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From:   Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
Date:   Fri, 8 Apr 2022 22:25:22 +0500
Message-ID: <CABXGCsNNwEjo_dvWJL7GLULBPy+RmwsC9ObpowR_M1nQ3fKt3g@mail.gmail.com>
Subject: Re: [Bug][5.18-rc0] Between commits ed4643521e6a and 34af78c4e616,
 appears warning "WARNING: CPU: 31 PID: 51848 at drivers/dma-buf/dma-fence-array.c:191
 dma_fence_array_create+0x101/0x120" and some games stopped working.
To:     =?UTF-8?Q?Christian_K=C3=B6nig?= <christian.koenig@amd.com>
Cc:     Ken.Xue@amd.com, "Deucher, Alexander" <alexander.deucher@amd.com>,
        amd-gfx list <amd-gfx@lists.freedesktop.org>,
        Daniel Vetter <daniel.vetter@ffwll.ch>,
        thomas.hellstrom@linux.intel.com,
        Linux List Kernel Mailing <linux-kernel@vger.kernel.org>
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On Fri, 8 Apr 2022 at 19:27, Christian K=C3=B6nig <christian.koenig@amd.com=
> wrote:
>
> Please test the attached patch, it just re-introduce the lock without
> doing much else.
>
> And does your branch contain the following patch:
>
> commit d18b8eadd83e3d8d63a45f9479478640dbcfca02
> Author: Christian K=C3=B6nig <christian.koenig@amd.com>
> Date:   Wed Feb 23 14:35:31 2022 +0100
>
>      drm/amdgpu: install ctx entities with cmpxchg
>
>      Since we removed the context lock we need to make sure that not two
> threads
>      are trying to install an entity at the same time.
>
>      Signed-off-by: Christian K=C3=B6nig <christian.koenig@amd.com>
>      Fixes: 461fa7b0ac565e ("drm/amdgpu: remove ctx->lock")
>      Reviewed-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
>      Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

The all listed games are now working with an attached patch.
Also flood messages "WARNING: CPU: 31 PID: 51848 at
drivers/dma-buf/dma-fence-array.c:191
dma_fence_array_create+0x101/0x120" has gone.

Thanks.

Tested-by: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>

--=20
Best Regards,
Mike Gavrilov.