[Bug 91028] New: [SKL]igt many kms_frontbuffer_tracking subcases fail

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91028

            Bug ID: 91028
           Summary: [SKL]igt many kms_frontbuffer_tracking subcases fail
           Product: DRI
           Version: unspecified
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         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 116592
  --> https://bugs.freedesktop.org/attachment.cgi?id=116592&action=edit
dmesg

==System Environment==
--------------------------
Regression: not sure, new case

Non-working platforms: SKL

==kernel==
--------------------------
drm-intel-nightly/186047de2f57b1ed4d1bd52f824b88b25275d378
commit 186047de2f57b1ed4d1bd52f824b88b25275d378
Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date:   Thu Jun 18 18:47:12 2015 +0200

    drm-intel-nightly: 2015y-06m-18d-16h-46m-34s UTC integration manifest

==Bug detailed description==
-----------------------------
many kms_frontbuffer_tracking subcases fail.
igt at kms_frontbuffer_tracking@fbc-1p-pri-sfb-multidraw-blt
igt at kms_frontbuffer_tracking@fbc-1p-pri-sfb-multidraw-mmap-cpu
igt at kms_frontbuffer_tracking@fbc-1p-pri-sfb-multidraw-mmap-gtt
igt at kms_frontbuffer_tracking@fbc-1p-pri-sfb-multidraw-mmap-wc
igt at kms_frontbuffer_tracking@fbc-1p-pri-sfb-multidraw-pwrite
igt at kms_frontbuffer_tracking@fbc-1p-pri-sfb-multidraw-render
igt at kms_frontbuffer_tracking@fbc-1p-primscrn-pri-mfb-draw-mmap-gtt
igt at kms_frontbuffer_tracking@fbc-1p-primscrn-pri-mfb-draw-mmap-wc
igt at kms_frontbuffer_tracking@fbc-1p-primscrn-pri-sfb-draw-mmap-wc
igt at kms_frontbuffer_tracking@fbc-1p-primscrn-spr-mfb-fullscreen
igt at kms_frontbuffer_tracking@fbc-1p-primscrn-spr-sfb-fullscreen

run ./kms_frontbuffer_tracking --run-subtest fbc-1p-pri-sfb-multidraw-blt
output:
IGT-Version: 1.11-gc83299d (x86_64) (Linux:
4.1.0-rc8_drm-intel-nightly_186047_20150619+ x86_64)
Primary screen: eDP Custom 1024x768
FBC last action not supported
Test assertion failure function igt_assert_crc_equal, file igt_debugfs.c:208:
Failed assertion: a->crc[i] == b->crc[i]
error: 0x2254da6f != 0x803881d9
Stack trace:
  #0 [__igt_fail_assert+0xf1]
  #1 [igt_assert_crc_equal+0x78]
  #2 [main+0x23bf]
  #3 [__libc_start_main+0xf5]
  #4 [_start+0x29]
  #5 [<unknown>+0x29]
Subtest fbc-1p-pri-sfb-multidraw-blt failed.
**** DEBUG ****
ef2eb233e]
Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
Calculated CRC: pipe:[3759c34e 00000000 00000000 00000000 00000000]
sink:[64fe4b32233e]
Calculated CRC: pipe:[3759c34e 00000000 00000000 00000000 00000000]
sink:[64fe4b32233e]
Calculated CRC: pipe:[867a95af 00000000 00000000 00000000 00000000]
sink:[00000000784d]
Calculated CRC: pipe:[867a95af 00000000 00000000 00000000 00000000]
sink:[00000000784d]
Method mmap-gtt
Calculated CRC: pipe:[2254da6f 00000000 00000000 00000000 00000000]
sink:[0000b8abc725]
Calculated CRC: pipe:[2254da6f 00000000 00000000 00000000 00000000]
sink:[0000b8abc725]
Calculated CRC: pipe:[803881d9 00000000 00000000 00000000 00000000]
sink:[7bbeb8abb3b6]
Calculated CRC: pipe:[803881d9 00000000 00000000 00000000 00000000]
sink:[7bbeb8abb3b6]
Calculated CRC: pipe:[b4ccdd5b 00000000 00000000 00000000 00000000]
sink:[64fef2eb233e]
Calculated CRC: pipe:[b4ccdd5b 00000000 00000000 00000000 00000000]
sink:[64fef2eb233e]
Calculated CRC: pipe:[3759c34e 00000000 00000000 00000000 00000000]
sink:[64fe4b32233e]
Calculated CRC: pipe:[3759c34e 00000000 00000000 00000000 00000000]
sink:[64fe4b32233e]
Calculated CRC: pipe:[867a95af 00000000 00000000 00000000 00000000]
sink:[00000000784d]
Calculated CRC: pipe:[867a95af 00000000 00000000 00000000 00000000]
sink:[00000000784d]
Method mmap-wc
Calculated CRC: pipe:[2254da6f 00000000 00000000 00000000 00000000]
sink:[0000b8abc725]
Calculated CRC: pipe:[2254da6f 00000000 00000000 00000000 00000000]
sink:[0000b8abc725]
Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
Calculated CRC: pipe:[2254da6f 00000000 00000000 00000000 00000000]
sink:[0000b8abc725]
Test assertion failure function igt_assert_crc_equal, file igt_debugfs.c:208:
Failed assertion: a->crc[i] == b->crc[i]
error: 0x2254da6f != 0x803881d9
****  END  ****
Subtest fbc-1p-pri-sfb-multidraw-blt: FAIL (5.451s)

==Reproduce steps==
---------------------------- 
1. ./kms_frontbuffer_tracking --run-subtest fbc-1p-pri-sfb-multidraw-blt

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