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<body><span class="vcard"><a class="email" href="mailto:t_arceri@yahoo.com.au" title="Timothy Arceri <t_arceri@yahoo.com.au>"> <span class="fn">Timothy Arceri</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - WebGL shaders cause system freeze"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101834">bug 101834</a>
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<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
</td>
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<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - WebGL shaders cause system freeze"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101834#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - WebGL shaders cause system freeze"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101834">bug 101834</a>
from <span class="vcard"><a class="email" href="mailto:t_arceri@yahoo.com.au" title="Timothy Arceri <t_arceri@yahoo.com.au>"> <span class="fn">Timothy Arceri</span></a>
</span></b>
<pre>There has been a series of changes to loop unrolling since this was reported
but this in now working and I believe the final fix was likely the following
patch as this was still crashing when I tested it before working on this fix.
It entirely possible something else fixed it but its working now so closing.
commit 56b867395dee1a48594b27987d3bf68a4e745dda
Author: Timothy Arceri <<a href="mailto:tarceri@itsqueeze.com">tarceri@itsqueeze.com</a>>
Date: Mon Mar 26 10:31:26 2018 +1100
glsl: fix infinite loop caused by bug in loop unrolling pass
Just checking for 2 jumps is not enough to be sure we can do a
complex loop unroll. We need to make sure we also have also found
2 loop terminators.
Without this we were attempting to unroll a loop where the second
jump was nested inside multiple ifs which loop analysis is unable
to detect as a terminator. We ended up splicing out the first
terminator but failed to actually unroll the loop, this resulted
in the creation of a possible infinite loop.
Fixes: 646621c66da9 "glsl: make loop unrolling more like the nir unrolling
path"
Tested-by: Gert Wollny <<a href="mailto:gw.fossdev@gmail.com">gw.fossdev@gmail.com</a>>
Reviewed-by: Ian Romanick <<a href="mailto:ian.d.romanick@intel.com">ian.d.romanick@intel.com</a>>
Bugzilla: <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [regression][hang] Trine1EE hangs GPU after loading screen on Mesa3D-17.3 and later"
href="show_bug.cgi?id=105670">https://bugs.freedesktop.org/show_bug.cgi?id=105670</a></pre>
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