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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - hud_context.c: possible NULL-pointer dereference"
href="https://bugs.freedesktop.org/show_bug.cgi?id=88882">88882</a>
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<th>Summary</th>
<td>hud_context.c: possible NULL-pointer dereference
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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>Other
</td>
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<th>OS</th>
<td>All
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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/radeonsi
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
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<th>Reporter</th>
<td>xypron.glpk@gmx.de
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<th>QA Contact</th>
<td>dri-devel@lists.freedesktop.org
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<p>
<div>
<pre>In
mesa/src/gallium/auxiliary/hud/hud_context.c
we find the following code
case ',':
env++;
y += height + hud->font.glyph_height * (pane->num_graphs + 2);
if (pane && pane->num_graphs) {
LIST_ADDTAIL(&pane->head, &hud->pane_list);
pane = NULL;
}
break;
pane is checked for being NULL. So obviously we expect NULL as possible value.
But we use pane->num_graphs before the check. This is possibly a NULL-pointer
dereference.
The problem was indicated by cppcheck
<a href="http://cppcheck.sourceforge.net/">http://cppcheck.sourceforge.net/</a>
Best regards
Heinrich Schuchardt</pre>
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