rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-....: (10093 ticks this GP) idle=6754/1/0x4000000000000000 softirq=42576/42578 fqs=3878
rcu: hardirqs softirqs csw/system
rcu: number: 1321981 0 0
rcu: cputime: 17096 35393 69 ==> 52490(ms)
rcu: (t=10500 jiffies g=54997 q=2587 ncpus=2)
CPU: 0 PID: 12364 Comm: syz.0.1636 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:memset_orig+0x8a/0xac arch/x86/lib/memset_64.S:104
Code: 89 d1 83 e1 38 74 14 c1 e9 03 66 0f 1f 44 00 00 ff c9 48 89 07 48 8d 7f 08 75 f5 83 e2 07 74 0a ff ca 88 07 48 8d 7f 01 75 f6 <4c> 89 d0 c3 48 83 fa 07 76 e7 48 89 07 49 c7 c0 08 00 00 00 4d 29
RSP: 0018:ffffc90000006df0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90000006f00 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90000006f28
RBP: ffffc90000006f18 R08: ffffc90000006f27 R09: 0000000000000000
R10: ffffc90000006f18 R11: fffff52000000de5 R12: ffffc9000e1cfd40
R13: ffffc90000006ec8 R14: ffffffff8a910345 R15: dffffc0000000000
FS: 00007f28cac8e6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 00000000310b4000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
unwind_next_frame+0x1628/0x2990 arch/x86/kernel/unwind_orc.c:592
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_add_bulk net/core/skbuff.c:1125 [inline]
kfree_skb_list_reason+0x264/0x460 net/core/skbuff.c:1147
__dev_xmit_skb net/core/dev.c:3961 [inline]
__dev_queue_xmit+0x20c4/0x37e0 net/core/dev.c:4440
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: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:preempt_schedule_irq+0xba/0x150 kernel/sched/core.c:7011
Code: 00 00 43 c6 44 37 04 f8 74 0b 0f 0b 48 f7 03 08 00 00 00 74 6f bf 01 00 00 00 e8 f1 5a c3 f6 e8 0c 5f f4 f6 fb bf 01 00 00 00 31 b4 ff ff 43 c6 44 37 08 00 48 c7 44 24 40 00 00 00 00 9c 8f
RSP: 0018:ffffc9000e1cfbc0 EFLAGS: 00000282
RAX: 925f74ace4297200 RBX: 0000000000000000 RCX: 925f74ace4297200
RDX: dffffc0000000000 RSI: ffffffff8acacce0 RDI: 0000000000000001
RBP: ffffc9000e1cfc70 R08: ffffffff911eb5ff R09: 1ffffffff223d6bf
R10: dffffc0000000000 R11: fffffbfff223d6c0 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92001c39f78
irqentry_exit+0x67/0x70 kernel/entry/common.c:441
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: 38 31 00 e9 e3 fe ff ff e8 8d ac d8 ff eb 05 e8 86 ac d8 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 65 ac d8 ff 48 89 df e8 dd 20 ec 08 48 8d 8b
RSP: 0018:ffffc9000e1cfd38 EFLAGS: 00000246
RAX: 925f74ace4297200 RBX: ffff8880263f2400 RCX: 0000000000080000
RDX: ffffc9000bbc9000 RSI: 0000000000004e73 RDI: ffff8880263f2400
RBP: ffffc9000e1cff10 R08: ffffffff911eb5ff R09: 1ffffffff223d6bf
R10: dffffc0000000000 R11: fffffbfff223d6c0 R12: 0000000000000000
R13: 1ffff92001c39fb8 R14: 1ffff11004a54ebf R15: ffff888052a61e00
__do_sys_perf_event_open kernel/events/core.c:12968 [inline]
__se_sys_perf_event_open+0x1820/0x1d40 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: 0033:0x7f28c9d9e159
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:00007f28cac8e028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f28ca025fa0 RCX: 00007f28c9d9e159
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000480
RBP: 00007f28c9e3506b R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f28ca026038 R14: 00007f28ca025fa0 R15: 00007ffffadded58