Messages in this thread |  | | Date | Sat, 9 Apr 2022 16:27:17 +0200 | 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. | From | Christian König <> |
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Am 08.04.22 um 19:25 schrieb Mikhail Gavrilov: > On Fri, 8 Apr 2022 at 19:27, Christian König <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 König <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 König <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.
That's unfortunately not the end of the story.
This is fixing your problem, but reintroducing the original problem that we call the syncobj with a lock held which can crash badly as well.
Going to take a closer look on Monday. I hope you can test a few more patches to help narrow down what's actually going wrong here.
Thanks, Christian.
> > Thanks. > > Tested-by: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com> >
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