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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 - [skl] assertion hits"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=111197">111197</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[skl] assertion hits
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>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>Driver/intel
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>chris@chris-wilson.co.uk
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>jirislaby@gmail.com
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=144850" name="attach_144850" title="xorg 0 log">attachment 144850</a> <a href="attachment.cgi?id=144850&action=edit" title="xorg 0 log">[details]</a></span>
xorg 0 log

Being at git rev 60022507.

After switching debug on, I see:
<span class="quote">> #4  0x0000558446930cc6 in FatalError (f=f@entry=0x7fbd6f1abb47 "%s:%d assertion '%s' failed\n") at log.c:1017
> #5  0x00007fbd6f15eb26 in sna_dri2_schedule_swap (client=0x55844816a690, draw=0x558448288e80, front=0x5584479cb840, back=0x55844831e2d0, target_msc=0x7ffd3af4bf88, divisor=0, remainder=0, func=0x5584468f57c0 <DRI2SwapEvent>, data=0x558448288e80) at sna_dri2.c:3321
> #6  0x00005584468f490d in DRI2SwapBuffers (client=client@entry=0x55844816a690, pDraw=0x558448288e80, target_msc=<optimized out>, divisor=0, remainder=0, swap_target=swap_target@entry=0x7ffd3af4c028, func=0x5584468f57c0 <DRI2SwapEvent>, data=0x558448288e80) at dri2.c:1182
> #7  0x00005584468f5d5a in ProcDRI2SwapBuffers (client=0x55844816a690) at dri2ext.c:424
> #8  ProcDRI2Dispatch (client=0x55844816a690) at dri2ext.c:621
> #9  0x00005584467ce4b4 in Dispatch () at dispatch.c:478
> #10 0x00005584467d24c8 in dix_main (argc=14, argv=0x7ffd3af4c218, envp=<optimized out>) at main.c:280</span >

and

<span class="quote">> #4  0x0000556e73825cc6 in FatalError (f=f@entry=0x7f2a22406b47 "%s:%d assertion '%s' failed\n") at log.c:1017
> #5  0x00007f2a223b9656 in sna_dri2_schedule_swap (client=0x556e757ca770, draw=0x556e75a46920, front=0x556e75953790, back=0x556e758c4780, target_msc=0x7ffc60457a88, divisor=0, remainder=0, func=0x556e737ea7c0 <DRI2SwapEvent>, data=0x556e75a46920) at sna_dri2.c:3316
> #6  0x0000556e737e990d in DRI2SwapBuffers (client=client@entry=0x556e757ca770, pDraw=0x556e75a46920, target_msc=<optimized out>, divisor=0, remainder=0, swap_target=swap_target@entry=0x7ffc60457b28, func=0x556e737ea7c0 <DRI2SwapEvent>, data=0x556e75a46920) at dri2.c:1182
> #7  0x0000556e737ead5a in ProcDRI2SwapBuffers (client=0x556e757ca770) at dri2ext.c:424
> #8  ProcDRI2Dispatch (client=0x556e757ca770) at dri2ext.c:621
> #9  0x0000556e736c34b4 in Dispatch () at dispatch.c:478
> #10 0x0000556e736c74c8 in dix_main (argc=14, argv=0x7ffc60457d18, envp=<optimized out>) at main.c:280</span ></pre>
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      </p>


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