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<base href="https://bugs.freedesktop.org/" />
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<th>Priority</th>
<td>medium
</td>
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<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Unreal Engine "Effects Cave" Demo crashes in __memcpy_sse2_unaligned"
href="https://bugs.freedesktop.org/show_bug.cgi?id=81907">81907</a>
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
</tr>
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<th>Summary</th>
<td>Unreal Engine "Effects Cave" Demo crashes in __memcpy_sse2_unaligned
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Reporter</th>
<td>haagch@frickel.club
</td>
</tr>
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<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Version</th>
<td>git
</td>
</tr>
<tr>
<th>Component</th>
<td>Drivers/Gallium/radeonsi
</td>
</tr>
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<th>Product</th>
<td>Mesa
</td>
</tr></table>
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<pre>Created <span class=""><a href="attachment.cgi?id=103673" name="attach_103673" title="full backtrace">attachment 103673</a> <a href="attachment.cgi?id=103673&action=edit" title="full backtrace">[details]</a></span>
full backtrace
llvm-svn 214022
mesa git master from today without f4b0ab7afd83c811329211eae8167c9bf238870c
linux 3.16-rc7
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor
Graphics Controller (rev 09)
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Wimbledon XT [Radeon HD 7970M] (rev ff)
intel with render nodes, tearfree and DRI3 and I run it with DRI_PRIME=1.
Because of <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - TGSI constant buffer overrun causes assertion failure"
href="show_bug.cgi?id=81834">bug 81834</a> I reverted f4b0ab7afd83c811329211eae8167c9bf238870c.
Now I get this crash in the "Effects Cave" demo of the unreal engine. More
rarely (?) I get <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED --- - Unreal Engine 4 demos fail GLSL compiler assertion"
href="show_bug.cgi?id=80880">bug 80880</a> instead/first. In other demos (perhaps less complex)
like TappyChicken I always get <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED --- - Unreal Engine 4 demos fail GLSL compiler assertion"
href="show_bug.cgi?id=80880">bug 80880</a> and never (?) this crash here:
0x00007ffff6a15859 in __memcpy_sse2_unaligned () from /usr/lib/libc.so.6
It seems to run for a few seconds, the music is playing, but the window
contents are black (it seems nothing at all is rendered, sometimes there are
white stripes that do not vanish until it crashes). Then it crashes with the
attached backtrace.
The "binary" struct seem to be always one of the same few. Others are:
binary = {code = 0x7fffb9ced270
"~\n\376\276\t\003\374\276\002\003\002\310\002\002\006\310\001\001", code_size
= 76, config = 0x7fffb9cf1a90 "(\260", config_size = 24, rodata = 0x0,
rodata_size = 0, disassembled = 0}
and
binary = {code = 0x7fffb9f85a10 "~\n\376\276\t", <incomplete sequence
\374\276>, code_size = 4160, config = 0x7fffb9e33840 "(\260", config_size = 24,
rodata = 0x0, rodata_size = 0, disassembled = 0}</pre>
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