mainline build failure due to 7966f319c66d ("drm/amd/display: Introduce DML2")

[Alex Deucher]

On Thu, Nov 2, 2023 at 5:32 AM Sudip Mukherjee (Codethink)
<sudipm.mukherjee at gmail.com> wrote:
>
> Hi All,
>
> The latest mainline kernel branch fails to build x86_64 allmodconfig
> with the error:
>
> drivers/gpu/drm/amd/amdgpu/../display/dc/dml2/display_mode_core.c: In function 'dml_prefetch_check':
> drivers/gpu/drm/amd/amdgpu/../display/dc/dml2/display_mode_core.c:6707:1: error: the frame size of 2056 bytes is larger than 2048 bytes [-Werror=frame-larger-than=]
>  6707 | }
>       | ^
>
> git bisect pointed to 7966f319c66d ("drm/amd/display: Introduce DML2")
>
> I will be happy to test any patch or provide any extra log if needed.

This was reported earlier and fixed by:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=089dbf6a06f1dcaeed4f8b86d619e8d28b235207
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b141fa036c901303ca5659cc22e9c08f8b097892
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5b2c54e0d0ea09f7a3b500510731878326e1117e
but I guess maybe different compiler versions are still hitting this.

Alex

>
> #regzbot introduced: 7966f319c66d9468623c6a6a017ecbc0dd79be75
>
> --
> Regards
> Sudip