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BUG: KCSAN: data-race in __queue_work / wq_worker_running

read-write to 0xffff888237c2d164 of 4 bytes by task 3172 on cpu 0:
 wq_worker_running+0x98/0x120 kernel/workqueue.c:1265
 schedule_timeout+0xcc/0x230 kernel/time/timer.c:2183
 schedule_timeout_uninterruptible kernel/time/timer.c:2217 [inline]
 msleep+0x52/0x70 kernel/time/timer.c:2338
 nsim_fib4_rt_add drivers/net/netdevsim/fib.c:369 [inline]
 nsim_fib4_rt_insert drivers/net/netdevsim/fib.c:432 [inline]
 nsim_fib4_event drivers/net/netdevsim/fib.c:464 [inline]
 nsim_fib_event drivers/net/netdevsim/fib.c:884 [inline]
 nsim_fib_event_work+0x1574/0x2250 drivers/net/netdevsim/fib.c:1492
 process_one_work kernel/workqueue.c:2633 [inline]
 process_scheduled_works+0x5b8/0xa40 kernel/workqueue.c:2706
 worker_thread+0x525/0x730 kernel/workqueue.c:2787
 kthread+0x1d7/0x210 kernel/kthread.c:388
 ret_from_fork+0x48/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242

read to 0xffff888237c2d164 of 4 bytes by task 3750 on cpu 1:
 need_more_worker kernel/workqueue.c:835 [inline]
 kick_pool kernel/workqueue.c:1118 [inline]
 __queue_work+0x7ce/0xbb0 kernel/workqueue.c:1803
 queue_work_on+0x95/0xf0 kernel/workqueue.c:1837
 srcu_queue_delayed_work_on kernel/rcu/srcutree.c:799 [inline]
 srcu_schedule_cbs_sdp kernel/rcu/srcutree.c:812 [inline]
 srcu_gp_end kernel/rcu/srcutree.c:880 [inline]
 srcu_advance_state kernel/rcu/srcutree.c:1691 [inline]
 process_srcu+0x707/0xae0 kernel/rcu/srcutree.c:1795
 process_one_work kernel/workqueue.c:2633 [inline]
 process_scheduled_works+0x5b8/0xa40 kernel/workqueue.c:2706
 worker_thread+0x525/0x730 kernel/workqueue.c:2787
 kthread+0x1d7/0x210 kernel/kthread.c:388
 ret_from_fork+0x48/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242

value changed: 0x00000000 -> 0x00000001

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 3750 Comm: kworker/1:9 Not tainted 6.8.0-rc4-syzkaller-00034-g8d3dea210042 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: rcu_gp process_srcu
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bridge0: port 2(bridge_slave_1) entered blocking state
bridge0: port 2(bridge_slave_1) entered forwarding state