The bug is ubuntu's :
it is a patch picked from stable and backported #2074091
to quote Ubuntu's own explaination :
SRU Justification
Impact:
The upstream process for stable tree updates is quite similar
in scope to the Ubuntu SRU process, e.g., each patch has to
demonstrably fix a bug, and each patch is vetted by upstream
by originating either directly from a mainline/stable Linux tree or
a minimally backported form of that patch. The following upstream
stable patches should be included in the Ubuntu kernel:
upstream stable patchset 2024-07-25
Ported from the following upstream stable releases:
v6.6.35, v6.9.6
The offending patch (backported wihtout seeing it will breeak partner's
code) :
- drm/mst: Fix NULL pointer dereference at drm_dp_add_payload_part2
<---- This is the one
I don't know why i use dkms, AMD is an Ubuntu partner, i use Rocm and
wanted to use 6.2 , for other reasons my computer need kernel >6.5 , and
mesa >23.0 , so upgrade to ubuntu 24.04 seemed a good choice (instead of
hwe + other stuff)
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https://bugs.launchpad.net/bugs/2080823
Title:
6.8.0-44 breaks amdgpu-dkms 6.8.5
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