Re: mainline/master boot bisection: v4.19-12838-g71e56028173b on beagle-xm

Olof Johansson
2018-11-07T16:16:47Z

On Wed, Nov 7, 2018 at 8:09 AM Guillaume Tucker
<guillaume.tucker@collabora.com> wrote:
>
> On 06/11/2018 10:54, Guillaume Tucker wrote:
> > On 05/11/2018 14:33, Olof Johansson wrote:
> >> On Mon, Nov 5, 2018 at 1:43 AM Guillaume Tucker
> >> <guillaume.tucker@collabora.com> wrote:
> >>>
> >>> Hi Linus,
> >>>
> >>> Please see below, the kernelci.org automated boot bisection found
> >>> that the OMAP3 BeagleBoard-xM is failing to boot with SMP
> >>> disabled and PREEMPT enabled in multi_v7_defconfig. There is no
> >>> log output after the bootloader so the kernel seems to be
> >>> crashing very early on.
> >>
> >> Can you enable DEBUG_LL to capture what goes wrong?
> >
> > Yes I've scheduled a re-run of the automated bisection with
> > DEBUG_LL turned on, but the beagle-xm board is currently offline
> > in lab-baylibre. I'll keep you posted when I get some results.
>
> Unfortunately, enabling the DEBUG_LL config didn't help. There's
> still no visible kernel log at all from the failing LAVA jobs:
>
> http://lava.baylibre.com:10080/scheduler/alljobs?length=25&search=lava-bisect-9638#table
>
>
> This might be a hard one to debug without physical access to the
> board, but please let me know if you think there's anything else
> I can try. For example, if there's a known older kernel revision
> where the combination of SMP=n and PREEMPT=y worked then I could
> try to run an automated boot bisection based on that.

Is this only beagle-xm, or do we see it on all OMAP3 hardware?

-Olof