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Bug#1122106: linux-image-amd64: UBSAN create a systematic trace in DRM driver

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Hi,

Le 11/12/2025 à 15:00, Eric a écrit :
> Hi
>
> Le 11/12/2025 à 12:02, Salvatore Bonaccorso a écrit :
>> Hi,
>>
>> On Thu, Dec 11, 2025 at 10:24:42AM +0100, Eric Valette wrote:
>>> On 12/10/25 20:45, Salvatore Bonaccorso wrote:
>>>> Control: tags -1 + moreinfo
>>>>
>>>> Hi,
>>>
>>>> Alex Deucher proposed there two changes, can you test those please and
>>>> report back if they work? If so can you please directly confirm in the
>>>> upstream issue which fixes it and report back here as well?
>>>
>>> Well. Compiling a debian kernel on this machine will requires 
>>> several hours.
>>> Will eventually do. I will report if I do.
>> FWIW, if you come to it, the following should help to just make a
>> build with a patch on top:
>>
>> https://kernel-team.pages.debian.net/kernel-handbook/ch-common-tasks.html#id-1.6.6.4 
>>
> Thanks for this. I'll give it a try and report here.
So, I tried both patches. The first failed to compile with this message :


In file included from drivers/gpu/drm/radeon/atombios.h:7979,

                  from drivers/gpu/drm/radeon/atom.h:165,
                  from drivers/gpu/drm/radeon/radeon_device.c:48:
drivers/gpu/drm/radeon/pptable.h:453:11: error: ‘counted_by’ argument is 
not an identifier
   453 |     UCHAR clockInfo[] __counted_by(ucNumEntries * ucEntrySize);
       |           ^~~~~~~~~
make[9]: *** [scripts/Makefile.build:292: 
drivers/gpu/drm/radeon/radeon_device.o] Error 1
make[8]: *** [scripts/Makefile.build:561: drivers/gpu/drm/radeon] Error 2
make[8]: *** Attente des tâches non terminées....
make[7]: *** [scripts/Makefile.build:561: drivers/gpu/drm] Error 2
make[6]: *** [scripts/Makefile.build:561: drivers/gpu] Error 2
make[6]: *** Attente des tâches non terminées....
make[5]: *** [scripts/Makefile.build:561: drivers] Error 2
make[4]: *** [Makefile:2035: .] Error 2
make[3]: *** [debian/rules:80: build-arch] Error 2
dpkg-buildpackage: erreur: le sous-processus make -f debian/rules binary 
a retourné l’état de sortie 2
make[2]: *** [scripts/Makefile.package:126: bindeb-pkg] Error 2
make[1]: *** [/home/eric/linux-6.17.9/Makefile:1667: bindeb-pkg] Error 2

make: *** [Makefile:260: __sub-make] Error 2


The second patch suppressed the message.


>>
>> Regards,
>> Salvatore
>>
Regards


Eric Dégenètais

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Bug#1122106: linux-image-amd64: UBSAN create a systematic trace in DRM driver Eric Valette <eric.valette@free.fr> - 2025-12-07 12:10 +0100
  Bug#1122106: linux-image-amd64: UBSAN create a systematic trace in DRM driver Salvatore Bonaccorso <carnil@debian.org> - 2025-12-10 20:50 +0100
  Processed: Re: Bug#1122106: linux-image-amd64: UBSAN create a  systematic trace in DRM driver "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-12-10 20:50 +0100
  Bug#1122106: linux-image-amd64: UBSAN create a systematic trace in DRM driver Eric <eric.4.debian@grabatoulnz.fr> - 2025-12-12 05:10 +0100
    Bug#1122106: linux-image-amd64: UBSAN create a systematic trace in DRM driver Eric <eric.4.debian@grabatoulnz.fr> - 2025-12-14 17:10 +0100
  Bug#1122106: marked as done (linux-image-amd64: UBSAN create a  systematic trace in DRM driver) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-01-15 18:10 +0100

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