Warning: Permanently added '10.128.0.169' (ECDSA) to the list of known hosts.
[  421.653186] random: sshd: uninitialized urandom read (32 bytes read)
[  421.738930] audit: type=1400 audit(1545214283.217:7): avc:  denied  { map } for  pid=1833 comm="syz-executor340" path="/root/syz-executor340748964" dev="sda1" ino=16461 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
net.ipv6.conf.syz_tun.accept_dad = 0
net.ipv6.conf.syz_tun.router_solicitations = 0
executing program

INIT: Id "1" 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 "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
[  714.710160] INFO: task kworker/1:1:68 blocked for more than 140 seconds.
[  714.717041]       Not tainted 4.14.89+ #26
[  714.722000] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  714.729973] kworker/1:1     D26560    68      2 0x80000000
[  714.735944] Workqueue: ipv6_addrconf addrconf_verify_work
[  714.741530] Call Trace:
[  714.744183]  ? __schedule+0x729/0x1ed0
[  714.748068]  ? __sched_text_start+0x8/0x8
[  714.753250]  ? lock_downgrade+0x560/0x560
[  714.757401]  ? lock_acquire+0x10f/0x380
[  714.761471]  ? __mutex_lock+0x1bc/0x1480
[  714.765558]  schedule+0x7f/0x1b0
[  714.768923]  schedule_preempt_disabled+0x13/0x20
[  714.773761]  __mutex_lock+0x521/0x1480
[  714.777754]  ? addrconf_verify_work+0xa/0x20
[  714.782238]  ? lock_downgrade+0x500/0x560
[  714.786398]  ? __ww_mutex_wakeup_for_backoff+0x240/0x240
[  714.791954]  ? lock_acquire+0x10f/0x380
[  714.795939]  ? addrconf_verify_work+0xa/0x20
[  714.800527]  addrconf_verify_work+0xa/0x20
[  714.804957]  process_one_work+0x86e/0x1670
[  714.809202]  ? pwq_dec_nr_in_flight+0x2b0/0x2b0
[  714.813952]  worker_thread+0xdc/0x1000
[  714.817957]  ? process_one_work+0x1670/0x1670
[  714.822604]  ? process_one_work+0x1670/0x1670
[  714.827107]  kthread+0x348/0x420
[  714.830531]  ? kthread_create_on_node+0xe0/0xe0
[  714.835209]  ret_from_fork+0x3a/0x50
[  714.838941] 
[  714.838941] Showing all locks held in the system:
[  714.845334] 1 lock held by khungtaskd/23:
[  714.849530]  #0:  (tasklist_lock){.+.+}, at: [<ffffffffa7404837>] debug_show_all_locks+0x74/0x20f
[  714.858600] 3 locks held by kworker/1:1/68:
[  714.862937]  #0:  ("%s"("ipv6_addrconf")){+.+.}, at: [<ffffffffa7329534>] process_one_work+0x784/0x1670
[  714.872545]  #1:  ((addr_chk_work).work){+.+.}, at: [<ffffffffa732956c>] process_one_work+0x7bc/0x1670
[  714.882155]  #2:  (rtnl_mutex){+.+.}, at: [<ffffffffa88e1c4a>] addrconf_verify_work+0xa/0x20
[  714.890818] 2 locks held by getty/1758:
[  714.894778]  #0:  (&tty->ldisc_sem){++++}, at: [<ffffffffa7f40ac0>] tty_ldisc_ref_wait+0x20/0x80
[  714.903842]  #1:  (&ldata->atomic_read_lock){+.+.}, at: [<ffffffffa7f3bf1f>] n_tty_read+0x1ff/0x1700
[  714.913165] 
[  714.914777] =============================================
[  714.914777] 
[  714.921849] NMI backtrace for cpu 0
[  714.925470] CPU: 0 PID: 23 Comm: khungtaskd Not tainted 4.14.89+ #26
[  714.931947] Call Trace:
[  714.934583]  dump_stack+0xb9/0x11b
[  714.938192]  ? irq_force_complete_move.cold.3+0x64/0x64
[  714.943640]  nmi_cpu_backtrace.cold.0+0x47/0x85
[  714.948320]  ? irq_force_complete_move.cold.3+0x64/0x64
[  714.953668]  nmi_trigger_cpumask_backtrace+0x121/0x146
[  714.959162]  watchdog+0x574/0xa70
[  714.962623]  ? reset_hung_task_detector+0x10/0x10
[  714.967473]  kthread+0x348/0x420
[  714.970940]  ? kthread_create_on_node+0xe0/0xe0
[  714.975669]  ret_from_fork+0x3a/0x50
[  714.979490] Sending NMI from CPU 0 to CPUs 1:
[  714.984058] NMI backtrace for cpu 1 skipped: idling at pc 0xffffffffa8a6a5c2
[  714.985013] Kernel panic - not syncing: hung_task: blocked tasks
[  714.997384] CPU: 0 PID: 23 Comm: khungtaskd Not tainted 4.14.89+ #26
[  715.003861] Call Trace:
[  715.006451]  dump_stack+0xb9/0x11b
[  715.010126]  panic+0x1bf/0x3a4
[  715.013325]  ? add_taint.cold.4+0x16/0x16
[  715.017530]  ? printk_safe_flush+0xb6/0x110
[  715.021906]  watchdog+0x585/0xa70
[  715.025423]  ? reset_hung_task_detector+0x10/0x10
[  715.030267]  kthread+0x348/0x420
[  715.033632]  ? kthread_create_on_node+0xe0/0xe0
[  715.038300]  ret_from_fork+0x3a/0x50
[  715.042436] Kernel Offset: 0x26200000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[  715.053406] Rebooting in 86400 seconds..