From: Evgeny Novikov novikov@ispras.ru
commit 531412492ce93ea29b9ca3b4eb5e3ed771f851dd upstream.
lvs_rh_probe() can return some nonnegative value from usb_control_msg() when it is less than "USB_DT_HUB_NONVAR_SIZE + 2" that is considered as a failure. Make lvs_rh_probe() return -EINVAL in this case.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Evgeny Novikov novikov@ispras.ru Cc: stable stable@vger.kernel.org Link: https://lore.kernel.org/r/20200805090643.3432-1-novikov@ispras.ru Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/usb/misc/lvstest.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/usb/misc/lvstest.c +++ b/drivers/usb/misc/lvstest.c @@ -396,7 +396,7 @@ static int lvs_rh_probe(struct usb_inter USB_DT_SS_HUB_SIZE, USB_CTRL_GET_TIMEOUT); if (ret < (USB_DT_HUB_NONVAR_SIZE + 2)) { dev_err(&hdev->dev, "wrong root hub descriptor read %d\n", ret); - return ret; + return ret < 0 ? ret : -EINVAL; }
/* submit urb to poll interrupt endpoint */