INIT: Id "3" 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 "2" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes Warning: Permanently added '10.128.0.154' (ECDSA) to the list of known hosts. 2019/03/09 15:45:29 parsed 1 programs 2019/03/09 15:45:31 executed programs: 0 INIT: Id "5" 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 "2" respawning too fast: disabled for 5 minutes INIT: Id "1" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes [ 1121.576273] INFO: task syz-executor.3:2206 blocked for more than 140 seconds. [ 1121.583684] Not tainted 4.4.174+ #4 [ 1121.588049] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1121.596339] syz-executor.3 D ffff8801d21ff648 25480 2206 1 0x00000004 [ 1121.604002] ffff8801d21ff648 ffff8800b4e65f00 8630f138dfd5bf9c ffff8800b4e65f00 [ 1121.612416] 0000000000000001 ffff8800b4e66700 ffff8801db61f180 ffff8801db61f1a8 [ 1121.620824] ffff8801db61e898 ffff8801d208af80 ffff8800b4e65f00 ffffed003a43f001 [ 1121.629142] Call Trace: [ 1121.631723] [] schedule+0x99/0x1d0 [ 1121.637075] [] schedule_preempt_disabled+0x13/0x20 [ 1121.643940] [] mutex_lock_nested+0x3c2/0xb80 [ 1121.650443] [] ? lo_open+0x1d/0xb0 [ 1121.656586] [] ? mutex_lock_nested+0x645/0xb80 [ 1121.663156] [] ? __blkdev_get+0x10c/0xdf0 [ 1121.669174] [] ? debug_lockdep_rcu_enabled+0x13/0xa0 [ 1121.676224] [] ? mutex_trylock+0x500/0x500 [ 1121.682268] [] ? disk_get_part+0x158/0x2c0 [ 1121.688884] [] ? loop_unregister_transfer+0x90/0x90 [ 1121.695989] [] lo_open+0x1d/0xb0 [ 1121.701038] [] __blkdev_get+0x2ae/0xdf0 [ 1121.706877] [] ? __blkdev_put+0x840/0x840 [ 1121.712914] [] ? trace_hardirqs_on+0x10/0x10 [ 1121.719068] [] blkdev_get+0x2e8/0x920 [ 1121.724769] [] ? bd_may_claim+0xd0/0xd0 [ 1121.730728] [] ? bd_acquire+0x8a/0x370 [ 1121.736531] [] ? _raw_spin_unlock+0x2d/0x50 [ 1121.742910] [] blkdev_open+0x1aa/0x250 [ 1121.748669] [] do_dentry_open+0x38f/0xbd0 [ 1121.755511] [] ? __inode_permission2+0x9e/0x250 [ 1121.761849] [] ? blkdev_get_by_dev+0x80/0x80 [ 1121.768117] [] vfs_open+0x10b/0x210 [ 1121.773491] [] ? may_open.isra.0+0xe7/0x210 [ 1121.779798] [] path_openat+0x136f/0x4470 [ 1121.785561] [] ? kasan_kmalloc.part.0+0xc6/0xf0 [ 1121.792090] [] ? may_open.isra.0+0x210/0x210 [ 1121.798489] [] ? trace_hardirqs_on+0x10/0x10 [ 1121.804624] [] do_filp_open+0x1a1/0x270 [ 1121.810509] [] ? trace_hardirqs_on+0x10/0x10 [ 1121.816888] [] ? user_path_mountpoint_at+0x50/0x50 [ 1121.823642] [] ? __alloc_fd+0x1ea/0x490 [ 1121.829497] [] ? _raw_spin_unlock+0x2d/0x50 [ 1121.835573] [] do_sys_open+0x2f8/0x600 [ 1121.841145] [] ? mntput+0x66/0x90 [ 1121.846404] [] ? filp_open+0x70/0x70 [ 1121.851781] [] ? SyS_mkdirat+0x164/0x250 [ 1121.857662] [] ? task_work_run+0x251/0x2b0 [ 1121.863565] [] ? SyS_mknod+0x40/0x40 [ 1121.869099] [] ? int_ret_from_sys_call+0x52/0xa3 [ 1121.875768] [] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 1121.882624] [] SyS_open+0x2d/0x40 [ 1121.887775] [] entry_SYSCALL_64_fastpath+0x1e/0x9a [ 1121.894507] 2 locks held by syz-executor.3/2206: [ 1121.899336] #0: (&bdev->bd_mutex){+.