[Bug 98028] Guns of Icarus Online segfaults on startup since AMDGPU: Partially fix control flow at -O0

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98028

--- Comment #4 from Daniel Scharrer <daniel at constexpr.org> ---
Created attachment 127001
  --> https://bugs.freedesktop.org/attachment.cgi?id=127001&action=edit
R600_DEBUG=vs,tcs,tes,gs,ps,cs log

(In reply to Nicolai Hähnle from comment #3)
> I haven't been able to reproduce this with Mesa master and LLVM r283219 so
> far. Does this happen with clean re-builds?

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).

> 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.

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 :/

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/dri-devel/attachments/20161004/6d33f460/attachment-0001.html>