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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - clGetPlatformIDs causes futex race condition"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94040#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - clGetPlatformIDs causes futex race condition"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94040">bug 94040</a>
from <span class="vcard"><a class="email" href="mailto:bob@bob131.so" title="bob@bob131.so">bob@bob131.so</a>
</span></b>
<pre>User-Agent: Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:41.0)
Gecko/20100101 Firefox/41.0
Build Identifier:
Apologies if I've mischaracterised anything above, I'm going off of my
uninformed analysis of the attached backtrace from GDB.
Attempting to use Blender in any meaningful way results in the UI hanging.
strace clued me into the blocking futex call and gdb seems to point the finger
at libOpenCL.so.
Oddly enough, clinfo works as it should
Reproducible: Always
Steps to Reproduce:
1. Open Blender
2. Open system tab of preferences panel, switch to the Cycles renderer etc
Actual Results:
UI freeze, application hang
Expected Results:
Application doesn't hang
rpm -q fedora-release
fedora-release-23-0.17.noarch
rpm -q blender
blender-2.75-4.fc23.x86_64
rpm -q ocl-icd
ocl-icd-2.2.7-2.git20150606.ebbc4c1.fc23.x86_64</pre>
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