================================================================== BUG: KCSAN: data-race in wg_socket_set_peer_endpoint / wg_socket_set_peer_endpoint read to 0xffff88811a21c108 of 2 bytes by task 9289 on cpu 1: endpoint_eq drivers/net/wireguard/socket.c:259 [inline] wg_socket_set_peer_endpoint+0x1c4/0x440 drivers/net/wireguard/socket.c:280 wg_socket_set_peer_endpoint_from_skb+0x6d/0xa0 drivers/net/wireguard/socket.c:304 wg_receive_handshake_packet drivers/net/wireguard/receive.c:150 [inline] wg_packet_handshake_receive_worker+0x375/0x570 drivers/net/wireguard/receive.c:213 process_one_work kernel/workqueue.c:3322 [inline] process_scheduled_works+0x4d4/0x9a0 kernel/workqueue.c:3405 worker_thread+0x569/0x750 kernel/workqueue.c:3486 kthread+0x221/0x270 kernel/kthread.c:436 ret_from_fork+0x146/0x330 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 write to 0xffff88811a21c108 of 16 bytes by task 3391 on cpu 0: wg_socket_set_peer_endpoint+0x3ac/0x440 drivers/net/wireguard/socket.c:284 wg_socket_set_peer_endpoint_from_skb+0x6d/0xa0 drivers/net/wireguard/socket.c:304 wg_receive_handshake_packet drivers/net/wireguard/receive.c:172 [inline] wg_packet_handshake_receive_worker+0x3a2/0x570 drivers/net/wireguard/receive.c:213 process_one_work kernel/workqueue.c:3322 [inline] process_scheduled_works+0x4d4/0x9a0 kernel/workqueue.c:3405 worker_thread+0x569/0x750 kernel/workqueue.c:3486 kthread+0x221/0x270 kernel/kthread.c:436 ret_from_fork+0x146/0x330 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 3391 Comm: kworker/0:5 Not tainted syzkaller #0 PREEMPT(lazy) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 Workqueue: wg-kex-wg1 wg_packet_handshake_receive_worker ==================================================================