------------[ cut here ]------------
WARNING: CPU: 0 PID: 22877 at net/ipv4/route.c:1274 kfree_skb include/linux/skbuff.h:1220 [inline]
WARNING: CPU: 0 PID: 22877 at net/ipv4/route.c:1274 ip_rt_bug+0x25/0xf0 net/ipv4/route.c:1273
Modules linked in:
CPU: 0 PID: 22877 Comm: syz.0.4381 Not tainted 6.1.135-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:ip_rt_bug+0x25/0xf0 net/ipv4/route.c:1274
Code: 41 ff ff ff 90 41 57 41 56 41 55 41 54 53 48 89 d3 e8 df 99 eb f8 66 90 e8 d8 99 eb f8 48 89 df be 01 00 00 00 e8 7b b8 7e ff <0f> 0b 31 c0 5b 41 5c 41 5d 41 5e 41 5f c3 49 bd 00 00 00 00 00 fc
RSP: 0000:ffffc90003a67598 EFLAGS: 00010292
RAX: e36ebc844da6c300 RBX: ffff88806822fa00 RCX: e36ebc844da6c300
RDX: dffffc0000000000 RSI: ffffffff8a6bff00 RDI: ffffffff8abf0ea0
RBP: ffff88807eb1a100 R08: dffffc0000000000 R09: fffffbfff2116e5b
R10: fffffbfff2116e5b R11: 1ffffffff2116e5a R12: ffff88807eb1a130
R13: ffff88806822fa58 R14: ffff88806822fa00 R15: ffff88801eab8d00
FS:  000055556f50a500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f416ff8 CR3: 0000000085a39000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000097 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 dst_output include/net/dst.h:453 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 ip_send_skb+0x129/0x1c0 net/ipv4/ip_output.c:1599
 __icmp_send+0xfbb/0x1320 net/ipv4/icmp.c:785
 ipv4_send_dest_unreach net/ipv4/route.c:1254 [inline]
 ipv4_link_failure+0x65c/0xa10 net/ipv4/route.c:1261
 dst_link_failure include/net/dst.h:423 [inline]
 arp_error_report+0x10e/0x160 net/ipv4/arp.c:296
 neigh_invalidate+0x22c/0x450 net/core/neighbour.c:1059
 neigh_timer_handler+0x911/0x1080 net/core/neighbour.c:1146
 call_timer_fn+0x1a0/0x670 kernel/time/timer.c:1504
 expire_timers kernel/time/timer.c:1549 [inline]
 __run_timers+0x525/0x7c0 kernel/time/timer.c:1820
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833
 handle_softirqs+0x2a1/0x920 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:661
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:673
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1118
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0033:0x7faa9fa6e946
Code: 89 fb 48 89 d0 49 8d 14 d2 49 39 50 18 0f 82 b5 03 00 00 c6 44 24 1e 01 45 31 ff 45 31 f6 44 0f b6 e6 85 c0 0f 84 9e 00 00 00 <44> 89 f9 49 8b 50 30 4c 89 f0 49 03 14 ca 80 3d 4d 92 34 00 00 49
RSP: 002b:00007ffd9f969f30 EFLAGS: 00000297
RAX: 0000000000000001 RBX: 00007faaa08e5720 RCX: ffffffff88171267
RDX: 0000000000001267 RSI: ffffffff88171267 RDI: 0000000000000005
RBP: ffffffff88171267 R08: 00007faa9fdb6118 R09: 00007faa9fda2000
R10: 00007faa9ebfd008 R11: 0000000000000005 R12: 0000000000000005
R13: 0000000000000000 R14: ffffffff88171756 R15: 00000000000268d0
 </TASK>