[Bug 75005] "Upvoid" segfault in radeonsi/llvm

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=75005

--- Comment #4 from Christoph Haag <haagch.christoph@googlemail.com> ---
Created attachment 94690
  --> https://bugs.freedesktop.org/attachment.cgi?id=94690&action=edit
GPU fault after it sort of works with patch from #3

Well.

At least initially it does not crash anymore. It does start now. Nice!

The problems begin very quickly after gameplay with GPU faults in the attached
dmesg. Amazingly it keeps running with decent FPS for some time while these GPU
faults are dumped into the log. But eventually the system will hard lockup (I
got to 160 MB log before the lockup so I arbitrarily trimmed after the first
few GPU fault messages).
This was with R600_DEBUG=nohyperz, by the way.



I have also once seen another segfault in radeonsi, but I didn't have debug
symbols at that time and haven't reproduced it with debug symbols now, because
the hard lockup after a few seconds of gameplay is a bit annoying when trying
to reproduce something. :)
Maybe I can give a better backtrace later, but maybe it's unrelated.

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