Warning: Permanently added '10.128.10.17' (ECDSA) to the list of known hosts. executing program executing program 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 "4" 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 [ 602.199744] INFO: task syz-executor634:3911 blocked for more than 120 seconds. [ 602.207133] Not tainted 4.4.138-g07c0138 #62 [ 602.212111] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 602.220073] syz-executor634 D ffff8801d817fa80 27392 3911 3909 0x00000000 [ 602.227516] ffff8801d817fa80 0000000000000246 0000000000000296 0000000041b58ab3 [ 602.235569] ffffffff841e1800 ffff8801db31fdb8 ffff8801db31fde0 ffff8801db31f4d8 [ 602.243580] ffff8801db31f4c0 ffff8801d9a41800 ffff8801c62e0000 0000000000000000 [ 602.251600] Call Trace: [ 602.254227] [] schedule+0x7a/0x1b0 [ 602.259405] [] blk_mq_freeze_queue_wait+0x120/0x240 [ 602.266106] [] ? blk_mq_tags_cpumask+0x20/0x20 [ 602.272344] [] ? percpu_ref_kill_and_confirm+0xff/0x300 [ 602.279374] [] ? prepare_to_wait_event+0x430/0x430 [ 602.285964] [] blk_mq_freeze_queue+0x1d/0x20 [ 602.292030] [] lo_ioctl+0x722/0x1ad0 [ 602.297368] [] ? loop_probe+0x180/0x180 [ 602.302998] [] blkdev_ioctl+0x7b8/0x19c0 [ 602.308690] [] ? blkpg_ioctl+0x900/0x900 [ 602.314435] [] ? rcu_read_lock_sched_held+0x103/0x120 [ 602.321297] [] ? do_readv_writev+0x1c8/0x6e0 [ 602.327331] [] ? vfs_write+0x4e0/0x4e0 [ 602.332879] [] block_ioctl+0xde/0x120 [ 602.338305] [] ? blkdev_read_iter+0x170/0x170 [ 602.344460] [] do_vfs_ioctl+0x63f/0xf40 [ 602.350086] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 602.356989] [] ? ioctl_preallocate+0x1f0/0x1f0 [ 602.363305] [] ? kmem_cache_alloc+0x46/0x2a0 [ 602.369345] [] ? vfs_writev+0x83/0xb0 [ 602.374824] [] ? security_file_ioctl+0x8f/0xc0 [ 602.381060] [] SyS_ioctl+0x8f/0xc0 [ 602.386229] [] entry_SYSCALL_64_fastpath+0x22/0x9e [ 602.392920] 1 lock held by syz-executor634/3911: [ 602.397648] #0: (&lo->lo_ctl_mutex/1){+.+.+.}, at: [] lo_ioctl+0x8b/0x1ad0 [ 602.407132] Sending NMI to all CPUs: [ 602.412144] NMI backtrace for cpu 0 [ 602.415746] CPU: 0 PID: 491 Comm: khungtaskd Not tainted 4.4.138-g07c0138 #62 [ 602.423034] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 602.432400] task: ffff8801d91f4800 task.stack: ffff8800bb090000 [ 602.438440] RIP: 0010:[] [] flat_send_IPI_mask+0xf6/0x1a0 [ 602.447196] RSP: 0018:ffff8800bb097cc8 EFLAGS: 00000046 [ 602.452646] RAX: 0000000003000000 RBX: 0000000000000c00 RCX: 0000000000000000 [ 602.459928] RDX: 0000000000000c00 RSI: 0000000000000000 RDI: ffffffffff5fb300 [ 602.467188] RBP: ffff8800bb097cf0 R08: 0000000000000001 R09: 0000000000000000 [ 602.474475] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000246 [ 602.481755] R13: 0000000000000003 R14: 0000000000000002 R15: ffffffff8446f6a0 [ 602.489003] FS: 0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 602.497242] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 602.503121] CR2: 00007f4ec5d71000 CR3: 000000000440c000 CR4: 00000000001606f0 [ 602.510402] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 602.517654] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 602.525029] Stack: [ 602.527163] ffffffff8446f6a0 ffffffff84a18ee0 0000000000000007 fffffbfff0942c8c [ 602.534715] 0000000000000040 ffff8800bb097d10 ffffffff810b5ae1 ffffffff83c0b460 [ 602.542246] 0000000000000003 ffff8800bb097d68 ffffffff81e19d83 ffffffff8140dd6f [ 602.549780] Call Trace: [ 602.552336] [] nmi_raise_cpu_backtrace+0x61/0x80 [ 602.558721] [] nmi_trigger_all_cpu_backtrace.cold.4+0x70/0xad [ 602.566281] [] ? print_lock+0x9f/0xa2 [ 602.571730] [] ? irq_force_complete_move+0x350/0x350 [ 602.578455] [] arch_trigger_all_cpu_backtrace+0x14/0x20 [ 602.585476] [] watchdog.cold.1+0xd3/0xee [ 602.591184] [] ? watchdog+0xb0/0x9a0 [ 602.596522] [] kthread+0x268/0x300 [ 602.601722] [] ? reset_hung_task_detector+0x20/0x20 [ 602.608360] [] ? kthread_create_on_node+0x400/0x400 [ 602.615039] [] ? kthread_create_on_node+0x400/0x400 [ 602.621698] [] ret_from_fork+0x55/0x80 [ 602.627211] [] ? kthread_create_on_node+0x400/0x400 [ 