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<base href="https://bugs.freedesktop.org/" />
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<th>Priority</th>
<td>medium
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<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [-next] nouveau corrupts kernel mm allocator"
href="https://bugs.freedesktop.org/show_bug.cgi?id=58087">58087</a>
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<th>Assignee</th>
<td>nouveau@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[-next] nouveau corrupts kernel mm allocator
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>xorg-team@lists.x.org
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Reporter</th>
<td>peter@hurleysoftware.com
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>Driver/nouveau
</td>
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<th>Product</th>
<td>xorg
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=71269" name="attach_71269" title="kernel log showing BUG triggered by nouveau">attachment 71269</a> <a href="attachment.cgi?id=71269&action=edit" title="kernel log showing BUG triggered by nouveau">[details]</a></span>
kernel log showing BUG triggered by nouveau
If nouveau_vm_new() fails in nouveau_drm_open(), the cleanup triggered corrupts
the kernel slab allocator (in this case, SLUB).
Attached is the kernel log showing the page allocation failure and the
subsequent BUG in mm/slub.c
A similar corruption had previously occurred which triggered a GP fault in the
mm allocator from the same code path. This was reported as kernel <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Segfault with mplayer -vo vdpau: vlVdpVideoSurfaceClear at surface.c:366"
href="show_bug.cgi?id=51291">bug #51291</a>
here
<a href="https://bugzilla.kernel.org/show_bug.cgi?id=51291">https://bugzilla.kernel.org/show_bug.cgi?id=51291</a></pre>
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