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        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [NV94] Corruption on very long (vertical) pages in Firefox"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=90145">90145</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[NV94] Corruption on very long (vertical) pages in Firefox
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>xorg
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86-64 (AMD64)
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (All)
          </td>
        </tr>

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

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

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

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

        <tr>
          <th>Assignee</th>
          <td>nouveau@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>adamw@happyassassin.net
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>xorg-team@lists.x.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Bug seen in current Fedora 22 - kernel 4.0.0-1.fc22.x86_64 ,
xorg-x11-drv-nouveau-1.0.11-2.fc22.x86_64 ,
xorg-x11-server-common-1.17.1-9.fc22.x86_64 ,
mesa-dri-drivers-10.5.1-1.20150314.fc22.x86_64 , libdrm-2.4.59-4.fc22.x86_64 .

If I view a page with a lot of vertical scroll in Firefox - say, a long
article, or just a page with a lot of Disqus comments - after I scroll through
quite a long way, the display of the page starts corrupting.

<a href="http://www.avclub.com/article/surely-you-cant-be-serious-oral-history-airplane-218043">http://www.avclub.com/article/surely-you-cant-be-serious-oral-history-airplane-218043</a>
is a good example: it starts corrupting around the "Into The Cockpit" section.

I can scroll up to any point above the 'corruption cut off' and it will display
just fine...but if I scroll down below it, no matter how I do it (mouse wheel,
scrollbar, keys, whatever), the rendering is corrupted.

<a href="https://www.happyassassin.net/temp/nouveau_scroll_corrupt.webm">https://www.happyassassin.net/temp/nouveau_scroll_corrupt.webm</a> is a video
demonstrating the corruption.

The video adapter is a 01:00.0 VGA compatible controller [0300]: NVIDIA
Corporation G94 [GeForce 9600 GT] [10de:0622] (rev a1) ; Ben Skeggs has one of
the same model.</pre>
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