602.633881] 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 02 [ 602.652871] NMI backtrace for cpu 1 [ 602.656484] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.4.138-g07c0138 #62 [ 602.663509] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 602.672864] task: ffff8801d9a41800 task.stack: ffff8801d9a50000 [ 602.678897] RIP: 0010:[] [] mark_lock+0xaa/0x1280 [ 602.686960] RSP: 0018:ffff8801d9a57b38 EFLAGS: 00000046 [ 602.692401] RAX: dffffc0000000000 RBX: ffff8801d9a420e0 RCX: 1ffff1003b348420 [ 602.699695] RDX: 1ffffffff0a71b26 RSI: ffff8801d9a420e0 RDI: ffffffff8538d930 [ 602.706950] RBP: ffff8801d9a57b80 R08: ffff8801d9a42100 R09: 0000000000000000 [ 602.714250] R10: ffffffff83a44740 R11: ffff8801d9a41800 R12: ffffffff8538d900 [ 602.721524] R13: 0000000000001000 R14: 000000000000000c R15: ffff8801d9a41800 [ 602.728770] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 602.737006] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 602.742882] CR2: 0000000000bb5000 CR3: 00000000b1215000 CR4: 00000000001606f0 [ 602.750153] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 602.757400] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 602.764675] Stack: [ 602.766801] ffff8801d9a57bd0 ffffffff812c46ec ffff8801d9a420d8 00000000841e562a [ 602.774343] ffff8801d9a420e0 0000000000000024 ffffffff844bdc20 0000000000000000 [ 602.781876] 0000000000000002 ffff8801d9a57d28 ffffffff8122fab6 ffff8801db319640 [ 602.789381] Call Trace: [ 602.791985] [] ? tick_program_event+0x10c/0x190 [ 602.798275] [] __lock_acquire+0xa86/0x5270 [ 602.804166] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 602.811094] [] ? hrtimer_start_range_ns+0x670/0x1420 [ 602.817821] [] ? debug_check_no_locks_freed+0x210/0x210 [ 602.824848] [] ? retint_kernel+0x2d/0x2d [ 602.830549] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 602.837362] [] ? trace_hardirqs_on_thunk+0x17/0x19 [ 602.843950] [] ? check_preemption_disabled+0x3b/0x170 [ 602.850788] [] ? retint_kernel+0x2d/0x2d [ 602.856473] [] lock_acquire+0x15e/0x450 [ 602.862102] [] ? blocking_notifier_call_chain+0xa0/0xa0 [ 602.869088] [] ? check_preemption_disabled+0x3b/0x170 [ 602.875935] [] atomic_notifier_call_chain+0x48/0x140 [ 602.882688] [] ? blocking_notifier_call_chain+0xa0/0xa0 [ 602.889707] [] idle_notifier_call_chain+0x1e/0x30 [ 602.896171] [] arch_cpu_idle_exit+0x1f/0x30 [ 602.902159] [] cpu_startup_entry+0x269/0x780 [ 602.908192] [] ? call_cpuidle+0xe0/0xe0 [ 602.913825] [] start_secondary+0x324/0x400 [ 602.919705] [] ? set_cpu_sibling_map+0x1180/0x1180 [ 602.926270] Code: 01 00 00 49 81 ec b0 01 00 00 49 81 c4 40 9c 38 85 49 8d 7c 24 30 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 41 0e 00 00 4d 85 6c 24 30 74 5f 41 bd 01 00 00 00 48 83 [ 602.945484] Kernel panic - not syncing: hung_task: blocked tasks [ 602.951680] CPU: 1 PID: 491 Comm: khungtaskd Not tainted 4.4.138-g07c0138 #62 [ 602.958927] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 602.968268] 0000000000000000 fd4a1856d0904788 ffff8800bb097cb8 ffffffff81e0ed0d [ 602.976261] ffffffff83a836c0 0000000000000003 7fffffffffffffff 00000000003fff91 [ 602.984246] dffffc0000000000 ffff8800bb097d78 ffffffff8140a184 0000000041b58ab3 [ 602.992236] Call Trace: [ 602.994803] [] dump_stack+0xc1/0x124 [ 603.000149] [] panic+0x19e/0x38d [ 603.005137] [] ? add_taint.cold.4+0x16/0x16 [ 603.011082] [] ? nmi_trigger_all_cpu_backtrace+0x3e6/0x488 [ 603.018325] [] ? nmi_trigger_all_cpu_backtrace+0x395/0x488 [ 603.025586] [] ? nmi_trigger_all_cpu_backtrace+0x395/0x488 [ 603.032833] [] watchdog.cold.1+0xe4/0xee [ 603.038519] [] ? watchdog+0xb0/0x9a0 [ 603.043859] [] kthread+0x268/0x300 [ 603.049024] [] ? reset_hung_task_detector+0x20/0x20 [ 603.055662] [] ? kthread_create_on_node+0x400/0x400 [ 603.062299] [] ? kthread_create_on_node+0x400/0x400 [ 603.068937] [] ret_from_fork+0x55/0x80 [ 603.074442] [] ? kthread_create_on_node+0x400/0x400 [ 603.081640] Dumping ftrace buffer: [ 603.085208] (ftrace buffer empty) [ 603.088905] Kernel Offset: disabled [ 603.092517] Rebooting in 86400 seconds..