linux-kernel - [PATCH] netfilter: ip_tables: remove useless variable assignment in get

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Message-ID: <20170626223428.GA11614@embeddedgus>
Date:   Mon, 26 Jun 2017 17:34:28 -0500
From:   "Gustavo A. R. Silva" <garsilva@...eddedor.com>
To:     Pablo Neira Ayuso <pablo@...filter.org>,
        Jozsef Kadlecsik <kadlec@...ckhole.kfki.hu>,
        Florian Westphal <fw@...len.de>,
        "David S. Miller" <davem@...emloft.net>,
        Alexey Kuznetsov <kuznet@....inr.ac.ru>,
        James Morris <jmorris@...ei.org>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        Patrick McHardy <kaber@...sh.net>
Cc:     netfilter-devel@...r.kernel.org, coreteam@...filter.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <garsilva@...eddedor.com>
Subject: [PATCH] netfilter: ip_tables: remove useless variable assignment in
 get_info()

Value assigned to variable _ret_ at line 970 is overwritten either at
line 986 or 988, before it can be used. This makes such variable
assignment useless.

Addresses-Coverity-ID: 1226932
Signed-off-by: Gustavo A. R. Silva <garsilva@...eddedor.com>
---
 net/ipv4/netfilter/ip_tables.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index 2a55a40..648697c 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -967,7 +967,7 @@ static int get_info(struct net *net, void __user *user,
 		struct xt_table_info tmp;
 
 		if (compat) {
-			ret = compat_table_info(private, &tmp);
+			compat_table_info(private, &tmp);
 			xt_compat_flush_offsets(AF_INET);
 			private = &tmp;
 		}
-- 
2.5.0