INIT: Id "1" 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 "5" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes Warning: Permanently added '10.128.0.200' (ECDSA) to the list of known hosts. 2019/03/11 18:38:48 parsed 1 programs 2019/03/11 18:38:51 executed programs: 0 INIT: Id "1" respawning too fast: disabled for 5 minutes INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "6" 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 [ 981.549090] INFO: task syz-executor.5:2213 blocked for more than 140 seconds. [ 981.556491] Not tainted 4.4.174+ #17 [ 981.560769] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 981.568790] syz-executor.5 D ffff8800b4bbf5d8 24944 2213 2209 0x20020000 [ 981.576375] ffff8800b4bbf5d8 ffff8801d224af80 0a27d5dec81ce090 ffff8801d224af80 [ 981.584509] 0000000000000001 ffff8801d224b800 ffff8801db61f180 ffff8801db61f1a8 [ 981.592562] ffff8801db61e898 ffff8801d1855f00 ffff8801d224af80 ffffed0016977001 [ 981.600617] Call Trace: [ 981.603191] [] schedule+0x99/0x1d0 [ 981.608362] [] schedule_preempt_disabled+0x13/0x20 [ 981.615062] [] mutex_lock_nested+0x3c2/0xb80 [ 981.621144] [] ? lo_open+0x1d/0xb0 [ 981.626327] [] ? mutex_lock_nested+0x645/0xb80 [ 981.632595] [] ? __blkdev_get+0x10c/0xdf0 [ 981.638376] [] ? debug_lockdep_rcu_enabled+0x13/0xa0 [ 981.645159] [] ? mutex_trylock+0x500/0x500 [ 981.651053] [] ? disk_get_part+0x158/0x2c0 [ 981.656918] [] ? loop_unregister_transfer+0x90/0x90 [ 981.663620] [] lo_open+0x1d/0xb0 [ 981.668620] [] __blkdev_get+0x2ae/0xdf0 [ 981.674484] [] ? __blkdev_put+0x840/0x840 [ 981.680306] [] ? trace_hardirqs_on+0x10/0x10 [ 981.686347] [] blkdev_get+0x2e8/0x920 [ 981.691846] [] ? bd_may_claim+0xd0/0xd0 [ 981.697458] [] ? bd_acquire+0x8a/0x370 [ 981.703054] [] ? _raw_spin_unlock+0x2d/0x50 [ 981.709034] [] blkdev_open+0x1aa/0x250 [ 981.714629] [] do_dentry_open+0x38f/0xbd0 [ 981.720483] [] ? __inode_permission2+0x9e/0x250 [ 981.726840] [] ? blkdev_get_by_dev+0x80/0x80 [ 981.733051] [] vfs_open+0x10b/0x210 [ 981.738334] [] ? may_open.isra.0+0xe7/0x210 [ 981.744339] [] path_openat+0x136f/0x4470 [ 981.750048] [] ? kasan_kmalloc.part.0+0xc6/0xf0 [ 981.756350] [] ? may_open.isra.0+0x210/0x210 [ 981.762438] [] ? trace_hardirqs_on+0x10/0x10 [ 981.768491] [] do_filp_open+0x1a1/0x270 [ 981.774215] [] ? user_path_mountpoint_at+0x50/0x50 [ 981.780807] [] ? do_dup2+0x3d0/0x3d0 [ 981.786152] [] ? _raw_spin_unlock+0x2d/0x50 [ 981.792156] [] do_sys_open+0x2f8/0x600 [ 981.797681] [] ? mntput+0x66/0x90 [ 981.802795] [] ? filp_open+0x70/0x70 [ 981.808155] [] ? SyS_mkdirat+0x164/0x250 [ 981.813910] [] ? SyS_mknod+0x40/0x40 [ 981.819291] [] compat_SyS_open+0x2a/0x40 [ 981.824993] [] ? compat_SyS_getdents64+0x270/0x270 [ 981.831609] [] do_fast_syscall_32+0x32d/0xa90 [ 981.837753] [] sysenter_flags_fixed+0xd/0x1a [ 981.843864] 2 locks held by syz-executor.5/2213: [ 981.848597] #0: (&bdev->bd_mutex){+.+.+.