linux-kernel - Re: MCE boot crash in qemu

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Date:	Mon, 15 Jun 2009 16:22:02 +0300
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Vegard Nossum <vegard.nossum@...il.com>,
	Ingo Molnar <mingo@...e.hu>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: MCE boot crash in qemu

On Mon, 2009-06-15 at 14:52 +0200, Andi Kleen wrote:
> x86: mce: Handle banks == 0 case in K7 quirk
> 
> This happens on QEMU which reports MCA capability, but no banks.
> Without this patch there is a buffer overrun and boot ops because the code
> would try to initialize the 0 element of a zero length kmalloc()
> buffer.
> 
> Signed-off-by: Andi Kleen <ak@...ux.intel.com>

This fixes the bug for me!

Tested-by: Pekka Enberg <penberg@...helsinki.fi>

			Pekka

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