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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 - [TGL] media VME encoding GPU hang w/o i915 error state captured"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=112377">112377</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[TGL] media VME encoding GPU hang w/o i915 error state captured
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>XOrg 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>major
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>not set
          </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>dmitry.v.rogozhkin@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=146016" name="attach_146016" title="Full dmesg log">attachment 146016</a> <a href="attachment.cgi?id=146016&action=edit" title="Full dmesg log">[details]</a></span>
Full dmesg log

>From <a href="https://github.com/intel/media-driver/issues/773">https://github.com/intel/media-driver/issues/773</a>

Run:
wget <a href="https://fate-suite.libav.org/h264-conformance/AUD_MW_E.264">https://fate-suite.libav.org/h264-conformance/AUD_MW_E.264</a>
sample_multi_transcode -i::h264 AUD_MW_E.264 -hw -async 1 -u 4 -o::h264 a.h264

Stack:
*
<a href="https://github.com/intel/gmmlib/commit/f78be970a6c3aef6d0347159f9c3f250421af16c">https://github.com/intel/gmmlib/commit/f78be970a6c3aef6d0347159f9c3f250421af16c</a>
*
<a href="https://github.com/intel/media-driver/commit/1645d0f06597599393625168cc4445b0ae092219">https://github.com/intel/media-driver/commit/1645d0f06597599393625168cc4445b0ae092219</a>
*
<a href="https://github.com/Intel-Media-SDK/MediaSDK/commit/2515d8fbb65979685ce086aa5c9b24786cc2cab6">https://github.com/Intel-Media-SDK/MediaSDK/commit/2515d8fbb65979685ce086aa5c9b24786cc2cab6</a>
+ apply <a href="https://github.com/Intel-Media-SDK/MediaSDK/pull/1771">https://github.com/Intel-Media-SDK/MediaSDK/pull/1771</a>

Ran with latest drm-tip kernel:
commit 5bbbc0061acc528705e593d7e01c4c9c40b208db
Merge: e67c139 883d955
Author: Lyude Paul <<a href="mailto:lyude@redhat.com">lyude@redhat.com</a>>
Date:   Fri Nov 22 14:12:54 2019 -0500

    Merge remote-tracking branch 'drm-intel/topic/core-for-CI' into drm-tip


Essential part of dmesg (full one attached with drm.debug=0x1e):
[   77.006161] i915 0000:00:02.0: Resetting rcs0 for preemption time out
[   77.006204] i915 0000:00:02.0: sample_multi_tr[1951] context reset due to
GPU hang
[   77.006293] [drm:__i915_request_reset [i915]] client sample_multi_tr[1951]:
gained 1 ban score, now 1

i915 error state: EMPTY


Can you, please, help debug the issue from kmd stand point?

Why i915 error state is missing? is it real GPU hang or i915 bug?

Note: the above media encoder works on RCS and VCS rings, VCS tasks depend on
RCS ones.</pre>
        </div>
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