INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "1" 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 INIT: Id "5" respawning too fast: disabled for 5 minutes [ 543.938120] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.251' (ECDSA) to the list of known hosts. [ 549.579816] random: sshd: uninitialized urandom read (32 bytes read) [ 549.666341] audit: type=1400 audit(1548272583.536:7): avc: denied { map } for pid=1886 comm="syz-executor995" path="/root/syz-executor995244055" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program [ 858.070506] INFO: task kworker/0:2:381 blocked for more than 140 seconds. [ 858.078227] Not tainted 4.14.95+ #14 [ 858.082865] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 858.091389] kworker/0:2 D27760 381 2 0x80000000 [ 858.097003] Workqueue: ipv6_addrconf addrconf_verify_work [ 858.102786] Call Trace: [ 858.105355] ? __schedule+0x91c/0x1f30 [ 858.109391] ? __sched_text_start+0x8/0x8 [ 858.113760] ? lock_downgrade+0x5d0/0x5d0 [ 858.118006] ? lock_acquire+0x10f/0x380 [ 858.122076] ? __mutex_lock+0x2c1/0x1430 [ 858.126209] schedule+0x92/0x1c0 [ 858.129700] schedule_preempt_disabled+0x13/0x20 [ 858.134570] __mutex_lock+0x559/0x1430 [ 858.138430] ? trace_hardirqs_on+0x10/0x10 [ 858.142714] ? lock_acquire+0x10f/0x380 [ 858.146668] ? addrconf_verify_work+0xa/0x20 [ 858.151162] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 858.156597] ? debug_object_deactivate+0x1e4/0x360 [ 858.161574] ? lock_acquire+0x10f/0x380 [ 858.165526] ? addrconf_verify_work+0xa/0x20 [ 858.170146] addrconf_verify_work+0xa/0x20 [ 858.174359] process_one_work+0x7c6/0x14e0 [ 858.178816] ? pwq_dec_nr_in_flight+0x2b0/0x2b0 [ 858.183715] worker_thread+0x5d7/0x1080 [ 858.187672] ? process_one_work+0x14e0/0x14e0 [ 858.192440] kthread+0x310/0x420 [ 858.195791] ? kthread_create_on_node+0xf0/0xf0 [ 858.201043] ret_from_fork+0x3a/0x50 [ 858.204873] [ 858.204873] Showing all locks held in the system: [ 858.211957] 1 lock held by khungtaskd/23: [ 858.216201] #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a [ 858.225381] 3 locks held by kworker/0:2/381: [ 858.229775] #0: ("%s"("ipv6_addrconf")){+.+.}, at: [] process_one_work+0x6e5/0x14e0 [ 858.239379] #1: ((addr_chk_work).work){+.+.}, at: [] process_one_work+0x71b/0x14e0 [ 858.249025] #2: (rtnl_mutex){+.+.}, at: [] addrconf_verify_work+0xa/0x20 [ 858.258219] 2 locks held by getty/1757: [ 858.262185] #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x22/0x80 [ 858.271386] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1f7/0x1700 [ 858.280746] [ 858.282351] ============================================= [ 858.282351] [ 858.289623] NMI backtrace for cpu 0 [ 858.293295] CPU: 0 PID: 23 Comm: khungtaskd Not tainted 4.14.95+ #14 [ 858.300136] Call Trace: [ 858.302705] dump_stack+0xb9/0x10e [ 858.306220] ? irq_force_complete_move+0x271/0x2e5 [ 858.311222] nmi_cpu_backtrace.cold+0x47/0x86 [ 858.315691] ? irq_force_complete_move.cold+0x7b/0x7b [ 858.320870] ? nmi_trigger_cpumask_backtrace+0x119/0x147 [ 858.326298] ? watchdog+0x56c/0xa90 [ 858.329898] ? reset_hung_task_detector+0x10/0x10 [ 858.334916] ? kthread+0x310/0x420 [ 858.338434] ? kthread_create_on_node+0xf0/0xf0 [ 858.343214] ? ret_from_fork+0x3a/0x50 [ 858.347179] Sending NMI from CPU 0 to CPUs 1: [ 858.351779] NMI backtrace for cpu 1 skipped: idling at pc 0xffffffffa5c4fa32 [ 858.352683] Kernel panic - not syncing: hung_task: blocked tasks [ 858.365164] CPU: 0 PID: 23 Comm: khungtaskd Not tainted 4.14.95+ #14 [ 858.371733] Call Trace: [ 858.374300] dump_stack+0xb9/0x10e [ 858.377902] panic+0x1d9/0x3c2 [ 858.381070] ? add_taint.cold+0x16/0x16 [ 858.385014] ? _raw_spin_unlock_irqrestore+0x54/0x70 [ 858.390186] ? cpumask_next+0x1f/0x30 [ 858.394077] ? printk_safe_flush+0xac/0x110 [ 858.398379] watchdog+0x57d/0xa90 [ 858.401804] ? reset_hung_task_detector+0x10/0x10 [ 858.406713] kthread+0x310/0x420 [ 858.410152] ? kthread_create_on_node+0xf0/0xf0 [ 858.414797] ret_from_fork+0x3a/0x50 [ 858.418970] Kernel Offset: 0x23400000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 858.429887] Rebooting in 86400 seconds..