netfilter: nft_exthdr: fix error handling in nft_exthdr_init()

"err" needs to be signed for the error handling to work.

Fixes: 36b701fae1 ('netfilter: nf_tables: validate maximum value of u32 netlink attributes')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Dan Carpenter 2016-10-12 09:09:12 +03:00 committed by Pablo Neira Ayuso
parent 09525a09ad
commit 21a9e0f156

View File

@ -59,7 +59,8 @@ static int nft_exthdr_init(const struct nft_ctx *ctx,
const struct nlattr * const tb[])
{
struct nft_exthdr *priv = nft_expr_priv(expr);
u32 offset, len, err;
u32 offset, len;
int err;
if (tb[NFTA_EXTHDR_DREG] == NULL ||
tb[NFTA_EXTHDR_TYPE] == NULL ||