[Bug 81377] New: [IVB Regression]igt/kms_mmio_vs_cs_flip/setcrtc_vs_cs_flip fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81377

          Priority: high
            Bug ID: 81377
          Keywords: bisect_pending
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [IVB
                    Regression]igt/kms_mmio_vs_cs_flip/setcrtc_vs_cs_flip
                    fails
        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 102844
  --> https://bugs.freedesktop.org/attachment.cgi?id=102844&action=edit
dmesg

==System Environment==
--------------------------
Regression: Yes
Here has a bug 79290 on -next-queued(d3b448d9917a3d6531e499d88bfb13ea5e31e4ad)

Non-working platforms: BSW

==kernel==
--------------------------
origin/drm-intel-nightly: 2a38e1bcd4dc9523cd723291340226d139bece1b(fails)
    drm-intel-nightly: 2014y-07m-14d-23h-18m-30s integration manifest
origin/drm-intel-next-queued: ebcdf5276e6e2ddef6a4fd7716684030301a6fed(fails)
    drm/i915: Handle failure to kick out a conflicting fb driver
origin/drm-intel-fixes: c6930992948adf0f8fc1f6ff1da51c5002a2cf95(fails)
    Revert "drm/i915: reverse dp link param selection, prefer fast over wide
again"

==Bug detailed description==
igt/kms_mmio_vs_cs_flip/setcrtc_vs_cs_flip fails

Output:
[root at x-ivb9 tests]# ./kms_mmio_vs_cs_flip --run-subtest setcrtc_vs_cs_flip
IGT-Version: 1.7-g3f50598 (x86_64) (Linux:
3.16.0-rc4_drm-intel-next-queued_ebcdf5_20140715+ x86_64)
Test assertion failure function igt_wait_for_vblank, file igt_kms.c:1475:
Failed assertion: drmWaitVBlank(drm_fd, &wait_vbl) == 0
Last errno: 16, Device or resource busy
Subtest setcrtc_vs_cs_flip: FAIL

==Reproduce steps==
---------------------------- 
1. ./kms_mmio_vs_cs_flip --run-subtest setcrtc_vs_cs_flip

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