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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Flightgear crashes during splashboot with R600 driver and mesa 11.0.2"
href="https://bugs.freedesktop.org/show_bug.cgi?id=92214#c10">Comment # 10</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Flightgear crashes during splashboot with R600 driver and mesa 11.0.2"
href="https://bugs.freedesktop.org/show_bug.cgi?id=92214">bug 92214</a>
from <span class="vcard"><a class="email" href="mailto:sroland@vmware.com" title="Roland Scheidegger <sroland@vmware.com>"> <span class="fn">Roland Scheidegger</span></a>
</span></b>
<pre>Some very quick search turned up this bug, which looks like it could be a
winner: <a href="https://bugs.archlinux.org/task/43010">https://bugs.archlinux.org/task/43010</a>
Seems some libpthread implementations will try to call hw lock elision
instructions on cpus where lock elision isn't supported, but _only_ if unlock
is called on an already unlocked lock (so the calling code is buggy which is
why it's a won't fix in libpthread).
Debug information for libpthread would be nice, or you could disassemble in gdb
when it crashes to confirm it's actually calling that.
I have no idea where that bug could be but should be worthwile to track it
down, normally you don't get the luxury of a straight neat crash when the
locking is wrong...</pre>
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