INIT: Id "5" 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 "1" respawning too fast: disabled for 5 minutes INIT: Id "4" respawning too fast: disabled for 5 minutes Warning: Permanently added '10.128.0.2' (ECDSA) to the list of known hosts. 2019/02/13 05:06:03 parsed 1 programs 2019/02/13 05:06:06 executed programs: 0 INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "1" 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 "5" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes [ 981.966416] INFO: task syz-executor.0:2196 blocked for more than 140 seconds. [ 981.973716] Not tainted 4.4.174+ #4 [ 981.977913] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 981.986086] syz-executor.0 D ffff8800b60df648 25408 2196 1 0x00000004 [ 981.993601] ffff8800b60df648 ffff8800b56e0000 f7ab62caf3163329 ffff8800b56e0000 [ 982.001667] 0000000000000001 ffff8800b56e0800 ffff8801db61f180 ffff8801db61f1a8 [ 982.009828] ffff8801db61e898 ffff8800b8f90000 ffff8800b56e0000 ffffed0016c1b001 [ 982.017916] Call Trace: [ 982.020694] [] schedule+0x99/0x1d0 [ 982.025865] [] schedule_preempt_disabled+0x13/0x20 [ 982.032496] [] mutex_lock_nested+0x3c2/0xb80 [ 982.038782] [] ? lo_open+0x1d/0xb0 [ 982.044067] [] ? mutex_lock_nested+0x645/0xb80 [ 982.050445] [] ? __blkdev_get+0x10c/0xdf0 [ 982.056271] [] ? mutex_trylock+0x500/0x500 [ 982.062496] [] ? loop_unregister_transfer+0x90/0x90 [ 982.069195] [] lo_open+0x1d/0xb0 [ 982.074203] [] __blkdev_get+0x8b1/0xdf0 [ 982.079973] [] ? __blkdev_put+0x840/0x840 [ 982.085860] [] ? trace_hardirqs_on+0x10/0x10 [ 982.091946] [] blkdev_get+0x2e8/0x920 [ 982.098573] [] ? bd_may_claim+0xd0/0xd0 [ 982.104186] [] ? bd_acquire+0x8a/0x370 [ 982.109815] [] ? _raw_spin_unlock+0x2d/0x50 [ 982.115873] [] blkdev_open+0x1aa/0x250 [ 982.121548] [] do_dentry_open+0x38f/0xbd0 [ 982.127572] [] ? __inode_permission2+0x9e/0x250 [ 982.133878] [] ? blkdev_get_by_dev+0x80/0x80 [ 982.139971] [] vfs_open+0x10b/0x210 [ 982.145298] [] ? may_open.isra.0+0xe7/0x210 [ 982.151320] [] path_openat+0x136f/0x4470 [ 982.157096] [] ? kasan_kmalloc.part.0+0xc6/0xf0 [ 982.163411] [] ? may_open.isra.0+0x210/0x210 [ 982.169551] [] ? trace_hardirqs_on+0x10/0x10 [ 982.175618] [] do_filp_open+0x1a1/0x270 [ 982.181267] [] ? trace_hardirqs_on+0x10/0x10 [ 982.187453] [] ? user_path_mountpoint_at+0x50/0x50 [ 982.194038] [] ? __alloc_fd+0x1ea/0x490 [ 982.199707] [] ? _raw_spin_unlock+0x2d/0x50 [ 982.205673] [] do_sys_open+0x2f8/0x600 [ 982.211420] [] ? mntput+0x66/0x90 [ 982.216653] [] ? filp_open+0x70/0x70 [ 982.222008] [] ? SyS_mkdirat+0x164/0x250 [ 982.227952] [] ? task_work_run+0x251/0x2b0 [ 982.233842] [] ? SyS_mknod+0x40/0x40 [ 982.239371] [] ? int_ret_from_sys_call+0x52/0xa3 [ 982.245778] [] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 982.252663] [] SyS_open+0x2d/0x40 [ 982.257818] [] entry_SYSCALL_64_fastpath+0x1e/0x9a [ 982.264390] 2 locks held by syz-executor.0/2196: [ 982.269151] #0: (&bdev->bd_mutex){+.+.+.}, at: [] __blkdev_get+0x10c/0xdf0 [ 982.278636] #1: (loop_index_mutex){+.