rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (8 ticks this GP) idle=269/1/0x4000000000000002 softirq=37501/37501 fqs=5240 
	(detected by 1, t=10502 jiffies, g=49237, q=1796)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 15917 Comm: syz.2.3373 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:13 [inline]
RIP: 0010:lock_acquire+0xc0/0x400 kernel/locking/lockdep.c:5708
Code: 08 0f 83 a3 01 00 00 44 89 f0 c1 e8 06 48 8d 3c c5 28 28 6b 8e be 08 00 00 00 e8 db 7a 61 00 44 89 f0 48 0f a3 05 08 39 0e 0d <73> 0d e8 99 d4 07 00 84 c0 0f 84 2e 02 00 00 48 c7 c0 c4 5b 6b 8e
RSP: 0018:ffffc90000007160 EFLAGS: 00000057
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff815cef15
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e6b2828
RBP: ffffc90000007278 R08: ffffffff8e6b282f R09: 1ffffffff1cd6505
R10: dffffc0000000000 R11: fffffbfff1cd6506 R12: 1ffff92000000e38
R13: ffffffff8d11efa0 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f683393e6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c305d8b CR3: 0000000060a20000 CR4: 00000000003506f0
DR0: 0000200000000a40 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:313
 rcu_read_lock include/linux/rcupdate.h:740 [inline]
 __perf_event_output kernel/events/core.c:7810 [inline]
 perf_event_output_forward+0xbc/0x2e0 kernel/events/core.c:7832
 __perf_event_overflow+0x35f/0x550 kernel/events/core.c:9525
 perf_swevent_overflow kernel/events/core.c:9601 [inline]
 perf_swevent_event+0x4b8/0x540 kernel/events/core.c:9639
 perf_tp_event+0x324/0xbe0 kernel/events/core.c:10057
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10031
 perf_trace_preemptirq_template+0x2aa/0x360 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0x108/0x180 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x7f/0x4a0 kernel/rcu/tree_plugin.h:674
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 82 fc 9c 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc90000007940 EFLAGS: 00000206
RAX: fe3391e3a05e3000 RBX: 1ffff92000000f2c RCX: fe3391e3a05e3000
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a4c00
RBP: ffffc90000007a20 R08: ffffffff910151c7 R09: 1ffffffff2202a38
R10: dffffc0000000000 R11: fffffbfff2202a39 R12: ffffffff8d123400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:772 [inline]
 ipv6_get_lladdr+0x333/0x3b0 net/ipv6/addrconf.c:1900
 addrconf_rs_timer+0x25f/0x640 net/ipv6/addrconf.c:3973
 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:preempt_schedule_irq+0xb6/0x160 kernel/sched/core.c:6799
Code: 00 00 43 c6 44 37 04 f8 74 0b 0f 0b 48 f7 03 08 00 00 00 74 7f bf 01 00 00 00 e8 35 f4 87 f7 e8 b0 eb b4 f7 fb bf 01 00 00 00 <e8> d5 b5 ff ff 43 c6 44 37 08 00 48 c7 44 24 40 00 00 00 00 9c 8f
RSP: 0018:ffffc900022578a0 EFLAGS: 00000286
RAX: fe3391e3a05e3000 RBX: 0000000000000000 RCX: fe3391e3a05e3000
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: 0000000000000001
RBP: ffffc90002257940 R08: ffff8880b8e3b30b R09: 1ffff110171c7661
R10: dffffc0000000000 R11: ffffed10171c7662 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff9200044af14
 irqentry_exit+0x63/0x70 kernel/entry/common.c:435
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:__thunk_restore+0x9/0x10 arch/x86/entry/thunk_64.S:45
Code: 41 53 e8 1a e2 c9 08 eb 18 55 48 89 e5 57 56 52 51 50 41 50 41 51 41 52 41 53 e8 a2 e3 c9 08 eb 00 41 5b 41 5a 41 59 41 58 58 <59> 5a 5e 5f 5d c3 00 81 fe c0 01 00 00 0f 87 c4 d1 ff ff 89 f0 ff
RSP: 0018:ffffc90002257a08 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90000dfaf08 RCX: ffffffff89ca60b5
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888020d83b80
RBP: ffffc90002257a28 R08: ffffc90000dfaf0b R09: 1ffff920001bf5e1
R10: dffffc0000000000 R11: fffff520001bf5e2 R12: ffff888020d83b80
R13: dffffc0000000000 R14: ffffc90002257ba8 R15: 1ffff9200044af75
 __raw_spin_unlock include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock+0x36/0x40 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:404 [inline]
 queue_me kernel/futex/core.c:2523 [inline]
 futex_wait_queue_me+0x16e/0x440 kernel/futex/core.c:2849
 futex_wait+0x256/0x680 kernel/futex/core.c:2967
 do_futex+0xdc2/0x12b0 kernel/futex/core.c:4018
 __do_sys_futex kernel/futex/core.c:4095 [inline]
 __se_sys_futex+0x389/0x420 kernel/futex/core.c:4076
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f68356e6559
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:00007f683393e0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f683596dfa8 RCX: 00007f68356e6559
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f683596dfa8
RBP: 00007f683596dfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f683596e038 R14: 00007fffc1500ee0 R15: 00007fffc1500fc8
 </TASK>