netdev - Re: [PATCH net-next] net loopback: Set loopback

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Date:	Mon, 16 Sep 2013 18:41:42 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	ebiederm@...ssion.com, edumazet@...gle.com, jiri@...nulli.us,
	alexander.h.duyck@...el.com, amwang@...hat.com,
	netdev@...r.kernel.org, fruggeri@...stanetworks.com
Subject: Re: [PATCH net-next] net loopback: Set loopback_dev to NULL when
 freed

On Mon, 2013-09-16 at 21:34 -0400, David Miller wrote:
> From: Eric Dumazet <eric.dumazet@...il.com>
> Date: Mon, 16 Sep 2013 17:50:51 -0700
> 
> > On Mon, 2013-09-16 at 16:52 -0700, Eric W. Biederman wrote:
> >> It has recently turned up that we have a number of long standing bugs
> >> in the network stack cleanup code with use of the loopback device
> >> after it has been freed that have not turned up because in most cases
> >> the storage allocated to the loopback device is not reused, when those
> >> accesses happen.
> >> 
> >> Set looback_dev to NULL to trigger oopses instead of silent data corrupt
> >> when we hit this class of bug.
> >> 
> >> Signed-off-by: "Eric W. Biederman" <ebiederm@...ssion.com>
> >> ---
> > 
> > Acked-by: Eric Dumazet <edumazet@...gle.com>
> 
> I'd like to apply this to 'net', any objections?

No objections from me.


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