syzbot

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BUG: KCSAN: data-race in wg_socket_set_peer_endpoint / wg_socket_set_peer_endpoint

write to 0xffff8881082006d4 of 4 bytes by task 7 on cpu 0:
 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:3267 [inline]
 process_scheduled_works+0x465/0x990 kernel/workqueue.c:3348
 worker_thread+0x526/0x730 kernel/workqueue.c:3429
 kthread+0x1d1/0x210 kernel/kthread.c:388
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

read to 0xffff8881082006d4 of 8 bytes by task 23 on cpu 1:
 ipv6_addr_equal include/net/ipv6.h:673 [inline]
 endpoint_eq drivers/net/wireguard/socket.c:269 [inline]
 wg_socket_set_peer_endpoint+0x180/0x470 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:3267 [inline]
 process_scheduled_works+0x465/0x990 kernel/workqueue.c:3348
 worker_thread+0x526/0x730 kernel/workqueue.c:3429
 kthread+0x1d1/0x210 kernel/kthread.c:388
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

value changed: 0x0000000000000000 -> 0x000000010100007f

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 23 Comm: kworker/1:0 Not tainted 6.9.0-rc6-syzkaller-00290-gb9158815de52 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: wg-kex-wg1 wg_packet_handshake_receive_worker
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