<html>
    <head>
      <base href="https://bugs.freedesktop.org/" />
    </head>
    <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] gem_busy basic-parallel-* causes SNB system to hang"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=95134">95134</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[BAT] gem_busy basic-parallel-* causes SNB system to hang
          </td>
        </tr>

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

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

        <tr>
          <th>Hardware</th>
          <td>x86-64 (AMD64)
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>critical
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>high
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>DRM/Intel
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>marius.c.vlad@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>

        <tr>
          <th>i915 platform</th>
          <td>SNB
          </td>
        </tr>

        <tr>
          <th>i915 features</th>
          <td>GEM/Other, GPU hang
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Debug messages when running basic-parallel-render on SNB:

[  104.324995] gem_busy: starting subtest basic-parallel-render
[  104.325835] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.326682] [drm:eb_lookup_vmas] Invalid object handle 0 at index 0
[  104.327504] [drm:drm_ioctl] ret = -2
[  104.328319] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1, I915_GEM_CREATE
[  104.329141] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1, I915_GEM_PWRITE
[  104.329952] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.330758] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.331550] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.332549] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.333324] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.334088] [drm:eb_select_ring] execbuf with invalid ring: 4
[  104.334861] [drm:drm_ioctl] ret = -22
[  104.335631] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.336420] [drm:eb_select_ring] execbuf with unknown ring: 5
[  104.337220] [drm:drm_ioctl] ret = -22
[  104.338018] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.338808] [drm:eb_select_ring] execbuf with unknown ring: 6
[  104.339584] [drm:drm_ioctl] ret = -22
[  104.340350] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.341125] [drm:eb_select_ring] execbuf with unknown ring: 7
[  104.341902] [drm:drm_ioctl] ret = -22
[  104.342670] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.343466] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.344247] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.345238] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.345990] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.346769] [drm:eb_select_ring] execbuf with invalid ring: 4
[  104.347537] [drm:drm_ioctl] ret = -22
[  104.348297] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.349079] [drm:eb_select_ring] execbuf with unknown ring: 5
[  104.349865] [drm:drm_ioctl] ret = -22
[  104.350646] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.351435] [drm:eb_select_ring] execbuf with unknown ring: 6
[  104.352218] [drm:drm_ioctl] ret = -22
[  104.352993] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.353779] [drm:eb_select_ring] execbuf with unknown ring: 7
[  104.354583] [drm:drm_ioctl] ret = -22
[  104.355366] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.356154] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.356930] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.357919] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.358687] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.359443] [drm:eb_select_ring] execbuf with invalid ring: 4
[  104.360208] [drm:drm_ioctl] ret = -22
[  104.360966] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.361737] [drm:eb_select_ring] execbuf with unknown ring: 5
[  104.362535] [drm:drm_ioctl] ret = -22
[  104.363310] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.364091] [drm:eb_select_ring] execbuf with unknown ring: 6
[  104.364869] [drm:drm_ioctl] ret = -22
[  104.365637] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.366442] [drm:eb_select_ring] execbuf with unknown ring: 7
[  104.367233] [drm:drm_ioctl] ret = -22
[  104.368005] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.368794] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.369572] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.370574] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.371312] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.372082] [drm:eb_select_ring] execbuf with invalid ring: 4
[  104.372835] [drm:drm_ioctl] ret = -22
[  104.373590] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.374355] [drm:eb_select_ring] execbuf with unknown ring: 5
[  104.375114] [drm:drm_ioctl] ret = -22
[  104.375877] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.376633] [drm:eb_select_ring] execbuf with unknown ring: 6
[  104.377389] [drm:drm_ioctl] ret = -22
[  104.378163] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.378935] [drm:eb_select_ring] execbuf with unknown ring: 7
[  104.379709] [drm:drm_ioctl] ret = -22
[  104.380490] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.381282] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.382074] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.383084] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.383853] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.384632] [drm:eb_select_ring] execbuf with invalid ring: 4
[  104.385412] [drm:drm_ioctl] ret = -22
[  104.386184] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.386958] [drm:eb_select_ring] execbuf with unknown ring: 5
[  104.387725] [drm:drm_ioctl] ret = -22
[  104.388492] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.389280] [drm:eb_select_ring] execbuf with unknown ring: 6
[  104.390081] [drm:drm_ioctl] ret = -22
[  104.390881] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.391683] [drm:eb_select_ring] execbuf with unknown ring: 7
[  104.392491] [drm:drm_ioctl] ret = -22
[  104.393296] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.394129] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.394954] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.395975] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.396764] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.397557] [drm:eb_select_ring] execbuf with invalid ring: 4
[  104.398353] [drm:drm_ioctl] ret = -22
[  104.399139] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.399918] [drm:eb_select_ring] execbuf with unknown ring: 5
[  104.400685] [drm:drm_ioctl] ret = -22
[  104.401452] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.402241] [drm:eb_select_ring] execbuf with unknown ring: 6
[  104.403033] [drm:drm_ioctl] ret = -22
[  104.403819] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.404619] [drm:eb_select_ring] execbuf with unknown ring: 7
[  104.405423] [drm:drm_ioctl] ret = -22
[  104.406242] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.407075] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.407897] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.408927] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.409710] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.410507] [drm:eb_select_ring] execbuf with invalid ring: 4
[  104.411293] [drm:drm_ioctl] ret = -22
[  104.412060] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.412834] [drm:eb_select_ring] execbuf with unknown ring: 5
[  104.413605] [drm:drm_ioctl] ret = -22
[  104.414373] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.415166] [drm:eb_select_ring] execbuf with unknown ring: 6
[  104.415963] [drm:drm_ioctl] ret = -22
[  104.416766] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.417586] [drm:eb_select_ring] execbuf with unknown ring: 7
[  104.418416] [drm:drm_ioctl] ret = -22
[  104.419235] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.420063] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.420884] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.421911] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.422705] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.423493] [drm:eb_select_ring] execbuf with invalid ring: 4
[  104.424277] [drm:drm_ioctl] ret = -22
[  104.425057] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.425843] [drm:eb_select_ring] execbuf with unknown ring: 5
[  104.426626] [drm:drm_ioctl] ret = -22
[  104.427407] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.428192] [drm:eb_select_ring] execbuf with unknown ring: 6
[  104.428988] [drm:drm_ioctl] ret = -22
[  104.429788] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.430608] [drm:eb_select_ring] execbuf with unknown ring: 7
[  104.431432] [drm:drm_ioctl] ret = -22
[  104.432249] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1, I915_GEM_WAIT
[  104.433071] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
DRM_IOCTL_GEM_CLOSE
[  104.433899] [drm:i915_drop_caches_set] Dropping caches: 0x00000004
[  104.434703] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1, DRM_IOCTL_VERSION
[  104.435526] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1, I915_GEM_CREATE
[  104.436339] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1, I915_GEM_CREATE
[  104.437152] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1, I915_GEM_MMAP
[  104.437953] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_SET_DOMAIN
[  104.438739] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.439555] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1, I915_GEM_BUSY
[  104.440311] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1, I915_GEM_BUSY
[  104.441072] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1, DRM_IOCTL_VERSION
[  104.441833] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1, I915_GEM_CREATE
[  104.442627] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1, I915_GEM_CREATE
[  104.443411] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1, I915_GEM_MMAP
[  104.444198] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_SET_DOMAIN
[  104.444959] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1,
I915_GEM_EXECBUFFER2
[  104.445740] [drm:drm_ioctl] pid=1229, dev=0xe200, auth=1, I915_GEM_BUSY
< hang ></pre>
        </div>
      </p>
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