Crash in acpi_ns_validate_handle triggered by soundwire on Linux 5.10

[Marcin Ślusarz]

śr., 20 sty 2021 o 23:28 Pierre-Louis Bossart
<pierre-louis.bossart at linux.intel.com> napisał(a):
> >> Linux 5.10 fails to boot on my IceLake laptop, where 5.9 worked fine.
> >> I'm not sure whether it's a bug in ACPI or Soundwire subsystem, so I'm
> >> sending this to both
> >> lists. The W taint flag is because of an unrelated nouveau failure (It
> >> was busted on 5.9, and is
> >> still on 5.10). Full kernel log down below.
> >> It's from a distro kernel, but I can build my own kernel with patches if needed.
> >
> > Please try to add a check for handle against NULL to
> > snd_intel_dsp_check_soundwire() after
> >
> > handle = ACPI_HANDLE(&pci->dev);
> >
> > and see if this makes any difference.
> >
> > This should check handle against NULL anyway, even if it didn't crash later on.

I'll do that later.

>
> Is there a way you can share the DSDT?

I uploaded it here: https://people.freedesktop.org/~mslusarz/tmp/dsdt.dat

>
> The only thing we do in that sdw_intel_acpi_scan() function is check for
> an _ADR and read two _DSD properties. I think it's been 2 years since we
> wrote it and never had an issue, never say never I guess...
>
> If you want to bypass this problem for the time being, you can add a
> kernel option in /etc/modprobe.d/alsa-base.conf
>
> options snd-intel-dspcfg dsp_driver=1
>
> that will force the use of the HDaudio legacy driver and bypass the
> driver autodetection.

Thanks.