rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (10500 ticks this GP) idle=877c/1/0x4000000000000000 softirq=12774/12774 fqs=4654
rcu: hardirqs softirqs csw/system
rcu: number: 1379997 0 0
rcu: cputime: 17960 34519 64 ==> 52510(ms)
rcu: (t=10503 jiffies g=12029 q=1206 ncpus=2)
CPU: 1 PID: 5945 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:unwind_next_frame+0x1c71/0x2990 arch/x86/kernel/unwind_orc.c:665
Code: 00 41 8b 6d 00 89 ef 44 8b b4 24 94 00 00 00 44 89 f6 e8 c2 b3 4b 00 44 39 f5 0f 85 9e 00 00 00 48 8b 44 24 68 42 80 3c 38 00 <74> 08 48 89 df e8 15 2b a4 00 4d 8b 75 38 49 8d 7d 08 48 89 f8 48
RSP: 0018:ffffc900001efef8 EFLAGS: 00000246
RAX: 1ffff9200003e000 RBX: ffffc900001f0000 RCX: 0000000000000100
RDX: ffff88802eae1e00 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 0000000000000001 R08: ffff88802eae1e00 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000100 R12: ffffc900034c7f58
R13: ffffc900001effc8 R14: 0000000000000001 R15: dffffc0000000000
FS: 0000555565596500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000013d3 CR3: 00000000734b4000 CR4: 00000000003506e0
Call Trace:
arch_stack_walk+0x144/0x190 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4e/0x70 mm/kasan/common.c:53
kasan_save_free_info+0x28/0x40 mm/kasan/generic.c:522
____kasan_slab_free+0x126/0x1f0 mm/kasan/common.c:237
kasan_slab_free include/linux/kasan.h:164 [inline]
slab_free_hook mm/slub.c:1811 [inline]
slab_free_freelist_hook+0x130/0x1a0 mm/slub.c:1837
slab_free mm/slub.c:3830 [inline]
__kmem_cache_free+0xba/0x1f0 mm/slub.c:3843
skb_kfree_head net/core/skbuff.c:946 [inline]
skb_free_head net/core/skbuff.c:958 [inline]
skb_release_data+0x609/0x7f0 net/core/skbuff.c:988
skb_release_all net/core/skbuff.c:1054 [inline]
__kfree_skb net/core/skbuff.c:1068 [inline]
consume_skb+0xb2/0x110 net/core/skbuff.c:1284
netlink_broadcast_filtered+0x103c/0x1130 net/netlink/af_netlink.c:1543
netlink_broadcast net/netlink/af_netlink.c:1565 [inline]
nlmsg_multicast include/net/netlink.h:1090 [inline]
nlmsg_notify+0xe3/0x1a0 net/netlink/af_netlink.c:2593
__neigh_notify+0x1ae/0x300 net/core/neighbour.c:3543
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+0x491/0x23d0 net/core/neighbour.c:649
ip6_finish_output2+0x156d/0x1620 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+0xbb9/0x1480 net/ipv6/ndisc.c:513
addrconf_rs_timer+0x36b/0x640 net/ipv6/addrconf.c:4036
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:generic_exec_single+0x477/0x4e0 kernel/smp.c:418
Code: 75 11 e8 0c 10 0b 00 48 85 db 75 16 e8 02 10 0b 00 eb 15 e8 fb 0f 0b 00 e8 06 f8 12 09 48 85 db 74 ea e8 ec 0f 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:ffffc900034c7a00 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000200 RCX: ffff88802eae1e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900034c7ad0 R08: ffffffff911ee60f R09: 1ffffffff223dcc1
R10: dffffc0000000000 R11: fffffbfff223dcc2 R12: 1ffff92000698f44
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92000698f65
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:2950
__do_sys_perf_event_open kernel/events/core.c:12949 [inline]
__se_sys_perf_event_open+0x1841/0x1c60 kernel/events/core.c:12601
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: 0033:0x7f512dd9e0d9
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:00007ffd5f1e03a8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f512e025fa0 RCX: 00007f512dd9e0d9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000680
RBP: 00007f512de35024 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f512e025fac R14: 00007f512e025fa0 R15: 00007f512e025fa0