netdev - Re: [PATCH] af_packet: prevent information leak

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Message-ID: <1307425291.2642.66.camel@edumazet-laptop>
Date:	Tue, 07 Jun 2011 07:41:31 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org, kaber@...sh.net
Subject: Re: [PATCH] af_packet: prevent information leak

Le mardi 07 juin 2011 à 07:38 +0200, Eric Dumazet a écrit :

> It should not matter for these structures, or 393e52e33c6c2 would have
> break applications on all arches (not only ARM), since it enlarged them
> without any warning ;)
> 
> 
> 

BTW, it means that next time we want to add a field in these structure,
we cant use the padding space, or else an application cant know for sure
if the kernel put a padding (say on linux-3.0) or the new field
(linux-3.8)



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