rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-....: (10500 ticks this GP) idle=e154/1/0x4000000000000000 softirq=26610/26610 fqs=5196
rcu: hardirqs softirqs csw/system
rcu: number: 1204467 0 0
rcu: cputime: 18381 34107 55 ==> 52500(ms)
rcu: (t=10501 jiffies g=29449 q=1418 ncpus=2)
CPU: 0 PID: 8322 Comm: syz.0.656 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:__seqprop_spinlock_sequence include/linux/seqlock.h:275 [inline]
RIP: 0010:read_seqbegin+0x188/0x250 include/linux/seqlock.h:893
Code: 11 e8 ac cc fa f8 4d 85 f6 75 16 e8 a2 cc fa f8 eb 15 e8 9b cc fa f8 e8 76 d0 0a 02 4d 85 f6 74 ea e8 8c cc fa f8 fb 49 89 df <49> c1 ef 03 43 0f b6 04 2f 84 c0 0f 85 90 00 00 00 44 8b 33 44 89
RSP: 0000:ffffc900000075a0 EFLAGS: 00000246
RAX: ffffffff888d1214 RBX: ffff88802a9ca130 RCX: ffff88802a6f8000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007648 R08: ffffffff922235f7 R09: 1ffffffff24446be
R10: dffffc0000000000 R11: fffffbfff24446bf R12: 1ffff92000000eb4
R13: dffffc0000000000 R14: 0000000000000200 R15: ffff88802a9ca130
FS: 00007f3a8e1f66c0(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f88569ffdcc CR3: 00000000509de000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000000000000008
DR3: 0000000000000008 DR6: 00000000ffff0ff0 DR7: 0000000000ff060a
Call Trace:
neigh_connected_output+0x1ea/0x460 net/core/neighbour.c:1591
neigh_output include/net/neighbour.h:547 [inline]
ip6_finish_output2+0xe61/0x1550 net/ipv6/ip6_output.c:138
NF_HOOK_COND include/linux/netfilter.h:305 [inline]
ip6_output+0x33b/0x530 net/ipv6/ip6_output.c:242
dst_output include/net/dst.h:470 [inline]
NF_HOOK include/linux/netfilter.h:316 [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
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: 0000:ffffc900043ef760 EFLAGS: 00000286
RAX: e5d118bbdfd76f00 RBX: 0000000000000000 RCX: e5d118bbdfd76f00
RDX: dffffc0000000000 RSI: ffffffff8aead140 RDI: ffffffff8b3c5260
RBP: ffffc900043ef7b0 R08: ffffffff92223607 R09: 1ffffffff24446c0
R10: dffffc0000000000 R11: fffffbfff24446c1 R12: ffff88802a6f8000
R13: 1ffff110171879a1 R14: dffffc0000000000 R15: ffff8880b8c3cd08
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: 0033:0x7f3a8ff9f559
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:00007f3a8e1f6028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f3a90225fa0 RCX: 00007f3a8ff9f559
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000180
RBP: 00007f3a90036b50 R08: 0000000000000002 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3a90226038 R14: 00007f3a90225fa0 R15: 00007ffee428fc68