}, at: [] __blkdev_get+0x10c/0xdf0 [ 981.857981] #1: (loop_index_mutex){+.+.+.}, at: [] lo_open+0x1d/0xb0 [ 981.866922] Sending NMI to all CPUs: [ 981.871837] NMI backtrace for cpu 0 [ 981.875446] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.4.174+ #17 [ 981.881777] task: ffffffff82e151c0 task.stack: ffffffff82e00000 [ 981.887822] RIP: 0010:[] [] native_safe_halt+0x2/0x10 [ 981.896269] RSP: 0018:ffffffff82e07db0 EFLAGS: 00000246 [ 981.901709] RAX: 0000000000000007 RBX: ffffffff8319bf68 RCX: 0000000000000000 [ 981.909001] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff82e15a84 [ 981.916251] RBP: ffffffff82e07de0 R08: 0000000000000000 R09: 0000000000000000 [ 981.923550] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 981.930823] R13: ffffffff82e08000 R14: dffffc0000000000 R15: ffffffff82e00000 [ 981.938072] FS: 0000000000000000(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000 [ 981.946334] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 981.952234] CR2: 0000000000803000 CR3: 00000000b8104000 CR4: 00000000001606b0 [ 981.959530] Stack: [ 981.961660] ffffffff81020b16 ffffffff82e00000 0000000000000000 ffffffff82e08000 [ 981.969212] dffffc0000000000 ffffffff82e00000 ffffffff82e07df0 ffffffff81022d50 [ 981.976724] ffffffff82e07e08 ffffffff811eb4c8 0000000000000000 ffffffff82e07ed0 [ 981.984268] Call Trace: [ 981.986830] [] ? default_idle+0x56/0x3d0 [ 981.992550] [] arch_cpu_idle+0x10/0x20 [ 981.998062] [] default_idle_call+0x48/0x70 [ 982.004041] [] cpu_startup_entry+0x6d1/0x810 [ 982.010106] [] ? complete+0x18/0x70 [ 982.015356] [] ? call_cpuidle+0xe0/0xe0 [ 982.020990] [] ? schedule+0xab/0x1d0 [ 982.026333] [] rest_init+0x190/0x199 [ 982.031778] [] ? trace_event_define_fields_x86_irq_vector+0x2c/0x2c [ 982.039850] [] start_kernel+0x64a/0x67e [ 982.045634] [] ? thread_stack_cache_init+0xb/0xb [ 982.052076] [] ? early_idt_handler_array+0x120/0x120 [ 982.058814] [] ? early_idt_handler_array+0x120/0x120 [ 982.065608] [] x86_64_start_reservations+0x29/0x2b [ 982.072209] [] x86_64_start_kernel+0x137/0x15a [ 982.078479] 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 [ 982.097537] NMI backtrace for cpu 1 [ 982.101163] CPU: 1 PID: 20 Comm: khungtaskd Not tainted 4.4.174+ #17 [ 982.107640] task: ffff8801da6f4740 task.stack: ffff8800001d0000 [ 982.113836] RIP: 0010:[] [] flat_send_IPI_mask+0xf7/0x1b0 [ 982.122608] RSP: 0018:ffff8800001d7c88 EFLAGS: 00000046 [ 982.128036] RAX: 0000000000000000 RBX: 0000000000000c00 RCX: 0000000000000000 [ 982.135337] RDX: 0000000000000c00 RSI: 0000000000000000 RDI: ffffffffff5fc300 [ 982.142633] RBP: ffff8800001d7cb8 R08: 0000000000000018 R09: 0000000000000000 [ 982.149947] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000246 [ 982.157199] R13: 0000000003000000 R14: ffffffff82e5f2e0 R15: 0000000000000002 [ 982.164620] FS: 0000000000000000(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000 [ 