[Bug 78681] [ILK regression]igt/gem_ring_sync_copy randomly causes *ERROR* Hangcheck timer elapsed... bsd ring idle

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=78681

--- Comment #9 from lu hua <huax.lu at intel.com> ---
(In reply to comment #8)
> Candidate for testing: 
> 
> git://people.freedesktop.org/~ickle/linux-2.6 requests
> 
> (the seqno to request rework)

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]

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