IPv6: ADDRCONF(NETDEV_CHANGE): nr0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): nr1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): nr2: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): nr4: link becomes ready
BUG: spinlock lockup suspected on CPU#1, kworker/u4:0/6
 lock: nf_conntrack_locks+0x0/0xe000, .magic: dead4ead, .owner: kworker/u4:0/6, .owner_cpu: 1
CPU: 1 PID: 6 Comm: kworker/u4:0 Not tainted 4.5.0-rc3+ #1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
 0000000000000000 ffff88012b767c18 ffffffff81883110 ffff88012b760180
 ffffffff8300a780 ffff88012b767c38 ffffffff811c48d3 ffffffff8300a780
 0000000089173700 ffff88012b767c68 ffffffff811c4a03 ffffffff8300a780
Call Trace:
 [<ffffffff81883110>] __dump_stack /lib/dump_stack.c:15 [inline]
 [<ffffffff81883110>] dump_stack+0x99/0xd9 /lib/dump_stack.c:51
 [<ffffffff811c48d3>] spin_dump+0x73/0xc0 /kernel/locking/spinlock_debug.c:67
 [<ffffffff811c4a03>] __spin_lock_debug /kernel/locking/spinlock_debug.c:117 [inline]
 [<ffffffff811c4a03>] do_raw_spin_lock+0xa3/0x160 /kernel/locking/spinlock_debug.c:137
 [<ffffffff825d1bae>] __raw_spin_lock /include/linux/spinlock_api_smp.h:145 [inline]
 [<ffffffff825d1bae>] _raw_spin_lock+0x3e/0x50 /kernel/locking/spinlock.c:151
 [<ffffffff8212aa9d>] spin_lock /include/linux/spinlock.h:302 [inline]
 [<ffffffff8212aa9d>] nf_conntrack_lock+0xd/0x50 /net/netfilter/nf_conntrack_core.c:74
 [<ffffffff8214356c>] ctnl_untimeout.isra.4+0xdc/0x110 /net/netfilter/nfnetlink_cttimeout.c:315
 [<ffffffff821435c8>] cttimeout_net_exit+0x28/0x80 /net/netfilter/nfnetlink_cttimeout.c:581
 [<ffffffff82098323>] ops_exit_list.isra.4+0x33/0x60 /net/core/net_namespace.c:134
 [<ffffffff82099599>] cleanup_net+0x1a9/0x270 /net/core/net_namespace.c:431
 [<ffffffff8118965b>] process_one_work+0x21b/0x690 /kernel/workqueue.c:2036
 [<ffffffff81189b19>] worker_thread+0x49/0x490 /kernel/workqueue.c:2170
 [<ffffffff811907fa>] kthread+0xea/0x100 /drivers/block/aoe/aoecmd.c:1312
 [<ffffffff825d2d6f>] ret_from_fork+0x3f/0x70 /arch/x86/entry/entry_64.S:468
INFO: rcu_preempt self-detected stall on CPU
	1-...: (10461 ticks this GP) idle=ac1/140000000000001/0 softirq=5703/5703 fqs=10437 
INFO: rcu_preempt detected stalls on CPUs/tasks:
	1-...: (10461 ticks this GP) idle=ac1/140000000000001/0 softirq=5703/5703 fqs=10437 
	(detected by 0, t=10508 jiffies, g=433, c=432, q=710)
Task dump for CPU 1:
kworker/u4:0    R  running task    12320     6      2 0x00000008
Workqueue: netns cleanup_net
 000000000000bea0 ffffffff8261deb0 ffff88012b767b48 ffffffff81081bc7
 ffff88012b767b14 00000000811d23fa ffff88012c103fc0 ffff88012b760180
 0000000000000001 ffff88012b764000 ffff88012b767bf8 000000002b767b20
Call Trace:
	 (t=10508 jiffies g=433 c=432 q=710)
Task dump for CPU 1:
kworker/u4:0    R  running task    12320     6      2 0x00000008
Workqueue: netns cleanup_net
 ffff88012b760180 ffff88012c103da0 ffffffff8119ffe3 0000000000000001
 ffffffff83072bc0 0000000000000086 ffff88012c103db8 ffffffff811a2dc2
 0000000000000002 ffff88012c103de8 ffffffff811dc889 ffff88012c117dc0
Call Trace:
 <IRQ>  [<ffffffff8119ffe3>] sched_show_task+0xe3/0x180 /kernel/sched/core.c:5036
 [<ffffffff811a2dc2>] dump_cpu_task+0x32/0x40 /kernel/sched/core.c:8717
 [<ffffffff811dc889>] rcu_dump_cpu_stacks+0x89/0xe0 /kernel/rcu/tree.c:1247
 [<ffffffff811e1a6d>] print_cpu_stall /kernel/rcu/tree.c:1354 [inline]
 [<ffffffff811e1a6d>] check_cpu_stall /kernel/rcu/tree.c:1418 [inline]
 [<ffffffff811e1a6d>] __rcu_pending /kernel/rcu/tree.c:3906 [inline]
 [<ffffffff811e1a6d>] rcu_pending /kernel/rcu/tree.c:3970 [inline]
