netdev - Re: x25: possible skb leak on bad facilities

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Message-ID: <AANLkTik8hg5G2FYDCoRgh72v-_euGWKix9Fxm89UdXie@mail.gmail.com>
Date:	Mon, 7 Feb 2011 17:29:43 +1100
From:	Andrew Hendry <andrew.hendry@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	apw@...onical.com, john@...va.com, linux-x25@...r.kernel.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	tim.gardner@...onical.com
Subject: Re: x25: possible skb leak on bad facilities

The issue is a bit more complex than Andy's patch, I think I have a full fix.
Burning it in on test system now, if thats OK ill post patch in a few hours.


On Mon, Feb 7, 2011 at 3:28 PM, David Miller <davem@...emloft.net> wrote:
> From: Andrew Hendry <andrew.hendry@...il.com>
> Date: Tue, 1 Feb 2011 22:55:13 +1100
>
>> There are two callers, when I was crashing it I don't remember it
>> using the backlog path.
>> x25_process_rx_frame is called from both x25_backlog_rcv and also
>> x25_receive_data (via x25_lapb_receive_frame)
>>
>> But reviewing that second path now it looks like it will also leak, -1
>> would make it skip the kfree_skb there as well.
>> So patch looks good to me, when I have some time I'll run it through
>> the environment I had setup originally to confirm.
>
> Andrew, have you had a chance to do this yet?
>
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