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

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Date:	Mon, 16 Sep 2013 17:50:51 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jiri Pirko <jiri@...nulli.us>,
	Alexander Duyck <alexander.h.duyck@...el.com>,
	Cong Wang <amwang@...hat.com>, netdev@...r.kernel.org,
	Francesco Ruggeri <fruggeri@...stanetworks.com>
Subject: Re: [PATCH net-next] net loopback: Set loopback_dev to NULL when
 freed

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>


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