Re: cpuidle regression ?

Rafael J. Wysocki
2019-12-09T11:55:25Z

On Mon, Dec 9, 2019 at 12:35 PM Daniel Lezcano
<daniel.lezcano@linaro.org> wrote:
>
> On 09/12/2019 11:50, Rafael J. Wysocki wrote:
> > On Mon, Dec 9, 2019 at 11:32 AM Daniel Lezcano
> > <daniel.lezcano@linaro.org> wrote:
> >>
> >> On 09/12/2019 10:26, Rafael J. Wysocki wrote:
> >>> On Sun, Dec 8, 2019 at 11:40 AM Daniel Lezcano
> >>> <daniel.lezcano@linaro.org> wrote:
> >>>>
> >>>>
> >>>> Hi Rafael,
> >>>>
> >>>> the latest linux-next kernelci report indicates a kernel bug for the
> >>>> imx6 platform. I don't have this board so it is not possible to
> >>>> investigate it.
> >>>>
> >>>> https://storage.kernelci.org/next/master/next-20191208/arm/multi_v7_defconfig/gcc-8/lab-collabora/boot-imx6q-sabrelite.html
> >>>>
> >>>> [ ... ]
> >>>>
> >>>> [ 3.372501] Unable to handle kernel NULL pointer dereference at
> >>>> virtual address 00000000
> >>>>
> >>>> [ ... ]
> >>>>
> >>>> [ 3.408898] PC is at _find_first_bit_le+0xc/0x2c
> >>>> [ 3.413785] LR is at cpuidle_driver_state_disabled+0x40/0xa0
> >>>>
> >>>>
> >>>> Not sure if it is related to the latest changes or not.
> >>>
> >>> It does seem so, in which case the attached patch should address it.
> >>>
> >>> Is there a way to test the patch alone or do I need to push it
> >>> somewhere to be tested?
> >>
> >> Is the bleeding-edge branch monitored by kernelci ?
> >
> > No, it is not right now, AFAICS.
>
> I have a imx7, I will try to reproduce the issue on it. Otherwise, I can
> test on the 'testing' thermal branch temporarily.

Thanks, that'll help!