rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=26649, q=1701 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 8175 (4294978408-4294970233), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 8175 jiffies! g26649 f0x2 RCU_GP_DOING_FQS(6) ->state=0x0 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:24584 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5396 [inline]
 __schedule+0x16f5/0x4d00 kernel/sched/core.c:6785
 preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:6965
 preempt_schedule+0xae/0xc0 kernel/sched/core.c:6989
 preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock_irqrestore+0xfd/0x110 kernel/locking/spinlock.c:194
 force_qs_rnp kernel/rcu/tree.c:-1 [inline]
 rcu_gp_fqs kernel/rcu/tree.c:-1 [inline]
 rcu_gp_fqs_loop+0x6c2/0x1540 kernel/rcu/tree.c:2076
 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2256
 kthread+0x711/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 7195 Comm: kworker/0:12 Not tainted 6.16.0-rc1-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: wg-crypt-wg0 wg_packet_decrypt_worker
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa8/0x110 kernel/locking/spinlock.c:194
Code: 74 05 e8 cb 5e 5f f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> d3 4a 28 f6 65 8b 05 bc 53 34 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc90000007900 EFLAGS: 00000206
RAX: 8b006f8e0c4aea00 RBX: 0000000000000212 RCX: 8b006f8e0c4aea00
RDX: 0000000000000002 RSI: ffffffff8d9810bf RDI: 0000000000000001
RBP: ffffc90000007990 R08: ffffffff8fa108f7 R09: 1ffffffff1f4211e
R10: dffffc0000000000 R11: fffffbfff1f4211f R12: dffffc0000000000
R13: 000000000000d000 R14: ffff888144730000 R15: 1ffff92000000f20
FS:  0000000000000000(0000) GS:ffff888125c52000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffefe815e40 CR3: 00000000808ae000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 dummy_timer+0x441c/0x4550 drivers/usb/gadget/udc/dummy_hcd.c:-1
 __run_hrtimer kernel/time/hrtimer.c:1761 [inline]
 __hrtimer_run_queues+0x52c/0xc60 kernel/time/hrtimer.c:1825
 hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1842
 handle_softirqs+0x286/0x870 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:decrypt_packet drivers/net/wireguard/receive.c:260 [inline]
RIP: 0010:wg_packet_decrypt_worker+0x3f2/0xd10 drivers/net/wireguard/receive.c:501
Code: 00 00 00 00 00 fc ff df 48 89 84 24 a8 00 00 00 42 80 3c 30 00 74 08 48 89 df e8 09 c5 be fb 48 89 9c 24 b0 00 00 00 4c 8b 3b <49> 8d 5f 08 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8
RSP: 0018:ffffc90004b8f580 EFLAGS: 00000246
RAX: 1ffff110120b32e3 RBX: ffff888090599718 RCX: 0000000000000000
RDX: 0000000000000320 RSI: 0000000000000000 RDI: ffffc90004b8f980
RBP: ffffc90004b8fa70 R08: ffffc90004b8f97f R09: ffffc90004b8f660
R10: dffffc0000000000 R11: fffff52000971f30 R12: ffff888040aea000
R13: 1ffff1100815d410 R14: dffffc0000000000 R15: ffff88808f411a70
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
 kthread+0x711/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>