rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10481 ticks this GP) idle=7e3/1/0x4000000000000000 softirq=28972/28972 fqs=3399 
	(t=10500 jiffies g=38341 q=2193)
NMI backtrace for cpu 0
CPU: 0 PID: 14 Comm: ksoftirqd/0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <IRQ>
 dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x3a2/0x3d0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
 rcu_dump_cpu_stacks+0x22d/0x380 kernel/rcu/tree_stall.h:349
 print_cpu_stall+0x31f/0x5f0 kernel/rcu/tree_stall.h:633
 check_cpu_stall kernel/rcu/tree_stall.h:727 [inline]
 rcu_pending kernel/rcu/tree.c:3936 [inline]
 rcu_sched_clock_irq+0x6ec/0x1120 kernel/rcu/tree.c:2619
 update_process_times+0x193/0x200 kernel/time/timer.c:2021
 tick_sched_handle kernel/time/tick-sched.c:254 [inline]
 tick_sched_timer+0x37d/0x560 kernel/time/tick-sched.c:1473
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x4b0/0xb60 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x397/0x8b0 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
 __sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1108
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xbc/0x120 kernel/locking/spinlock.c:194
Code: c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 41 c6 04 07 f8 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> ef 90 88 f7 65 8b 05 60 a8 38 76 85 c0 74 3c 48 c7 04 24 0e 36
RSP: 0018:ffffc90000007940 EFLAGS: 00000206
RAX: dffffc0000000004 RBX: 0000000000000a02 RCX: 7983fb4e02506800
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: 0000000000000001
RBP: ffffc900000079d0 R08: ffffffff901ef157 R09: 1ffffffff203de2a
R10: dffffc0000000000 R11: fffffbfff203de2b R12: dffffc0000000000
R13: ffff8880b90280c0 R14: ffff8880b90280c0 R15: 1ffff92000000f28
 __mod_timer+0x925/0xd20 kernel/time/timer.c:1081
 addrconf_mod_rs_timer+0x51/0xe0 net/ipv6/addrconf.c:328
 addrconf_rs_timer+0x463/0x640 net/ipv6/addrconf.c:3975
 call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648
 expire_timers kernel/time/timer.c:1699 [inline]
 __run_timers+0x56c/0x810 kernel/time/timer.c:1970
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
 handle_softirqs+0x336/0x830 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:kthread_should_stop+0x0/0xe0 kernel/kthread.c:135
Code: 80 e1 07 80 c1 03 38 c1 0f 8c 5c ff ff ff 4c 89 f7 e8 64 30 6e 00 e9 4f ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 <55> 41 57 41 56 53 49 bf 00 00 00 00 00 fc ff df e8 2b 08 29 00 65
RSP: 0018:ffffc90000d37e70 EFLAGS: 00000246
RAX: 1ffff11027fc4655 RBX: 1ffff11027fc46a8 RCX: ffffffff962f5f00
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff81516be6
RBP: ffffffff8c1c47c0 R08: ffff88813fe21ddb R09: 1ffff11027fc43bb
R10: dffffc0000000000 R11: ffffed1027fc43bc R12: ffff88813fe21dd8
R13: ffff88813fe23540 R14: dffffc0000000000 R15: ffffffff81496120
 smpboot_thread_fn+0x10b/0x990 kernel/smpboot.c:114
 kthread+0x42e/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>