[Bug 77868] New: [HSW]Subcases mmap_cpu and page_flip_and_mmap_cpu of kms_fbc_crc fail

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=77868

          Priority: medium
            Bug ID: 77868
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [HSW]Subcases mmap_cpu and page_flip_and_mmap_cpu of
                    kms_fbc_crc 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 97872
  --> https://bugs.freedesktop.org/attachment.cgi?id=97872&action=edit
dmesg

System Environment:
--------------------------
Platform: HSW
kernel:   (drm-intel-next-queued) c79057922ed6c2c6df1214e6ab4414fea1b23db2

Bug detailed description:
----------------------------
Subcases mmap_cpu and page_flip_and_mmap_cpu of kms_fbc_crc fail on
-nightly(35dc7c8af75a3e5ae52a5469786602ce083a6368) and
-next-queued(c79057922ed6c2c6df1214e6ab4414fea1b23db2)

This bug always fail

output on -next-queued kernel:
 ./kms_fbc_crc --run-subtest page_flip_and_mmap_cpu
IGT-Version: 1.6-g78e4c2b (x86_64) (Linux:
3.14.0_drm-intel-next-queued_f68918_20140424+ x86_64)
Beginning page_flip_and_mmap_cpu on crtc 5, connector 13
Test assertion failure function test_crc, file kms_fbc_crc.c:316:
Last errno: 0, Success
Failed assertion: !igt_crc_equal(&crcs[0], &data->ref_crc[1])
Subtest page_flip_and_mmap_cpu: FAIL

Reproduce steps:
---------------------------- 

1. ./kms_fbc_crc --run-subtest mmap_cpu
   or 
   ./kms_fbc_crc --run-subtest page_flip_and_mmap_cpu

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