+.+.}, at: [] lo_open+0x1d/0xb0 [ 982.287683] Sending NMI to all CPUs: [ 982.291910] NMI backtrace for cpu 0 [ 982.295525] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.4.174+ #4 [ 982.301782] task: ffffffff82e151c0 task.stack: ffffffff82e00000 [ 982.307844] RIP: 0010:[] [] native_safe_halt+0x2/0x10 [ 982.316247] RSP: 0018:ffffffff82e07db0 EFLAGS: 00000246 [ 982.321676] RAX: 0000000000000007 RBX: ffffffff8319bf68 RCX: 0000000000000000 [ 982.328954] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff82e15a84 [ 982.336351] RBP: ffffffff82e07de0 R08: 0000000000000000 R09: 0000000000000000 [ 982.343601] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 982.350899] R13: ffffffff82e08000 R14: dffffc0000000000 R15: ffffffff82e00000 [ 982.358179] FS: 0000000000000000(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000 [ 982.366737] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 982.372624] CR2: 00007f496aac0000 CR3: 00000001d7679000 CR4: 00000000001606b0 [ 982.380060] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 982.387404] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 982.394662] Stack: [ 982.396927] ffffffff81020b16 ffffffff82e00000 0000000000000000 ffffffff82e08000 [ 982.405321] dffffc0000000000 ffffffff82e00000 ffffffff82e07df0 ffffffff81022d50 [ 982.412922] ffffffff82e07e08 ffffffff811eb4c8 0000000000000000 ffffffff82e07ed0 [ 982.420465] Call Trace: [ 982.423025] [] ? default_idle+0x56/0x3d0 [ 982.428742] [] arch_cpu_idle+0x10/0x20 [ 982.434262] [] default_idle_call+0x48/0x70 [ 982.440156] [] cpu_startup_entry+0x6d1/0x810 [ 982.446218] [] ? complete+0x18/0x70 [ 982.451471] [] ? call_cpuidle+0xe0/0xe0 [ 982.457210] [] ? schedule+0xab/0x1d0 [ 982.462624] [] rest_init+0x190/0x199 [ 982.468035] [] ? trace_event_define_fields_x86_irq_vector+0x2c/0x2c [ 982.476147] [] start_kernel+0x64a/0x67e [ 982.481858] [] ? thread_stack_cache_init+0xb/0xb [ 982.488284] [] ? early_idt_handler_array+0x120/0x120 [ 982.495104] [] ? early_idt_handler_array+0x120/0x120 [ 982.501948] [] x86_64_start_reservations+0x29/0x2b [ 982.508541] [] x86_64_start_kernel+0x137/0x15a [ 982.514796] 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 [ 982.533826] NMI backtrace for cpu 1 [ 982.537462] CPU: 1 PID: 20 Comm: khungtaskd Not tainted 4.4.174+ #4 [ 982.543847] task: ffff8801da6f2f80 task.stack: ffff8801d9ed8000 [ 982.549915] RIP: 0010:[] [] flat_send_IPI_mask+0xf7/0x1b0 [ 982.558664] RSP: 0018:ffff8801d9edfc88 EFLAGS: 00000046 [ 982.564088] RAX: 0000000000000000 RBX: 0000000000000c00 RCX: 0000000000000000 [ 982.571363] RDX: 0000000000000c00 RSI: 0000000000000000 RDI: ffffffffff5fc300 [ 982.578636] RBP: ffff8801d9edfcb8 R08: 0000000000000018 R09: 0000000000000000 [ 982.585884] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000246 [ 982.593159] R13: 0000000003000000 R14: ffffffff82e5f2e0 R15: 0000000000000002 [ 982.600441] FS: 0000000000000000(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000 [ 