IPVS: sync thread started: state = BACKUP, mcast_ifn = sit0, syncid = 0, id = 0
IPVS: stopping backup sync thread 5035 ...
INFO: task kworker/0:1:411 blocked for more than 120 seconds.
Not tainted 4.4.125-g38f41ec #21
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/0:1 D ffff8801d8eb7af8 26616 411 2 0x00000000
Workqueue: events_power_efficient crda_timeout_work
ffff8801d8eb7af8 ffff8801d8e60000 0000000000000002 0000000000000007
ffff8801d8e60000 ffff8801db21fdb8 ffff8801db21fde0 ffff8801db21f4d8
ffff8801db21f4c0 ffffffff84217840 ffff8801d8e60000 0000000000000000
Call Trace:
[<ffffffff8376b82a>] schedule+0x7a/0x1b0 kernel/sched/core.c:3359
[<ffffffff8376c023>] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3392
[<ffffffff837705e6>] __mutex_lock_common kernel/locking/mutex.c:582 [inline]
[<ffffffff837705e6>] mutex_lock_nested+0x306/0x850 kernel/locking/mutex.c:621
[<ffffffff82e860b7>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:70
[<ffffffff83490aee>] crda_timeout_work+0xe/0x30 net/wireless/reg.c:545
[<ffffffff811800f7>] process_one_work+0x7d7/0x16e0 kernel/workqueue.c:2064
[<ffffffff811810d9>] worker_thread+0xd9/0xfc0 kernel/workqueue.c:2196
[<ffffffff81190b48>] kthread+0x268/0x300 kernel/kthread.c:211
[<ffffffff83779d95>] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:510
3 locks held by kworker/0:1/411:
#0: ("events_power_efficient"){.+.+.+}, at: [<ffffffff8117ffdd>] work_static include/linux/workqueue.h:186 [inline]
#0: ("events_power_efficient"){.+.+.+}, at: [<ffffffff8117ffdd>] set_work_data kernel/workqueue.c:625 [inline]
#0: ("events_power_efficient"){.+.+.+}, at: [<ffffffff8117ffdd>] set_work_pool_and_clear_pending kernel/workqueue.c:652 [inline]
#0: ("events_power_efficient"){.+.+.+}, at: [<ffffffff8117ffdd>] process_one_work+0x6bd/0x16e0 kernel/workqueue.c:2057
#1: ((crda_timeout).work){+.+.+.}, at: [<ffffffff81180017>] process_one_work+0x6f7/0x16e0 kernel/workqueue.c:2061
#2: (rtnl_mutex){+.+.+.}, at: [<ffffffff82e860b7>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:70
Sending NMI to all CPUs:
NMI backtrace for cpu 0
CPU: 0 PID: 486 Comm: khungtaskd Not tainted 4.4.125-g38f41ec #21
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800bacf4800 task.stack: ffff8800bac90000
RIP: 0010:[<ffffffff810c3f87>] [<ffffffff810c3f87>] native_apic_mem_write arch/x86/include/asm/apic.h:94 [inline]
RIP: 0010:[<ffffffff810c3f87>] [<ffffffff810c3f87>] __default_send_IPI_dest_field arch/x86/include/asm/ipi.h:119 [inline]
RIP: 0010:[<ffffffff810c3f87>] [<ffffffff810c3f87>] _flat_send_IPI_mask arch/x86/kernel/apic/apic_flat_64.c:61 [inline]
RIP: 0010:[<ffffffff810c3f87>] [<ffffffff810c3f87>] flat_send_IPI_mask+0xf7/0x1a0 arch/x86/kernel/apic/apic_flat_64.c:69
RSP: 0018:ffff8800bac97cb8 EFLAGS: 00000046
RAX: 0000000003000000 RBX: 0000000000000c00 RCX: 0000000000000000
RDX: 0000000000000c00 RSI: 0000000000000000 RDI: ffffffffff5fb300
RBP: ffff8800bac97ce0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000246
R13: 0000000000000003 R14: ffffffff8426f5a0 R15: 0000000000000002
FS: 0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0aea5bc030 CR3: 00000000b5dfa000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
ffffffff8426f5a0 ffffffff847f0b40 fffffbfff08fdc1c dffffc0000000000
ffff8801db31bca0 ffff8800bac97d00 ffffffff810b9abb ffffffff839f6dc0
0000000000000003 ffff8800bac97d60 ffffffff81d11764 ffffffff8141b993
Call Trace:
[<ffffffff810b9abb>] nmi_raise_cpu_backtrace+0x5b/0x70 arch/x86/kernel/apic/hw_nmi.c:33
[<ffffffff81d11764>] nmi_trigger_all_cpu_backtrace+0x4a4/0x550 lib/nmi_backtrace.c:85
[<ffffffff810b9b54>] arch_trigger_all_cpu_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
[<ffffffff813695ca>] trigger_all_cpu_backtrace include/linux/nmi.h:44 [inline]
[<ffffffff813695ca>] check_hung_task kernel/hung_task.c:125 [inline]
[<ffffffff813695ca>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
[<ffffffff813695ca>] watchdog+0x6fa/0xae0 kernel/hung_task.c:238
[<ffffffff81190b48>] kthread+0x268/0x300 kernel/kthread.c:211
[<ffffffff83779d95>] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:510
Code: b3 5f ff f6 c4 10 75 e1 44 89 e8 c1 e0 18 89 04 25 10 b3 5f ff 44 89 fa 09 da 80 cf 04 41 83 ff 02 0f 44 d3 89 14 25 00 b3 5f ff <41> f7 c4 00 02 00 00 74 1a e8 2b 33 17 00 4c 89 e7 57 9d 0f 1f
NMI backtrace for cpu 1
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.4.125-g38f41ec #21
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d9b49800 task.stack: ffff8801d9b58000
RIP: 0010:[<ffffffff810d0666>] [<ffffffff810d0666>] native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:49
RSP: 0018:ffff8801d9b5fd98 EFLAGS: 00000246
RAX: 0000000000000007 RBX: ffffffff847dec48 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8801d9b4a0dc
RBP: ffff8801d9b5fd98 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: fffffbfff07088c0 R14: ffffffff847ecfb8 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0aea8b4000 CR3: 00000000b4b4a000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
ffff8801d9b5fdd0 ffffffff81027e65 ffff8801d9b60000 ffffffff847dec48
fffffbfff07088c0 ffffffff847ecfb8 0000000000000000 ffff8801d9b5fde0
ffffffff810293da ffff8801d9b5fdf8 ffffffff81221948 dffffc0000000000
Call Trace:
[<ffffffff81027e65>] arch_safe_halt arch/x86/include/asm/paravirt.h:117 [inline]
[<ffffffff81027e65>] default_idle+0x55/0x3c0 arch/x86/kernel/process.c:290
[<ffffffff810293da>] arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:281
[<ffffffff81221948>] default_idle_call+0x48/0x70 kernel/sched/idle.c:93
[<ffffffff8122204d>] cpuidle_idle_call kernel/sched/idle.c:157 [inline]
[<ffffffff8122204d>] cpu_idle_loop kernel/sched/idle.c:253 [inline]
[<ffffffff8122204d>] cpu_startup_entry+0x5fd/0x8f0 kernel/sched/idle.c:301
[<ffffffff810adcd4>] start_secondary+0x304/0x3e0 arch/x86/kernel/smpboot.c:242
Code: 00 00 00 00 00 55 48 89 e5 fa 5d c3 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 fb 5d c3 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 fb f4 <5d> c3 0f 1f 84 00 00 00 00 00 55 48 89 e5 f4 5d c3 66 0f 1f 84