--- x/drivers/usb/class/usbtmc.c
+++ y/drivers/usb/class/usbtmc.c
@@ -258,6 +258,7 @@ static int usbtmc_release(struct inode *
 
 	kref_put(&file_data->data->kref, usbtmc_delete);
 	file_data->data = NULL;
+	usb_kill_anchored_urbs(&file_data->submitted);
 	kfree(file_data);
 	return 0;
 }