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

[Eric <eric.4.debian@grabatoulnz.fr>]

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,
> > Hi. Thanks for taking time looking at this (cosmetic if really false
> > positive) bug.
> >
> > > There is an upstream report which seems to match:
> > > https://gitlab.freedesktop.org/drm/amd/-/issues/4374
> > Yes this look the same. The good point is that it seems to be a false
> > positive and browsing internet it appeared already on much older kernels...
> >
> > > 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.
> Regards,
> Salvatore


Regards


Eric Degenetais