================================================================== BUG: KCSAN: data-race in kick_pool / wq_worker_running read-write to 0xffff888237c2e8a4 of 4 bytes by task 3432 on cpu 0: wq_worker_running+0x98/0x130 kernel/workqueue.c:1400 schedule_timeout+0xb8/0x160 kernel/time/sleep_timeout.c:99 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common+0xfb/0x1c0 kernel/sched/completion.c:127 usb_start_wait_urb+0xdc/0x190 drivers/usb/core/message.c:64 usb_internal_control_msg drivers/usb/core/message.c:103 [inline] usb_control_msg+0x182/0x240 drivers/usb/core/message.c:154 get_port_status drivers/usb/core/hub.c:604 [inline] hub_ext_port_status+0xbf/0x480 drivers/usb/core/hub.c:621 usb_hub_port_status drivers/usb/core/hub.c:671 [inline] port_event drivers/usb/core/hub.c:5714 [inline] hub_event+0x538/0x2910 drivers/usb/core/hub.c:5903 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3310 worker_thread+0x51d/0x6f0 kernel/workqueue.c:3391 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 read to 0xffff888237c2e8a4 of 4 bytes by task 3377 on cpu 1: need_more_worker kernel/workqueue.c:934 [inline] kick_pool+0x4d/0x2c0 kernel/workqueue.c:1240 __queue_work+0x8bb/0xb40 kernel/workqueue.c:2340 queue_work_on+0xd3/0x180 kernel/workqueue.c:2390 srcu_queue_delayed_work_on kernel/rcu/srcutree.c:830 [inline] srcu_schedule_cbs_sdp kernel/rcu/srcutree.c:843 [inline] srcu_gp_end kernel/rcu/srcutree.c:910 [inline] srcu_advance_state kernel/rcu/srcutree.c:1747 [inline] process_srcu+0x711/0xb00 kernel/rcu/srcutree.c:1851 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3310 worker_thread+0x51d/0x6f0 kernel/workqueue.c:3391 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 value changed: 0x00000000 -> 0x00000001 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 3377 Comm: kworker/1:4 Not tainted 6.13.0-rc1-syzkaller-00036-g5076001689e4 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: rcu_gp process_srcu ==================================================================