[Bug 90944] New: [Regression]igt/./gem_streaming_writes/cpu fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90944

            Bug ID: 90944
           Summary: [Regression]igt/./gem_streaming_writes/cpu fails
           Product: DRI
           Version: unspecified
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: high
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: huax.lu at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 116447
  --> https://bugs.freedesktop.org/attachment.cgi?id=116447&action=edit
dmesg

==System Environment==
--------------------------
Regression: yes/igt regression

good commit: 0d16473df4ed29c9836b03090c78debfb9a7e3e6
bad commit: fd772e32a23157fc29649070a6a5e94d70ae02f8

Non-working platforms:all

==kernel==
--------------------------
drm-intel-nightly/a2ed0c64452ef98160ea849f2e742ce6c077e645
commit a2ed0c64452ef98160ea849f2e742ce6c077e645
Author: Jani Nikula <jani.nikula at intel.com>
Date:   Tue Jun 9 10:42:12 2015 +0300

    drm-intel-nightly: 2015y-06m-09d-07h-41m-49s UTC integration manifest

==Bug detailed description==
-----------------------------
It fails on all platforms. 
following cases also fail:
igt at gem_streaming_writes@cpu-sync
igt at gem_streaming_writes@gtt
igt at gem_streaming_writes@gtt-sync
igt at gem_streaming_writes@wc
igt at gem_streaming_writes@wc-sync

output:
IGT-Version: 1.10-gfd772e3 (x86_64) (Linux:
4.1.0-rc7_drm-intel-nightly_a2ed0c_20150610+ x86_64)
Test assertion failure function test_streaming, file
gem_streaming_writes.c:216:
Failed assertion: __dst_offset == dst_offset
Stack trace:
  #0 [__igt_fail_assert+0xf1]
  #1 [test_streaming+0x657]
  #2 [__real_main370+0x38e]
  #3 [main+0x29]
  #4 [__libc_start_main+0xf5]
  #5 [_start+0x29]
  #6 [<unknown>+0x29]
Subtest cpu failed.
**** DEBUG ****
Test requirement passed: ret == 0
Test requirement passed: __gem_execbuf(fd, &execbuf) == 0
Test assertion failure function test_streaming, file
gem_streaming_writes.c:216:
Failed assertion: __dst_offset == dst_offset
****  END  ****
Subtest cpu: FAIL (0.004s)

==Reproduce steps==
---------------------------- 
1. ./gem_streaming_writes --run-subtest cpu

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