ip6_tunnel: ip6tnl1 xmit: Local address not yet configured!
ip6_tunnel: ip6tnl1 xmit: Local address not yet configured!
ip6_tunnel: ip6tnl2 xmit: Local address not yet configured!
INFO: task kworker/1:1:21614 blocked for more than 140 seconds.
      Not tainted 4.9.155+ #27
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/1:1     D27336 21614      2 0x80000000
Workqueue: events linkwatch_event
 ffff8801a5c78000 ffff8801a1449b80 ffff8801db721000 ffff880195a4c740
 ffff8801db721018 ffff8801a462fa88 ffffffff82806806 12c18903193341b0
 0000000000000002 ffff8801a5c788b0 0000000000000006 ffff8801db7218f0
Call Trace:
 [<ffffffff82807d92>] schedule+0x92/0x1c0 kernel/sched/core.c:3553
 [<ffffffff82808733>] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3586
 [<ffffffff8280a68d>] __mutex_lock_common kernel/locking/mutex.c:582 [inline]
 [<ffffffff8280a68d>] mutex_lock_nested+0x38d/0x920 kernel/locking/mutex.c:621
 [<ffffffff82343527>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:70
 [<ffffffff8235a19e>] linkwatch_event+0xe/0x60 net/core/link_watch.c:236
 [<ffffffff8113022b>] process_one_work+0x88b/0x15c0 kernel/workqueue.c:2092
 [<ffffffff8113153f>] worker_thread+0x5df/0x11d0 kernel/workqueue.c:2226
 [<ffffffff81142028>] kthread+0x278/0x310 kernel/kthread.c:211
 [<ffffffff82816c5c>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373

Showing all locks held in the system:
2 locks held by khungtaskd/24:
 #0:  (rcu_read_lock){......}, at: [<ffffffff8131bbab>] check_hung_uninterruptible_tasks kernel/hung_task.c:168 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff8131bbab>] watchdog+0x11b/0xa40 kernel/hung_task.c:239
 #1:  (tasklist_lock){.+.?..}, at: [<ffffffff813fea8f>] debug_show_all_locks+0x7f/0x21f kernel/locking/lockdep.c:4336
2 locks held by getty/2040:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814b83>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377
 #1:  (&ldata->atomic_read_lock){+.+.+.}, at: [<ffffffff81d3982e>] n_tty_read+0x1fe/0x1820 drivers/tty/n_tty.c:2156
3 locks held by kworker/1:1/21614:
 #0:  ("events"){.+.+.+}, at: [<ffffffff81130130>] process_one_work+0x790/0x15c0 kernel/workqueue.c:2085
 #1:  ((linkwatch_work).work){+.+...}, at: [<ffffffff8113016e>] process_one_work+0x7ce/0x15c0 kernel/workqueue.c:2089
 #2:  (rtnl_mutex){+.+.+.}, at: [<ffffffff82343527>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:70
3 locks held by kworker/1:3/8902:
 #0:  ("%s"("ipv6_addrconf")){.+.+..}, at: [<ffffffff81130130>] process_one_work+0x790/0x15c0 kernel/workqueue.c:2085
 #1:  ((addr_chk_work).work){+.+...}, at: [<ffffffff8113016e>] process_one_work+0x7ce/0x15c0 kernel/workqueue.c:2089
 #2:  (rtnl_mutex){+.+.+.}, at: [<ffffffff82343527>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:70

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 24 Comm: khungtaskd Not tainted 4.9.155+ #27
 ffff8801d9907cd0 ffffffff81b47871 0000000000000000 0000000000000000
 0000000000000000 ffffffff81097301 00000000003fff48 ffff8801d9907d08
 ffffffff81b52afc 0000000000000000 0000000000000000 0000000000000000
Call Trace:
 [<ffffffff81b47871>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81b47871>] dump_stack+0xc1/0x120 lib/dump_stack.c:51
 [<ffffffff81b52afc>] nmi_cpu_backtrace.cold+0x47/0x87 lib/nmi_backtrace.c:99
 [<ffffffff81b52a84>] nmi_trigger_cpumask_backtrace+0x124/0x155 lib/nmi_backtrace.c:60
 [<ffffffff81097494>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37
 [<ffffffff8131c087>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline]
 [<ffffffff8131c087>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff8131c087>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff8131c087>] watchdog+0x5f7/0xa40 kernel/hung_task.c:239
 [<ffffffff81142028>] kthread+0x278/0x310 kernel/kthread.c:211
 [<ffffffff82816c5c>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 13326 Comm: kworker/1:0 Not tainted 4.9.155+ #27
Workqueue: events_power_efficient gc_worker
c
task: ffff8801a7f117c0 task.stack: ffff8801a3b38000
RIP: 0010:[<ffffffff812437c6>] 
c [<ffffffff812437c6>] debug_lockdep_rcu_enabled+0x26/0xa0 kernel/rcu/update.c:264
RSP: 0000:ffff8801a3b3fae8  EFLAGS: 00000002
RAX: 0000000000000007 RBX: 0000000000000246 RCX: 1ffffffff067daf3
RDX: 0000000000000000 RSI: 1ffffffff05d2481 RDI: ffffffff82e92408
RBP: ffff8801a3b3fae8 R08: 0000000000000002 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff830d04a0
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa5babac000 CR3: 00000001d63d1000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Stack:
 ffff8801a3b3fb60
c ffffffff8120c501
c 0000000000000000
c ffffffff823f7c0b
c
 0000000000000246
c 0000000000000000
c ffffffff82c89ca0
c 0000000000000246
c
 ffff880100000000
c 0000000000000000
c dffffc0000000000
c 0000000000000000
c
Call Trace:
 [<ffffffff8120c501>] trace_lock_acquire include/trace/events/lock.h:12 [inline]
 [<ffffffff8120c501>] lock_acquire+0x1a1/0x3d0 kernel/locking/lockdep.c:3755
 [<ffffffff823f7c41>] rcu_lock_acquire include/linux/rcupdate.h:493 [inline]
 [<ffffffff823f7c41>] rcu_read_lock include/linux/rcupdate.h:875 [inline]
 [<ffffffff823f7c41>] gc_worker+0xc1/0x600 net/netfilter/nf_conntrack_core.c:969
 [<ffffffff8113022b>] process_one_work+0x88b/0x15c0 kernel/workqueue.c:2092
 [<ffffffff8113153f>] worker_thread+0x5df/0x11d0 kernel/workqueue.c:2226
 [<ffffffff81142028>] kthread+0x278/0x310 kernel/kthread.c:211
 [<ffffffff82816c5c>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373
Code: 
c00 
c00 
c00 
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c00 
c48 
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cc0 
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cd7 
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c48 
cba 
c00 
c00 
c00 
c00 
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cfc 
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cdf 
c48 
c89 
cc1 
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c07 
c48 
c89 
ce5 
c48 
cc1 
ce9 
c03 
c83 
cc0 
c03 
c0f 
cb6 
c14 
c11 
c<38> 
cd0 
c7c 
c04 
c84 
cd2 
c75 
c49 
c8b 
c15 
cc8 
c9f 
c1a 
c02 
c85 
cd2 
c74 
c3b 
c48 
cc7 
cc0 
c