netdev - Re: [Bugme-new] [Bug 33502] New: Caught 64-bit read from uninitialized memory in __alloc

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Message-ID: <alpine.DEB.2.00.1105092305260.7275@tiger>
Date:	Mon, 9 May 2011 23:06:12 +0300 (EEST)
From:	Pekka Enberg <penberg@...nel.org>
To:	Christoph Lameter <cl@...ux.com>
cc:	Eric Dumazet <eric.dumazet@...il.com>,
	Pekka Enberg <penberg@...helsinki.fi>,
	casteyde.christian@...e.fr,
	Andrew Morton <akpm@...ux-foundation.org>,
	netdev@...r.kernel.org, bugzilla-daemon@...zilla.kernel.org,
	bugme-daemon@...zilla.kernel.org,
	Vegard Nossum <vegardno@....uio.no>
Subject: Re: [Bugme-new] [Bug 33502] New: Caught 64-bit read from uninitialized
 memory in __alloc_skb

On Mon, 9 May 2011, Christoph Lameter wrote:
> There is still an issue and now you can no longer fix the thing through
> CONFIG_CMPXCHG_LOCAL.
>
> It needs to be legal for slub to deref the counter even if the object has
> been freed.

We can use kmemcheck_mark_initialized() for that.
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