If param->length is zero, then this could lead to a divide by zero bug later in the function when we do: size %= max; Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c index f10bd97..7667b12 100644 --- a/drivers/usb/misc/usbtest.c +++ b/drivers/usb/misc/usbtest.c @@ -423,6 +423,9 @@ alloc_sglist(int nents, int max, int vary) unsigned i; unsigned size = max; + if (max == 0) + return NULL; + sg = kmalloc_array(nents, sizeof *sg, GFP_KERNEL); if (!sg) return NULL; -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
