==================================================================
BUG: KCSAN: data-race in __queue_work / wq_worker_running

read-write to 0xffff888237c2abe0 of 4 bytes by task 883 on cpu 0:
 wq_worker_running+0x96/0xe0 kernel/workqueue.c:880
 schedule_timeout+0xc1/0x290 kernel/time/timer.c:2167
 schedule_timeout_uninterruptible kernel/time/timer.c:2201 [inline]
 msleep+0x57/0x70 kernel/time/timer.c:2322
 nsim_fib6_rt_replace drivers/net/netdevsim/fib.c:727 [inline]
 nsim_fib6_rt_insert drivers/net/netdevsim/fib.c:761 [inline]
 nsim_fib6_event drivers/net/netdevsim/fib.c:856 [inline]
 nsim_fib_event drivers/net/netdevsim/fib.c:889 [inline]
 nsim_fib_event_work+0x2416/0x2c30 drivers/net/netdevsim/fib.c:1492
 process_one_work+0x3d3/0x720 kernel/workqueue.c:2289
 process_scheduled_works kernel/workqueue.c:2352 [inline]
 worker_thread+0x7cf/0xa70 kernel/workqueue.c:2438
 kthread+0x1a9/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

read to 0xffff888237c2abe0 of 4 bytes by task 19 on cpu 1:
 __need_more_worker kernel/workqueue.c:785 [inline]
 insert_work kernel/workqueue.c:1365 [inline]
 __queue_work+0x79e/0xa60 kernel/workqueue.c:1517
 queue_work_on+0x7e/0xe0 kernel/workqueue.c:1545
 wg_queue_enqueue_per_peer_tx+0x118/0x210 drivers/net/wireguard/queueing.h:191
 wg_packet_encrypt_worker+0x8b4/0xab0 drivers/net/wireguard/send.c:305
 process_one_work+0x3d3/0x720 kernel/workqueue.c:2289
 worker_thread+0x618/0xa70 kernel/workqueue.c:2436
 kthread+0x1a9/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

value changed: 0x00000001 -> 0x00000002

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 19 Comm: kworker/1:0 Not tainted 6.2.0-rc2-syzkaller-00313-g9b43a525db12-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: wg-crypt-wg0 wg_packet_encrypt_worker
==================================================================