Date: Thu, 3 Oct 2019 06:14:27 -0700 From: Steve Kargl <sgk@troutmask.apl.washington.edu> To: Hans Petter Selasky <hps@selasky.org> Cc: freebsd-current@freebsd.org, Johannes Lundberg <johalun0@gmail.com> Subject: Re: radeon panics kernels Message-ID: <20191003131427.GB4677@troutmask.apl.washington.edu> In-Reply-To: <a8621832-75e3-38fb-a766-5b9bc47c131d@selasky.org> References: <20191002211946.GA1031@troutmask.apl.washington.edu> <c77bbac6-beb3-eb84-0609-670117f444c0@selasky.org> <20191003125920.GA4528@troutmask.apl.washington.edu> <a8621832-75e3-38fb-a766-5b9bc47c131d@selasky.org>
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On Thu, Oct 03, 2019 at 03:05:27PM +0200, Hans Petter Selasky wrote:
> On 2019-10-03 14:59, Steve Kargl wrote:
> > On Thu, Oct 03, 2019 at 09:17:32AM +0200, Hans Petter Selasky wrote:
> >> On 2019-10-02 23:19, Steve Kargl wrote:
> >>> troutmask.apl.washington.edu dumped core - see /var/crash/vmcore.7
> >>>
> >>> Wed Oct 2 14:12:38 PDT 2019
> >>>
> >>
> >> This looks like a simple NULL pointer.
> >>
> >> Can you re-compile the drm ports module with debugging symbols and then
> >> reproduce?
> >>
> >
> > Yes. Is there a ports knob, ie., 'make -DEBUG' for the
> > drm ports? Or, do I need to add CFLAGS+=-g to the Makefile?
> >
> > BTW, this is what I have installed
> >
> > drm-current-kmod-4.16.g20190927 DRM modules for the linuxkpi-based KMS
> > drm-kmod-g20190710 Metaport of DRM modules
> > gpu-firmware-kmod-g20190825 Firmware modules for the linuxkpi-based KMS
>
> If you leave the port debug knob for drm-current-kmod AS-IS, I think you
> can get away with:
>
> make DEBUG_FLAGS="-g"
>
> Then re-load the vmcore file in GDB/KGDB from ports (!) and add the
> symbol files for the modules loaded. Then get the backtrace using bt
> command.
>
> BTW: Did you try drm-devel-kmod for 13-current?
>
No. I let drm-kmod select drm-current-kod. I can trying
drm-devel-kmodr. I do have an older graphics card, which
required the drm-legacy-kmod port until recently
% pciconf -vl
...
vendor = 'Advanced Micro Devices, Inc. [AMD/ATI]'
device = 'Caicos [Radeon HD 6450/7450/8450 / R5 230 OEM]'
class = display
subclass = VGA
--
Steve
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