Commit ce3c8692 authored Mar 04, 2011 by Nicolas Kaiser Committed by David S. Miller Mar 07, 2011

drivers/net/macvtap: fix error check



'len' is unsigned of type size_t and can't be negative.

Signed-off-by: Nicolas Kaiser <nikai@nikai.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent b3ca9b02

drivers/net/macvtap.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -528,8 +528,9 @@ static ssize_t macvtap_get_user(struct macvtap_queue *q,
		vnet_hdr_len = q->vnet_hdr_sz;

		err = -EINVAL;
		if ((len -= vnet_hdr_len) < 0)
		if (len < vnet_hdr_len)
		goto err;
		len -= vnet_hdr_len;

		err = memcpy_fromiovecend((void *)&vnet_hdr, iv, 0,
		sizeof(vnet_hdr));