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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [CI] igt@drv_suspend@fence-restore-tiled2untiled - incomplete"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=104242#c1">Comment # 1</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [CI] igt@drv_suspend@fence-restore-tiled2untiled - incomplete"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=104242">bug 104242</a>
              from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
        <pre>Possibly:

commit 16c8619a7c53fe05526c31d4758be0eeabd16364
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date:   Tue Dec 19 22:09:16 2017 +0000

    drm/i915: Avoid context dereference inside execlists_submission_tasklet

    A lesson that has to be relearnt over and over again is that the request
    does not keep a reference to the context and so we cannot freely
    dereference the context from inside the execlists_submission_tasklet. In
    particular, we try to do so in the new GEM_TRACE() so convert those over
    to the port->context_id we keep for GEM debugging. This means the
    tracing now depends on DRM_I915_GEM_DEBUG.

    Fixes: bccd3b831185 ("drm/i915: Use trace_printk to provide a death rattle
for GEM")
    References: <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [CI] igt@pm_rpm@system-suspend - incomplete - system hang/timeout"
   href="show_bug.cgi?id=104066">https://bugs.freedesktop.org/show_bug.cgi?id=104066</a>
    References: <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [BAT] [BDW only] igt@kms_pipe_crc_basic@suspend-read-crc-pipe-c -incomplete timeout/system hang?"
   href="show_bug.cgi?id=104162">https://bugs.freedesktop.org/show_bug.cgi?id=104162</a>
    References: <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [CI] igt@drv_suspend@fence-restore-tiled2untiled - incomplete"
   href="show_bug.cgi?id=104242">https://bugs.freedesktop.org/show_bug.cgi?id=104242</a>
    References: <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [BAT] igt@gem_exec_suspend@basic-s3 - incomplete Softdog"
   href="show_bug.cgi?id=104310">https://bugs.freedesktop.org/show_bug.cgi?id=104310</a>
    Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
    Cc: Mika Kuoppala <<a href="mailto:mika.kuoppala@linux.intel.com">mika.kuoppala@linux.intel.com</a>>
    Cc: Joonas Lahtinen <<a href="mailto:joonas.lahtinen@linux.intel.com">joonas.lahtinen@linux.intel.com</a>>
    Cc: Tvrtko Ursulin <<a href="mailto:tvrtko.ursulin@intel.com">tvrtko.ursulin@intel.com</a>>
    Reviewed-by: Michel Thierry <<a href="mailto:michel.thierry@intel.com">michel.thierry@intel.com</a>>
    Link:
<a href="https://patchwork.freedesktop.org/patch/msgid/20171219220916.30882-1-chris@chris-wilson.co.uk">https://patchwork.freedesktop.org/patch/msgid/20171219220916.30882-1-chris@chris-wilson.co.uk</a></pre>
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