+.+.}, at: [] __blkdev_get+0x10c/0xdf0 [ 1121.908872] #1: (loop_index_mutex){+.+.+.}, at: [] lo_open+0x1d/0xb0 [ 1121.917871] Sending NMI to all CPUs: [ 1121.923220] NMI backtrace for cpu 0 [ 1121.926894] CPU: 0 PID: 20 Comm: khungtaskd Not tainted 4.4.174+ #4 [ 1121.933507] task: ffff8801da6f4740 task.stack: ffff8800001d0000 [ 1121.939844] RIP: 0010:[] [] flat_send_IPI_mask+0xf7/0x1b0 [ 1121.948620] RSP: 0018:ffff8800001d7c88 EFLAGS: 00000046 [ 1121.954316] RAX: 0000000000000000 RBX: 0000000000000c00 RCX: 0000000000000000 [ 1121.961801] RDX: 0000000000000c00 RSI: 0000000000000000 RDI: ffffffffff5fc300 [ 1121.969328] RBP: ffff8800001d7cb8 R08: 0000000000000018 R09: 0000000000000000 [ 1121.976784] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000246 [ 1121.984173] R13: 0000000003000000 R14: ffffffff82e5f2e0 R15: 0000000000000002 [ 1121.991768] FS: 0000000000000000(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000 [ 1122.000136] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1122.006215] CR2: 0000000000781f04 CR3: 00000001d731b000 CR4: 00000000001606b0 [ 1122.013607] Stack: [ 1122.015980] 0000000000000001 ffffffff82e5f2e0 ffffffff831a6ac0 fffffbfff0634c34 [ 1122.023698] 000000000001b6c0 0000000000000008 ffff8800001d7cd8 ffffffff81092bee [ 1122.031392] 0000000000000008 ffffffff82924260 ffff8800001d7d30 ffffffff81ab8252 [ 1122.038942] Call Trace: [ 1122.041550] [] nmi_raise_cpu_backtrace+0x5e/0x80 [ 1122.048101] [] nmi_trigger_all_cpu_backtrace.cold+0xa1/0xae [ 1122.055647] [] ? print_lock+0xa8/0xab [ 1122.061259] [] ? irq_force_complete_move+0x330/0x330 [ 1122.068097] [] arch_trigger_all_cpu_backtrace+0x14/0x20 [ 1122.075405] [] watchdog.cold+0xd3/0xee [ 1122.081276] [] ? watchdog+0xac/0xa00 [ 1122.086841] [] ? reset_hung_task_detector+0x20/0x20 [ 1122.093846] [] kthread+0x273/0x310 [ 1122.099330] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 1122.106194] [] ? _raw_spin_unlock_irq+0x39/0x60 [ 1122.112637] [] ? finish_task_switch+0x1e1/0x660 [ 1122.118983] [] ? finish_task_switch+0x1b3/0x660 [ 1122.125486] [] ? __schedule+0x7af/0x1ee0 [ 1122.131269] [] ? __schedule+0x7a3/0x1ee0 [ 1122.136989] [] ? __schedule+0x7af/0x1ee0 [ 1122.142695] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 1122.149370] [] ret_from_fork+0x55/0x80 [ 1122.154961] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 1122.161655] 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 [ 1122.181020] NMI backtrace for cpu 1 [ 1122.184628] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.4.174+ #4 [ 1122.191250] task: ffff8801da6897c0 task.stack: ffff8801da698000 [ 1122.197476] RIP: 0010:[] [] native_safe_halt+0x2/0x10 [ 1122.206367] RSP: 0018:ffff8801da69fd88 EFLAGS: 00000246 [ 1122.211927] RAX: 0000000000000007 RBX: ffffffff8319bf68 RCX: 0000000000000000 [ 1122.219227] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8801da68a084 [ 1122.226573] RBP: ffff8801da69fdb8 R08: 0000000000000000 R09: 0000000000000000 [ 1122.233883] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 1122.241692] R13: ffff8801da6a0000 R14: dffffc0000000000 R15: ffff8801da698000 [ 1122.249397] FS: 0000000000000000(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000 [ 1122.257718] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1122.264260] CR2: 000000000173b000 CR3: 00000001d731b000 CR4: 00000000001606b0 [ 1122.271585] Stack: [ 1122.276734] ffffffff81020b16 ffff8801da698000 0000000000000000 ffff8801da6a0000 [ 1122.286014] dffffc0000000000 ffff8801da698000 ffff8801da69fdc8 ffffffff81022d50 [ 1122.293950] ffff8801da69fde0 ffffffff811eb4c8 0000000000000000 ffff8801da69fea8 [ 1122.302685] Call Trace: [ 1122.305304] [] ? default_idle+0x56/0x3d0 [ 1122.311190] [] arch_cpu_idle+0x10/0x20 [ 1122.316766] [] default_idle_call+0x48/0x70 [ 1122.323052] [] cpu_startup_entry+0x6d1/0x810 [ 1122.329335] [] ? call_cpuidle+0xe0/0xe0 [ 1122.335447] [] start_secondary+0x31d/0x410 [ 1122.341734] [] ? set_cpu_sibling_map+0x10d0/0x10d0 [ 1122.348328] 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 [ 1122.368251] Kernel panic - not syncing: hung_task: blocked tasks [ 1122.374761] CPU: 0 PID: 20 Comm: khungtaskd Not tainted 4.4.174+ #4 [ 1122.382134] 0000000000000000 dba1bd2b7f57dd0c ffff8800001d7c60 ffffffff81aad1a1 [ 1122.390686] ffff8800b4e65f00 ffffffff82872120 dffffc0000000000 0000000000000002 [ 1122.398884] 00000000003fff9f ffff8800001d7d40 ffffffff813a48c2 0000000041b58ab3 [ 1122.407538] Call Trace: [ 1122.410360] [] dump_stack+0xc1/0x120 [ 1122.415901] [] panic+0x1b9/0x37b [ 1122.421076] [] ? add_taint.cold+0x16/0x16 [ 1122.427349] [] ? find_next_bit+0x44/0x50 [ 1122.433158] [] ? nmi_trigger_all_cpu_backtrace+0x3c6/0x490 [ 1122.440447] [] ? nmi_trigger_all_cpu_backtrace+0x3c6/0x490 [ 1122.448312] [] watchdog.cold+0xe4/0xee [ 1122.453989] [] ? watchdog+0xac/0xa00 [ 1122.459693] [] ? reset_hung_task_detector+0x20/0x20 [ 1122.466661] [] kthread+0x273/0x310 [ 1122.471998] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 1122.478664] [] ? _raw_spin_unlock_irq+0x39/0x60 [ 1122.485485] [] ? finish_task_switch+0x1e1/0x660 [ 1122.491830] [] ? finish_task_switch+0x1b3/0x660 [ 1122.498586] [] ? __schedule+0x7af/0x1ee0 [ 1122.504388] [] ? __schedule+0x7a3/0x1ee0 [ 1122.510236] [] ? __schedule+0x7af/0x1ee0 [ 1122.515998] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 1122.522954] [] ret_from_fork+0x55/0x80 [ 1122.528549] [] ? kthread_create_on_node+0x4c0/0x4c0 [ 1122.535827] Kernel Offset: disabled [ 1122.539526] Rebooting in 86400 seconds..