Commit d8bdff59 authored Mar 13, 2015 by Herbert Xu Committed by Pablo Neira Ayuso Mar 13, 2015

netfilter: Fix potential crash in nft_hash walker



When we get back an EAGAIN from rhashtable_walk_next we were
treating it as a valid object which obviously doesn't work too
well.

Luckily this is hard to trigger so it seems nobody has run into
it yet.

This patch fixes it by redoing the next call when we get an EAGAIN.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

parent 78146572

net/netfilter/nft_hash.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -153,6 +153,8 @@ static void nft_hash_walk(const struct nft_ctx ctx, const struct nft_set set,
		iter->err = err;
		goto out;
		}

		continue;
		}

		if (iter->count < iter->skip)