rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (1 ticks this GP) idle=25a/1/0x4000000000000002 softirq=282053/282053 fqs=0 
	(t=11047 jiffies g=389913 q=288)
NMI backtrace for cpu 1
CPU: 1 PID: 5138 Comm: kworker/1:1 Not tainted 5.4.0-syzkaller #0
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+0x197/0x210 lib/dump_stack.c:118
 nmi_cpu_backtrace.cold+0x70/0xb2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x23b/0x28b 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_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:2827 [inline]
 rcu_sched_clock_irq.cold+0x509/0xc02 kernel/rcu/tree.c:2271
 update_process_times+0x2d/0x70 kernel/time/timer.c:1726
 tick_sched_handle+0xa2/0x190 kernel/time/tick-sched.c:167
 tick_sched_timer+0x53/0x140 kernel/time/tick-sched.c:1310
 __run_hrtimer kernel/time/hrtimer.c:1514 [inline]
 __hrtimer_run_queues+0x364/0xe40 kernel/time/hrtimer.c:1576
 hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1638
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline]
 smp_apic_timer_interrupt+0x160/0x610 arch/x86/kernel/apic/apic.c:1135
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:preempt_schedule_irq+0xab/0x160 kernel/sched/core.c:4338
Code: 00 00 e8 d8 18 96 f9 e8 43 f5 bf f9 4c 89 f0 48 c1 e8 03 80 3c 18 00 75 7d 48 83 3d 96 c1 98 01 00 74 6f fb 66 0f 1f 44 00 00 <bf> 01 00 00 00 e8 0b d2 ff ff 48 c7 c0 60 34 53 89 48 c1 e8 03 80
RSP: 0018:ffff88809de1fb08 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff12a668d RBX: dffffc0000000000 RCX: 0000000000000006
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888096b68994
RBP: ffff88809de1fb28 R08: 1ffffffff15d2fa1 R09: fffffbfff15d2fa2
R10: fffffbfff15d2fa1 R11: ffffffff8ae97d0f R12: ffffed1012d6d020
R13: ffff888096b68100 R14: ffffffff89533468 R15: 0000000000000000
 retint_kernel+0x1b/0x2b
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:752 [inline]
RIP: 0010:queue_delayed_work_on+0x12a/0x210 kernel/workqueue.c:1673
Code: 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 d8 00 00 00 48 83 3d 7e 04 06 08 00 0f 84 9a 00 00 00 e8 3b ae 27 00 48 89 df 57 9d <0f> 1f 44 00 00 e8 2c ae 27 00 44 89 f8 48 83 c4 10 5b 41 5c 41 5d
RSP: 0018:ffff88809de1fbe0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff02
RAX: ffff888096b68100 RBX: 0000000000000293 RCX: 0000000000000006
RDX: 0000000000000000 RSI: ffffffff814d2fe5 RDI: 0000000000000293
RBP: ffff88809de1fc18 R08: 1ffffffff15d2fa1 R09: fffffbfff15d2fa2
R10: fffffbfff15d2fa1 R11: ffffffff8ae97d0f R12: 0000000000000200
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
 queue_delayed_work include/linux/workqueue.h:509 [inline]
 srcu_reschedule kernel/rcu/srcutree.c:1225 [inline]
 srcu_reschedule+0xd7/0x130 kernel/rcu/srcutree.c:1208
 process_srcu+0x125/0xe10 kernel/rcu/srcutree.c:1238
 process_one_work+0x9af/0x1740 kernel/workqueue.c:2264
 worker_thread+0x98/0xe40 kernel/workqueue.c:2410
 kthread+0x361/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352