diff options
| author | Florian Westphal <fw@strlen.de> | 2025-08-04 12:10:41 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2025-08-07 13:19:26 +0200 |
| commit | c8a7c2c608180f3b4e51dc958b3861242dcdd76d (patch) | |
| tree | 9d33685500bba558e4c73b7e4273a219a0984bb3 | |
| parent | 1492e3dcb2be3aa46d1963da96aa9593e4e4db5a (diff) | |
netfilter: nft_set_pipapo: don't return bogus extension pointer
Dan Carpenter says:
Commit 17a20e09f086 ("netfilter: nft_set: remove one argument from
lookup and update functions") [..] leads to the following Smatch
static checker warning:
net/netfilter/nft_set_pipapo_avx2.c:1269 nft_pipapo_avx2_lookup()
error: uninitialized symbol 'ext'.
Fix this by initing ext to NULL and set it only once we've found
a match.
Fixes: 17a20e09f086 ("netfilter: nft_set: remove one argument from lookup and update functions")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/netfilter-devel/aJBzc3V5wk-yPOnH@stanley.mountain/
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
| -rw-r--r-- | net/netfilter/nft_set_pipapo_avx2.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/net/netfilter/nft_set_pipapo_avx2.c b/net/netfilter/nft_set_pipapo_avx2.c index db5d367e43c4..2f090e253caf 100644 --- a/net/netfilter/nft_set_pipapo_avx2.c +++ b/net/netfilter/nft_set_pipapo_avx2.c @@ -1150,12 +1150,12 @@ nft_pipapo_avx2_lookup(const struct net *net, const struct nft_set *set, const u32 *key) { struct nft_pipapo *priv = nft_set_priv(set); + const struct nft_set_ext *ext = NULL; struct nft_pipapo_scratch *scratch; u8 genmask = nft_genmask_cur(net); const struct nft_pipapo_match *m; const struct nft_pipapo_field *f; const u8 *rp = (const u8 *)key; - const struct nft_set_ext *ext; unsigned long *res, *fill; bool map_index; int i; @@ -1246,13 +1246,13 @@ next_match: goto out; if (last) { - ext = &f->mt[ret].e->ext; - if (unlikely(nft_set_elem_expired(ext) || - !nft_set_elem_active(ext, genmask))) { - ext = NULL; + const struct nft_set_ext *e = &f->mt[ret].e->ext; + + if (unlikely(nft_set_elem_expired(e) || + !nft_set_elem_active(e, genmask))) goto next_match; - } + ext = e; goto out; } |