INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "4" 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 Warning: Permanently added '10.128.0.24' (ECDSA) to the list of known hosts. executing program executing program executing program 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 "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 [ 602.343786] INFO: task syz-executor980:3899 blocked for more than 120 seconds. [ 602.351183] Not tainted 4.4.130-g12ef385 #28 [ 602.356132] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 602.364105] syz-executor980 D ffff8801d46dfa80 27392 3899 3897 0x00000000 [ 602.371589] ffff8801d46dfa80 0000000000000246 0000000000000296 0000000041b58ab3 [ 602.379640] ffffffff841e1200 ffff8801db21fdb8 ffff8801db21fde0 ffff8801db21f4d8 [ 602.387810] ffff8801db21f4c0 ffff8801d861c800 ffff8800bb380000 0000000000000000 [ 602.395836] Call Trace: [ 602.398487] [] schedule+0x7a/0x1b0 [ 602.403723] [] blk_mq_freeze_queue_wait+0x120/0x240 [ 602.410373] [] ? blk_mq_tags_cpumask+0x20/0x20 [ 602.416663] [] ? percpu_ref_kill_and_confirm+0xff/0x300 [ 602.423726] [] ? prepare_to_wait_event+0x430/0x430 [ 602.430320] [] blk_mq_freeze_queue+0x1d/0x20 [ 602.436426] [] lo_ioctl+0x722/0x1ad0 [ 602.441773] [] ? loop_probe+0x180/0x180 [ 602.447415] [] blkdev_ioctl+0x7b8/0x19c0 [ 602.453104] [] ? blkpg_ioctl+0x900/0x900 [ 602.458901] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 602.465988] [] ? do_readv_writev+0x1c8/0x6e0 [ 602.472051] [] ? vfs_write+0x4e0/0x4e0 [ 602.477670] [] block_ioctl+0xde/0x120 [ 602.483111] [] ? blkdev_read_iter+0x170/0x170 [ 602.489297] [] do_vfs_ioctl+0x63f/0xf40 [ 602.494929] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 602.501858] [] ? ioctl_preallocate+0x1f0/0x1f0 [ 602.508142] [] ? __kmalloc+0x116/0x310 [ 602.513687] [] ? vfs_writev+0x83/0xb0 [ 602.519167] [] ? security_file_ioctl+0x8f/0xc0 [ 602.525410] [] SyS_ioctl+0x8f/0xc0 [ 602.530578] [] entry_SYSCALL_64_fastpath+0x22/0x9e [ 602.537246] 1 lock held by syz-executor980/3899: [ 602.541978] #0: (&lo->lo_ctl_mutex/1){+.+.+.}, at: [] lo_ioctl+0x8b/0x1ad0 [ 602.551487] Sending NMI to all CPUs: [ 602.555464] NMI backtrace for cpu 0 [ 602.559072] CPU: 0 PID: 491 Comm: khungtaskd Not tainted 4.4.130-g12ef385 #28 [ 602.566360] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 602.575713] task: ffff8800bac44800 task.stack: ffff8800bb238000 [ 602.582091] RIP: 0010:[] [] flat_send_IPI_mask+0xf6/0x1a0 [ 602.590850] RSP: 0018:ffff8800bb23fcc8 EFLAGS: 00000046 [ 602.596293] RAX: 0000000003000000 RBX: 0000000000000c00 RCX: 0000000000000000 [ 602.603544] RDX: 0000000000000c00 RSI: 0000000000000000 RDI: ffffffffff5fb300 [ 602.610828] RBP: ffff8800bb23fcf0 R08: 0000000000000001 R09: 0000000000000000 [ 602.618101] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000246 [ 602.625372] R13: 0000000000000003 R14: 0000000000000002 R15: ffffffff8446f7a0 [ 602.632621] FS: 0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 602.640887] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 602.646777] CR2: 00007f5e200cd000 CR3: 00000000b64a4000 CR4: 00000000001606f0 [ 602.654057] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 602.661309] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 602.668603] Stack: [ 602.670733] ffffffff8446f7a0 ffffffff84a189a0 0000000000000007 fffffbfff0942be4 [ 602.678307] 0000000000000040 ffff8800bb23fd10 ffffffff810b5d21 ffffffff83c0b0a0 [ 602.685844] 0000000000000003 ffff8800bb23fd68 ffffffff81e18d03 ffffffff8140daaf [ 602.693358] Call Trace: [ 602.695952] [] nmi_raise_cpu_backtrace+0x61/0x80 [ 602.702337] [] nmi_trigger_all_cpu_backtrace.cold.4+0x70/0xad [ 602.709894] [] ? print_lock+0x9f/0xa2 [ 602.715336] [] ? irq_force_complete_move+0x350/0x350 [ 602.722059] [] arch_trigger_all_cpu_backtrace+0x14/0x20 [ 