[Beignet] possilbe bug when run opencv_test_imgproc

[yan.wang at linux.intel.com]

Update:
Under root account, it will crash.
Under user account(e.g. yanwang), it will pass.

> In my baytail T platform, it is still exist.
>
>> Before leaving office, I have built the latest beignet. I will try it
>> again tomorrow.
>> Thanks.
>>
>> Yan Wang
>>
>>> Can't reproduce it here. Did you use the latest git master?
>>>
>>> The latest git version is
>>> commit 33a043e903f9d61445d3fb7972becf83c2842276
>>> Author: Junyan He <junyan.he at linux.intel.com>
>>> Date:   Thu Oct 23 13:09:00 2014 +0800
>>>
>>>     Add the disasm support for Gen8
>>>
>>>     Signed-off-by: Junyan He <junyan.he at linux.intel.com>
>>>     Reviewed-by: Zhigang Gong <zhigang.gong at linux.intel.com>
>>>     Reviewed-by: "Yang, Rong R" <rong.r.yang at intel.com>
>>>
>>>
>>> Just a reminder, when report a bug/issue, please update to the latest
>>> git
>>> master version and test it again and if it could reproduce please write
>>> done the git hash in the report.
>>>
>>> Thanks,
>>> Zhigang Gong.
>>>
>>> On Thu, Oct 23, 2014 at 03:24:01AM -0700, yan.wang at linux.intel.com
>>> wrote:
>>>> Hi, All,
>>>>    I found one possible bug for review.
>>>>    if run the following:
>>>> ./opencv_test_imgproc --gtest_filter=OCL_ImageProc/Filter2D.Mat*.
>>>>    OCL_ImageProc/Filter2D.Mat/256 failed and continue. But the whole
>>>> test
>>>> flow will crash in OCL_ImageProc/Filter2D.Mat/257:
>>>> [  FAILED  ] OCL_ImageProc/Filter2D.Mat/240, where GetParam() =
>>>> (CV_8U,
>>>> Channels(2), 7, 1, BORDER_CONSTANT, false, false) (6433 ms)
>>>> [ RUN      ] OCL_ImageProc/Filter2D.Mat/241
>>>> [       OK ] OCL_ImageProc/Filter2D.Mat/241 (358 ms)
>>>> [ RUN      ] OCL_ImageProc/Filter2D.Mat/242
>>>> [       OK ] OCL_ImageProc/Filter2D.Mat/242 (311 ms)
>>>> [ RUN      ] OCL_ImageProc/Filter2D.Mat/243
>>>> [       OK ] OCL_ImageProc/Filter2D.Mat/243 (6 ms)
>>>> [ RUN      ] OCL_ImageProc/Filter2D.Mat/244
>>>> [       OK ] OCL_ImageProc/Filter2D.Mat/244 (203 ms)
>>>> [ RUN      ] OCL_ImageProc/Filter2D.Mat/245
>>>> [       OK ] OCL_ImageProc/Filter2D.Mat/245 (207 ms)
>>>> [ RUN      ] OCL_ImageProc/Filter2D.Mat/246
>>>> [       OK ] OCL_ImageProc/Filter2D.Mat/246 (203 ms)
>>>> [ RUN      ] OCL_ImageProc/Filter2D.Mat/247
>>>> [       OK ] OCL_ImageProc/Filter2D.Mat/247 (7 ms)
>>>> [ RUN      ] OCL_ImageProc/Filter2D.Mat/248
>>>> [       OK ] OCL_ImageProc/Filter2D.Mat/248 (210 ms)
>>>> [ RUN      ] OCL_ImageProc/Filter2D.Mat/249
>>>> [       OK ] OCL_ImageProc/Filter2D.Mat/249 (207 ms)
>>>> [ RUN      ] OCL_ImageProc/Filter2D.Mat/250
>>>> [       OK ] OCL_ImageProc/Filter2D.Mat/250 (208 ms)
>>>> [ RUN      ] OCL_ImageProc/Filter2D.Mat/251
>>>> [       OK ] OCL_ImageProc/Filter2D.Mat/251 (7 ms)
>>>> [ RUN      ] OCL_ImageProc/Filter2D.Mat/252
>>>> [       OK ] OCL_ImageProc/Filter2D.Mat/252 (214 ms)
>>>> [ RUN      ] OCL_ImageProc/Filter2D.Mat/253
>>>> [       OK ] OCL_ImageProc/Filter2D.Mat/253 (207 ms)
>>>> [ RUN      ] OCL_ImageProc/Filter2D.Mat/254
>>>> [       OK ] OCL_ImageProc/Filter2D.Mat/254 (212 ms)
>>>> [ RUN      ] OCL_ImageProc/Filter2D.Mat/255
>>>> [       OK ] OCL_ImageProc/Filter2D.Mat/255 (7 ms)
>>>> [ RUN      ] OCL_ImageProc/Filter2D.Mat/256
>>>> /home/yanwang/opencv/modules/imgproc/test/ocl/test_filter2d.cpp:106:
>>>> Failure
>>>> Expected: (TestUtils::checkNorm2(dst, udst)) <= (threshold), actual:
>>>> 255
>>>> vs 1
>>>> Size: [92 x 61]
>>>>
>>>> /home/yanwang/opencv/modules/imgproc/test/ocl/test_filter2d.cpp:107:
>>>> Failure
>>>> Expected: (TestUtils::checkNorm2(dst_roi, udst_roi)) <= (threshold),
>>>> actual: 255 vs 1
>>>> Size: [92 x 61]
>>>>
>>>> [  FAILED  ] OCL_ImageProc/Filter2D.Mat/256, where GetParam() =
>>>> (CV_8U,
>>>> Channels(2), 7, 4, BORDER_CONSTANT, false, false) (7413 ms)
>>>> [ RUN      ] OCL_ImageProc/Filter2D.Mat/257
>>>> opencv_test_imgproc:
>>>> /home/yanwang/beignet/src/intel/intel_gpgpu.c:703:
>>>> intel_gpgpu_check_binded_buf_address: Assertion
>>>> `gpgpu->binded_buf[i]->offset != 0' failed.
>>>> Segmentation fault (core dumped)
>>>>
>>>>   But if I run OCL_ImageProc/Filter2D.Mat/257 only, it passed. I think
>>>> 256
>>>> case may influence it.
>>>>   Thanks.
>>>>
>>>> Yan Wang
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