 [<ffffffff811e1a6d>] rcu_check_callbacks+0x66d/0xa30 /kernel/rcu/tree.c:2795
 [<ffffffff811e8084>] update_process_times+0x34/0x60 /kernel/time/timer.c:1420
 [<ffffffff811f8b30>] tick_sched_handle.isra.20+0x20/0x60 /kernel/time/tick-sched.c:152
 [<ffffffff811f8e28>] tick_sched_timer+0x38/0x70 /kernel/time/tick-sched.c:1088
 [<ffffffff811e8c9d>] __run_hrtimer /kernel/time/hrtimer.c:1248 [inline]
 [<ffffffff811e8c9d>] __hrtimer_run_queues+0x11d/0x4a0 /kernel/time/hrtimer.c:1312
 [<ffffffff811e965a>] hrtimer_interrupt+0xaa/0x1b0 /kernel/time/hrtimer.c:1346
 [<ffffffff810bbb71>] local_apic_timer_interrupt+0x31/0x50 /arch/x86/kernel/apic/apic.c:907
 [<ffffffff810bc678>] smp_apic_timer_interrupt+0x38/0x50 /arch/x86/kernel/apic/apic.c:931
 [<ffffffff825d37bc>] apic_timer_interrupt+0x8c/0xa0 /arch/x86/entry/entry_64.S:687
 <EOI>  [<ffffffff81883070>] ? arch_local_irq_restore+0x12/0x19 /./arch/x86/include/asm/paravirt.h:786
 [<ffffffff81883140>] dump_stack+0xc9/0xd9 /lib/dump_stack.c:56
 [<ffffffff811c48d3>] spin_dump+0x73/0xc0 /kernel/locking/spinlock_debug.c:67
 [<ffffffff811c4a03>] __spin_lock_debug /kernel/locking/spinlock_debug.c:117 [inline]
 [<ffffffff811c4a03>] do_raw_spin_lock+0xa3/0x160 /kernel/locking/spinlock_debug.c:137
 [<ffffffff825d1bae>] __raw_spin_lock /include/linux/spinlock_api_smp.h:145 [inline]
 [<ffffffff825d1bae>] _raw_spin_lock+0x3e/0x50 /kernel/locking/spinlock.c:151
 [<ffffffff8212aa9d>] spin_lock /include/linux/spinlock.h:302 [inline]
 [<ffffffff8212aa9d>] nf_conntrack_lock+0xd/0x50 /net/netfilter/nf_conntrack_core.c:74
 [<ffffffff8214356c>] ctnl_untimeout.isra.4+0xdc/0x110 /net/netfilter/nfnetlink_cttimeout.c:315
 [<ffffffff821435c8>] cttimeout_net_exit+0x28/0x80 /net/netfilter/nfnetlink_cttimeout.c:581
 [<ffffffff82098323>] ops_exit_list.isra.4+0x33/0x60 /net/core/net_namespace.c:134
 [<ffffffff82099599>] cleanup_net+0x1a9/0x270 /net/core/net_namespace.c:431
 [<ffffffff8118965b>] process_one_work+0x21b/0x690 /kernel/workqueue.c:2036
 [<ffffffff81189b19>] worker_thread+0x49/0x490 /kernel/workqueue.c:2170
 [<ffffffff811907fa>] kthread+0xea/0x100 /drivers/block/aoe/aoecmd.c:1312
 [<ffffffff825d2d6f>] ret_from_fork+0x3f/0x70 /arch/x86/entry/entry_64.S:468
Sending NMI to all CPUs:
NMI backtrace for cpu 0
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.5.0-rc3+ #1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffffffff83021540 ti: ffffffff83000000 task.ti: ffffffff83000000
RIP: 0010:[<ffffffff810c8686>]  [<ffffffff810c8686>] native_safe_halt+0x6/0x10 /./arch/x86/include/asm/irqflags.h:50
RSP: 0018:ffffffff83003eb8  EFLAGS: 00000282
RAX: 0000000000000000 RBX: ffffffff83000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff82d20ccf RDI: ffffffff81089bf6
RBP: ffffffff83003eb8 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff83004000
R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff83000000
FS:  0000000000000000(0000) GS:ffff88012c000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000ef9000 CR3: 00000000b7bc5000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff83003ed8 ffffffff81089c09 ffffffff83000000 ffffffff83004000
 ffffffff83003ee8 ffffffff8108a61a ffffffff83003ef8 ffffffff811b80c5
 ffffffff83003f40 ffffffff811b84bf ffffffff8336a2e0 ffffffff83004000
Call Trace:
 [<ffffffff81089c09>] arch_safe_halt /./arch/x86/include/asm/paravirt.h:117 [inline]
 [<ffffffff81089c09>] default_idle+0x29/0x190 /arch/x86/kernel/process.c:304
 [<ffffffff8108a61a>] arch_cpu_idle+0xa/0x10 /arch/x86/kernel/process.c:295
 [<ffffffff811b80c5>] default_idle_call+0x25/0x50 /kernel/sched/idle.c:92
