rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=4a74/1/0x4000000000000000 softirq=156507/156508 fqs=4512
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1318775          0            0
rcu: 	cputime:    18522      33966           66   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=206409 q=720 ncpus=2)
CPU: 1 PID: 1576 Comm: syz.4.8596 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:percpu_counter_add_batch+0x25c/0x2a0 lib/percpu_counter.c:103
Code: 4d 85 ff 75 16 e8 04 4e 27 fd eb 15 e8 fd 4d 27 fd e8 d8 51 37 06 4d 85 ff 74 ea e8 ee 4d 27 fd fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 04 26 00 00 00 00 43 c7 44 26 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc900001f0720 EFLAGS: 00000246
RAX: ffffffff846090b2 RBX: 0000000000000000 RCX: ffff888060c43c00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900001f0820 R08: ffffffff922235ef R09: 1ffffffff24446bd
R10: dffffc0000000000 R11: fffffbfff24446be R12: dffffc0000000000
R13: 0000000000000000 R14: 1ffff9200003e0ec R15: 0000000000000200
FS:  00007fab3df526c0(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 000000002fd23000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000002140
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 dst_alloc+0x12e/0x170 net/core/dst.c:94
 ip6_dst_alloc net/ipv6/route.c:344 [inline]
 icmp6_dst_alloc+0x7c/0x400 net/ipv6/route.c:3324
 ndisc_send_skb+0x422/0x1480 net/ipv6/ndisc.c:493
 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:finish_task_switch+0x267/0x8f0 kernel/sched/core.c:5267
Code: 39 09 85 c0 0f 84 30 01 00 00 48 85 db 0f 85 4f 01 00 00 0f 1f 44 00 00 4c 89 e7 e8 33 7d 43 09 e8 3e 3e 30 00 fb 4c 8b 65 b8 <49> 8d bc 24 00 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0
RSP: 0018:ffffc900105b7760 EFLAGS: 00000286
RAX: 59bad5dbaf5bb000 RBX: 0000000000000000 RCX: 59bad5dbaf5bb000
RDX: dffffc0000000000 RSI: ffffffff8aead140 RDI: ffffffff8b3c5260
RBP: ffffc900105b77b0 R08: ffffffff92223607 R09: 1ffffffff24446c0
R10: dffffc0000000000 R11: fffffbfff24446c1 R12: ffff888060c43c00
R13: 1ffff110171a79a1 R14: dffffc0000000000 R15: ffff8880b8d3cd08
 context_switch kernel/sched/core.c:5396 [inline]
 __schedule+0x1577/0x4720 kernel/sched/core.c:6722
 preempt_schedule_common+0x82/0xc0 kernel/sched/core.c:6889
 preempt_schedule+0xc0/0xd0 kernel/sched/core.c:6913
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
 smp_call_function_single+0x48d/0x5a0 kernel/smp.c:652
 task_function_call kernel/events/core.c:120 [inline]
 perf_install_in_context+0x5bb/0x920 kernel/events/core.c:2959
 __do_sys_perf_event_open kernel/events/core.c:12952 [inline]
 __se_sys_perf_event_open+0x180d/0x1d40 kernel/events/core.c:12594
 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: 0033:0x7fab3cf9f559
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:00007fab3df52028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fab3d225fa0 RCX: 00007fab3cf9f559
RDX: ffffff7fffffffff RSI: 0000000000000000 RDI: 0000200000000480
RBP: 00007fab3d036b50 R08: 0000000000000008 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fab3d226038 R14: 00007fab3d225fa0 R15: 00007fffa9fa9cd8
 </TASK>