CFI failure at __traceiter_neigh_update+0x9d/0xf0 include/trace/events/neigh.h:72 (target: 0xffffc900000074d0; expected type: 0xcdd4cfdd)
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 862 Comm: syz.3.142 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__traceiter_neigh_update+0x9d/0xf0 include/trace/events/neigh.h:72
Code: 05 e8 f7 4c b9 fd 49 8b 7e 08 48 8b 75 c8 48 8b 55 c0 44 89 e9 44 8b 45 d4 44 8b 4d d0 41 ba 23 30 2b 32 45 03 54 24 fc 74 02 <0f> 0b 41 ff d4 48 83 c3 18 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74
RSP: 0018:ffffc900000074d0 EFLAGS: 00010282
RAX: 1ffff11022320483 RBX: ffff888111902410 RCX: 0000000000000004
RDX: ffff888133a2f456 RSI: ffff888110880c00 RDI: ffffc9000dbc5000
RBP: ffffc90000007510 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000d76b972f R11: 1ffffffff0ee4b3d R12: ffffffff817125c0
R13: 0000000000000004 R14: ffff888111902410 R15: dffffc0000000000
FS:  00007f4182a9c6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e823ffc CR3: 0000000134aa0000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000006 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 trace_neigh_update include/trace/events/neigh.h:72 [inline]
 __neigh_update+0x1f4b/0x2080 net/core/neighbour.c:1307
 neigh_update net/core/neighbour.c:1488 [inline]
 neigh_event_ns+0xb3/0x120 net/core/neighbour.c:1517
 arp_process+0x119c/0x1920 net/ipv4/arp.c:851
 NF_HOOK+0x14d/0x1a0 include/linux/netfilter.h:305
 arp_rcv+0x2ef/0x480 net/ipv4/arp.c:990
 __netif_receive_skb_list_ptype net/core/dev.c:5633 [inline]
 __netif_receive_skb_list_core+0x713/0x770 net/core/dev.c:5676
 __netif_receive_skb_list net/core/dev.c:5728 [inline]
 netif_receive_skb_list_internal+0x7d2/0xa60 net/core/dev.c:5819
 gro_normal_list include/net/gro.h:433 [inline]
 napi_complete_done+0x36f/0x790 net/core/dev.c:6160
 virtqueue_napi_complete drivers/net/virtio_net.c:403 [inline]
 virtnet_poll+0x991/0x1150 drivers/net/virtio_net.c:1717
 __napi_poll+0xd0/0x5e0 net/core/dev.c:6594
 napi_poll net/core/dev.c:6661 [inline]
 net_rx_action+0x49b/0xaa0 net/core/dev.c:6775
 handle_softirqs+0x1d7/0x600 kernel/softirq.c:642
 __do_softirq kernel/softirq.c:680 [inline]
 invoke_softirq kernel/softirq.c:497 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:729
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:741
 common_interrupt+0xbe/0xe0 arch/x86/kernel/irq.c:242
 </IRQ>
 <TASK>
 asm_common_interrupt+0x27/0x40 arch/x86/include/asm/idtentry.h:682
RIP: 0010:stack_trace_consume_entry+0x6c/0x290 kernel/stacktrace.c:89
Code: 0f b6 44 15 00 84 c0 0f 85 28 01 00 00 45 3b 11 73 3c 4c 8d 67 0c 4d 89 e7 49 c1 ef 03 41 0f b6 04 17 84 c0 0f 85 53 01 00 00 <45> 8b 34 24 45 85 f6 74 22 41 ff ce 41 0f b6 04 17 84 c0 0f 85 88
RSP: 0018:ffffc9000de0eab0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 1ffff92001bc1d7a RCX: 000000000de0eb00
RDX: dffffc0000000000 RSI: ffffffff81a59d0f RDI: ffffc9000de0ebc0
RBP: ffffc9000de0eaf8 R08: ffffc9000de0ebd0 R09: ffffc9000de0ebc8
R10: 0000000000000004 R11: 1ffff92001bc1d61 R12: ffffc9000de0ebcc
R13: 1ffff92001bc1d79 R14: ffffffff8160ce50 R15: 1ffff92001bc1d79
 arch_stack_walk+0x118/0x150 arch/x86/kernel/stacktrace.c:27
 stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
 kasan_save_alloc_info+0x25/0x30 mm/kasan/generic.c:505
