syzbot

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BUG: KCSAN: data-race in wg_socket_set_peer_endpoint / wg_socket_set_peer_endpoint

write to 0xffff888119ce0734 of 4 bytes by task 10 on cpu 0:
 wg_socket_set_peer_endpoint+0x3d2/0x440 drivers/net/wireguard/socket.c:286
 wg_socket_set_peer_endpoint_from_skb+0x6d/0xa0 drivers/net/wireguard/socket.c:305
 wg_receive_handshake_packet drivers/net/wireguard/receive.c:150 [inline]
 wg_packet_handshake_receive_worker+0x3d9/0x5d0 drivers/net/wireguard/receive.c:213
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0x4cb/0x9d0 kernel/workqueue.c:3319
 worker_thread+0x582/0x770 kernel/workqueue.c:3400
 kthread+0x486/0x510 kernel/kthread.c:464
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

read to 0xffff888119ce0734 of 4 bytes by task 36 on cpu 1:
 endpoint_eq drivers/net/wireguard/socket.c:263 [inline]
 wg_socket_set_peer_endpoint+0x270/0x440 drivers/net/wireguard/socket.c:281
 wg_socket_set_peer_endpoint_from_skb+0x6d/0xa0 drivers/net/wireguard/socket.c:305
 wg_receive_handshake_packet drivers/net/wireguard/receive.c:172 [inline]
 wg_packet_handshake_receive_worker+0x406/0x5d0 drivers/net/wireguard/receive.c:213
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0x4cb/0x9d0 kernel/workqueue.c:3319
 worker_thread+0x582/0x770 kernel/workqueue.c:3400
 kthread+0x486/0x510 kernel/kthread.c:464
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

value changed: 0x00000000 -> 0x0100007f

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 36 Comm: kworker/1:1 Not tainted 6.15.0-rc7-syzkaller-00007-g4a95bc121ccd #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: wg-kex-wg1 wg_packet_handshake_receive_worker
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