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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Guns of Icarus Online segfaults on startup since AMDGPU: Partially fix control flow at -O0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98028#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Guns of Icarus Online segfaults on startup since AMDGPU: Partially fix control flow at -O0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98028">bug 98028</a>
from <span class="vcard"><a class="email" href="mailto:daniel@constexpr.org" title="Daniel Scharrer <daniel@constexpr.org>"> <span class="fn">Daniel Scharrer</span></a>
</span></b>
<pre>Created <span class=""><a href="attachment.cgi?id=127001" name="attach_127001" title="R600_DEBUG=vs,tcs,tes,gs,ps,cs log">attachment 127001</a> <a href="attachment.cgi?id=127001&action=edit" title="R600_DEBUG=vs,tcs,tes,gs,ps,cs log">[details]</a></span>
R600_DEBUG=vs,tcs,tes,gs,ps,cs log
(In reply to Nicolai Hähnle from <a href="show_bug.cgi?id=98028#c3">comment #3</a>)
<span class="quote">> I haven't been able to reproduce this with Mesa master and LLVM r283219 so
> far. Does this happen with clean re-builds?</span >
Yes, all LLVM and Mesa builds were done through the package manager, starting
with an empty build directory. And I don't use ccache.
I just re-checked with an updated LLVM & Mesa and the game still crashes:
Mesa: git-0e85ff3
LLVM: r283225
I also verified that it still starts properly with amdgpu-pro (running on top
of the upstream 4.7.5 amdgpu module).
<span class="quote">> If this still happens with current LLVM and clean re-builds, please provide
> logs with R600_DEBUG=vs,tcs,tes,gs,ps,cs.
>
> The wide range of different backtraces suggests that it might be random
> memory corruption, so running under Valgrind may also be worth a shot.</span >
It does look like it. I'll get a valgrind memcheck log, but will first need to
recompile a couple of libraries because valgrind still doesn't support all the
instructions of my CPU :/</pre>
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