rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (1 GPs behind) idle=f02c/1/0x4000000000000000 softirq=32679/32680 fqs=1587
rcu: hardirqs softirqs csw/system
rcu: number: 1160339 0 0
rcu: cputime: 13417 29079 36 ==> 42500(ms)
rcu: (t=10500 jiffies g=37229 q=671 ncpus=2)
CPU: 1 PID: 9508 Comm: syz.3.917 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__stack_depot_save+0x4/0x630 lib/stackdepot.c:361
Code: b8 01 00 00 00 89 d9 48 d3 e0 48 83 c4 08 5b c3 be 01 00 00 00 48 c7 c7 a0 b7 3e 8d 48 89 da e8 e2 62 00 00 eb da f3 0f 1e fa <55> 41 57 41 56 41 55 41 54 53 48 83 ec 20 41 89 cf 89 d5 48 89 fb
RSP: 0018:ffffc900001f00f8 EFLAGS: 00000246
RAX: 000000000000001c RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 000000000000001c RDI: ffffc900001f0100
RBP: ffffc900001f0328 R08: ffffffff8e4a212f R09: 1ffffffff1c94425
R10: dffffc0000000000 R11: fffffbfff1c94426 R12: 0000000000000000
R13: ffffc900001f03d8 R14: ffff888064c62088 R15: ffffc900001f0100
FS: 00007f63fbc266c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000017c0 CR3: 000000004bab8000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x5f/0x70 mm/kasan/common.c:52
kasan_save_free_info+0x2e/0x50 mm/kasan/generic.c:522
____kasan_slab_free+0x126/0x1e0 mm/kasan/common.c:236
kasan_slab_free include/linux/kasan.h:164 [inline]
slab_free_hook mm/slub.c:1811 [inline]
slab_free_freelist_hook+0x130/0x1b0 mm/slub.c:1837
slab_free mm/slub.c:3830 [inline]
kmem_cache_free+0xf8/0x280 mm/slub.c:3852
skb_kfree_head net/core/skbuff.c:947 [inline]
skb_free_head net/core/skbuff.c:961 [inline]
skb_release_data+0x60a/0x800 net/core/skbuff.c:991
skb_release_all net/core/skbuff.c:1057 [inline]
__kfree_skb net/core/skbuff.c:1071 [inline]
consume_skb+0xb2/0x110 net/core/skbuff.c:1287
netlink_broadcast_filtered+0x101c/0x1110 net/netlink/af_netlink.c:1538
netlink_broadcast net/netlink/af_netlink.c:1560 [inline]
nlmsg_multicast include/net/netlink.h:1090 [inline]
nlmsg_notify+0xf0/0x1a0 net/netlink/af_netlink.c:2588
__neigh_notify+0x1ae/0x300 net/core/neighbour.c:3535
neigh_cleanup_and_release+0xa0/0x260 net/core/neighbour.c:102
neigh_del net/core/neighbour.c:226 [inline]
neigh_remove_one+0x5f1/0x700 net/core/neighbour.c:247
neigh_forced_gc net/core/neighbour.c:280 [inline]
neigh_alloc net/core/neighbour.c:486 [inline]
___neigh_create+0x467/0x2440 net/core/neighbour.c:649
ip6_finish_output2+0x159e/0x1650 net/ipv6/ip6_output.c:132
dst_output include/net/dst.h:467 [inline]
NF_HOOK include/linux/netfilter.h:304 [inline]
ndisc_send_skb+0xbed/0x14b0 net/ipv6/ndisc.c:513
addrconf_rs_timer+0x2bc/0x600 net/ipv6/addrconf.c:4006
call_timer_fn+0x16e/0x530 kernel/time/timer.c:1701
expire_timers kernel/time/timer.c:1752 [inline]
__run_timers+0x52d/0x7d0 kernel/time/timer.c:2023
run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036
handle_softirqs+0x280/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xc7/0x190 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:perf_unpin_context+0x0/0x70 kernel/events/core.c:1469
Code: 87 30 00 e9 e3 fe ff ff e8 6d 19 d9 ff eb 05 e8 66 19 d9 ff 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 1f 80 00 00 00 00 <41> 56 53 48 89 fb e8 45 19 d9 ff 48 89 df e8 5d a0 c4 08 48 8d 8b
RSP: 0018:ffffc90003767d38 EFLAGS: 00000246
RAX: 55f8bc550b3fa200 RBX: ffff888066804000 RCX: 0000000000080000
RDX: ffffc90019450000 RSI: 00000000000077f2 RDI: ffff888066804000
RBP: ffffc90003767f10 R08: ffffffff90d945ff R09: 1ffffffff21b28bf
R10: dffffc0000000000 R11: fffffbfff21b28c0 R12: 0000000000000000
R13: 1ffff920006ecfb8 R14: ffff8880205a3f20 R15: ffff88807c4ada00
__do_sys_perf_event_open kernel/events/core.c:12916 [inline]
__se_sys_perf_event_open+0x1802/0x1c20 kernel/events/core.c:12567
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f63fad8f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f63fbc26038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f63fafe5fa0 RCX: 00007f63fad8f749
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140
RBP: 00007f63fae13f91 R08: 0000000000000002 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f63fafe6038 R14: 00007f63fafe5fa0 R15: 00007ffdd5de3ad8