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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [ILK regression]igt/gem_ring_sync_copy randomly causes *ERROR* Hangcheck timer elapsed... bsd ring idle"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=78681#c9">Comment # 9</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [ILK regression]igt/gem_ring_sync_copy randomly causes *ERROR* Hangcheck timer elapsed... bsd ring idle"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=78681">bug 78681</a>
              from <span class="vcard"><a class="email" href="mailto:huax.lu@intel.com" title="lu hua <huax.lu@intel.com>"> <span class="fn">lu hua</span></a>
</span></b>
        <pre>(In reply to <a href="show_bug.cgi?id=78681#c8">comment #8</a>)
<span class="quote">> Candidate for testing: 

> git://people.freedesktop.org/~ickle/linux-2.6 requests

> (the seqno to request rework)</span >

Test on branch requests, commit 299421c8f49d90fd24d4bdacd01cb91b3606a95a.
Run ./gem_ring_sync_copy 20 cycles, it doesn't have this error.

Run ./core_getclient cycles, it has this error once.
[  266.671526] [drm:i915_gem_open]
[  266.671529] [drm:i915_gem_object_create_stolen] creating stolen object:
size=1000
[  266.671532] [drm:i915_pages_create_for_stolen] offset=0x82a000, size=4096
[  266.671613] [drm:i915_gem_open]
[  266.671615] [drm:i915_gem_object_create_stolen] creating stolen object:
size=1000
[  266.671616] [drm:i915_pages_create_for_stolen] offset=0x82b000, size=4096
[  269.806762] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed...
bsd ring idle
[  269.806925] [drm:intel_crtc_set_config] [CRTC:8] [FB:65] #connectors=1 (x y)
(0 0)
[  269.806931] [drm:intel_set_config_compute_mode_changes] computed changes for
[CRTC:8], mode_changed=0, fb_changed=0
[  269.806933] [drm:intel_modeset_stage_output_state] [CONNECTOR:14:VGA-1] to
[CRTC:8]
[  269.806934] [drm:intel_modeset_stage_output_state] [CONNECTOR:30:DP-3] to
[CRTC:12]
[  269.806937] [drm:intel_crtc_set_config] [CRTC:12] [FB:65] #connectors=1 (x
y) (0 0)
[  269.806939] [drm:intel_set_config_compute_mode_changes] computed changes for
[CRTC:12], mode_changed=0, fb_changed=0
[  269.806940] [drm:intel_modeset_stage_output_state] [CONNECTOR:14:VGA-1] to
[CRTC:8]
[  269.806941] [drm:intel_modeset_stage_output_state] [CONNECTOR:30:DP-3] to
[CRTC:12]
[  269.814505] core_getclient: executing
[  269.815072] [drm:i915_gem_open]
[  269.815074] [drm:i915_gem_object_create_stolen] creating stolen object:
size=1000
[  269.815077] [drm:i915_pages_create_for_stolen] offset=0x82a000, size=4096
[  269.815166] [drm:i915_gem_open]
[  269.815168] [drm:i915_gem_object_create_stolen] creating stolen object:
size=1000
[  269.815170] [drm:i915_pages_create_for_stolen] offset=0x82b000, size=4096
[  269.815300] [drm:intel_crtc_set_config] [CRTC:8] [FB:65] #connectors=1 (x y)
(0 0)
[  269.815304] [drm:intel_set_config_compute_mode_changes] computed changes for
[CRTC:8], mode_changed=0, fb_changed=0
[  269.815306] [drm:intel_modeset_stage_output_state] [CONNECTOR:14:VGA-1] to
[CRTC:8]
[  269.815307] [drm:intel_modeset_stage_output_state] [CONNECTOR:30:DP-3] to
[CRTC:12]
[  269.815309] [drm:intel_crtc_set_config] [CRTC:12] [FB:65] #connectors=1 (x
y) (0 0)
[  269.815311] [drm:intel_set_config_compute_mode_changes] computed changes for
[CRTC:12], mode_changed=0, fb_changed=0
[  269.815313] [drm:intel_modeset_stage_output_state] [CONNECTOR:14:VGA-1] to
[CRTC:8]
[  269.815314] [drm:intel_modeset_stage_output_state] [CONNECTOR:30:DP-3] to
[CRTC:12]
[  269.823407] core_getclient: executing
[  269.823965] [drm:i915_gem_open]
[  269.823968] [drm:i915_gem_object_create_stolen] creating stolen object:
size=1000
[  269.823970] [drm:i915_pages_create_for_stolen] offset=0x82a000, size=4096
[  269.824052] [drm:i915_gem_open]
[  269.824054] [drm:i915_gem_object_create_stolen] creating stolen object:
size=1000
[  269.824056] [drm:i915_pages_create_for_stolen] offset=0x82b000, size=4096
[  269.824125] [drm:intel_crtc_set_config] [CRTC:8] [FB:65] #connectors=1 (x y)
(0 0)
[  269.824128] [drm:intel_set_config_compute_mode_changes] computed changes for
[CRTC:8], mode_changed=0, fb_changed=0
[  269.824130] [drm:intel_modeset_stage_output_state] [CONNECTOR:14:VGA-1] to
[CRTC:8]
[  269.824131] [drm:intel_modeset_stage_output_state] [CONNECTOR:30:DP-3] to
[CRTC:12]
[  269.824133] [drm:intel_crtc_set_config] [CRTC:12] [FB:65] #connectors=1 (x
y) (0 0)
[  269.824135] [drm:intel_set_config_compute_mode_changes] computed changes for
[CRTC:12], mode_changed=0, fb_changed=0
[  269.824136] [drm:intel_modeset_stage_output_state] [CONNECTOR:14:VGA-1] to
[CRTC:8]
[  269.824137] [drm:intel_modeset_stage_output_state] [CONNECTOR:30:DP-3] to
[CRTC:12]</pre>
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