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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [r600g] llvm crash because of use of uninitialized stack"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93447">93447</a>
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<th>Summary</th>
<td>[r600g] llvm crash because of use of uninitialized stack
</td>
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<th>Product</th>
<td>Mesa
</td>
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<th>Version</th>
<td>git
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>Drivers/Gallium/r600
</td>
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
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<th>Reporter</th>
<td>notasas@gmail.com
</td>
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<th>QA Contact</th>
<td>dri-devel@lists.freedesktop.org
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=120595" name="attach_120595" title="hack patch">attachment 120595</a> <a href="attachment.cgi?id=120595&action=edit" title="hack patch">[details]</a></span>
hack patch
When replaying traces from <a class="bz_bug_link
bz_status_NEW "
title="NEW - [APITRACE] SOMA have serious graphical errors"
href="show_bug.cgi?id=92229">Bug 92229</a> with R600_DEBUG=llvm specified a crash
will occur (on my system) in LLVMBuildInsertElement() because uninitialized
value in Index argument is passed. That value originates from
radeon_llvm_emit_prepare_cube_coords() function's coords[3] stack variable. At
that time,
opcode = TGSI_OPCODE_TEX
target = TGSI_TEXTURE_CUBE
so nothing ever sets coords[3], which is copied to the caller and eventually
finds it way to llvm.
Unfortunately I don't have any knowledge about that code, I hope somebody who
knows more can take a look. A hack patch is attached but it's most likely
wrong.</pre>
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