982.608716] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 982.614588] CR2: 00007f98de4f1000 CR3: 00000000b7439000 CR4: 00000000001606b0 [ 982.621878] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 982.629172] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 982.636446] Stack: [ 982.638576] 0000000000000001 ffffffff82e5f2e0 ffffffff831a6ac0 fffffbfff0634c34 [ 982.646083] 000000000001b6c0 0000000000000008 ffff8801d9edfcd8 ffffffff81092bee [ 982.653627] 0000000000000008 ffffffff82924260 ffff8801d9edfd30 ffffffff81ab8252 [ 982.661555] Call Trace: [ 982.664125] [] nmi_raise_cpu_backtrace+0x5e/0x80 [ 982.670683] [] nmi_trigger_all_cpu_backtrace.cold+0xa1/0xae [ 982.678147] [] ? print_lock+0xa8/0xab [ 982.683648] [] ? irq_force_complete_move+0x330/0x330 [ 982.690446] [] arch_trigger_all_cpu_backtrace+0x14/0x20 [ 982.697490] [] watchdog.cold+0xd3/0xee [ 982.703087] [] ? watchdog+0xac/0xa00 [ 982.708504] [] ? reset_hung_task_detector+0x20/0x20 [ 982.715157] [] kthread+0x273/0x310 [ 982.720384] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.727086] [] ? _raw_spin_unlock_irq+0x39/0x60 [ 982.733417] [] ? finish_task_switch+0x1e1/0x660 [ 982.739752] [] ? finish_task_switch+0x1b3/0x660 [ 982.746055] [] ? __schedule+0x7af/0x1ee0 [ 982.751772] [] ? __schedule+0x7a3/0x1ee0 [ 982.757506] [] ? __schedule+0x7af/0x1ee0 [ 982.763201] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.769866] [] ret_from_fork+0x55/0x80 [ 982.775385] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.782057] 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 [ 982.801421] Kernel panic - not syncing: hung_task: blocked tasks [ 982.807658] CPU: 0 PID: 20 Comm: khungtaskd Not tainted 4.4.174+ #4 [ 982.814158] 0000000000000000 3b2b9df32f210c3c ffff8801d9edfc60 ffffffff81aad1a1 [ 982.822273] ffff8800b56e0000 ffffffff82872120 dffffc0000000000 0000000000000002 [ 982.830281] 00000000003fff9d ffff8801d9edfd40 ffffffff813a48c2 0000000041b58ab3 [ 982.838430] Call Trace: [ 982.841004] [] dump_stack+0xc1/0x120 [ 982.846728] [] panic+0x1b9/0x37b [ 982.851923] [] ? add_taint.cold+0x16/0x16 [ 982.857934] [] ? nmi_trigger_all_cpu_backtrace+0x3e1/0x490 [ 982.865282] [] ? nmi_trigger_all_cpu_backtrace+0x3c6/0x490 [ 982.872551] [] ? nmi_trigger_all_cpu_backtrace+0x3c6/0x490 [ 982.879886] [] watchdog.cold+0xe4/0xee [ 982.885456] [] ? watchdog+0xac/0xa00 [ 982.890812] [] ? reset_hung_task_detector+0x20/0x20 [ 982.897467] [] kthread+0x273/0x310 [ 982.902637] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.909283] [] ? _raw_spin_unlock_irq+0x39/0x60 [ 982.915577] [] ? finish_task_switch+0x1e1/0x660 [ 982.921869] [] ? finish_task_switch+0x1b3/0x660 [ 982.928164] [] ? __schedule+0x7af/0x1ee0 [ 982.933847] [] ? __schedule+0x7a3/0x1ee0 [ 982.939530] [] ? __schedule+0x7af/0x1ee0 [ 982.945322] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.951972] [] ret_from_fork+0x55/0x80 [ 982.957489] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.964718] Kernel Offset: disabled [ 982.968375] Rebooting in 86400 seconds..