rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 1, t=10502 jiffies, g=15381, q=695 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10500 (4294960990-4294950490), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10500 jiffies! g15381 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:25648 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5328 [inline]
 __schedule+0x184f/0x4c30 kernel/sched/core.c:6690
 __schedule_loop kernel/sched/core.c:6767 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6782
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2615
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 6718 Comm: kworker/1:6 Not tainted 6.12.0-rc6-syzkaller-00272-gda4373fbcf00 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Workqueue: events_power_efficient neigh_periodic_work
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 be 7a 2d f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 93 0a 92 f5 65 8b 05 04 b2 32 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc90000a188e0 EFLAGS: 00000206
RAX: a83126ebd1a9e300 RBX: 1ffff92000143120 RCX: ffffffff8170bffa
RDX: dffffc0000000000 RSI: ffffffff8c0acac0 RDI: 0000000000000001
RBP: ffffc90000a18970 R08: ffffffff942cd8bf R09: 1ffffffff2859b17
R10: dffffc0000000000 R11: fffffbfff2859b18 R12: dffffc0000000000
R13: 1ffff9200014311c R14: ffffc90000a18900 R15: 0000000000000246
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb3ef1b0000 CR3: 000000003078a000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 dummy_timer+0x44d6/0x4620
 __run_hrtimer kernel/time/hrtimer.c:1691 [inline]
 __hrtimer_run_queues+0x59d/0xd50 kernel/time/hrtimer.c:1755
 hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1772
 handle_softirqs+0x2c7/0x980 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__might_resched+0x92/0x780 kernel/sched/core.c:8615
Code: f1 f1 f1 f1 00 f2 f2 f2 49 89 04 0f 41 c7 44 0f 09 f2 f2 f2 00 66 41 c7 44 0f 0d f3 f3 41 c6 44 0f 0f f3 e8 60 99 62 0a 85 c0 <74> 46 48 c7 c7 00 7e 93 8e be ff ff ff ff e8 6b 95 62 0a 85 c0 74
RSP: 0018:ffffc900040a7a00 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffffff8fde8180 RCX: ffff8880302c8000
RDX: 0000000000000000 RSI: 00000000000003fc RDI: ffffffff8d0e23a0
RBP: ffffc900040a7b20 R08: ffffffff942cd8bf R09: 1ffffffff2859b17
R10: dffffc0000000000 R11: fffffbfff2859b18 R12: 0000000000000000
R13: dffffc0000000000 R14: 00000000000003fc R15: 1ffff92000814f48
 neigh_periodic_work+0xb48/0xd50 net/core/neighbour.c:1020
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa65/0x1850 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>