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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: Half Life 2 random crashes since 56e95d3c"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=58012">58012</a>
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>mesa-dev@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Regression: Half Life 2 random crashes since 56e95d3c
          </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>stefandoesinger@gmx.at
          </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>Mesa core
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>Mesa
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Half Life 2 running in Wine crashes randomly on r300g. This is a regression. A
bisect found this patch:

56e95d3ca231110188e5b910f4e17104f3176d52 is the first bad commit
commit 56e95d3ca231110188e5b910f4e17104f3176d52
Author: Jordan Justen <<a href="mailto:jordan.l.justen@intel.com">jordan.l.justen@intel.com</a>>
Date:   Tue Dec 4 01:24:07 2012 -0800

    mesa: validate that sync objects were created by mesa

    Previously, the user could send in a pointer that was not created
    by mesa. When we dereferenced that pointer, there would be an
    exception.

    Now we keep a set of pointers and verify that the pointer
    exists in that set before dereferencing it.

    Note: This fixes several crashing gles3conform tests.

    Signed-off-by: Jordan Justen <<a href="mailto:jordan.l.justen@intel.com">jordan.l.justen@intel.com</a>>
    Reviewed-by: Brian Paul <<a href="mailto:brianp@vmware.com">brianp@vmware.com</a>>

:040000 040000 d03812977c473d92fc0a9cb51844333cac23a441
9a2b9f9ab2ed82e2381f319fb60e7bfcbe7b6782 M      src

Thanks to Steam's crash handler it is tricky to get a backtrace. I managed to
get some backtraces with function names but without source code references, and
it appears that the crashes occur in various functions deleting GL objects -
ARB shaders, VBOs, textures, maybe others.

Half Life 2 also crashes on r600g, but I have not yet checked if it is caused
by the same patch.</pre>
        </div>
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