[Bug 94314] New: [BXT] gem_mmap_gtt/coherency fail

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94314

            Bug ID: 94314
           Summary: [BXT] gem_mmap_gtt/coherency fail
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: humberto.i.perez.rodriguez at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 121992
  --> https://bugs.freedesktop.org/attachment.cgi?id=121992&action=edit
dmesg.log

==Description==
--------------------------------------------------
gem_mmap_gtt/coherency fail

==Attachments==
--------------------------------------------------
dmesg.log

==Steps to reproduce==
--------------------------------------------------
run the following test 

./gem_mmap_gtt --run-subtest coherency

IGT-Version: 1.13-gbabcf40 (x86_64) (Linux: 4.5.0-rc5-nightly+ x86_64)
(gem_mmap_gtt:1104) CRITICAL: Test assertion failure function test_coherency,
file gem_mmap_gtt.c:275:
(gem_mmap_gtt:1104) CRITICAL: Failed assertion: cpu[x] == i
(gem_mmap_gtt:1104) CRITICAL: error: 0 != 16
Stack trace:
  #0 [__igt_fail_assert+0xf1]
  #1 [__real_main563+0xc90]
  #2 [<unknown>+0xc90]
Subtest coherency failed.
**** DEBUG ****
(gem_mmap_gtt:1104) DEBUG: Test requirement passed: igt_setup_clflush()
(gem_mmap_gtt:1104) CRITICAL: Test assertion failure function test_coherency,
file gem_mmap_gtt.c:275:
(gem_mmap_gtt:1104) CRITICAL: Failed assertion: cpu[x] == i
(gem_mmap_gtt:1104) CRITICAL: error: 0 != 16
****  END  ****
Subtest coherency: FAIL (0.018s)

real    0m2.139s
user    0m0.006s
sys     0m0.008s



==Actual results==
--------------------------------------------------
gem_mmap_gtt/coherency fail


==Expected results==
--------------------------------------------------
the test must be run and finish without any issues


==Hardware configuration==
--------------------------------------------------
Kernel version                      : 4.5.0-rc5-nightly+
Linux distribution                  : Ubuntu 15.10
Architecture                        : 64-bit
Mesa version                        : 11.1.1 (git-330aa44
xf86-video-intel version            : 2.99.917
Xorg-Xserver version                : 1.18.1
DRM version                         : 2.4.66
VAAPI version                       : Intel i965 driver for Intel(R) Broxton -
1.6.3.pre1 (1.6.1-92-gf6fe842)
Cairo version                       : 1.15.2
Bios revision                       : 119.10
KSC revision                        : 1.6
Motherboard model                   : Broxton P
Motherboard type                    : NOTEBOOK Hand Held
Motherboard manufacturer            : Intel Corp.
CPU family                          : Other
CPU information                     : 06/5c
GPU Card                            : Intel Corporation Device 5a84 (rev 03)
(prog-if 00 [VGA controller])


IGT 1.13
=========
Commit : babcf40f29d9e9cce5d0739b1784eb94fe91bd26


kernel
=======

commit 1a139ead792d8e912aa13d413b9cf59811fde676
Author: Jani Nikula <jani.nikula at intel.com>
Date:   Mon Feb 22 10:48:46 2016 +0200

    drm-intel-nightly: 2016y-02m-22d-08h-48m-06s UTC integration manifest

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