rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (5938 ticks this GP) idle=a78c/1/0x4000000000000000 softirq=43159/43159 fqs=5001
rcu: hardirqs softirqs csw/system
rcu: number: 1182136 0 0
rcu: cputime: 17397 35102 45 ==> 52520(ms)
rcu: (t=10503 jiffies g=43965 q=2497 ncpus=2)
CPU: 1 PID: 12915 Comm: syz.3.1996 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:unwind_next_frame+0x609/0x2970 arch/x86/kernel/unwind_orc.c:-1
Code: c7 c0 c8 b5 97 8e 49 29 c4 48 c7 c0 70 e1 08 8f 48 8b 6c 24 10 49 c1 fc 02 4b 8d 1c 64 48 01 db 48 01 c3 74 77 e8 27 ee 4b 00 <4c> 8b 24 24 4c 8d 73 04 4c 8d 7b 05 4c 89 f0 48 c1 e8 03 42 0f b6
RSP: 0018:ffffc900001ef5b8 EFLAGS: 00000246
RAX: ffffffff813b3dc9 RBX: ffffffff8f1a01b4 RCX: ffff8880270c8000
RDX: 0000000000000100 RSI: ffffffff81df1a5f RDI: ffffffff81df1ac4
RBP: ffffc900001ef6d8 R08: ffffc900001ef750 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000100 R12: 0000000000000000
R13: dffffc0000000000 R14: ffffffff81df1a5f R15: ffffffff8ea320a4
FS: 00007f2ef72946c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb7295456b8 CR3: 0000000062886000 CR4: 00000000003506e0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
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+0x2e/0x50 mm/kasan/generic.c:522
____kasan_slab_free+0x126/0x1e0 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+0xf8/0x270 mm/slub.c:3852
kfree_skb include/linux/skbuff.h:1264 [inline]
packet_rcv+0x566/0x13d0 net/packet/af_packet.c:2280
dev_queue_xmit_nit+0xb16/0xbb0 net/core/dev.c:2385
xmit_one net/core/dev.c:3640 [inline]
dev_hard_start_xmit+0x148/0x740 net/core/dev.c:3660
__dev_queue_xmit+0x19a3/0x3660 net/core/dev.c:4454
dev_queue_xmit include/linux/netdevice.h:3113 [inline]
br_dev_queue_push_xmit+0x6b3/0x870 net/bridge/br_forward.c:53
NF_HOOK+0x351/0x3e0 include/linux/netfilter.h:304
br_forward_finish+0xd3/0x130 net/bridge/br_forward.c:66
NF_HOOK+0x351/0x3e0 include/linux/netfilter.h:304
__br_forward+0x433/0x610 net/bridge/br_forward.c:115
br_dev_xmit+0xb9b/0x1920 net/bridge/br_device.c:-1
__netdev_start_xmit include/linux/netdevice.h:4943 [inline]
netdev_start_xmit include/linux/netdevice.h:4957 [inline]
xmit_one net/core/dev.c:3644 [inline]
dev_hard_start_xmit+0x246/0x740 net/core/dev.c:3660
__dev_queue_xmit+0x19a3/0x3660 net/core/dev.c:4454
NF_HOOK+0x331/0x3b0 include/linux/netfilter.h:-1
arp_xmit+0x16c/0x270 net/ipv4/arp.c:664
arp_solicit+0xc05/0xe40 net/ipv4/arp.c:392
neigh_probe net/core/neighbour.c:1080 [inline]
neigh_timer_handler+0xaad/0xff0 net/core/neighbour.c:1162
call_timer_fn+0x189/0x540 kernel/time/timer.c:1701
expire_timers kernel/time/timer.c:1752 [inline]
__run_timers+0x542/0x800 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+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+0x481/0x4f0 kernel/smp.c:418
Code: 75 11 e8 c2 06 0b 00 48 85 db 75 16 e8 b8 06 0b 00 eb 15 e8 b1 06 0b 00 e8 3c 26 0b 09 48 85 db 74 ea e8 a2 06 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:ffffc9000586fa00 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000200 RCX: 0000000000080000
RDX: ffffc9000def9000 RSI: 0000000000005ab9 RDI: 0000000000005aba
RBP: ffffc9000586fad0 R08: ffffffff911c95ff R09: 1ffffffff22392bf
R10: dffffc0000000000 R11: fffffbfff22392c0 R12: 1ffff92000b0df44
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92000b0df65
smp_call_function_single+0x36d/0x5a0 kernel/smp.c:647
task_function_call kernel/events/core.c:120 [inline]
perf_install_in_context+0x5be/0x920 kernel/events/core.c:2959
__do_sys_perf_event_open kernel/events/core.c:12957 [inline]
__se_sys_perf_event_open+0x1836/0x1c50 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: 0033:0x7f2ef639ce59
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:00007f2ef7294028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f2ef6615fa0 RCX: 00007f2ef639ce59
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140
RBP: 00007f2ef6432d6f R08: 0000000000000002 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2ef6616038 R14: 00007f2ef6615fa0 R15: 00007ffca42ef1f8