linux-kernel - 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.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CABXGCsNNwEjo_dvWJL7GLULBPy+RmwsC9ObpowR_M1nQ3fKt3g@mail.gmail.com>
Date:   Fri, 8 Apr 2022 22:25:22 +0500
From:   Mikhail Gavrilov <mikhail.v.gavrilov@...il.com>
To:     Christian König <christian.koenig@....com>
Cc:     Ken.Xue@....com, "Deucher, Alexander" <alexander.deucher@....com>,
        amd-gfx list <amd-gfx@...ts.freedesktop.org>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        thomas.hellstrom@...ux.intel.com,
        Linux List Kernel Mailing <linux-kernel@...r.kernel.org>
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.

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

-- 
Best Regards,
Mike Gavrilov.