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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 - [BAT BSW] lockdep splat in drm_gem_mmap"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=94759">94759</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[BAT BSW] lockdep splat in drm_gem_mmap
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>DRI
          </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>DRM/Intel
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>joonas.lahtinen@linux.intel.com
          </td>
        </tr>

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

        <tr>
          <th>CC</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=122637" name="attach_122637" title="dmesg from I-G-T run">attachment 122637</a> <a href="attachment.cgi?id=122637&action=edit" title="dmesg from I-G-T run">[details]</a></span>
dmesg from I-G-T run

At:
/archive/results/CI_IGT_test/Patchwork_1712/bsw-nuc-2/html/bsw-nuc-2@Patchwork_1712@1/igt@<a href="mailto:gem_exec_basic@gtt-blt.html">gem_exec_basic@gtt-blt.html</a>

Log beginning (full log attached):
[  149.921578] ======================================================
[  149.921640] [ INFO: possible circular locking dependency detected ]
[  149.921703] 4.5.0-gfxbench+ #1 Not tainted
[  149.921745] -------------------------------------------------------
[  149.921807] gem_exec_basic/5896 is trying to acquire lock:
[  149.921861]  (&dev->struct_mutex){+.+.+.}, at: [<ffffffff81514ea1>]
drm_gem_mmap+0x1a1/0x270
[  149.921969] 
but task is already holding lock:
[  149.922027]  (&mm->mmap_sem){++++++}, at: [<ffffffff8117d8c4>]
vm_mmap_pgoff+0x44/0xa0
[  149.922125] 
which lock already depends on the new lock.</pre>
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