<html>
<head>
<base href="https://bugs.freedesktop.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Guns of Icarus Online segfaults on startup since AMDGPU: Partially fix control flow at -O0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98028">98028</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Guns of Icarus Online segfaults on startup since AMDGPU: Partially fix control flow at -O0
</td>
</tr>
<tr>
<th>Product</th>
<td>Mesa
</td>
</tr>
<tr>
<th>Version</th>
<td>git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>Drivers/Gallium/radeonsi
</td>
</tr>
<tr>
<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>daniel@constexpr.org
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>dri-devel@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=126970" name="attach_126970" title="Short Guns of Icarus Online startup trace (truncated by segfault)">attachment 126970</a> <a href="attachment.cgi?id=126970&action=edit" title="Short Guns of Icarus Online startup trace (truncated by segfault)">[details]</a></span>
Short Guns of Icarus Online startup trace (truncated by segfault)
Guns of Icarus Online segfaults (or sometimes hangs) on startup with current
Mesa and LLVM. I have bisected the segfault to LLVM r282667.
The backtraces for the segfaults vary. Some of the segfaults are inside malloc
/ free, indicating possible memory corruption.
I have attached an apitrace recorded using a bad LLVM revision. While the game
consistently segfaults (or hangs), replaying the trace does not result in a
segfault every time.
Here is also a longer trace of the full startup sequence recorded using a good
LLVM revision:
<a href="http://constexpr.org/tmp/GoIO-radeonsi.2.trace.xz">http://constexpr.org/tmp/GoIO-radeonsi.2.trace.xz</a> (82 MiB)
GPU: R9 380X
Kernel: 4.7.5-gentoo
Mesa: git-024c207
LLVM: r283076</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>