rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2874 jiffies s: 1597 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4700 Comm: syz.2.107 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x60/0x120 kernel/locking/spinlock.c:194
Code: 4a 8c 48 c7 44 24 10 a0 6c 36 8a 49 89 e7 49 c1 ef 03 48 b8 f1 f1 f1 f1 f8 f3 f3 f3 49 bc 00 00 00 00 00 fc ff df 4b 89 04 27 <48> 83 c7 18 48 8b 75 08 e8 73 55 2e f7 4c 89 f7 e8 bb 1d 2f f7 f7
RSP: 0018:ffffc900001dffe0 EFLAGS: 00000806
RAX: f3f3f3f8f1f1f1f1 RBX: 0000000000000806 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000806 RDI: ffffffff96e7df38
RBP: ffffc900001e0078 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200003bfec R12: dffffc0000000000
R13: ffff88807d9dfc08 R14: ffffffff96e7df38 R15: 1ffff9200003bffc
FS:  00007f2378b766c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fa21ff8 CR3: 000000002edde000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 debug_object_activate+0x2f8/0x4f0 lib/debugobjects.c:716
 debug_hrtimer_activate kernel/time/hrtimer.c:448 [inline]
 debug_activate kernel/time/hrtimer.c:503 [inline]
 enqueue_hrtimer+0x30/0x3f0 kernel/time/hrtimer.c:1105
 __run_hrtimer kernel/time/hrtimer.c:1764 [inline]
 __hrtimer_run_queues+0x69a/0xd70 kernel/time/hrtimer.c:1811
 hrtimer_interrupt+0x3c5/0x9c0 kernel/time/hrtimer.c:1873
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x153/0x5a0 arch/x86/kernel/apic/apic.c:1124
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1118
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:ip6t_do_table+0x173/0x14d0 net/ipv6/netfilter/ip6_tables.c:280
Code: 10 48 85 c0 48 0f 45 c8 48 89 4c 24 60 4c 89 b4 24 60 01 00 00 48 8b 44 24 58 48 8d 58 10 48 89 d8 48 c1 e8 03 42 0f b6 04 28 <84> c0 0f 85 4e 12 00 00 8b 1b bf 20 00 00 00 4c 8b 7c 24 10 44 89
RSP: 0018:ffffc900001e04c0 EFLAGS: 00000a02
RAX: 0000000000000000 RBX: ffff88802eb78c90 RCX: ffff888058442000
RDX: 0000000000000020 RSI: 0000000000000000 RDI: ffffc900001e0630
RBP: ffffc900001e06c0 R08: ffffc900001e062f R09: ffffc900001e0610
R10: dffffc0000000000 R11: fffff5200003c0c6 R12: 0000000000000001
R13: dffffc0000000000 R14: ffffc900001e0780 R15: ffffc900001e0610
 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
 nf_hook_slow+0xb9/0x200 net/netfilter/core.c:614
 nf_hook+0x224/0x390 include/linux/netfilter.h:257
 NF_HOOK_COND include/linux/netfilter.h:290 [inline]
 ip6_output+0x26e/0x3b0 net/ipv6/ip6_output.c:237
 dst_output include/net/dst.h:453 [inline]
 NF_HOOK include/linux/netfilter.h:302 [inline]
 ndisc_send_skb+0xbf1/0x14e0 net/ipv6/ndisc.c:513
 addrconf_rs_timer+0x2d1/0x630 net/ipv6/addrconf.c:3979
 call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x53e/0x800 kernel/time/timer.c:2023
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x2a1/0x930 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__schedule+0xe4/0x40e0 kernel/sched/core.c:6453
Code: f9 64 8c 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 1d ae 9e f7 4c 8b 2b 49 8d 9d 18 b5 03 00 48 89 d8 48 c1 e8 03 <48> 89 84 24 a0 00 00 00 42 80 3c 38 00 74 08 48 89 df e8 f5 ad 9e
RSP: 0018:ffffc900054173c0 EFLAGS: 00000a06
RAX: 1ffff110171e76a3 RBX: ffff8880b8f3b518 RCX: 0000000000000000
RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffffc900054174f0
RBP: ffffc90005417550 R08: ffffc900054174ef R09: ffffc900054174e0
R10: dffffc0000000000 R11: fffff52000a82e9e R12: ffffc900054174e0
R13: ffff8880b8f00000 R14: 0000000000000001 R15: dffffc0000000000
 preempt_schedule_common+0x82/0xd0 kernel/sched/core.c:6731
 preempt_schedule+0xbc/0xd0 kernel/sched/core.c:6755
 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
 unwind_next_frame+0x1892/0x20b0 arch/x86/kernel/unwind_orc.c:629
 arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
 save_stack+0x121/0x230 mm/page_owner.c:127
 __reset_page_owner+0x51/0x1a0 mm/page_owner.c:148
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1459 [inline]
 free_pcp_prepare mm/page_alloc.c:1509 [inline]
 free_unref_page_prepare+0x8b4/0x9a0 mm/page_alloc.c:3384
 free_unref_page+0x2e/0x3f0 mm/page_alloc.c:3479
 free_slab mm/slub.c:2036 [inline]
 discard_slab mm/slub.c:2042 [inline]
 __unfreeze_partials+0x1a5/0x200 mm/slub.c:2591
 put_cpu_partial+0x17c/0x250 mm/slub.c:2667
 qlink_free mm/kasan/quarantine.c:168 [inline]
 qlist_free_all+0x76/0xe0 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x144/0x160 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x1e/0x80 mm/kasan/common.c:306
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook+0x4b/0x480 mm/slab.h:737
 slab_alloc_node mm/slub.c:3359 [inline]
 kmem_cache_alloc_node+0x14d/0x320 mm/slub.c:3404
 perf_event_alloc+0x154/0x21b0 kernel/events/core.c:11838
 __do_sys_perf_event_open kernel/events/core.c:12486 [inline]
 __se_sys_perf_event_open+0x6fd/0x1ec0 kernel/events/core.c:12378
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f2377d9aeb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2378b76028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f2378015fa0 RCX: 00007f2377d9aeb9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000100
RBP: 00007f2377e08c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2378016038 R14: 00007f2378015fa0 R15: 00007ffd002a2cf8
 </TASK>