rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=f1d/1/0x4000000000000002 softirq=7840/7841 fqs=2099 
	(detected by 1, t=10502 jiffies, g=9237, q=2935)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4633 Comm: syz.4.123 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:perf_callchain_kernel+0x352/0x760 arch/x86/events/core.c:2784
Code: 48 c1 e9 03 48 89 4c 24 38 48 89 54 24 18 48 c1 ea 03 48 89 54 24 30 49 c1 ec 03 4c 89 64 24 28 49 bc 00 00 00 00 00 fc ff df <4c> 89 ef e8 f6 24 34 00 49 89 c6 31 ff 48 89 c6 e8 49 1b 78 00 4d
RSP: 0018:ffffc90000006e20 EFLAGS: 00000046
RAX: ffffffff8100f950 RBX: ffffc90000006e80 RCX: ffff888079f28000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 00000000ffffffff
RBP: ffffc90000006f50 R08: ffffc90003e7ff58 R09: ffffc90000006ed0
R10: dffffc0000000000 R11: fffff52000000ddc R12: dffffc0000000000
R13: ffffc90000006e80 R14: ffffffff89e000ca R15: 1ffff92000000df5
FS:  0000555590f35500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000004d6e1 CR3: 000000007315f000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 get_perf_callchain+0x356/0x460 kernel/events/callchain.c:200
 perf_callchain kernel/events/core.c:7616 [inline]
 perf_prepare_sample+0x352/0x1cb0 kernel/events/core.c:7643
 __perf_event_output kernel/events/core.c:7812 [inline]
 perf_event_output_forward+0x185/0x2e0 kernel/events/core.c:7832
 __perf_event_overflow+0x35f/0x550 kernel/events/core.c:9525
 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 f2 0f 9d 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:ffffc90000007780 EFLAGS: 00000206
RAX: 946aa16ac4ce5d00 RBX: 1ffff92000000ef4 RCX: 946aa16ac4ce5d00
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a4540
RBP: ffffc90000007860 R08: ffffffff901ef1e7 R09: 1ffffffff203de3c
R10: dffffc0000000000 R11: fffffbfff203de3d R12: ffffffff8c323400
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]
 ndisc_send_skb+0xd3b/0x1410 net/ipv6/ndisc.c:521
 addrconf_rs_timer+0x367/0x640 net/ipv6/addrconf.c:3966
 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:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:debug_spin_unlock kernel/locking/spinlock_debug.c:101 [inline]
RIP: 0010:do_raw_spin_unlock+0x81/0x230 kernel/locking/spinlock_debug.c:140
Code: 0f 85 6f 01 00 00 83 3b 00 0f 84 e5 00 00 00 4c 8d 73 10 4d 89 f5 49 c1 ed 03 43 80 7c 25 00 00 74 08 4c 89 f7 e8 7f fa 5f 00 <65> 48 8b 05 c7 2c a4 7e 49 39 06 0f 85 da 00 00 00 4c 8d 7b 08 4c
RSP: 0018:ffffc90003e7fd98 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff88802be8adc0 RCX: ffffffff815e42b9
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88802be8adc0
RBP: 1ffff11003f6de03 R08: ffff88802be8adc3 R09: 1ffff110057d15b8
R10: dffffc0000000000 R11: ffffed10057d15b9 R12: dffffc0000000000
R13: 1ffff110057d15ba R14: ffff88802be8add0 R15: ffff888023219b80
 __raw_spin_unlock include/linux/spinlock_api_smp.h:151 [inline]
 _raw_spin_unlock+0x1a/0x40 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:404 [inline]
 pick_file+0x18c/0x220 fs/file.c:639
 __range_close fs/file.c:689 [inline]
 __close_range+0x214/0x510 fs/file.c:747
 __do_sys_close_range fs/open.c:1410 [inline]
 __se_sys_close_range fs/open.c:1407 [inline]
 __x64_sys_close_range+0x76/0x80 fs/open.c:1407
 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: 0033:0x7fe1abf34159
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:00007ffd384a8738 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: ffffffffffffffda RBX: 00007ffd384a8820 RCX: 00007fe1abf34159
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 000000000004d6e1 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b33c20000 R11: 0000000000000246 R12: 00007ffd384a8860
R13: 00007fe1ac1bbfac R14: 000000000004d723 R15: 00007fe1ac1bbfa0
 </TASK>