netfilter: synproxy: ensure zero is returned on non-error return path
authorColin Ian King <colin.king@canonical.com>
Tue, 18 Jun 2019 14:22:44 +0000 (15:22 +0100)
committerPablo Neira Ayuso <pablo@netfilter.org>
Wed, 19 Jun 2019 15:48:34 +0000 (17:48 +0200)
Currently functions nf_synproxy_{ipc4|ipv6}_init return an uninitialized
garbage value in variable ret on a successful return.  Fix this by
returning zero on success.

Addresses-Coverity: ("Uninitialized scalar variable")
Fixes: d7f9b2f18eae ("netfilter: synproxy: extract SYNPROXY infrastructure from {ipt, ip6t}_SYNPROXY")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
net/netfilter/nf_synproxy_core.c

index 5067728..7bf5202 100644 (file)
@@ -798,7 +798,7 @@ int nf_synproxy_ipv4_init(struct synproxy_net *snet, struct net *net)
        }
 
        snet->hook_ref4++;
-       return err;
+       return 0;
 }
 EXPORT_SYMBOL_GPL(nf_synproxy_ipv4_init);
 
@@ -1223,7 +1223,7 @@ nf_synproxy_ipv6_init(struct synproxy_net *snet, struct net *net)
        }
 
        snet->hook_ref6++;
-       return err;
+       return 0;
 }
 EXPORT_SYMBOL_GPL(nf_synproxy_ipv6_init);