------------[ cut here ]------------
WARNING: CPU: 1 PID: 46 at net/ipv4/af_inet.c:157 inet_sock_destruct+0x681/0x790 net/ipv4/af_inet.c:157
Modules linked in:
CPU: 1 UID: 0 PID: 46 Comm: kworker/u8:2 Not tainted 6.12.30-syzkaller-g153a0a38e976 #0 148e3123b04ac6bd10e65cc50fbc76805c129a8d
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: wg-kex-wg0 wg_packet_handshake_send_worker
RIP: 0010:inet_sock_destruct+0x681/0x790 net/ipv4/af_inet.c:157
Code: a3 e8 b3 f2 c8 fc 0f 0b e9 53 fe ff ff e8 a7 f2 c8 fc 0f 0b e9 92 fe ff ff e8 9b f2 c8 fc 0f 0b e9 c4 fe ff ff e8 8f f2 c8 fc <0f> 0b e9 f6 fe ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 65 fc ff
RSP: 0018:ffffc900002ff0e0 EFLAGS: 00010293
RAX: ffffffff84bcaf51 RBX: 0000000080003000 RCX: ffff88810ce5b900
RDX: 0000000000000000 RSI: 0000000080003000 RDI: 0000000000000000
RBP: ffffc900002ff128 R08: ffff88811adc1f7f R09: 1ffff110235b83ef
R10: dffffc0000000000 R11: ffffed10235b83f0 R12: ffff88811adc1e00
R13: ffff88811adc1e00 R14: ffff88811adc1f64 R15: 1ffff110235b83c2
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4099f81178 CR3: 0000000107ea2000 CR4: 00000000003526b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000004144
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __sk_destruct+0x68/0x6a0 net/core/sock.c:2277
 sk_destruct net/core/sock.c:2325 [inline]
 __sk_free+0x313/0x410 net/core/sock.c:2336
 sk_free+0x58/0xb0 net/core/sock.c:2347
 tcp_wfree+0x299/0x500 net/ipv4/tcp_output.c:1240
 skb_release_head_state+0x115/0x260 net/core/skbuff.c:1187
 skb_release_all net/core/skbuff.c:1198 [inline]
 __kfree_skb+0x29/0x210 net/core/skbuff.c:1214
 sk_skb_reason_drop+0xd8/0x310 net/core/skbuff.c:1252
 kfree_skb_reason include/linux/skbuff.h:1271 [inline]
 __neigh_event_send+0x83d/0x1280 net/core/neighbour.c:1233
 neigh_event_send_probe include/net/neighbour.h:474 [inline]
 neigh_event_send include/net/neighbour.h:480 [inline]
 neigh_resolve_output+0x1b4/0x810 net/core/neighbour.c:1549
 neigh_output include/net/neighbour.h:550 [inline]
 ip_finish_output2+0xc39/0xf20 net/ipv4/ip_output.c:236
 __ip_finish_output+0x17b/0x3e0 net/ipv4/ip_output.c:-1
 ip_finish_output+0x35/0x360 net/ipv4/ip_output.c:324
 NF_HOOK_COND include/linux/netfilter.h:306 [inline]
 ip_output+0x160/0x2a0 net/ipv4/ip_output.c:434
 dst_output include/net/dst.h:459 [inline]
 ip_local_out+0xde/0x110 net/ipv4/ip_output.c:130
 iptunnel_xmit+0x549/0x950 net/ipv4/ip_tunnel_core.c:82
 udp_tunnel_xmit_skb+0x234/0x380 net/ipv4/udp_tunnel_core.c:173
 send4+0x6c3/0x9d0 drivers/net/wireguard/socket.c:85
 wg_socket_send_skb_to_peer+0xd8/0x1e0 drivers/net/wireguard/socket.c:175
 wg_socket_send_buffer_to_peer+0x11c/0x170 drivers/net/wireguard/socket.c:200
 wg_packet_send_handshake_initiation drivers/net/wireguard/send.c:40 [inline]
 wg_packet_handshake_send_worker+0x1d8/0x240 drivers/net/wireguard/send.c:51
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0x7d2/0x1020 kernel/workqueue.c:3319
 worker_thread+0xc58/0x1250 kernel/workqueue.c:3400
 kthread+0x2ca/0x370 kernel/kthread.c:389
 ret_from_fork+0x64/0xa0 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
---[ end trace 0000000000000000 ]---