netdev - [PATCH net] ipv6: sr: fix double free of skb after handling invalid SRH

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Message-ID: <20170419141019.8193-1-david.lebrun@uclouvain.be>
Date:   Wed, 19 Apr 2017 16:10:19 +0200
From:   David Lebrun <david.lebrun@...ouvain.be>
To:     <netdev@...r.kernel.org>
CC:     David Lebrun <david.lebrun@...ouvain.be>,
        Dan Carpenter <dan.carpenter@...cle.com>
Subject: [PATCH net] ipv6: sr: fix double free of skb after handling invalid SRH

The icmpv6_param_prob() function already does a kfree_skb(),
this patch removes the duplicate one.

Fixes: 1ababeba4a21f3dba3da3523c670b207fb2feb62 ("ipv6: implement dataplane support for rthdr type 4 (Segment Routing Header)")
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Cc: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: David Lebrun <david.lebrun@...ouvain.be>
---
 net/ipv6/exthdrs.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index 275cac6..25192a3 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -388,7 +388,6 @@ static int ipv6_srh_rcv(struct sk_buff *skb)
 		icmpv6_param_prob(skb, ICMPV6_HDR_FIELD,
 				  ((&hdr->segments_left) -
 				   skb_network_header(skb)));
-		kfree_skb(skb);
 		return -1;
 	}
 
-- 
2.10.2