syzbot

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BUG: KCSAN: data-race in wg_socket_set_peer_endpoint / wg_socket_set_peer_endpoint

write to 0xffff888118589354 of 4 bytes by task 3354 on cpu 1:
 wg_socket_set_peer_endpoint+0x3f3/0x470 drivers/net/wireguard/socket.c:286
 wg_socket_set_peer_endpoint_from_skb+0x69/0x90 drivers/net/wireguard/socket.c:305
 wg_receive_handshake_packet drivers/net/wireguard/receive.c:150 [inline]
 wg_packet_handshake_receive_worker+0x3e5/0x5f0 drivers/net/wireguard/receive.c:213
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3317
 worker_thread+0x51d/0x6f0 kernel/workqueue.c:3398
 kthread+0x4ae/0x520 kernel/kthread.c:464
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

read to 0xffff888118589354 of 4 bytes by task 1036 on cpu 0:
 endpoint_eq drivers/net/wireguard/socket.c:263 [inline]
 wg_socket_set_peer_endpoint+0x2b6/0x470 drivers/net/wireguard/socket.c:281
 wg_socket_set_peer_endpoint_from_skb+0x69/0x90 drivers/net/wireguard/socket.c:305
 wg_receive_handshake_packet drivers/net/wireguard/receive.c:172 [inline]
 wg_packet_handshake_receive_worker+0x412/0x5f0 drivers/net/wireguard/receive.c:213
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3317
 worker_thread+0x51d/0x6f0 kernel/workqueue.c:3398
 kthread+0x4ae/0x520 kernel/kthread.c:464
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

value changed: 0x00000000 -> 0x0100007f

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 1036 Comm: kworker/0:2 Not tainted 6.13.0-syzkaller-09030-g6d61a53dd6f5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: wg-kex-wg1 wg_packet_handshake_receive_worker
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