NMI to all CPUs: [ 981.838700] NMI backtrace for cpu 0 [ 981.842332] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.4.174+ #17 [ 981.848711] task: ffffffff82e151c0 task.stack: ffffffff82e00000 [ 981.854750] RIP: 0010:[] [] native_safe_halt+0x2/0x10 [ 981.863168] RSP: 0018:ffffffff82e07db0 EFLAGS: 00000246 [ 981.868626] RAX: 0000000000000007 RBX: ffffffff8319bf68 RCX: 0000000000000000 [ 981.875889] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff82e15a84 [ 981.883164] RBP: ffffffff82e07de0 R08: 0000000000000000 R09: 0000000000000000 [ 981.890428] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 981.897697] R13: ffffffff82e08000 R14: dffffc0000000000 R15: ffffffff82e00000 [ 981.904944] FS: 0000000000000000(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000 [ 981.913165] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 981.919067] CR2: 00000000021f53e0 CR3: 00000001d72f2000 CR4: 00000000001606b0 [ 981.926311] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 981.933575] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 981.940852] Stack: [ 981.942982] ffffffff81020b16 ffffffff82e00000 0000000000000000 ffffffff82e08000 [ 981.950527] dffffc0000000000 ffffffff82e00000 ffffffff82e07df0 ffffffff81022d50 [ 981.958047] ffffffff82e07e08 ffffffff811eb4c8 0000000000000000 ffffffff82e07ed0 [ 981.965563] Call Trace: [ 981.968153] [] ? default_idle+0x56/0x3d0 [ 981.973834] [] arch_cpu_idle+0x10/0x20 [ 981.979382] [] default_idle_call+0x48/0x70 [ 981.985238] [] cpu_startup_entry+0x6d1/0x810 [ 981.991291] [] ? complete+0x18/0x70 [ 981.996538] [] ? call_cpuidle+0xe0/0xe0 [ 982.002159] [] ? schedule+0xab/0x1d0 [ 982.007508] [] rest_init+0x190/0x199 [ 982.012880] [] ? trace_event_define_fields_x86_irq_vector+0x2c/0x2c [ 982.021025] [] start_kernel+0x64a/0x67e [ 982.026629] [] ? thread_stack_cache_init+0xb/0xb [ 982.033038] [] ? early_idt_handler_array+0x120/0x120 [ 982.039775] [] ? early_idt_handler_array+0x120/0x120 [ 982.046502] [] x86_64_start_reservations+0x29/0x2b [ 982.053835] [] x86_64_start_kernel+0x137/0x15a [ 982.060186] 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 [ 982.079309] NMI backtrace for cpu 1 [ 982.082920] CPU: 1 PID: 20 Comm: khungtaskd Not tainted 4.4.174+ #17 [ 982.089541] task: ffff8801da6c2f80 task.stack: ffff8800001e8000 [ 982.095601] RIP: 0010:[] [] flat_send_IPI_mask+0xf7/0x1b0 [ 982.104344] RSP: 0018:ffff8800001efc88 EFLAGS: 00000046 [ 982.109783] RAX: 0000000000000000 RBX: 0000000000000c00 RCX: 0000000000000000 [ 982.117067] RDX: 0000000000000c00 RSI: 0000000000000000 RDI: ffffffffff5fc300 [ 982.124326] RBP: ffff8800001efcb8 R08: 0000000000000018 R09: 0000000000000000 [ 982.131613] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000246 [ 982.138922] R13: 0000000003000000 R14: ffffffff82e5f2e0 R15: 0000000000000002 [ 982.146209] FS: 0000000000000000(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000 [ 982.154481] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 982.160384] CR2: 00007ffdb5de3fd8 CR3: 00000001d72f2000 CR4: 00000000001606b0 [ 982.167662] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 982.174912] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 982.182225] Stack: [ 982.184476] 0000000000000001 ffffffff82e5f2e0 ffffffff831a6ac0 fffffbfff0634c34 [ 982.192013] 000000000001b6c0 0000000000000008 ffff8800001efcd8 ffffffff81092bee [ 982.199540] 0000000000000008 ffffffff82924260 ffff8800001efd30 ffffffff81ab8252 [ 982.207070] Call Trace: [ 982.209628] [] nmi_raise_cpu_backtrace+0x5e/0x80 [ 982.216213] [] nmi_trigger_all_cpu_backtrace.cold+0xa1/0xae [ 982.223580] [] ? print_lock+0xa8/0xab [ 982.229115] [] ? irq_force_complete_move+0x330/0x330 [ 982.235841] [] arch_trigger_all_cpu_backtrace+0x14/0x20 [ 982.242878] [] watchdog.cold+0xd3/0xee [ 982.248408] [] ? watchdog+0xac/0xa00 [ 982.253755] [] ? reset_hung_task_detector+0x20/0x20 [ 982.260517] [] kthread+0x273/0x310 [ 982.265689] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.272390] [] ? _raw_spin_unlock_irq+0x39/0x60 [ 982.278731] [] ? finish_task_switch+0x1e1/0x660 [ 982.285038] [] ? finish_task_switch+0x1b3/0x660 [ 982.291366] [] ? __schedule+0x7af/0x1ee0 [ 982.297392] [] ? __schedule+0x7a3/0x1ee0 [ 982.303076] [] ? __schedule+0x7af/0x1ee0 [ 982.308789] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.315539] [] ret_from_fork+0x55/0x80 [ 982.321079] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.327739] 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 [ 982.346971] Kernel panic - not syncing: hung_task: blocked tasks [ 982.353215] CPU: 1 PID: 20 Comm: khungtaskd Not tainted 4.4.174+ #17 [ 982.359678] 0000000000000000 0a000a581792d245 ffff8800001efc60 ffffffff81aad1a1 [ 982.367678] ffff8801d22217c0 ffffffff82872120 dffffc0000000000 0000000000000003 [ 982.375756] 00000000003fff9b ffff8800001efd40 ffffffff813a48c2 0000000041b58ab3 [ 982.383742] Call Trace: [ 982.386307] [] dump_stack+0xc1/0x120 [ 982.391662] [] panic+0x1b9/0x37b [ 982.396762] [] ? add_taint.cold+0x16/0x16 [ 982.402652] [] ? find_next_bit+0x44/0x50 [ 982.408345] [] ? nmi_trigger_all_cpu_backtrace+0x3c6/0x490 [ 982.415593] [] ? nmi_trigger_all_cpu_backtrace+0x3c6/0x490 [ 982.422845] [] watchdog.cold+0xe4/0xee [ 982.428367] [] ? watchdog+0xac/0xa00 [ 982.433924] [] ? reset_hung_task_detector+0x20/0x20 [ 982.440681] [] kthread+0x273/0x310 [ 982.445853] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.452505] [] ? _raw_spin_unlock_irq+0x39/0x60 [ 982.458816] [] ? finish_task_switch+0x1e1/0x660 [ 982.465222] [] ? finish_task_switch+0x1b3/0x660 [ 982.471614] [] ? __schedule+0x7af/0x1ee0 [ 982.477358] [] ? __schedule+0x7a3/0x1ee0 [ 982.483050] [] ? __schedule+0x7af/0x1ee0 [ 982.488842] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.495766] [] ret_from_fork+0x55/0x80 [ 982.501477] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.508460] Kernel Offset: disabled [ 982.512080] Rebooting in 86400 seconds..