------------[ cut here ]------------
WARNING: CPU: 1 PID: 12500 at net/ipv4/route.c:1259 kfree_skb include/linux/skbuff.h:1218 [inline]
WARNING: CPU: 1 PID: 12500 at net/ipv4/route.c:1259 ip_rt_bug+0x28/0x120 net/ipv4/route.c:1258
Modules linked in:
CPU: 1 PID: 12500 Comm: kworker/u4:14 Not tainted 6.1.0-syzkaller-04343-gd039535850ee #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: bat_events batadv_purge_orig
RIP: 0010:ip_rt_bug+0x28/0x120 net/ipv4/route.c:1259
Code: 00 00 f3 0f 1e fa 41 54 55 48 89 d5 53 48 83 ec 08 e8 1c 62 38 f9 66 90 e8 15 62 38 f9 be 02 00 00 00 48 89 ef e8 28 f5 78 ff <0f> 0b 48 83 c4 08 31 c0 5b 5d 41 5c c3 e8 f6 61 38 f9 48 8d 7d 10
RSP: 0018:ffffc900001e0890 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888029468000 RCX: 0000000000000100
RDX: ffff888085331d40 RSI: ffffffff8848efd8 RDI: 0000000000000000
RBP: ffff888028a7ac80 R08: 0000000000000000 R09: ffffffff91335b57
R10: 0000000000000001 R11: 0000000000000001 R12: ffff88801bf0a800
R13: ffff888028a7ac80 R14: 0000000000000000 R15: ffff888028a7acd8
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa837b85058 CR3: 000000002a9e5000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 dst_output include/net/dst.h:444 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 ip_send_skb net/ipv4/ip_output.c:1586 [inline]
 ip_push_pending_frames+0x129/0x2b0 net/ipv4/ip_output.c:1606
 icmp_push_reply+0x319/0x440 net/ipv4/icmp.c:386
 __icmp_send+0xb80/0x13f0 net/ipv4/icmp.c:762
 ipv4_send_dest_unreach net/ipv4/route.c:1239 [inline]
 ipv4_link_failure+0x5aa/0x9b0 net/ipv4/route.c:1246
 dst_link_failure include/net/dst.h:423 [inline]
 arp_error_report+0xcb/0x1c0 net/ipv4/arp.c:296
 neigh_invalidate+0x20d/0x560 net/core/neighbour.c:1067
 neigh_timer_handler+0xd9e/0x1150 net/core/neighbour.c:1154
 call_timer_fn+0x1da/0x7c0 kernel/time/timer.c:1700
 expire_timers+0x2c6/0x5c0 kernel/time/timer.c:1751
 __run_timers kernel/time/timer.c:2022 [inline]
 __run_timers kernel/time/timer.c:1995 [inline]
 run_timer_softirq+0x326/0x910 kernel/time/timer.c:2035
 __do_softirq+0x1fb/0xadc kernel/softirq.c:571
 do_softirq.part.0+0xde/0x130 kernel/softirq.c:472
 </IRQ>
 <TASK>
 do_softirq kernel/softirq.c:464 [inline]
 __local_bh_enable_ip+0x106/0x130 kernel/softirq.c:396
 spin_unlock_bh include/linux/spinlock.h:395 [inline]
 batadv_purge_orig_ref+0xebb/0x1550 net/batman-adv/originator.c:1259
 batadv_purge_orig+0x1b/0x60 net/batman-adv/originator.c:1272
 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
 worker_thread+0x669/0x1090 kernel/workqueue.c:2436
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>