Commit 564e6989 authored Nov 17, 2012 by Dan Carpenter Committed by Greg Kroah-Hartman Nov 21, 2012

USB: usbtest: prevent a divide by zero bug



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@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent fb4e98ab

drivers/usb/misc/usbtest.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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;