 ____kasan_kmalloc mm/kasan/common.c:379 [inline]
 __kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:388
 kasan_kmalloc include/linux/kasan.h:212 [inline]
 __do_kmalloc_node mm/slab_common.c:938 [inline]
 __kmalloc_node_track_caller+0xb1/0x1e0 mm/slab_common.c:958
 __do_krealloc mm/slab_common.c:1342 [inline]
 krealloc+0x6f/0x110 mm/slab_common.c:1375
 copy_array kernel/bpf/verifier.c:955 [inline]
 copy_verifier_state+0xd7/0xab0 kernel/bpf/verifier.c:1139
 push_stack+0x19b/0x4f0 kernel/bpf/verifier.c:1237
 check_cond_jmp_op kernel/bpf/verifier.c:10487 [inline]
 do_check+0x9620/0xf060 kernel/bpf/verifier.c:12726
 do_check_common+0x11ae/0x1950 kernel/bpf/verifier.c:14930
 do_check_main kernel/bpf/verifier.c:14993 [inline]
 bpf_check+0x3de0/0x10ca0 kernel/bpf/verifier.c:15570
 bpf_prog_load+0x1071/0x15a0 kernel/bpf/syscall.c:2621
 __sys_bpf+0x504/0x780 kernel/bpf/syscall.c:5002
 __do_sys_bpf kernel/bpf/syscall.c:5106 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5104 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5104
 x64_sys_call+0x488/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:322
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f4181b8ebe9
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:00007f4182a9c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f4181dc5fa0 RCX: 00007f4181b8ebe9
RDX: 0000000000000048 RSI: 0000200000000200 RDI: 0000000000000005
RBP: 00007f4181c11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4181dc6038 R14: 00007f4181dc5fa0 R15: 00007ffcfab1f9c8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__traceiter_neigh_update+0x9d/0xf0 include/trace/events/neigh.h:72
Code: 05 e8 f7 4c b9 fd 49 8b 7e 08 48 8b 75 c8 48 8b 55 c0 44 89 e9 44 8b 45 d4 44 8b 4d d0 41 ba 23 30 2b 32 45 03 54 24 fc 74 02 <0f> 0b 41 ff d4 48 83 c3 18 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74
RSP: 0018:ffffc900000074d0 EFLAGS: 00010282
RAX: 1ffff11022320483 RBX: ffff888111902410 RCX: 0000000000000004
RDX: ffff888133a2f456 RSI: ffff888110880c00 RDI: ffffc9000dbc5000
RBP: ffffc90000007510 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000d76b972f R11: 1ffffffff0ee4b3d R12: ffffffff817125c0
R13: 0000000000000004 R14: ffff888111902410 R15: dffffc0000000000
FS:  00007f4182a9c6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e823ffc CR3: 0000000134aa0000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000006 DR6: 00000000fffe0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
   0:	0f b6 44 15 00       	movzbl 0x0(%rbp,%rdx,1),%eax
   5:	84 c0                	test   %al,%al
   7:	0f 85 28 01 00 00    	jne    0x135
   d:	45 3b 11             	cmp    (%r9),%r10d
  10:	73 3c                	jae    0x4e
  12:	4c 8d 67 0c          	lea    0xc(%rdi),%r12
  16:	4d 89 e7             	mov    %r12,%r15
  19:	49 c1 ef 03          	shr    $0x3,%r15
  1d:	41 0f b6 04 17       	movzbl (%r15,%rdx,1),%eax
  22:	84 c0                	test   %al,%al
  24:	0f 85 53 01 00 00    	jne    0x17d
* 2a:	45 8b 34 24          	mov    (%r12),%r14d <-- trapping instruction
  2e:	45 85 f6             	test   %r14d,%r14d
  31:	74 22                	je     0x55
  33:	41 ff ce             	dec    %r14d
  36:	41 0f b6 04 17       	movzbl (%r15,%rdx,1),%eax
  3b:	84 c0                	test   %al,%al
  3d:	0f                   	.byte 0xf
  3e:	85                   	.byte 0x85
  3f:	88                   	.byte 0x88