982.172850] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 982.178709] CR2: 00007f91016a9000 CR3: 00000001d2593000 CR4: 00000000001606b0 [ 982.186012] Stack: [ 982.188141] 0000000000000001 ffffffff82e5f2e0 ffffffff831a6ac0 fffffbfff0634c34 [ 982.195687] 000000000001b6c0 0000000000000008 ffff8800001d7cd8 ffffffff81092bee [ 982.203234] 0000000000000008 ffffffff82924260 ffff8800001d7d30 ffffffff81ab8252 [ 982.210775] Call Trace: [ 982.213397] [] nmi_raise_cpu_backtrace+0x5e/0x80 [ 982.219839] [] nmi_trigger_all_cpu_backtrace.cold+0xa1/0xae [ 982.227183] [] ? print_lock+0xa8/0xab [ 982.232717] [] ? irq_force_complete_move+0x330/0x330 [ 982.239484] [] arch_trigger_all_cpu_backtrace+0x14/0x20 [ 982.246473] [] watchdog.cold+0xd3/0xee [ 982.252103] [] ? watchdog+0xac/0xa00 [ 982.257451] [] ? reset_hung_task_detector+0x20/0x20 [ 982.264145] [] kthread+0x273/0x310 [ 982.269357] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.275999] [] ? _raw_spin_unlock_irq+0x39/0x60 [ 982.282333] [] ? finish_task_switch+0x1e1/0x660 [ 982.288626] [] ? finish_task_switch+0x1b3/0x660 [ 982.294947] [] ? __schedule+0x7af/0x1ee0 [ 982.300653] [] ? __schedule+0x7a3/0x1ee0 [ 982.306337] [] ? __schedule+0x7af/0x1ee0 [ 982.312082] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.318776] [] ret_from_fork+0x55/0x80 [ 982.324415] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.331096] 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 [ 982.350330] Kernel panic - not syncing: hung_task: blocked tasks [ 982.356473] CPU: 1 PID: 20 Comm: khungtaskd Not tainted 4.4.174+ #17 [ 982.362948] 0000000000000000 9fcc5b21a34e8046 ffff8800001d7c60 ffffffff81aad1a1 [ 982.371092] ffff8801d224af80 ffffffff82872120 dffffc0000000000 0000000000000003 [ 982.379201] 00000000003fff9c ffff8800001d7d40 ffffffff813a48c2 0000000041b58ab3 [ 982.387281] Call Trace: [ 982.389852] [] dump_stack+0xc1/0x120 [ 982.395259] [] panic+0x1b9/0x37b [ 982.400282] [] ? add_taint.cold+0x16/0x16 [ 982.406060] [] ? nmi_trigger_all_cpu_backtrace+0x3e1/0x490 [ 982.413314] [] ? nmi_trigger_all_cpu_backtrace+0x3c6/0x490 [ 982.420571] [] ? nmi_trigger_all_cpu_backtrace+0x3c6/0x490 [ 982.427829] [] watchdog.cold+0xe4/0xee [ 982.433428] [] ? watchdog+0xac/0xa00 [ 982.438777] [] ? reset_hung_task_detector+0x20/0x20 [ 982.445424] [] kthread+0x273/0x310 [ 982.450590] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.457288] [] ? _raw_spin_unlock_irq+0x39/0x60 [ 982.463591] [] ? finish_task_switch+0x1e1/0x660 [ 982.469941] [] ? finish_task_switch+0x1b3/0x660 [ 982.476247] [] ? __schedule+0x7af/0x1ee0 [ 982.481932] [] ? __schedule+0x7a3/0x1ee0 [ 982.487621] [] ? __schedule+0x7af/0x1ee0 [ 982.493314] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.499953] [] ret_from_fork+0x55/0x80 [ 982.505465] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 982.512481] Kernel Offset: disabled [ 982.518846] Rebooting in 86400 seconds..