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      <base href="https://bugs.freedesktop.org/" />
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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 - [bsw] execlists causes machine lockups"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=93467">93467</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[bsw] execlists causes machine lockups
          </td>
        </tr>

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

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

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

        <tr>
          <th>OS</th>
          <td>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>chris@chris-wilson.co.uk
          </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>First symptom is:

[  712.910343] clocksource: timekeeping watchdog: Marking clocksource 'tsc' as
unstable because the skew is too large:
[  712.910369] clocksource:                       'refined-jiffies' wd_now:
100019330 wd_last: 1000192b3 mask: ffffffff
[  712.910377] clocksource:                       'tsc' cs_now: 10ffb55119c
cs_last: 10fbba15ba0 mask: ffffffffffffffff
[  712.910523] clocksource: Switched to clocksource refined-jiffies

later followed by a reboot. (Don't have any logs for that yet, if at all
possible.)

The same problem does not occur with i915.enable_execlists=0.</pre>
        </div>
      </p>
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