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BUG: KCSAN: data-race in wg_packet_encrypt_worker / wg_packet_encrypt_worker

read to 0xffff88811ac90080 of 4 bytes by task 3410 on cpu 0:
 wg_cpumask_choose_online drivers/net/wireguard/queueing.h:107 [inline]
 wg_queue_enqueue_per_peer_tx drivers/net/wireguard/queueing.h:183 [inline]
 wg_packet_encrypt_worker+0x9f5/0xe90 drivers/net/wireguard/send.c:305
 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 0xffff88811ac90080 of 4 bytes by task 15243 on cpu 1:
 wg_cpumask_choose_online drivers/net/wireguard/queueing.h:110 [inline]
 wg_queue_enqueue_per_peer_tx drivers/net/wireguard/queueing.h:183 [inline]
 wg_packet_encrypt_worker+0xcca/0xe90 drivers/net/wireguard/send.c:305
 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

value changed: 0x00000002 -> 0x00000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 15243 Comm: kworker/1:19 Tainted: G        W           syzkaller #0 PREEMPT(lazy) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: wg-crypt-wg0 wg_packet_encrypt_worker
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