------------[ cut here ]------------
WARNING: CPU: 0 PID: 5222 at net/ipv4/route.c:1254 ip_rt_bug+0x2c/0x110 net/ipv4/route.c:1254
Modules linked in:
CPU: 0 UID: 0 PID: 5222 Comm: udevd Not tainted 6.12.0-syzkaller-09073-g9f16d5e6f220 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:ip_rt_bug+0x2c/0x110 net/ipv4/route.c:1254
Code: 1e fa 41 57 41 56 41 55 41 54 53 48 89 d3 e8 bb c8 76 f7 66 90 e8 b4 c8 76 f7 31 ff 48 89 de ba 02 00 00 00 e8 85 40 6a ff 90 <0f> 0b 90 31 c0 5b 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc f3 0f 1e
vkms_vblank_simulate: vblank timer overrun
RSP: 0018:ffffc90000007680 EFLAGS: 00010286
RAX: ffcf020766c8b600 RBX: ffff88803265b140 RCX: ffffffff81718eba
RDX: dffffc0000000000 RSI: ffffffff8c0ad8a0 RDI: ffffffff8c607de0
RBP: 0000000000000001 R08: ffffffff942ee92f R09: ffffffff8a1f176b
R10: dffffc0000000000 R11: fffffbfff285dd26 R12: dffffc0000000000
R13: ffffc900000078f8 R14: ffff88804d9b3c80 R15: ffff888021ad9b00
FS:  00007fc0cb093c80(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555fec55c8 CR3: 000000007aec4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ip_local_out net/ipv4/ip_output.c:130 [inline]
 ip_send_skb net/ipv4/ip_output.c:1505 [inline]
 ip_push_pending_frames+0xbf/0x150 net/ipv4/ip_output.c:1525
 __icmp_send+0x1013/0x15c0 net/ipv4/icmp.c:779
 ipv4_send_dest_unreach net/ipv4/route.c:1234 [inline]
 ipv4_link_failure+0x62f/0xa10 net/ipv4/route.c:1241
 dst_link_failure include/net/dst.h:429 [inline]
 arp_error_report+0x114/0x160 net/ipv4/arp.c:296
 neigh_invalidate+0x247/0x470 net/core/neighbour.c:1010
 neigh_timer_handler+0x8a5/0xfe0 net/core/neighbour.c:1097
 call_timer_fn+0x18e/0x650 kernel/time/timer.c:1793
 expire_timers kernel/time/timer.c:1844 [inline]
 __run_timers kernel/time/timer.c:2418 [inline]
 __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2430
 run_timer_base kernel/time/timer.c:2439 [inline]
 run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2449
 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:655
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__sanitizer_cov_trace_pc+0x5d/0x70 kernel/kcov.c:235
Code: f8 15 00 00 83 fa 02 75 21 48 8b 91 00 16 00 00 48 8b 32 48 8d 7e 01 8b 89 fc 15 00 00 48 39 cf 73 08 48 89 3a 48 89 44 f2 08 <c3> cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90
RSP: 0018:ffffc90003917b68 EFLAGS: 00000293
RAX: ffffffff82102dd0 RBX: 0000000000000035 RCX: ffff88807ac03c00
RDX: 0000000000000000 RSI: 0000000000000036 RDI: ffff88804e800000
RBP: 0000777fb17fffff R08: ffffffff821024f9 R09: 1ffff92000722f6c
R10: dffffc0000000000 R11: fffff52000722f6d R12: ffff8880619a5978
R13: 0000000000000036 R14: ffff88804e800000 R15: 0000000000000036
 check_stack_object+0x10/0x90 mm/usercopy.c:38
 __check_object_size+0x67/0x900 mm/usercopy.c:226
 check_object_size include/linux/thread_info.h:228 [inline]
 check_copy_size include/linux/thread_info.h:264 [inline]
 copy_to_iter include/linux/uio.h:210 [inline]
 seq_read_iter+0xb70/0xd70 fs/seq_file.c:281
 new_sync_read fs/read_write.c:484 [inline]
 vfs_read+0x991/0xb70 fs/read_write.c:565
 ksys_read+0x18f/0x2b0 fs/read_write.c:708
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc0cb15eb6a
Code: 00 3d 00 00 41 00 75 0d 50 48 8d 3d 2d 08 0a 00 e8 ea 7d 01 00 31 c0 e9 07 ff ff ff 64 8b 04 25 18 00 00 00 85 c0 75 1b 0f 05 <48> 3d 00 f0 ff ff 76 6c 48 8b 15 8f a2 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffee5645358 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 000055cf67e74930 RCX: 00007fc0cb15eb6a
RDX: 0000000000001000 RSI: 000055cf67ebcd40 RDI: 000000000000000c
RBP: 000055cf67e74930 R08: 000000000000000c R09: 0000000000000800
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000003fff R14: 00007ffee5645838 R15: 000000000000000a
 </TASK>
----------------
Code disassembly (best guess):
   0:	f8                   	clc
   1:	15 00 00 83 fa       	adc    $0xfa830000,%eax
   6:	02 75 21             	add    0x21(%rbp),%dh
   9:	48 8b 91 00 16 00 00 	mov    0x1600(%rcx),%rdx
  10:	48 8b 32             	mov    (%rdx),%rsi
  13:	48 8d 7e 01          	lea    0x1(%rsi),%rdi
  17:	8b 89 fc 15 00 00    	mov    0x15fc(%rcx),%ecx
  1d:	48 39 cf             	cmp    %rcx,%rdi
  20:	73 08                	jae    0x2a
  22:	48 89 3a             	mov    %rdi,(%rdx)
  25:	48 89 44 f2 08       	mov    %rax,0x8(%rdx,%rsi,8)
* 2a:	c3                   	ret <-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00
  39:	0f 1f 40 00          	nopl   0x0(%rax)
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop