rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10500 ticks this GP) idle=a50c/1/0x4000000000000000 softirq=32229/32231 fqs=5225
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1380964          0            0
rcu: 	cputime:    18878      33611           64   ==> 52500(ms)
rcu: 	(t=10502 jiffies g=40729 q=4169 ncpus=2)
CPU: 1 PID: 10716 Comm: syz.2.1210 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:__read_once_word_nocheck+0x0/0x10 include/asm-generic/rwonce.h:66
Code: a4 00 e9 b0 fd ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 96 fc ff ff 4c 89 e7 e8 2d 4f a4 00 e9 89 fc ff ff 0f 1f 84 00 00 00 00 00 <53> 48 89 fb e8 27 a7 4b 00 48 8b 03 5b c3 cc cc f3 0f 1e fa 55 48
RSP: 0018:ffffc900001eff70 EFLAGS: 00000246
RAX: ffffffff813bc2f2 RBX: ffffc900001e9000 RCX: ffff888053cc3c00
RDX: 0000000000000100 RSI: 0000000000000002 RDI: ffffc900001f0e38
RBP: ffffc900001f0098 R08: ffff888053cc3c00 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000100 R12: ffffc900001f0e20
R13: ffffc900001f0048 R14: ffffc900001f0058 R15: dffffc0000000000
FS:  00007f9910fde6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 000000006376d000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 deref_stack_reg arch/x86/kernel/unwind_orc.c:406 [inline]
 unwind_next_frame+0x15d9/0x2990 arch/x86/kernel/unwind_orc.c:585
 arch_stack_walk+0x144/0x190 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122
 kasan_save_stack+0x3e/0x60 mm/kasan/common.c:46
 __kasan_record_aux_stack+0xaf/0xc0 mm/kasan/generic.c:492
 __call_rcu_common kernel/rcu/tree.c:2721 [inline]
 call_rcu+0x153/0x900 kernel/rcu/tree.c:2837
 refdst_drop include/net/dst.h:273 [inline]
 skb_dst_drop include/net/dst.h:285 [inline]
 __dev_queue_xmit+0x7da/0x37e0 net/core/dev.c:4429
 neigh_output include/net/neighbour.h:547 [inline]
 ip6_finish_output2+0xf7a/0x1690 net/ipv6/ip6_output.c:143
 dst_output include/net/dst.h:470 [inline]
 NF_HOOK include/linux/netfilter.h:304 [inline]
 ndisc_send_skb+0xbb9/0x1480 net/ipv6/ndisc.c:513
 addrconf_rs_timer+0x36b/0x640 net/ipv6/addrconf.c:4043
 call_timer_fn+0x189/0x540 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x570/0x810 kernel/time/timer.c:2023
 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x27d/0x820 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:generic_exec_single+0x477/0x4e0 kernel/smp.c:418
Code: 75 11 e8 2c 10 0b 00 48 85 db 75 16 e8 22 10 0b 00 eb 15 e8 1b 10 0b 00 e8 76 2a 16 09 48 85 db 74 ea e8 0c 10 0b 00 fb 31 c0 <48> c7 44 24 20 0e 36 e0 45 4b c7 04 2c 00 00 00 00 43 c7 44 2c 08
RSP: 0018:ffffc90003427a00 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000200 RCX: 0000000000080000
RDX: ffffc9000d314000 RSI: 0000000000001bf8 RDI: 0000000000001bf9
RBP: ffffc90003427ad0 R08: ffffffff911f05ff R09: 1ffffffff223e0bf
R10: dffffc0000000000 R11: fffffbfff223e0c0 R12: 1ffff92000684f44
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92000684f65
 smp_call_function_single+0x36d/0x5a0 kernel/smp.c:647
 task_function_call kernel/events/core.c:120 [inline]
 perf_install_in_context+0x5bb/0x920 kernel/events/core.c:2958
 __do_sys_perf_event_open kernel/events/core.c:12967 [inline]
 __se_sys_perf_event_open+0x1818/0x1d40 kernel/events/core.c:12609
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f991019e199
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:00007f9910fde028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f9910425fa0 RCX: 00007f991019e199
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000480
RBP: 00007f99102358e0 R08: 000000000000000a R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9910426038 R14: 00007f9910425fa0 R15: 00007ffd65b66ed8
 </TASK>