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

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Message-ID: <CADnq5_Minarw2D_TeRdkm6nJOP_4qHM+MxiMeLWMXqHxjq22Xw@mail.gmail.com>
Date:   Thu, 2 Nov 2023 12:52:30 -0400
From:   Alex Deucher <alexdeucher@...il.com>
To:     "Sudip Mukherjee (Codethink)" <sudipm.mukherjee@...il.com>
Cc:     Rodrigo Siqueira <Rodrigo.Siqueira@....com>,
        Roman Li <roman.li@....com>,
        Qingqing Zhuo <Qingqing.Zhuo@....com>,
        Alex Deucher <alexander.deucher@....com>,
        regressions@...ts.linux.dev, Leo Li <sunpeng.li@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>, linux-kernel@...r.kernel.org,
        amd-gfx@...ts.freedesktop.org,
        "linux-kernel@...r.kernel.orgLinus Torvalds" 
        <torvalds@...ux-foundation.org>, dri-devel@...ts.freedesktop.org,
        Christian König <christian.koenig@....com>
Subject: Re: mainline build failure due to 7966f319c66d ("drm/amd/display:
 Introduce DML2")

On Thu, Nov 2, 2023 at 5:32 AM Sudip Mukherjee (Codethink)
<sudipm.mukherjee@...il.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