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From:   Gaurav Singh <gaurav1086@gmail.com>
To:     gaurav1086@gmail.com, Pablo Neira Ayuso <pablo@netfilter.org>,
        Jozsef Kadlecsik <kadlec@netfilter.org>,
        Florian Westphal <fw@strlen.de>,
        "David S. Miller" <davem@davemloft.net>,
        Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>,
        Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>,
        Jakub Kicinski <kuba@kernel.org>,
        netfilter-devel@vger.kernel.org (open list:NETFILTER),
        coreteam@netfilter.org (open list:NETFILTER),
        netdev@vger.kernel.org (open list:NETWORKING [IPv4/IPv6]),
        linux-kernel@vger.kernel.org (open list)
Subject: [PATCH] [net/ipv6] Remove redundant null check in rt_mt6
Date:   Wed, 24 Jun 2020 22:49:48 -0400
Message-Id: <20200625024949.3963-1-gaurav1086@gmail.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

rh cannot be NULL here since its already checked above
assignment and is being dereferenced before. Remove the
redundant null check.

Signed-off-by: Gaurav Singh <gaurav1086@gmail.com>
---
 net/ipv6/netfilter/ip6t_rt.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/ipv6/netfilter/ip6t_rt.c b/net/ipv6/netfilter/ip6t_rt.c
index f633dc84ca3f..733c83d38b30 100644
--- a/net/ipv6/netfilter/ip6t_rt.c
+++ b/net/ipv6/netfilter/ip6t_rt.c
@@ -89,8 +89,7 @@ static bool rt_mt6(const struct sk_buff *skb, struct xt_action_param *par)
 		 !((rtinfo->flags & IP6T_RT_RES) &&
 		   (((const struct rt0_hdr *)rh)->reserved)));
 
-	ret = (rh != NULL) &&
-	      (segsleft_match(rtinfo->segsleft[0], rtinfo->segsleft[1],
+	ret = (segsleft_match(rtinfo->segsleft[0], rtinfo->segsleft[1],
 			      rh->segments_left,
 			      !!(rtinfo->invflags & IP6T_RT_INV_SGS))) &&
 	      (!(rtinfo->flags & IP6T_RT_LEN) ||
-- 
2.17.1