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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [Regression] Screen corruption in Chromium"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=68964">68964</a>
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>chris@chris-wilson.co.uk
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[Regression] Screen corruption in Chromium
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

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

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>bay@hackerdom.ru
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Other
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>git
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Driver/intel
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>xorg
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=85224" name="attach_85224" title="The screenshot">attachment 85224</a> <a href="attachment.cgi?id=85224&action=edit" title="The screenshot">[details]</a></span>
The screenshot

This happens 4-5 times per day on average. Screen corrupts not only in
chromium, but also randomly in KDE workspace.

This happens especially often on <a href="http://cloud.feedly.com/">http://cloud.feedly.com/</a> site.

Git bisect says that the first bad commit is
d935912d9c13ec8cf4f641c55846714d4e9ba929, 2013-07-09, sna: Free the source
reference after performing a BLT composite, -6/+14.

Reverting this commit in git master fixes this bug, but, probably, causes a
memory leak(<a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - [sna] Memory leak in commit "sna: Flush blt copies if no operations pending""
   href="show_bug.cgi?id=66742">bug 66742</a>).</pre>
        </div>
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