[Bug 85497] New: [BYT]igt/gem_userptr_blits some subcases fail

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=85497

            Bug ID: 85497
           Summary: [BYT]igt/gem_userptr_blits some subcases fail
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: jinxianx.guo at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 108489
  --> https://bugs.freedesktop.org/attachment.cgi?id=108489&action=edit
dmesg

==System Environment==
--------------------------
Regression: No.
It's new case

Non-working platforms: BYT

==kernel==
--------------------------
origin/drm-intel-nightly: 88a443f454a4d8f779a9bff51f2ef334f5f69372(fails)
    drm-intel-nightly: 2014y-10m-24d-14h-52m-29s UTC integration manifest
origin/drm-intel-next-queued: 3a9effecae83dcdac4b48972ec24539c6e9e4e7c(fails)
    drm/i915: Move flags describing VMA mappings into the VMA
origin/drm-intel-fixes: 03a3780b0c82183110dbea7c7037a61686685511(fails)
    drm/i915: Fix GMBUSFREQ on vlv/chv

==Bug detailed description==
igt/gem_userptr_blits some subcases fail

Case list:
igt/gem_userptr_blits/dmabuf-sync
igt/gem_userptr_blits/dmabuf-unsync


Output:
root at x-byt06:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests#
./gem_userptr_blits --run-subtest dmabuf-sync
IGT-Version: 1.8-geae9f72 (x86_64) (Linux:
3.18.0-rc1_drm-intel-nightly_88a443_20141027+ x86_64)
Aperture size is 2048 MiB
Total RAM is 1894 MiB
Testing unsynchronized mappings...
Testing synchronized mappings...
Test assertion failure function check_bo, file gem_userptr_blits.c:710:
Failed assertion: ptr2
Subtest dmabuf-sync: FAIL (0.002s)
root at x-byt06:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests#
./gem_userptr_blits --run-subtest dmabuf-unsync
IGT-Version: 1.8-geae9f72 (x86_64) (Linux:
3.18.0-rc1_drm-intel-nightly_88a443_20141027+ x86_64)
Aperture size is 2048 MiB
Total RAM is 1894 MiB
Testing unsynchronized mappings...
Test assertion failure function check_bo, file gem_userptr_blits.c:710:
Failed assertion: ptr2
Subtest dmabuf-unsync: FAIL (0.002s)
Testing synchronized mappings...

==Reproduce steps==
---------------------------- 
1. ./gem_userptr_blits --run-subtest dmabuf-sync

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