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BUG: KCSAN: data-race in kick_pool_pick / wq_worker_running

read-write to 0xffff888237c2b0a4 of 4 bytes by task 9 on cpu 0:
 wq_worker_running+0x9c/0x120 kernel/workqueue.c:1465
 schedule_timeout+0xca/0x180 kernel/time/sleep_timeout.c:99
 do_wait_for_common kernel/sched/completion.c:100 [inline]
 __wait_for_common kernel/sched/completion.c:121 [inline]
 wait_for_common+0xef/0x1d0 kernel/sched/completion.c:132
 usb_start_wait_urb+0x12c/0x220 drivers/usb/core/message.c:72
 usb_internal_control_msg drivers/usb/core/message.c:117 [inline]
 usb_control_msg+0x182/0x240 drivers/usb/core/message.c:167
 get_port_status drivers/usb/core/hub.c:607 [inline]
 hub_ext_port_status+0xb4/0x410 drivers/usb/core/hub.c:624
 usb_hub_port_status drivers/usb/core/hub.c:674 [inline]
 port_event drivers/usb/core/hub.c:5774 [inline]
 hub_event+0x47e/0x2aa0 drivers/usb/core/hub.c:5966
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0x56a/0xa50 kernel/workqueue.c:3479
 worker_thread+0x569/0x750 kernel/workqueue.c:3560
 kthread+0x223/0x270 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

read to 0xffff888237c2b0a4 of 4 bytes by task 15650 on cpu 1:
 need_more_worker kernel/workqueue.c:954 [inline]
 kick_pool_pick+0x5f/0x310 kernel/workqueue.c:1284
 __queue_work+0x90a/0xbc0 kernel/workqueue.c:2449
 queue_work_on+0xa9/0x140 kernel/workqueue.c:2501
 srcu_queue_delayed_work_on kernel/rcu/srcutree.c:854 [inline]
 srcu_schedule_cbs_sdp kernel/rcu/srcutree.c:867 [inline]
 srcu_gp_end kernel/rcu/srcutree.c:932 [inline]
 srcu_advance_state kernel/rcu/srcutree.c:1850 [inline]
 process_srcu+0xa39/0xd90 kernel/rcu/srcutree.c:1954
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0x56a/0xa50 kernel/workqueue.c:3479
 worker_thread+0x569/0x750 kernel/workqueue.c:3560
 kthread+0x223/0x270 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: 0x00000000 -> 0x00000001

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 15650 Comm: kworker/1:1 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: rcu_gp process_srcu
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