netdev - Re: [PATCH 19/19] netfilter: gre: fix resource leak when unregister gre proto

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Message-ID: <20130105035048.GA20027@1984>
Date:	Sat, 5 Jan 2013 04:50:48 +0100
From:	Pablo Neira Ayuso <pablo@...filter.org>
To:	Gao feng <gaofeng@...fujitsu.com>
Cc:	netfilter-devel@...r.kernel.org, netdev@...r.kernel.org,
	canqunzhang@...il.com, kaber@...sh.net, ebiederm@...ssion.com
Subject: Re: [PATCH 19/19] netfilter: gre: fix resource leak when
 unregister gre proto

Hi Gao,

On Fri, Dec 28, 2012 at 10:36:46AM +0800, Gao feng wrote:
> Currectly we unregister proto before all conntrack entries of
> this proto being destroyed. so in function destroy_conntrack
> we can't find proper l4proto to call l4proto->destroy.
> this will cause resource leak.

Good catch.

But better to remove the entries before unregistering the protocol
tracker, so l4proto->destroy is always called.

Patch attached.

View attachment "0001-netfilter-nf_conntrack-fix-memory-leak-during-unregi.patch" of type "text/x-diff" (1524 bytes)