linux-kernel - Re: iwlagn: memory corruption with WPA enterprise

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Message-ID: <20120305151138.GB17800@redhat.com>
Date:	Mon, 5 Mar 2012 16:11:41 +0100
From:	Stanislaw Gruszka <sgruszka@...hat.com>
To:	Tomáš Janoušek <tomi@...i.cz>
Cc:	wwguy <wey-yi.w.guy@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
	Johannes Berg <johannes@...solutions.net>, security@...nel.org
Subject: Re: iwlagn: memory corruption with WPA enterprise

Hello.

On Mon, Mar 05, 2012 at 04:00:31PM +0100, Tomáš Janoušek wrote:
> On Mon, Mar 05, 2012 at 03:57:01PM +0100, Stanislaw Gruszka wrote:
> > No problem. Can you remind me, is this reproducible on 64-bit kernel
> > with 32-bit user space? I'm asking because I would like to know if we
> > need to  backport those fixes to our kernel. We do not enable
> > CONFIG_CRYPTO_AES_NI_INTEL on 32 bit kernel, only on 64 bit, but if this
> > problem happen with 32-bit user land with 64 bit kernel, we will need to
> > do backport.
> 
> It happens in 32-bit KVM guests on a 64-bit host, so I guess you need it.

Perhaps bug was triggered because KVM 32-bit guest had CONFIG_CRYPTO_AES_NI_INTEL
enabled ?

Stanislaw
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