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    <body><span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span> changed
              <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - [SNA G33/31] Segfault with "xrandr --output VGA1 --scale 2x2""
   href="https://bugs.freedesktop.org/show_bug.cgi?id=79320">bug 79320</a>
        <br>
             <table border="1" cellspacing="0" cellpadding="8">
          <tr>
            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
          </tr>

         <tr>
           <td style="text-align:right;">Status</td>
           <td>NEW
           </td>
           <td>RESOLVED
           </td>
         </tr>

         <tr>
           <td style="text-align:right;">Resolution</td>
           <td>---
           </td>
           <td>FIXED
           </td>
         </tr></table>
      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - [SNA G33/31] Segfault with "xrandr --output VGA1 --scale 2x2""
   href="https://bugs.freedesktop.org/show_bug.cgi?id=79320#c2">Comment # 2</a>
              on <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - [SNA G33/31] Segfault with "xrandr --output VGA1 --scale 2x2""
   href="https://bugs.freedesktop.org/show_bug.cgi?id=79320">bug 79320</a>
              from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
        <pre>commit 916354164bcb149e1323a3219d85e7bba6e61e04
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date:   Tue May 27 20:16:55 2014 +0100

    sna: Fix the depth/format on the temporary shadow Pictures

    When scaling the output, we re-render onto the scanout using a call to
    Composite, for which we create temporary Pictures. In most cases, the
    mismatching depth/format goes unnoticed, but along one particular
    fallback path, we use those to create a new Picture but the mismatching
    format results in a segfault.

    Reported-by: Matti Hämäläinen <<a href="mailto:ccr@tnsp.org">ccr@tnsp.org</a>>
    Bugzilla: <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - [SNA G33/31] Segfault with "xrandr --output VGA1 --scale 2x2""
   href="show_bug.cgi?id=79320">https://bugs.freedesktop.org/show_bug.cgi?id=79320</a>
    Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>

commit d8360bd74f5b62a27c019c65ed9001cac8bf43ed
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date:   Tue May 27 20:14:02 2014 +0100

    sna: Handle bad picture format/depth mismatches

    Scaling the output feed in an invalid picture->format/depth combination
    which causes the fallback downsampling function to explode. Whilst this
    is a bug in the higher layer, we can handle the error anyway.

    References: <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - [SNA G33/31] Segfault with "xrandr --output VGA1 --scale 2x2""
   href="show_bug.cgi?id=79320">https://bugs.freedesktop.org/show_bug.cgi?id=79320</a>
    Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>></pre>
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