linux-kernel - Re: build failure of next-20220920 due to c2b08e7a6d27 ("drm/amdgpu: move entity selection and job init earlier during CS")

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Message-ID: <dafdf6a1-9390-3589-0177-ff7b361f3cb4@amd.com>
Date:   Tue, 20 Sep 2022 14:12:07 +0200
From:   Christian König <christian.koenig@....com>
To:     Sudip Mukherjee <sudipm.mukherjee@...il.com>,
        Alex Deucher <alexander.deucher@....com>
Cc:     "Pan, Xinhui" <Xinhui.Pan@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        Philip Yang <Philip.Yang@....com>,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
        linaro-mm-sig@...ts.linaro.org, linux-next@...r.kernel.org,
        Nathan Chancellor <nathan@...nel.org>, llvm@...ts.linux.dev
Subject: Re: build failure of next-20220920 due to c2b08e7a6d27 ("drm/amdgpu:
 move entity selection and job init earlier during CS")

Thanks for pointing this out! It's indeed quite a bug.

Going to send a patch ASAP.

Regards,
Christian.

Am 20.09.22 um 13:47 schrieb Sudip Mukherjee:
> Hi All,
>
> The builds of arm64 allmodconfig with clang failed to build next-20220920
> with the error:
>
> drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c:1190:3: error: variable 'r' is uninitialized when used here [-Werror,-Wuninitialized]
>                  r |= !amdgpu_ttm_tt_get_user_pages_done(bo->tbo.ttm);
>                  ^
> drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c:1171:7: note: initialize the variable 'r' to silence this warning
>          int r;
>               ^
>                = 0
> 1 error generated.
>
>
> git bisect pointed to c2b08e7a6d27 ("drm/amdgpu: move entity selection and job init earlier during CS")
>
> I will be happy to test any patch or provide any extra log if needed.
>
>