rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=7e24/1/0x4000000000000000 softirq=187508/187508 fqs=5241
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:    18644          0            0
rcu: 	cputime:      175      55928            0   ==> 52490(ms)
rcu: 	(t=10501 jiffies g=260481 q=8647 ncpus=2)
CPU: 0 UID: 0 PID: 29806 Comm: kworker/0:1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Workqueue: events_power_efficient wg_ratelimiter_gc_entries
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:211 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x47/0x80 kernel/locking/spinlock.c:221
Code: f7 e8 dd 8f ba f5 f7 c3 00 02 00 00 74 05 e8 80 da e6 f5 9c 58 a9 00 02 00 00 75 29 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 14 8d ab f5 65 48 8b 05 4c 20 ac 07 48 85 c0 74 18 5b 41 5e e9
RSP: 0018:ffffc90000007e10 EFLAGS: 00000206
RAX: 0000000000000006 RBX: 0000000000000283 RCX: 0000000000000101
RDX: 0000000000000002 RSI: ffffffff8e415ef6 RDI: 0000000000000001
RBP: ffff888033a70138 R08: ffffffff907a627f R09: 1ffffffff20f4c4f
R10: dffffc0000000000 R11: fffffbfff20f4c50 R12: ffff8880b8628280
R13: ffffffff89e023a0 R14: ffff8880b8628280 R15: 1ffff110170c50da
FS:  0000000000000000(0000) GS:ffff888124cc8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000007000 CR3: 000000000eb48000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 __run_hrtimer kernel/time/hrtimer.c:2070 [inline]
 __hrtimer_run_queues+0x2bf/0xa10 kernel/time/hrtimer.c:2131
 hrtimer_run_softirq+0x1e3/0x2e0 kernel/time/hrtimer.c:2148
 handle_softirqs+0x226/0x860 kernel/softirq.c:645
 __do_softirq kernel/softirq.c:679 [inline]
 invoke_softirq kernel/softirq.c:519 [inline]
 __irq_exit_rcu+0xcb/0x220 kernel/softirq.c:758
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:wg_ratelimiter_gc_entries+0x3b2/0x450 drivers/net/wireguard/ratelimiter.c:62
Code: 24 18 74 35 e8 bf 85 1d fb 48 c7 c7 e0 28 aa 8c be 4e 00 00 00 31 d2 e8 fc 2a ec fa 2e 2e 2e 31 c0 49 ff c6 8b 05 0e f0 2b 14 <49> 39 c6 73 11 e8 94 85 1d fb e9 90 fc ff ff e8 8a 85 1d fb eb e1
RSP: 0018:ffffc90006d9fa88 EFLAGS: 00000202
RAX: 0000000000002000 RBX: ffffffff8f996d80 RCX: 0000000000000046
RDX: 0000000000000000 RSI: ffffffff8e69f50c RDI: ffffffff8c6dad80
RBP: dffffc0000000000 R08: ffffffff8f996c43 R09: 1ffffffff1f32d88
R10: dffffc0000000000 R11: fffffbfff1f32d89 R12: ffff888071850b68
R13: ffffffff818fa5fa R14: 000000000000016e R15: 0000000000000000
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560
 kthread+0x38b/0x480 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
sched: DL replenish lagged too much