rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (5805 ticks this GP) idle=c12/1/0x4000000000000002 softirq=134832/134832 fqs=38 
	(t=10500 jiffies g=192061 q=5979)
rcu: rcu_preempt kthread starved for 1085 jiffies! g192061 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
rcu_preempt     I28728    10      2 0x80004000
Call Trace:
 context_switch kernel/sched/core.c:3430 [inline]
 __schedule+0x7d3/0xc40 kernel/sched/core.c:4156
NMI backtrace for cpu 0
CPU: 0 PID: 3841 Comm: kworker/0:9 Not tainted 5.7.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: wg-crypt-wg2 wg_packet_tx_worker
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1e9/0x30e lib/dump_stack.c:118
 nmi_cpu_backtrace+0x9f/0x180 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x199/0x2a0 kernel/rcu/tree_stall.h:320
 print_cpu_stall kernel/rcu/tree_stall.h:553 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:627 [inline]
 rcu_pending kernel/rcu/tree.c:3471 [inline]
 rcu_sched_clock_irq+0x1a3f/0x1fe0 kernel/rcu/tree.c:2486
 update_process_times+0x12c/0x180 kernel/time/timer.c:1726
 tick_sched_handle kernel/time/tick-sched.c:176 [inline]
 tick_sched_timer+0x254/0x410 kernel/time/tick-sched.c:1320
 __run_hrtimer kernel/time/hrtimer.c:1520 [inline]
 __hrtimer_run_queues+0x42d/0x930 kernel/time/hrtimer.c:1584
 hrtimer_interrupt+0x373/0xd60 kernel/time/hrtimer.c:1646
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline]
 smp_apic_timer_interrupt+0x109/0x280 arch/x86/kernel/apic/apic.c:1105
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:163 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:218 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0xd/0xa0 kernel/kcov.c:284
Code: 34 01 4c 89 44 f9 18 49 ff c2 4c 89 11 c3 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 4c 8b 04 24 65 48 8b 14 25 40 1e 02 00 <65> 8b 05 f8 76 8d 7e a9 00 01 ff 00 74 10 a9 00 01 00 00 74 6e 83
RSP: 0018:ffffc90007a1f5b0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: ffff8880214dbe00 RBX: 00000000a787323c RCX: ffff888099542080
RDX: ffff888099542080 RSI: 00000000a787323c RDI: 0000000000000001
RBP: 1ffff1100429b7d4 R08: ffffffff86911b68 R09: ffffffff867f3c5b
R10: 0000000000000002 R11: ffff888099542080 R12: ffff8880a7799b08
R13: ffff8880a7799af8 R14: dffffc0000000000 R15: ffff8880214dbea0
 fq_codel_dequeue+0x1f8/0x3b30 net/sched/sch_fq_codel.c:297
 dequeue_skb net/sched/sch_generic.c:263 [inline]
 qdisc_restart net/sched/sch_generic.c:366 [inline]
 __qdisc_run+0x211/0x1b00 net/sched/sch_generic.c:384
 __dev_xmit_skb net/core/dev.c:3784 [inline]
 __dev_queue_xmit+0x1225/0x28a0 net/core/dev.c:4089
 neigh_hh_output include/net/neighbour.h:499 [inline]
 neigh_output include/net/neighbour.h:508 [inline]
 ip_finish_output2+0xe58/0x18e0 net/ipv4/ip_output.c:228
 iptunnel_xmit+0x470/0x7e0 net/ipv4/ip_tunnel_core.c:81
 udp_tunnel_xmit_skb+0x1c8/0x2d0 net/ipv4/udp_tunnel.c:190
 send4+0x870/0xe30 drivers/net/wireguard/socket.c:85
 wg_socket_send_skb_to_peer+0xd1/0x1d0 drivers/net/wireguard/socket.c:174
 wg_packet_create_data_done drivers/net/wireguard/send.c:252 [inline]
 wg_packet_tx_worker+0x31d/0xcc0 drivers/net/wireguard/send.c:280
 process_one_work+0x76e/0xfd0 kernel/workqueue.c:2268
 worker_thread+0xa7f/0x1450 kernel/workqueue.c:2414
 kthread+0x353/0x380 kernel/kthread.c:268
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351