<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 - Crash in u_transfer_unmap_vtbl when unmapping a buffer mapped in different context"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97894">97894</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Crash in u_transfer_unmap_vtbl when unmapping a buffer mapped in different context
</td>
</tr>
<tr>
<th>Product</th>
<td>Mesa
</td>
</tr>
<tr>
<th>Version</th>
<td>git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (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>jlegg@feralinteractive.com
</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=126724" name="attach_126724" title="Apitrace reproducing issue">attachment 126724</a> <a href="attachment.cgi?id=126724&action=edit" title="Apitrace reproducing issue">[details]</a></span>
Apitrace reproducing issue
The following sequence of events cause a crash on radeonsi:
1. Create two contexts in the same share group
2. In one of the contexts, create and map a buffer. Then delete that context.
3. Create another context in the share group
4. Cause the buffer to be unmapped in the new context (either explicitly with
glUnmapBuffer/glUnmapNamedBuffer or implicitly via glDeleteBuffers).
The attached apitrace reproduces the issue when using an AMD R9 270, unless
environment variable LIBGL_ALWAYS_SOFTWARE is set to 1.
I reproduced this using Mesa git 36f0f0318275f65f8744ec6f9471702e2f58e6d5 and
the 12.0.3 release on x86_64 Fedora 24.
My OpenGL renderer string is Gallium 0.4 on AMD PITCAIRN (DRM 2.45.0 /
4.7.2-201.fc24.x86_64, LLVM 3.9.0).</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>