[Bug 107762] [Intel GFX CI] *ERROR* ring sdma0 timeout, signaled seq=137, emitted seq=137

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107762

--- Comment #7 from Michel Dänzer <michel at daenzer.net> ---
(In reply to Martin Peres from comment #4)
> However, if it is scheduler bug, I would assume this issue to be
> reproducible on any AMD GPU. Can you try running
> igt at amdgpu/amd_cs_nop at sync-fork-gfx0 in a loop for an hour or so?

Hmm, 'fork' sounded suspicious, and indeed AFAICT this test uses the same
amdgpu_context_handle (and by extension the same DRM file descriptor) in
multiple processes spawned by fork(). I'm afraid Christian is going to explain
why that's not supported. :)

I suppose we should at least handle this more gracefully though, if possible.

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