 [<ffffffff811b84bf>] cpuidle_idle_call /kernel/sched/idle.c:150 [inline]
 [<ffffffff811b84bf>] cpu_idle_loop /kernel/sched/idle.c:246 [inline]
 [<ffffffff811b84bf>] cpu_startup_entry+0x3cf/0x460 /kernel/sched/idle.c:294
 [<ffffffff825c89f1>] rest_init+0x131/0x140 /init/main.c:412
 [<ffffffff8327ef94>] start_kernel+0x44a/0x457 /init/main.c:683
 [<ffffffff8327e345>] x86_64_start_reservations+0x2a/0x2c /arch/x86/kernel/head64.c:203
 [<ffffffff8327e48c>] x86_64_start_kernel+0x145/0x152 /arch/x86/kernel/head64.c:184
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 
NMI backtrace for cpu 1
CPU: 1 PID: 6 Comm: kworker/u4:0 Not tainted 4.5.0-rc3+ #1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
task: ffff88012b760180 ti: ffff88012b764000 task.ti: ffff88012b764000
RIP: 0010:[<ffffffff810c8a66>]  [<ffffffff810c8a66>] native_write_msr_safe+0x6/0x40 /./arch/x86/include/asm/msr.h:132
RSP: 0018:ffff88012b767b68  EFLAGS: 00000086
RAX: 0000000000000400 RBX: ffffffff8324cc40 RCX: 0000000000000830
RDX: 0000000000000001 RSI: 0000000000000400 RDI: 0000000000000830
RBP: ffff88012b767b70 R08: 0000000000000400 R09: 0000000000000003
R10: ffff88012b760a30 R11: 0000000000000001 R12: 0000000000080000
R13: 0000000000000001 R14: 0000000000000002 R15: 000000000000a130
FS:  0000000000000000(0000) GS:ffff88012c100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007eff3538d150 CR3: 000000000301a000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff810c261a ffff88012b767bb8 ffffffff810c2701 0000000000000282
 0000000000000001 00000000000114e0 0000000000000001 ffffffff810bf280
 0000000000000040 0000000000000001 ffff88012b767bc8 ffffffff810c27ce
Call Trace:
 [<ffffffff810c2701>] __x2apic_send_IPI_mask+0xe1/0x150 /arch/x86/kernel/apic/x2apic_phys.c:62
 [<ffffffff810c27ce>] x2apic_send_IPI_mask+0xe/0x10 /arch/x86/kernel/apic/x2apic_cluster.c:87
 [<ffffffff810bf296>] nmi_raise_cpu_backtrace+0x16/0x20 /arch/x86/kernel/apic/hw_nmi.c:33
 [<ffffffff81887cc2>] nmi_trigger_all_cpu_backtrace+0x322/0x330 /lib/nmi_backtrace.c:85
 [<ffffffff810bf2f4>] arch_trigger_all_cpu_backtrace+0x14/0x20 /arch/x86/kernel/apic/hw_nmi.c:38
 [<ffffffff811c4a0d>] trigger_all_cpu_backtrace /include/linux/nmi.h:41 [inline]
 [<ffffffff811c4a0d>] __spin_lock_debug /kernel/locking/spinlock_debug.c:119 [inline]
 [<ffffffff811c4a0d>] do_raw_spin_lock+0xad/0x160 /kernel/locking/spinlock_debug.c:137
 [<ffffffff825d1bae>] __raw_spin_lock /include/linux/spinlock_api_smp.h:145 [inline]
 [<ffffffff825d1bae>] _raw_spin_lock+0x3e/0x50 /kernel/locking/spinlock.c:151
 [<ffffffff8212aa9d>] spin_lock /include/linux/spinlock.h:302 [inline]
 [<ffffffff8212aa9d>] nf_conntrack_lock+0xd/0x50 /net/netfilter/nf_conntrack_core.c:74
 [<ffffffff8214356c>] ctnl_untimeout.isra.4+0xdc/0x110 /net/netfilter/nfnetlink_cttimeout.c:315
 [<ffffffff821435c8>] cttimeout_net_exit+0x28/0x80 /net/netfilter/nfnetlink_cttimeout.c:581
 [<ffffffff82098323>] ops_exit_list.isra.4+0x33/0x60 /net/core/net_namespace.c:134
 [<ffffffff82099599>] cleanup_net+0x1a9/0x270 /net/core/net_namespace.c:431
 [<ffffffff8118965b>] process_one_work+0x21b/0x690 /kernel/workqueue.c:2036
 [<ffffffff81189b19>] worker_thread+0x49/0x490 /kernel/workqueue.c:2170
 [<ffffffff811907fa>] kthread+0xea/0x100 /drivers/block/aoe/aoecmd.c:1312
 [<ffffffff825d2d6f>] ret_from_fork+0x3f/0x70 /arch/x86/entry/entry_64.S:468
Code: 5b 5d c3 48 c1 e2 20 48 89 d3 31 d2 48 09 c3 48 89 de e8 ee 54 7f 00 48 89 d8 5b 5d c3 0f 1f 84 00 00 00 00 00 89 f0 89 f9 0f 30 <31> c0 0f 1f 44 00 00 c3 41 89 f0 48 89 d6 55 89 c2 48 c1 e6 20