Re: MCE boot crash in qemu

[Pekka Enberg]

On Mon, 2009-06-15 at 16:22 +0300, Pekka Enberg wrote:
> 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@xxxxxxxxxxxxxxx>
> 
> This fixes the bug for me!
> 
> Tested-by: Pekka Enberg <penberg@xxxxxxxxxxxxxx>

Ingo, I hit this again in my testing after rebasing to linus/master so I
really would like this in mainline.

			Pekka

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