Re: [lkp-robot] [x86] 69218e4799: BUG:kernel_hang_in_boot_stage

From: Thomas Garnier
Date: Tue Mar 21 2017 - 15:29:11 EST


On Tue, Mar 21, 2017 at 12:20 PM, Linus Torvalds
<torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> On Tue, Mar 21, 2017 at 11:16 AM, Thomas Garnier <thgarnie@xxxxxxxxxx> wrote:
> > This error happens even with Andy TLS fix on 32-bit (GDT is on fixmap
> > but not readonly). I am looking into it.
> >
> > KVM internal error. Suberror: 3
> > extra data[0]: 80000b0e
> > extra data[1]: 31
>
> If I read that right, it's extra data[1] 0x31, which EXIT_REASON_EPT_MISCONFIG.
>
> I'm not seeing how the A bit in a GDT entry could have anything to do
> with it. I'm assuming it happens even without Andy's patch?

Correct.

>
> Linus




--
Thomas