320515 pages reserved
binder: undelivered TRANSACTION_COMPLETE
binder: undelivered TRANSACTION_ERROR: 29201
INFO: task kworker/0:1:25 blocked for more than 120 seconds.
      Not tainted 4.9.93-g2ba4887 #2
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/0:1     D26920    25      2 0x00000000
Workqueue: events_power_efficient reg_check_chans_work
 ffff8801d9510000 0000000000000000 ffff8801b87a4fc0 ffffffff84429800
 ffff8801db221b98 ffff8801d951fa18 ffffffff838bebed ffff8801d95108c0
 ffffed003b2a2117 ffff8801d9510000 00fffc0000000000 ffff8801db222468
Call Trace:
 [<ffffffff838c01ef>] schedule+0x7f/0x1b0 kernel/sched/core.c:3556
 [<ffffffff838c0b73>] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3589
 [<ffffffff838c4ff6>] __mutex_lock_common kernel/locking/mutex.c:582 [inline]
 [<ffffffff838c4ff6>] mutex_lock_nested+0x326/0x870 kernel/locking/mutex.c:621
 [<ffffffff82f8d527>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:70
 [<ffffffff835b9574>] reg_check_chans_work+0x74/0xd90 net/wireless/reg.c:1652
 [<ffffffff8118ad31>] process_one_work+0x7e1/0x1500 kernel/workqueue.c:2092
 [<ffffffff8118bb26>] worker_thread+0xd6/0x10a0 kernel/workqueue.c:2226
 [<ffffffff8119abed>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff838cfc9c>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373

Showing all locks held in the system:
3 locks held by kworker/0:1/25:
 #0:  ("events_power_efficient"){.+.+.+}, at: [<ffffffff8118ac3e>] work_static include/linux/workqueue.h:186 [inline]
 #0:  ("events_power_efficient"){.+.+.+}, at: [<ffffffff8118ac3e>] set_work_data kernel/workqueue.c:617 [inline]
 #0:  ("events_power_efficient"){.+.+.+}, at: [<ffffffff8118ac3e>] set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline]
 #0:  ("events_power_efficient"){.+.+.+}, at: [<ffffffff8118ac3e>] process_one_work+0x6ee/0x1500 kernel/workqueue.c:2085
 #1:  ((reg_check_chans).work){+.+...}, at: [<ffffffff8118ac78>] process_one_work+0x728/0x1500 kernel/workqueue.c:2089
 #2:  (rtnl_mutex){+.+.+.}, at: [<ffffffff82f8d527>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:70
2 locks held by khungtaskd/515:
 #0:  (rcu_read_lock){......}, at: [<ffffffff81363f1c>] check_hung_uninterruptible_tasks kernel/hung_task.c:168 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff81363f1c>] watchdog+0x11c/0xa20 kernel/hung_task.c:239
 #1:  (tasklist_lock){.+.+..}, at: [<ffffffff81423380>] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4336
3 locks held by kworker/0:3/1805:
 #0:  ("%s"("ipv6_addrconf")){.+.+..}, at: [<ffffffff8118ac3e>] work_static include/linux/workqueue.h:186 [inline]
 #0:  ("%s"("ipv6_addrconf")){.+.+..}, at: [<ffffffff8118ac3e>] set_work_data kernel/workqueue.c:617 [inline]
 #0:  ("%s"("ipv6_addrconf")){.+.+..}, at: [<ffffffff8118ac3e>] set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline]
 #0:  ("%s"("ipv6_addrconf")){.+.+..}, at: [<ffffffff8118ac3e>] process_one_work+0x6ee/0x1500 kernel/workqueue.c:2085
 #1:  ((addr_chk_work).work){+.+...}, at: [<ffffffff8118ac78>] process_one_work+0x728/0x1500 kernel/workqueue.c:2089
 #2:  (rtnl_mutex){+.+.+.}, at: [<ffffffff82f8d527>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:70
1 lock held by rsyslogd/3652:
 #0:  (&f->f_pos_lock){+.+.+.}, at: [<ffffffff815d4dac>] __fdget_pos+0xac/0xd0 fs/file.c:781
2 locks held by getty/3748:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff838cdc92>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff820061e2>] n_tty_read+0x202/0x16b0 drivers/tty/n_tty.c:2133
1 lock held by syz-executor4/7513:
 #0:  (ipvs->sync_mutex){+.+.+.}, at: [<ffffffff831bb0e5>] do_ip_vs_set_ctl+0x645/0xbd0 net/netfilter/ipvs/ip_vs_ctl.c:2402
2 locks held by syz-executor4/7557:
 #0:  (rtnl_mutex){+.+.+.}, at: [<ffffffff82f8d527>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:70
 #1:  (ipvs->sync_mutex){+.+.+.}, at: [<ffffffff831bb3ad>] do_ip_vs_set_ctl+0x90d/0xbd0 net/netfilter/ipvs/ip_vs_ctl.c:2397
1 lock held by ipvs-b:3:0/7521:
 #0:  (rtnl_mutex){+.+.+.}, at: [<ffffffff82f8d527>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:70

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

NMI backtrace for cpu 0
CPU: 0 PID: 515 Comm: khungtaskd Not tainted 4.9.93-g2ba4887 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d862fd08 ffffffff81d9aa29 0000000000000000 0000000000000000
 0000000000000000 0000000000000001 ffffffff810b7d60 ffff8801d862fd40
 ffffffff81da5d57 0000000000000000 0000000000000000 0000000000000002
Call Trace:
 [<ffffffff81d9aa29>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d9aa29>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81da5d57>] nmi_cpu_backtrace.cold.2+0x48/0x87 lib/nmi_backtrace.c:99
 [<ffffffff81da5cea>] nmi_trigger_cpumask_backtrace+0x12a/0x14f lib/nmi_backtrace.c:60
 [<ffffffff810b7e64>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37
 [<ffffffff813644b4>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline]
 [<ffffffff813644b4>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff813644b4>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff813644b4>] watchdog+0x6b4/0xa20 kernel/hung_task.c:239
 [<ffffffff8119abed>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff838cfc9c>] 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 skipped: idling at pc 0xffffffff838ce6f6