rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (1 GPs behind) idle=0da/1/0x4000000000000002 softirq=211673/211674 fqs=0 
	(t=10808 jiffies g=262241 q=285)
NMI backtrace for cpu 1
CPU: 1 PID: 25858 Comm: kworker/1:3 Not tainted 5.3.0-rc3+ #72
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: rcu_gp process_srcu
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1d8/0x2f8 lib/dump_stack.c:113
 nmi_cpu_backtrace+0xaf/0x1a0 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x174/0x290 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x10/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x15a/0x220 kernel/rcu/tree_stall.h:254
 print_cpu_stall kernel/rcu/tree_stall.h:455 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:529 [inline]
 rcu_pending kernel/rcu/tree.c:2736 [inline]
 rcu_sched_clock_irq+0xb95/0x16d0 kernel/rcu/tree.c:2183
 update_process_times+0x134/0x190 kernel/time/timer.c:1639
 tick_sched_handle kernel/time/tick-sched.c:167 [inline]
 tick_sched_timer+0x263/0x420 kernel/time/tick-sched.c:1296
 __run_hrtimer kernel/time/hrtimer.c:1389 [inline]
 __hrtimer_run_queues+0x403/0x850 kernel/time/hrtimer.c:1451
 hrtimer_interrupt+0x38c/0xda0 kernel/time/hrtimer.c:1509
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1068 [inline]
 smp_apic_timer_interrupt+0x109/0x280 arch/x86/kernel/apic/apic.c:1093
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830
 </IRQ>
RIP: 0010:preempt_schedule_irq+0xb7/0x140 kernel/sched/core.c:4128
Code: fe f9 43 80 3c 37 00 74 0c 48 c7 c7 90 87 8a 88 e8 3e 1c 32 fa 48 83 3d 06 26 10 01 00 0f 84 82 00 00 00 fb 66 0f 1f 44 00 00 <bf> 01 00 00 00 e8 1f ee ff ff 43 80 3c 34 00 74 0c 48 c7 c7 88 87
RSP: 0018:ffff888096ecfb78 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff117c400 RBX: 0000000000000000 RCX: ffff88805f814480
RDX: 0000000000000000 RSI: ffffffff87800a20 RDI: ffffffff877a616f
RBP: ffff888096ecfb98 R08: ffffffff817905b4 R09: ffffed1015d66a6d
R10: ffffed1015d66a6d R11: 0000000000000000 R12: 1ffffffff11150f1
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffffffff11150f2
 retint_kernel+0x1b/0x2b
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:768 [inline]
RIP: 0010:lock_release+0x4c7/0x780 kernel/locking/lockdep.c:4434
Code: 48 c1 e8 03 80 3c 10 00 74 0c 48 c7 c7 80 87 8a 88 e8 0d 4d 53 00 48 83 3d c5 56 31 07 00 0f 84 8c 02 00 00 48 8b 7d 88 57 9d <0f> 1f 44 00 00 65 48 8b 04 25 28 00 00 00 48 3b 45 d0 0f 85 70 02
RSP: 0018:ffff888096ecfc58 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff02
RAX: 1ffffffff11150f0 RBX: dffffc0000000000 RCX: ffffffff81593497
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: 0000000000000286
RBP: ffff888096ecfcd8 R08: dffffc0000000000 R09: fffffbfff117be6d
R10: fffffbfff117be6d R11: 0000000000000000 R12: ffff88805f814480
R13: ffffffff814db680 R14: ffff88805f814d0c R15: ffff8880aa435ba8
 process_one_work+0x843/0x10e0 kernel/workqueue.c:2276
 worker_thread+0xc01/0x1630 kernel/workqueue.c:2415
 kthread+0x332/0x350 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352