rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=317/1/0x4000000000000002 softirq=6078/6080 fqs=5249 
	(detected by 1, t=10502 jiffies, g=5513, q=1956)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4326 Comm: syz.1.11 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:deref_stack_reg+0xf8/0x120 arch/x86/kernel/unwind_orc.c:362
Code: 00 00 49 89 c6 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 47 f9 88 00 4c 89 33 b0 01 5b 41 5c 41 5d 41 5e 41 5f 5d <c3> 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 5d ff ff ff 4c 89 ff e8
RSP: 0018:ffffc90000006d98 EFLAGS: 00000046
RAX: 1ffff92000000d01 RBX: ffffc90000006ec0 RCX: 0000000000000001
RDX: ffffc90000006f00 RSI: ffffc90000007e10 RDI: ffffc90000007e10
RBP: ffffc90000006f08 R08: ffffc90000006f1f R09: ffffc90000006f10
R10: dffffc0000000000 R11: fffff52000000de4 R12: 1ffffffff1c0eac7
R13: dffffc0000000000 R14: ffffc90000006f10 R15: ffffffff8e075638
FS:  00007f2d8b4396c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000003a00000000 CR3: 000000007483d000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_next_frame+0x115d/0x1d90 arch/x86/kernel/unwind_orc.c:-1
 perf_callchain_kernel+0x449/0x720 arch/x86/events/core.c:2783
 get_perf_callchain+0x356/0x460 kernel/events/callchain.c:200
 perf_callchain kernel/events/core.c:7606 [inline]
 perf_prepare_sample+0x352/0x1cd0 kernel/events/core.c:7633
 __perf_event_output kernel/events/core.c:7802 [inline]
 perf_event_output_forward+0x185/0x2e0 kernel/events/core.c:7822
 __perf_event_overflow+0x364/0x530 kernel/events/core.c:9515
 perf_tp_event+0x383/0xbf0 kernel/events/core.c:10047
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10021
 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 c2 ef 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:ffffc900000077c0 EFLAGS: 00000206
RAX: e3d10374aef45500 RBX: 1ffff92000000efc RCX: e3d10374aef45500
RDX: dffffc0000000000 RSI: ffffffff8a2b2780 RDI: ffffffff8a79f780
RBP: ffffc900000078a0 R08: ffffffff901d11bf R09: 1ffffffff203a237
R10: dffffc0000000000 R11: fffffbfff203a238 R12: ffffffff8c322f00
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+0xde0/0x1500 net/ipv6/ndisc.c:521
 addrconf_rs_timer+0x2d1/0x630 net/ipv6/addrconf.c:3956
 call_timer_fn+0x17b/0x540 kernel/time/timer.c:1451
 expire_timers kernel/time/timer.c:1496 [inline]
 __run_timers+0x53a/0x7f0 kernel/time/timer.c:1767
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
 handle_softirqs+0x339/0x830 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+0x8e/0xd0 kernel/sched/core.c:6597
Code: 48 b8 04 00 00 00 00 fc ff df c6 04 03 00 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 c6 04 03 f8 75 29 <48> c7 04 24 0e 36 e0 45 4a c7 04 33 00 00 00 00 65 48 8b 04 25 28
RSP: 0018:ffffc9000456fc80 EFLAGS: 00000246
RAX: 1ffff11004d16770 RBX: 1ffff920008adf90 RCX: ffffffff89c42f05
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8880268b3b80
RBP: ffffc9000456fcf8 R08: ffff8880268b3b87 R09: 1ffff11004d16770
R10: dffffc0000000000 R11: ffffed1004d16771 R12: ffff888021e79040
R13: dffffc0000000000 R14: dffffc0000000000 R15: ffff888021e79040
 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
 rcu_read_unlock_sched include/linux/rcupdate.h:855 [inline]
 fd_install+0x371/0x4c0 fs/file.c:603
 __do_sys_perf_event_open kernel/events/core.c:12816 [inline]
 __se_sys_perf_event_open+0x1a1a/0x1bb0 kernel/events/core.c:12387
 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: 0033:0x7f2d8d1ddeb9
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:00007f2d8b439028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f2d8d458fa0 RCX: 00007f2d8d1ddeb9
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 00002000000003c0
RBP: 00007f2d8d24bc1f R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2d8d459038 R14: 00007f2d8d458fa0 R15: 00007ffc11c80b18
 </TASK>