From 6494f748778a2c5f935b0288b6846701d8a6a1c2 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Fri, 13 Mar 2015 10:52:14 +1100 Subject: [PATCH] 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 Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nft_hash.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/netfilter/nft_hash.c b/net/netfilter/nft_hash.c index c82df0a48fcd8..37c15e6748841 100644 --- a/net/netfilter/nft_hash.c +++ b/net/netfilter/nft_hash.c @@ -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) -- 2.39.5