------------[ cut here ]------------
WARNING: CPU: 1 PID: 10567 at net/ipv4/route.c:1247 ip_rt_bug+0x2a/0x110 net/ipv4/route.c:1247
Modules linked in:
CPU: 1 PID: 10567 Comm: syz-executor.4 Not tainted 6.9.0-rc6-syzkaller-01461-g5829614a7b3b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:ip_rt_bug+0x2a/0x110 net/ipv4/route.c:1247
Code: f3 0f 1e fa 41 57 41 56 41 55 41 54 53 48 89 d3 e8 bb 82 b7 f7 66 90 e8 b4 82 b7 f7 48 89 df be 02 00 00 00 e8 57 93 6d ff 90 <0f> 0b 90 31 c0 5b 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc f3 0f 1e
RSP: 0018:ffffc900036f6700 EFLAGS: 00010282
RAX: 98ecf03fb9bd1600 RBX: ffff88805ee603c0 RCX: ffffffff8173197a
RDX: dffffc0000000000 RSI: ffffffff8bcab900 RDI: ffffffff8c1f8600
RBP: 0000000000000001 R08: ffffffff92f40597 R09: 1ffffffff25e80b2
R10: dffffc0000000000 R11: fffffbfff25e80b3 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff888066180000 R15: ffff8880163b9380
FS:  00007f58efff26c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200017c0 CR3: 0000000024354000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ip_local_out net/ipv4/ip_output.c:129 [inline]
 ip_send_skb net/ipv4/ip_output.c:1492 [inline]
 ip_push_pending_frames+0xbf/0x150 net/ipv4/ip_output.c:1512
 __icmp_send+0xfb0/0x1500 net/ipv4/icmp.c:773
 icmp_ndo_send+0x122/0x540 net/ipv4/icmp.c:796
 wg_xmit+0xbd2/0x1150 drivers/net/wireguard/device.c:227
 __netdev_start_xmit include/linux/netdevice.h:4881 [inline]
 netdev_start_xmit include/linux/netdevice.h:4895 [inline]
 xmit_one net/core/dev.c:3579 [inline]
 dev_hard_start_xmit+0x27a/0x7e0 net/core/dev.c:3595
 __dev_queue_xmit+0x1b0e/0x3d30 net/core/dev.c:4394
 neigh_output include/net/neighbour.h:542 [inline]
 ip_finish_output2+0xe70/0x1380 net/ipv4/ip_output.c:235
 ip_local_out net/ipv4/ip_output.c:129 [inline]
 ip_send_skb+0x74/0x100 net/ipv4/ip_output.c:1492
 udp_send_skb+0xaa4/0x1470 net/ipv4/udp.c:980
 udp_sendmsg+0x1c21/0x2a60 net/ipv4/udp.c:1268
 udpv6_sendmsg+0x1383/0x3270 net/ipv6/udp.c:1399
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0xef/0x270 net/socket.c:745
 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584
 ___sys_sendmsg net/socket.c:2638 [inline]
 __sys_sendmmsg+0x3b2/0x740 net/socket.c:2724
 __do_sys_sendmmsg net/socket.c:2753 [inline]
 __se_sys_sendmmsg net/socket.c:2750 [inline]
 __x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2750
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f58ef27dca9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f58efff20c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f58ef3abf80 RCX: 00007f58ef27dca9
RDX: 0000000000000001 RSI: 00000000200017c0 RDI: 0000000000000004
RBP: 00007f58ef2c947e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f58ef3abf80 R15: 00007fff264dc0c8
 </TASK>