602.729468] [] watchdog.cold.1+0xd3/0xee [ 602.735182] [] ? watchdog+0xb0/0x9a0 [ 602.740527] [] kthread+0x268/0x300 [ 602.745734] [] ? reset_hung_task_detector+0x20/0x20 [ 602.752378] [] ? kthread_create_on_node+0x400/0x400 [ 602.759056] [] ? kthread_create_on_node+0x400/0x400 [ 602.765906] [] ret_from_fork+0x55/0x80 [ 602.771424] [] ? kthread_create_on_node+0x400/0x400 [ 602.778116] Code: b3 5f ff f6 c4 10 75 e2 44 89 e8 c1 e0 18 89 04 25 10 b3 5f ff 44 89 f2 09 da 80 cf 04 41 83 fe 02 0f 44 d3 89 14 25 00 b3 5f ff <41> f7 c4 00 02 00 00 75 1a 4c 89 e7 57 9d 0f 1f 44 00 00 e8 a2 [ 602.797144] NMI backtrace for cpu 1 [ 602.800750] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.4.130-g12ef385 #28 [ 602.808035] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 602.817402] task: ffff8801d9a41800 task.stack: ffff8801d9a50000 [ 602.823537] RIP: 0010:[] [] native_safe_halt+0x6/0x10 [ 602.831948] RSP: 0018:ffff8801d9a57da0 EFLAGS: 00000246 [ 602.837406] RAX: 0000000000000007 RBX: ffffffff84a05a68 RCX: 0000000000000000 [ 602.844701] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8801d9a420dc [ 602.852480] RBP: ffff8801d9a57da0 R08: 0000000000000000 R09: 0000000000000000 [ 602.859777] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 602.867056] R13: 0000000000000001 R14: fffffbfff074890c R15: ffffffff84a05a68 [ 602.874337] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 602.882553] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 602.888449] CR2: 0000000000c2c000 CR3: 00000001c8ca4000 CR4: 00000000001606f0 [ 602.895727] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 602.902981] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 602.910285] Stack: [ 602.912412] ffff8801d9a57dd8 ffffffff81025da5 ffff8801d9a58000 0000000000000000 [ 602.920157] 0000000000000000 fffffbfff074890c ffffffff84a05a68 ffff8801d9a57de8 [ 602.927697] ffffffff810272f0 ffff8801d9a57e00 ffffffff8121b9e7 dffffc0000000000 [ 602.935242] Call Trace: [ 602.937814] [] default_idle+0x55/0x3c0 [ 602.943326] [] arch_cpu_idle+0x10/0x20 [ 602.948879] [] default_idle_call+0x57/0x70 [ 602.954776] [] cpu_startup_entry+0x6af/0x780 [ 602.960810] [] ? call_cpuidle+0xe0/0xe0 [ 602.966442] [] start_secondary+0x324/0x400 [ 602.972304] [] ? set_cpu_sibling_map+0x1180/0x1180 [ 602.979623] Code: 00 00 00 00 00 55 48 89 e5 fa 5d c3 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 fb 5d c3 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 fb f4 <5d> c3 0f 1f 84 00 00 00 00 00 55 48 89 e5 f4 5d c3 66 0f 1f 84 [ 602.998821] Kernel panic - not syncing: hung_task: blocked tasks [ 603.004998] CPU: 1 PID: 491 Comm: khungtaskd Not tainted 4.4.130-g12ef385 #28 [ 603.012251] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 603.021605] 0000000000000000 7eea347144f467e7 ffff8800bb23fcb8 ffffffff81e0dc6d [ 603.029600] ffffffff83a835c0 0000000000000003 7fffffffffffffff 00000000003fff91 [ 603.037617] dffffc0000000000 ffff8800bb23fd78 ffffffff81409ec4 0000000041b58ab3 [ 603.045607] Call Trace: [ 603.048175] [] dump_stack+0xc1/0x124 [ 603.053515] [] panic+0x19e/0x38d [ 603.058515] [] ? add_taint.cold.4+0x16/0x16 [ 603.064460] [] ? nmi_trigger_all_cpu_backtrace+0x3e6/0x488 [ 603.071710] [] ? nmi_trigger_all_cpu_backtrace+0x395/0x488 [ 603.078959] [] ? nmi_trigger_all_cpu_backtrace+0x395/0x488 [ 603.086208] [] watchdog.cold.1+0xe4/0xee [ 603.091893] [] ? watchdog+0xb0/0x9a0 [ 603.097235] [] kthread+0x268/0x300 [ 603.102409] [] ? reset_hung_task_detector+0x20/0x20 [ 603.109060] [] ? kthread_create_on_node+0x400/0x400 [ 603.115705] [] ? kthread_create_on_node+0x400/0x400 [ 603.122437] [] ret_from_fork+0x55/0x80 [ 603.127949] [] ? kthread_create_on_node+0x400/0x400 [ 603.137238] Dumping ftrace buffer: [ 603.140807] (ftrace buffer empty) [ 603.144495] Kernel Offset: disabled [ 603.148110] Rebooting in 86400 seconds..