usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 3-1: config 0 descriptor??
ums-isd200 3-1:0.0: USB Mass Storage device detected
scsi host1: usb-storage 3-1:0.0
usb 3-1: USB disconnect, device number 5
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BUG: KCSAN: data-race in exit_signals / kthread_unpark

write to 0xffff8880aaa3f064 of 4 bytes by task 18384 on cpu 0:
 exit_signals+0x135/0x4c0 kernel/signal.c:2827
 do_exit+0x17b/0x11e0 kernel/exit.c:744
 kthread+0x1aa/0x230 kernel/kthread.c:270
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352

read to 0xffff8880aaa3f064 of 4 bytes by task 16259 on cpu 1:
 to_kthread kernel/kthread.c:75 [inline]
 kthread_unpark+0x1f/0xd0 kernel/kthread.c:487
 kthread_stop+0xd5/0x370 kernel/kthread.c:570
 usb_stor_release_resources drivers/usb/storage/usb.c:812 [inline]
 release_everything+0x49/0x160 drivers/usb/storage/usb.c:879
 usb_stor_disconnect+0xf7/0x150 drivers/usb/storage/usb.c:1085
 usb_unbind_interface+0x12e/0x520 drivers/usb/core/driver.c:436
 __device_release_driver drivers/base/dd.c:1114 [inline]
 device_release_driver_internal+0x17d/0x2d0 drivers/base/dd.c:1145
 device_release_driver+0x1f/0x30 drivers/base/dd.c:1168
 bus_remove_device+0x1b5/0x240 drivers/base/bus.c:533
 device_del+0x2f0/0x780 drivers/base/core.c:2710
 usb_disable_device+0x151/0x3e0 drivers/usb/core/message.c:1238
 usb_disconnect+0x1c9/0x4f0 drivers/usb/core/hub.c:2211
 hub_port_connect drivers/usb/core/hub.c:5046 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5335 [inline]
 port_event drivers/usb/core/hub.c:5481 [inline]
 hub_event+0x13e8/0x2710 drivers/usb/core/hub.c:5563
 process_one_work+0x424/0x930 kernel/workqueue.c:2268
 process_scheduled_works+0x4b/0xa0 kernel/workqueue.c:2330
 worker_thread+0x4e7/0x7e0 kernel/workqueue.c:2416
 kthread+0x203/0x230 kernel/kthread.c:268
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 16259 Comm: kworker/1:5 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
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