[Bug 90011] New: [ BDW] igt/kms_flip at flip-vs-modeset-vs-hang causes gpu hang

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90011

            Bug ID: 90011
           Summary: [ BDW] igt/kms_flip at flip-vs-modeset-vs-hang causes gpu
                    hang
           Product: DRI
           Version: unspecified
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: high
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: yex.tian at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 115052
  --> https://bugs.freedesktop.org/attachment.cgi?id=115052&action=edit
dmesg info

System Environment:       
-----------------------------------------------------
Regression: not sure
Non-working platforms: BDW

==Kernel==
--------------------------------------------------
commit 631c2f8cb69ecbd7dd0494c37dd3c7fbd04de928
Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date:   Sat Apr 11 00:21:05 2015 +0200

    drm-intel-nightly: 2015y-04m-10d-22h-20m-20s UTC integration manifest

==Bug detailed description==
igt/kms_flip at flip-vs-modeset-vs-hang causes GPU hang on BDW, it still exists
the latest fixes(5df058) branch.

Case list:
flip-vs-modeset-vs-hang-interruptible
igt at kms_flip@flip-vs-panning-vs-hang
igt at kms_flip@flip-vs-panning-vs-hang-interruptible

Output:
----------------------------
root at x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# ./kms_flip
--run-subtest flip-vs-modeset-vs-hang
IGT-Version: 1.10-g007ff02 (x86_64) (Linux:
4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ x86_64)
Using monotonic timestamps
Beginning flip-vs-modeset-vs-hang on crtc 20, connector 31
  1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780
..
flip-vs-modeset-vs-hang on crtc 20, connector 31: PASSED

Beginning flip-vs-modeset-vs-hang on crtc 24, connector 31
  1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780
..
flip-vs-modeset-vs-hang on crtc 24, connector 31: PASSED

Beginning flip-vs-modeset-vs-hang on crtc 28, connector 31
  1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780
..
flip-vs-modeset-vs-hang on crtc 28, connector 31: PASSED

Subtest flip-vs-modeset-vs-hang: SUCCESS (35.644s)

1,./kms_flip --run-subtest flip-vs-modeset-vs-hang

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