syzbot

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BUG: KCSAN: data-race in mon_reader_del / usb_hcd_submit_urb

write to 0xffff88810148d088 of 4 bytes by task 10567 on cpu 0:
 mon_stop drivers/usb/mon/mon_main.c:166 [inline]
 mon_reader_del+0x1bd/0x260 drivers/usb/mon/mon_main.c:73
 mon_bin_release+0x66/0x120 drivers/usb/mon/mon_bin.c:793
 __fput+0x2ac/0x640 fs/file_table.c:464
 ____fput+0x1c/0x30 fs/file_table.c:492
 task_work_run+0x13a/0x1a0 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0xa8/0x120 kernel/entry/common.c:218
 do_syscall_64+0xd6/0x1c0 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff88810148d088 of 4 bytes by task 10555 on cpu 1:
 usbmon_urb_submit include/linux/usb/hcd.h:723 [inline]
 usb_hcd_submit_urb+0x86/0x14d0 drivers/usb/core/hcd.c:1518
 usb_submit_urb+0xa80/0xb70 drivers/usb/core/urb.c:581
 usb_start_wait_urb+0x91/0x190 drivers/usb/core/message.c:59
 usb_internal_control_msg drivers/usb/core/message.c:103 [inline]
 usb_control_msg+0x182/0x240 drivers/usb/core/message.c:154
 set_port_feature drivers/usb/core/hub.c:464 [inline]
 hub_suspend+0x4a2/0x560 drivers/usb/core/hub.c:3964
 usb_suspend_interface drivers/usb/core/driver.c:1323 [inline]
 usb_suspend_both+0x16a/0x9a0 drivers/usb/core/driver.c:1428
 usb_runtime_suspend+0x4a/0xd0 drivers/usb/core/driver.c:1963
 __rpm_callback+0x299/0x720 drivers/base/power/runtime.c:394
 rpm_callback drivers/base/power/runtime.c:448 [inline]
 rpm_suspend+0x6e4/0x1020 drivers/base/power/runtime.c:672
 __pm_runtime_suspend+0xf1/0x210 drivers/base/power/runtime.c:1142
 pm_runtime_put_sync_autosuspend include/linux/pm_runtime.h:524 [inline]
 usb_autosuspend_device+0x40/0x50 drivers/usb/core/driver.c:1692
 usbdev_release+0x291/0x4a0 drivers/usb/core/devio.c:1114
 __fput+0x2ac/0x640 fs/file_table.c:464
 ____fput+0x1c/0x30 fs/file_table.c:492
 task_work_run+0x13a/0x1a0 kernel/task_work.c:227
 get_signal+0xe78/0x1000 kernel/signal.c:2809
 arch_do_signal_or_restart+0x95/0x4b0 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x62/0x120 kernel/entry/common.c:218
 do_syscall_64+0xd6/0x1c0 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x00000001 -> 0x00000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 10555 Comm: syz.6.12521 Tainted: G        W          6.14.0-rc7-syzkaller-00069-g81e4f8d68c66 #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
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