rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10500 ticks this GP) idle=de3/1/0x4000000000000000 softirq=50884/50884 fqs=3291 
	(t=10500 jiffies g=65141 q=59451)
NMI backtrace for cpu 0
CPU: 0 PID: 24047 Comm: syz.3.8940 Not tainted 5.15.178-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
 rcu_dump_cpu_stacks+0x223/0x390 kernel/rcu/tree_stall.h:349
 print_cpu_stall+0x320/0x600 kernel/rcu/tree_stall.h:633
 check_cpu_stall kernel/rcu/tree_stall.h:727 [inline]
 rcu_pending kernel/rcu/tree.c:3932 [inline]
 rcu_sched_clock_irq+0x8d9/0x1150 kernel/rcu/tree.c:2619
 update_process_times+0x196/0x200 kernel/time/timer.c:1818
 tick_sched_handle kernel/time/tick-sched.c:254 [inline]
 tick_sched_timer+0x386/0x550 kernel/time/tick-sched.c:1473
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
 __sysvec_apic_timer_interrupt+0x13b/0x4b0 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+0xd4/0x130 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 42 80 81 f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> e7 9e 0e f7 65 8b 05 f8 81 b9 75 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0018:ffffc900000077c0 EFLAGS: 00000206
RAX: d6babaa2a6bff200 RBX: 1ffff92000000efc RCX: ffffffff81633dd8
RDX: dffffc0000000000 RSI: ffffffff8aab2b80 RDI: 0000000000000001
RBP: ffffc90000007858 R08: dffffc0000000000 R09: fffffbfff2131844
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff92000000ef8 R14: ffffc900000077e0 R15: 0000000000000246
 spin_unlock_irqrestore include/linux/spinlock.h:418 [inline]
 get_partial_node+0x223/0x240 mm/slub.c:2152
 get_partial mm/slub.c:2232 [inline]
 ___slab_alloc+0x47a/0xe10 mm/slub.c:3003
 __slab_alloc mm/slub.c:3095 [inline]
 slab_alloc_node mm/slub.c:3186 [inline]
 kmem_cache_alloc_node+0x1ba/0x2c0 mm/slub.c:3256
 __alloc_skb+0xdd/0x590 net/core/skbuff.c:415
 alloc_skb include/linux/skbuff.h:1162 [inline]
 ndisc_alloc_skb+0xee/0x2c0 net/ipv6/ndisc.c:423
 ndisc_send_rs+0x269/0x6a0 net/ipv6/ndisc.c:689
 addrconf_rs_timer+0x357/0x610 net/ipv6/addrconf.c:3959
 call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451
 expire_timers kernel/time/timer.c:1496 [inline]
 __run_timers+0x67c/0x890 kernel/time/timer.c:1767
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558
 __do_softirq kernel/softirq.c:592 [inline]
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:641
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:653
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0x9d/0xc0 arch/x86/kernel/irq_work.c:17
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:preempt_schedule_irq+0xf2/0x1c0 kernel/sched/core.c:6777
Code: 89 f5 49 c1 ed 03 eb 0d 48 f7 03 08 00 00 00 0f 84 97 00 00 00 bf 01 00 00 00 e8 f9 d4 0f f7 e8 b4 4d 3f f7 fb bf 01 00 00 00 <e8> a9 b3 ff ff 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 19 b8 82 f7 48
RSP: 0018:ffffc90003abfdc0 EFLAGS: 00000282
RAX: d6babaa2a6bff200 RBX: 1ffff92000757fc0 RCX: ffffffff96a92f03
RDX: dffffc0000000000 RSI: ffffffff8aab2b80 RDI: 0000000000000001
RBP: ffffc90003abfe70 R08: ffffffff818705c8 R09: ffffed10171c765a
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000757fb8
R13: 1ffff92000757fbc R14: ffffc90003abfde0 R15: dffffc0000000000
 irqentry_exit+0x53/0x80 kernel/entry/common.c:432
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:do_syscall_x64 arch/x86/entry/common.c:48 [inline]
RIP: 0010:do_syscall_64+0x1e/0xb0 arch/x86/entry/common.c:80
Code: 00 00 00 00 0f 1f 44 00 00 c3 cc cc 55 48 89 e5 41 56 53 48 83 e4 f0 48 89 e3 49 89 fe 66 90 48 63 f6 4c 89 f7 e8 b2 4e 00 00 <3d> c0 01 00 00 77 2b 89 c1 48 81 f9 c1 01 00 00 48 19 f6 21 c6 4c
RSP: 0018:ffffc90003abff30 EFLAGS: 00000246
RAX: 00000000000000ca RBX: ffffc90003abff30 RCX: ffffffff96a92f03
RDX: dffffc0000000000 RSI: ffffffff8aab2b80 RDI: ffffffff8af9f2c0
RBP: ffffc90003abff48 R08: ffffffff818705c8 R09: ffffed10171c765a
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000000 R14: ffffc90003abff58 R15: 0000000000000000
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f2d740a5de9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2d733170e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f2d742befa8 RCX: 00007f2d740a5de9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f2d742befac
RBP: 00007f2d742befa0 R08: 0000000000000010 R09: 0000000000000000
R10: 0000000000000004 R11: 0000000000000246 R12: 00007f2d742befac
R13: 0000000000000000 R14: 00007ffdf406d440 R15: 00007ffdf406d528
 </TASK>