ip6_tunnel: non-ECT from fe80:00ff:0000:0000:0000:0000:0000:00bb with DS=0x5
ip6_tunnel: non-ECT from fe80:00ff:0000:0000:0000:0000:0000:00bb with DS=0x5
net_ratelimit: 1 callbacks suppressed
ip6_tunnel: non-ECT from fe80:00ff:0000:0000:0000:0000:0000:00bb with DS=0x5
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (10500 ticks this GP) idle=1e6/1/0x4000000000000002 softirq=234910/234910 fqs=0 
rcu: 	 (t=10500 jiffies g=352153 q=1898)
rcu: rcu_preempt kthread starved for 10500 jiffies! g352153 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
rcu: RCU grace-period kthread stack dump:
rcu_preempt     I21384    10      2 0x80000000
Call Trace:
 context_switch kernel/sched/core.c:2831 [inline]
 __schedule+0x86c/0x1ed0 kernel/sched/core.c:3472
 schedule+0xfe/0x460 kernel/sched/core.c:3516
 schedule_timeout+0x140/0x260 kernel/time/timer.c:1804
 rcu_gp_fqs_loop+0x762/0xa80 kernel/rcu/tree.c:1934
 rcu_gp_kthread+0x341/0xc70 kernel/rcu/tree.c:2090
 kthread+0x35a/0x440 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
NMI backtrace for cpu 1
CPU: 1 PID: 5655 Comm: kworker/1:6 Not tainted 4.20.0-rc7+ #359
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events xfrm_hash_rebuild
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1d3/0x2c6 lib/dump_stack.c:113
 nmi_cpu_backtrace.cold.4+0x63/0xa2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1c2/0x22c lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x16f/0x1bc kernel/rcu/tree.c:1195
 print_cpu_stall.cold.65+0x1f3/0x3c6 kernel/rcu/tree.c:1334
 check_cpu_stall kernel/rcu/tree.c:1408 [inline]
 rcu_pending kernel/rcu/tree.c:2961 [inline]
 rcu_check_callbacks+0xac1/0x1410 kernel/rcu/tree.c:2506
 update_process_times+0x2d/0x70 kernel/time/timer.c:1636
 tick_sched_handle+0x9f/0x180 kernel/time/tick-sched.c:164
 tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1274
 __run_hrtimer kernel/time/hrtimer.c:1398 [inline]
 __hrtimer_run_queues+0x41c/0x10d0 kernel/time/hrtimer.c:1460
 hrtimer_interrupt+0x313/0x780 kernel/time/hrtimer.c:1518
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1034 [inline]
 smp_apic_timer_interrupt+0x1a1/0x760 arch/x86/kernel/apic/apic.c:1059
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
 </IRQ>
RIP: 0010:selector_cmp net/xfrm/xfrm_policy.c:1390 [inline]
RIP: 0010:xfrm_policy_insert_list+0x62b/0x1020 net/xfrm/xfrm_policy.c:1534
Code: 95 18 ff ff ff 44 39 fa 0f 85 68 03 00 00 e8 4c 4f c3 fa 83 c3 01 49 83 c6 04 49 83 c5 04 89 de bf 0e 00 00 00 e8 45 50 c3 fa <83> fb 0e 0f 85 6e ff ff ff 44 0f b6 bd e8 fe ff ff 48 8b 9d e0 fe
RSP: 0018:ffff888185c9f340 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffffff86bb0a4b
RDX: 0000000000000003 RSI: 000000000000000e RDI: 0000000000000005
RBP: ffff888185c9f468 R08: ffff88819a5aa140 R09: 0000000000000008
R10: 0000000000000005 R11: ffff88819a5aa140 R12: dffffc0000000000
R13: ffff88818ec9c114 R14: ffff888182600594 R15: 0000000000000000
 xfrm_policy_inexact_insert+0x166/0xee0 net/xfrm/xfrm_policy.c:1195
 xfrm_hash_rebuild+0xfc1/0x1380 net/xfrm/xfrm_policy.c:1317
 process_one_work+0xc90/0x1c40 kernel/workqueue.c:2153
 worker_thread+0x17f/0x1390 kernel/workqueue.c:2296
 kthread+0x35a/0x440 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352