diff options
| author | Florian Westphal <fw@strlen.de> | 2021-06-08 23:06:07 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2021-06-09 21:29:23 +0200 |
| commit | c5c6accd7b7e10434d6afda4f6a5107c480bb4fb (patch) | |
| tree | 3634d26b4cd6d240a59c63784d194c0166f05dff /net/netfilter/nf_tables_api.c | |
| parent | d4fb1f954fc7e2044b64b7d690400b99a6d5775c (diff) | |
netfilter: nf_tables: move base hook annotation to init helper
coverity scanner says:
2187 if (nft_is_base_chain(chain)) {
vvv CID 1505166: Memory - corruptions (UNINIT)
vvv Using uninitialized value "basechain".
2188 basechain->ops.hook_ops_type = NF_HOOK_OP_NF_TABLES;
... I don't see how nft_is_base_chain() can evaluate to true
while basechain pointer is garbage.
However, it seems better to place the NF_HOOK_OP_NF_TABLES annotation
in nft_basechain_hook_init() instead.
Reported-by: coverity-bot <keescook+coverity-bot@chromium.org>
Addresses-Coverity-ID: 1505166 ("Memory - corruptions")
Fixes: 65b8b7bfc5284f ("netfilter: annotate nf_tables base hook ops")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/netfilter/nf_tables_api.c')
| -rw-r--r-- | net/netfilter/nf_tables_api.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index c9308241b688..caaff7ab9e73 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -1997,11 +1997,12 @@ static void nft_basechain_hook_init(struct nf_hook_ops *ops, u8 family, const struct nft_chain_hook *hook, struct nft_chain *chain) { - ops->pf = family; - ops->hooknum = hook->num; - ops->priority = hook->priority; - ops->priv = chain; - ops->hook = hook->type->hooks[ops->hooknum]; + ops->pf = family; + ops->hooknum = hook->num; + ops->priority = hook->priority; + ops->priv = chain; + ops->hook = hook->type->hooks[ops->hooknum]; + ops->hook_ops_type = NF_HOOK_OP_NF_TABLES; } static int nft_basechain_init(struct nft_base_chain *basechain, u8 family, @@ -2168,10 +2169,8 @@ static int nf_tables_addchain(struct nft_ctx *ctx, u8 family, u8 genmask, } nft_trans_chain_policy(trans) = NFT_CHAIN_POLICY_UNSET; - if (nft_is_base_chain(chain)) { - basechain->ops.hook_ops_type = NF_HOOK_OP_NF_TABLES; + if (nft_is_base_chain(chain)) nft_trans_chain_policy(trans) = policy; - } err = nft_chain_add(table, chain); if (err < 0) { |