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.

[Mikhail Gavrilov]

On Fri, 8 Apr 2022 at 19:27, Christian König <christian.koenig@xxxxxxx> 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 König <christian.koenig@xxxxxxx>
> 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 König <christian.koenig@xxxxxxx>
>      Fixes: 461fa7b0ac565e ("drm/amdgpu: remove ctx->lock")
>      Reviewed-by: Andrey Grodzovsky <andrey.grodzovsky@xxxxxxx>
>      Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>

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@xxxxxxxxx>

-- 
Best Regards,
Mike Gavrilov.