rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (10499 ticks this GP) idle=75e/1/0x4000000000000002 softirq=67741/67741 fqs=5249
rcu: (t=10501 jiffies g=89889 q=525)
NMI backtrace for cpu 1
CPU: 1 PID: 7756 Comm: kworker/1:4 Not tainted 5.0.0-rc3+ #37
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events xfrm_hash_rebuild
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1db/0x2d0 lib/dump_stack.c:113
nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1be/0x236 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+0x183/0x1cf kernel/rcu/tree.c:1211
print_cpu_stall.cold+0x227/0x40c kernel/rcu/tree.c:1348
check_cpu_stall kernel/rcu/tree.c:1422 [inline]
rcu_pending kernel/rcu/tree.c:3018 [inline]
rcu_check_callbacks+0xb32/0x1380 kernel/rcu/tree.c:2521
update_process_times+0x32/0x80 kernel/time/timer.c:1635
tick_sched_handle+0xa2/0x190 kernel/time/tick-sched.c:161
tick_sched_timer+0x47/0x130 kernel/time/tick-sched.c:1271
__run_hrtimer kernel/time/hrtimer.c:1389 [inline]
__hrtimer_run_queues+0x3a7/0x1050 kernel/time/hrtimer.c:1451
hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1509
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1035 [inline]
smp_apic_timer_interrupt+0x18d/0x760 arch/x86/kernel/apic/apic.c:1060
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
RIP: 0010:selector_cmp net/xfrm/xfrm_policy.c:1390 [inline]
RIP: 0010:xfrm_policy_insert_list+0x619/0xfb0 net/xfrm/xfrm_policy.c:1534
Code: ff 44 89 fe e8 98 c4 c3 fa 8b 95 38 ff ff ff 44 39 fa 0f 85 2d 03 00 00 e8 84 c3 c3 fa 83 c3 01 49 83 c6 04 49 83 c5 04 89 de 0e 00 00 00 e8 ed c4 c3 fa 83 fb 0e 0f 85 6e ff ff ff 44 0f b6
RSP: 0018:ffff88806991f680 EFLAGS: 00000292 ORIG_RAX: ffffffffffffff13
RAX: ffff88809dbd23c0 RBX: 0000000000000006 RCX: ffffffff86be3b58
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000004
RBP: ffff88806991f780 R08: ffff88809dbd23c0 R09: 0000000000000005
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: ffff88808e915c20 R14: ffff88809813ca20 R15: 0000000000000000
xfrm_policy_inexact_insert+0x155/0xda0 net/xfrm/xfrm_policy.c:1195
xfrm_hash_rebuild+0xea2/0x12c0 net/xfrm/xfrm_policy.c:1317
process_one_work+0xd0c/0x1ce0 kernel/workqueue.c:2153
worker_thread+0x143/0x14a0 kernel/workqueue.c:2296
kthread+0x357/0x430 kernel/kthread.c:246
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352