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      <base href="https://bugs.webkit.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [GTK] Crash in WebCore::GLContextGLX::defaultFrameBufferSize"
   href="https://bugs.webkit.org/show_bug.cgi?id=149568">149568</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[GTK] Crash in WebCore::GLContextGLX::defaultFrameBufferSize
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>Other
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>WebKit Gtk
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>mcatanzaro&#64;igalia.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Full backtrace downstream. Notable:

        msg = 0x55dfb73b3690 &quot;The program 'WebKitWebProcess' received an X Window System error.\nThis probably reflects a bug in the program.\nThe error was 'BadDrawable (invalid Pixmap or Window parameter)'.\n  (Details: serial 581 &quot;...

So the rest of this backtrace is surely irrelevant, but I'll post it anyway....

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 _g_log_abort at gmessages.c:316
 #8 XGetGeometry at GetGeom.c:47
 #9 WebCore::GLContextGLX::defaultFrameBufferSize at /usr/src/debug/webkitgtk-2.9.5/Source/WebCore/platform/graphics/glx/GLContextGLX.cpp:189
 #10 WebKit::LayerTreeHostGtk::compositeLayersToContext at /usr/src/debug/webkitgtk-2.9.5/Source/WebKit2/WebProcess/WebPage/gtk/LayerTreeHostGtk.cpp:285
 #11 WebKit::LayerTreeHostGtk::flushAndRenderLayers at /usr/src/debug/webkitgtk-2.9.5/Source/WebKit2/WebProcess/WebPage/gtk/LayerTreeHostGtk.cpp:318
 #12 WebKit::LayerTreeHostGtk::layerFlushTimerFired at /usr/src/debug/webkitgtk-2.9.5/Source/WebKit2/WebProcess/WebPage/gtk/LayerTreeHostGtk.cpp:237
 #13 std::function&lt;void ()&gt;::operator()() const at /usr/include/c++/5.1.1/functional:2271
 #14 WTF::GMainLoopSource::voidCallback at /usr/src/debug/webkitgtk-2.9.5/Source/WTF/wtf/glib/GMainLoopSource.cpp:365
 #15 WTF::GMainLoopSource::voidSourceCallback at /usr/src/debug/webkitgtk-2.9.5/Source/WTF/wtf/glib/GMainLoopSource.cpp:456
 #20 WTF::RunLoop::run at /usr/src/debug/webkitgtk-2.9.5/Source/WTF/wtf/glib/RunLoopGLib.cpp:67</pre>
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      </p>
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