From: Arnd Bergmann <arnd@arndb.de>
To: Pablo Neira Ayuso <pablo@netfilter.org>,
Jozsef Kadlecsik <kadlec@netfilter.org>,
Florian Westphal <fw@strlen.de>,
"David S. Miller" <davem@davemloft.net>
Cc: Arnd Bergmann <arnd@arndb.de>,
Fernando Fernandez Mancera <ffmancera@riseup.net>,
netfilter-devel@vger.kernel.org, coreteam@netfilter.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] netfilter: synproxy: fix nf_synproxy_ipv{4,6}_init() return code
Date: Wed, 19 Jun 2019 14:53:07 +0200 [thread overview]
Message-ID: <20190619125314.1005993-1-arnd@arndb.de> (raw)
We return an uninitialized variable on success:
net/netfilter/nf_synproxy_core.c:793:6: error: variable 'err' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized]
if (snet->hook_ref4 == 0) {
^~~~~~~~~~~~~~~~~~~~
Initialize the return code to zero first.
Fixes: d7f9b2f18eae ("netfilter: synproxy: extract SYNPROXY infrastructure from {ipt, ip6t}_SYNPROXY")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
net/netfilter/nf_synproxy_core.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/netfilter/nf_synproxy_core.c b/net/netfilter/nf_synproxy_core.c
index 50677285f82e..283686e972a0 100644
--- a/net/netfilter/nf_synproxy_core.c
+++ b/net/netfilter/nf_synproxy_core.c
@@ -788,7 +788,7 @@ static const struct nf_hook_ops ipv4_synproxy_ops[] = {
int nf_synproxy_ipv4_init(struct synproxy_net *snet, struct net *net)
{
- int err;
+ int err = 0;
if (snet->hook_ref4 == 0) {
err = nf_register_net_hooks(net, ipv4_synproxy_ops,
@@ -1213,7 +1213,7 @@ static const struct nf_hook_ops ipv6_synproxy_ops[] = {
int
nf_synproxy_ipv6_init(struct synproxy_net *snet, struct net *net)
{
- int err;
+ int err = 0;
if (snet->hook_ref6 == 0) {
err = nf_register_net_hooks(net, ipv6_synproxy_ops,
--
2.20.0
next reply other threads:[~2019-06-19 12:53 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-19 12:53 Arnd Bergmann [this message]
2019-06-19 16:04 ` [PATCH] netfilter: synproxy: fix nf_synproxy_ipv{4,6}_init() return code Pablo Neira Ayuso
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