[Bug 83969] New: [BDW Regression]igt/kms_flip subcases fail

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83969

          Priority: high
            Bug ID: 83969
          Keywords: bisect_pending
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [BDW Regression]igt/kms_flip subcases fail
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: jinxianx.guo at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 106414
  --> https://bugs.freedesktop.org/attachment.cgi?id=106414&action=edit
dmesg

==System Environment==
--------------------------
Regression: Yes.
Good commit on -next-queued: a2ca46441decdcdf4010f1db8a7041c8851327b3

Non-working platforms: BDW

==kernel==
--------------------------
origin/drm-intel-nightly:ab7f1ab9c4d1c8af46517d60e54eeda9d8673f6a(fails)
    drm-intel-nightly: 2014y-09m-16d-09h-02m-41s UTC integration manifest
origin/drm-intel-next-queued:889dc7e960acde076491806d27e068b391c4a47a(fails)
    drm/i915: Use EIO instead of EAGAIN for sink CRC error.
origin/drm-intel-fixes: d72985765e986f45a28f87d75f3f0ece489b04cc(fails)
    drm/i915: Add limited color range readout for HDMI/DP ports on g4x/vlv/chv


==Bug detailed description==
-----------------------------
igt/kms_flip subcases fail

Case list:
igt/kms_flip/absolute-wf_vblank
igt/kms_flip/absolute-wf_vblank-interruptible
igt/kms_flip/blocking-absolute-wf_vblank
igt/kms_flip/blocking-wf_vblank
igt/kms_flip/busy-flip
igt/kms_flip/dpms-vs-vblank-race
igt/kms_flip/flip-vs-absolute-wf_vblank
igt/kms_flip/flip-vs-absolute-wf_vblank-interruptible
igt/kms_flip/flip-vs-blocking-wf-vblank
igt/kms_flip/flip-vs-wf_vblank
igt/kms_flip/flip-vs-wf_vblank-interruptible
igt/kms_flip/modeset-vs-vblank-race
igt/kms_flip/vblank-vs-hang-interruptible
igt/kms_flip/wf_vblank
igt/kms_flip/wf_vblank-interruptible
igt/kms_flip/wf_vblank-ts-check
igt/kms_flip/wf_vblank-ts-check-interruptible


Output:
root at x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# ./kms_flip
--run-subtest absolute-wf_vblank-interruptible
IGT-Version: 1.8-g137877f (x86_64) (Linux:
3.17.0-rc5_drm-intel-nightly_ab7f1a_20140917+ x86_64)
Using monotonic timestamps
Beginning absolute-wf_vblank-interruptible on crtc 8, connector 19
  1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780
.............................................................
absolute-wf_vblank-interruptible on crtc 8, connector 19: PASSED

Beginning absolute-wf_vblank-interruptible on crtc 12, connector 19
  1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780
.Test assertion failure function wait_for_events, file kms_flip.c:1172:
Failed assertion: ret > 0
Last errno: 4, Interrupted system call
select timed out or error (ret 0)
Subtest absolute-wf_vblank-interruptible: FAIL (14.457s)

==Reproduce steps==
---------------------------- 
1. ./kms_flip --run-subtest absolute-wf_vblank-interruptible

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