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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] WebProcess from WebKitGtk+ 2.12.3 SIGSEVs in WTF::RefPtr&lt;WebKit::SharedMemory&gt;::* () from a call in WebKit::ShareableBitmap::isBackedBySharedMemory ()"
   href="https://bugs.webkit.org/show_bug.cgi?id=158981">158981</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[GTK] WebProcess from WebKitGtk+ 2.12.3 SIGSEVs in WTF::RefPtr&lt;WebKit::SharedMemory&gt;::* () from a call in WebKit::ShareableBitmap::isBackedBySharedMemory ()
          </td>
        </tr>

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

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

        <tr>
          <th>Version</th>
          <td>WebKit Nightly Build
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Unspecified
          </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>agomez&#64;igalia.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>bugs-noreply&#64;webkitgtk.org
          </td>
        </tr></table>
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        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=281726" name="attach_281726" title="BT from gdb">attachment 281726</a> <a href="attachment.cgi?id=281726&amp;action=edit" title="BT from gdb">[details]</a></span>
BT from gdb

I'm using WebKitGtk+ with my own JHBuild setting:
<a href="https://github.com/tanty/jhbuild-epiphany/tree/master">https://github.com/tanty/jhbuild-epiphany/tree/master</a>

Epiphany 3.20.1 and WebKit 2.12.3

I'm running Epiphany with the dconf key:

&quot;process-model&quot; = &quot;shared-secondary-process&quot;

The compilation was done with CMake args:

'-DPORT=GTK -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_FLAGS_RELEASE=&quot;-O0 -g1 -DNDEBUG -DG_DISABLE_CAST_CHECKS&quot; -DCMAKE_CXX_FLAGS_RELEASE=&quot;-O0 -g1 -DNDEBUG -DG_DISABLE_CAST_CHECKS&quot;'

When visiting several pages, some with the flash content played with plugins, eventually, WebKitWebProcess hits a SIGSEV.

This bug is not reproducible in a predictable way.</pre>
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