netdev - Re: [PATCHv3 net 1/3] openvswitch: Fix double-free on ip

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Date:	Tue, 27 Oct 2015 19:32:40 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	joestringer@...ira.com
Cc:	netdev@...r.kernel.org, fw@...len.de, pablo@...filter.org,
	azhou@...ira.com
Subject: Re: [PATCHv3 net 1/3] openvswitch: Fix double-free on ip_defrag()
 errors

From: Joe Stringer <joestringer@...ira.com>
Date: Sun, 25 Oct 2015 20:21:48 -0700

> If ip_defrag() returns an error other than -EINPROGRESS, then the skb is
> freed. When handle_fragments() passes this back up to
> do_execute_actions(), it will be freed again. Prevent this double free
> by never freeing the skb in do_execute_actions() for errors returned by
> ovs_ct_execute. Always free it in ovs_ct_execute() error paths instead.
> 
> Fixes: 7f8a436eaa2c ("openvswitch: Add conntrack action")
> Reported-by: Florian Westphal <fw@...len.de>
> Signed-off-by: Joe Stringer <joestringer@...ira.com>

Applied.
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