netdev - Re: [PATCH net-next 1/2] ipv6: remove unnecessary codes in tcp

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Message-Id: <20120701.202610.12425223200611171.davem@davemloft.net>
Date:	Sun, 01 Jul 2012 20:26:10 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	roy.qing.li@...il.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH net-next 1/2] ipv6: remove unnecessary codes in
 tcp_ipv6.c

From: roy.qing.li@...il.com
Date: Mon,  2 Jul 2012 11:18:59 +0800

> -	if (opt) {
> -		newnp->opt = ipv6_dup_options(newsk, opt);
> -		if (opt != np->opt)
> -			sock_kfree_s(sk, opt, opt->tot_len);

This is bogus, if we copy the options into a new copy in
ipv6_dup_options() we have to free the old one or else we
leak it.
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