Bug 97830 - [BAT] [SKL Gt4e] kms_frontbuffer_tracking@basic fails due to FIFO underruns
Summary: [BAT] [SKL Gt4e] kms_frontbuffer_tracking@basic fails due to FIFO underruns
Status: CLOSED WORKSFORME
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: DRI git
Hardware: x86-64 (AMD64) Linux (All)
: highest blocker
Assignee: Paulo Zanoni
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-09-16 06:59 UTC by Jani Saarinen
Modified: 2016-11-09 16:21 UTC (History)
1 user (show)

See Also:
i915 platform: SKL
i915 features: display/Other

Attachments
Dmesg before run (98.25 KB, text/plain)
2016-09-16 07:48 UTC, Jani Saarinen 		no flags Details
Dmesg during run (15.81 MB, text/plain)
2016-09-16 07:49 UTC, Jani Saarinen 		no flags Details
SKL__kms_frontbuffer_tracking__basic__kern.log (376.73 KB, text/plain)
2016-09-27 09:44 UTC, cprigent 		no flags Details
SKL__kms_frontbuffer_tracking__basic__output (9.15 KB, text/plain)
2016-09-27 09:44 UTC, cprigent 		no flags Details
SKL__kms_frontbuffer_tracking__kern.log (1.78 MB, text/plain)
2016-09-30 13:21 UTC, cprigent 		no flags Details
SKL__kms_frontbuffer_tracking__output (387.56 KB, text/plain)
2016-09-30 13:22 UTC, cprigent 		no flags Details
View All

Description Jani Saarinen 2016-09-16 06:59:15 UTC 
On fi-skl-6770hq (newly added) kms_frontbuffer_tracking@basic fails

E.g. for the last incomplete run CI_DRM_1640 (15-Sep-2016) dmesg has following

stdout:
IGT-Version: 1.16-g237cb89 (x86_64) (Linux: 4.8.0-rc5-CI-CI_DRM_1640+ x86_64)
Primary screen: DP 3840x2160, crtc 26
FBC last action not supported
Can't test PSR: no usable eDP screen.
Sink CRC not supported: primary screen is not eDP
Stack trace:
  #0 [__igt_fail_assert+0x101]
  #1 [igt_assert_crc_equal+0x73]
  #2 [basic_subtest+0x4b4]
  #3 [main+0x1cf3]
  #4 [__libc_start_main+0xf0]
  #5 [_start+0x29]
  #6 [<unknown>+0x29]
Subtest basic: FAIL (1.912s)

Stderr	
(kms_frontbuffer_tracking:10804) igt-debugfs-CRITICAL: Test assertion failure function igt_assert_crc_equal, file igt_debugfs.c:266:
(kms_frontbuffer_tracking:10804) igt-debugfs-CRITICAL: Failed assertion: a->crc[i] == b->crc[i]
(kms_frontbuffer_tracking:10804) igt-debugfs-CRITICAL: error: 0x81d8e736 != 0x3234708f
Subtest basic failed.
**** DEBUG ****
(kms_frontbuffer_tracking:10804) igt-fb-DEBUG: igt_create_fb_with_bo_size(width=1024, height=1024, format=0x34325258, tiling=0x100000000000001, size=4194304)
(kms_frontbuffer_tracking:10804) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10804) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10804) igt-fb-DEBUG: igt_create_fb_with_bo_size(handle=4, pitch=4096)
(kms_frontbuffer_tracking:10804) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10804) igt-fb-DEBUG: igt_create_fb_with_bo_size(width=4340, height=3684, format=0x34325258, tiling=0x100000000000001, size=64200704)
(kms_frontbuffer_tracking:10804) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10804) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10804) igt-fb-DEBUG: igt_create_fb_with_bo_size(handle=5, pitch=17408)
(kms_frontbuffer_tracking:10804) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10804) igt-fb-DEBUG: igt_create_fb_with_bo_size(width=3840, height=2160, format=0x34325258, tiling=0x100000000000001, size=33177600)
(kms_frontbuffer_tracking:10804) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10804) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10804) igt-fb-DEBUG: igt_create_fb_with_bo_size(handle=6, pitch=15360)
(kms_frontbuffer_tracking:10804) DEBUG: Blue CRC:   pipe:[ceb4bb1f 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10804) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10804) igt-fb-DEBUG: igt_create_fb_with_bo_size(width=3840, height=2160, format=0x34325258, tiling=0x100000000000001, size=33177600)
(kms_frontbuffer_tracking:10804) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10804) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10804) igt-fb-DEBUG: igt_create_fb_with_bo_size(handle=6, pitch=15360)
(kms_frontbuffer_tracking:10804) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10804) igt-fb-DEBUG: igt_create_fb_with_bo_size(width=3840, height=2160, format=0x34325258, tiling=0x100000000000001, size=33177600)
(kms_frontbuffer_tracking:10804) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10804) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10804) igt-fb-DEBUG: igt_create_fb_with_bo_size(handle=7, pitch=15360)
(kms_frontbuffer_tracking:10804) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10804) igt-fb-DEBUG: igt_create_fb_with_bo_size(width=3840, height=2160, format=0x34325258, tiling=0x100000000000001, size=33177600)
(kms_frontbuffer_tracking:10804) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10804) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10804) igt-fb-DEBUG: igt_create_fb_with_bo_size(handle=8, pitch=15360)
(kms_frontbuffer_tracking:10804) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10804) igt-fb-DEBUG: igt_create_fb_with_bo_size(width=3840, height=2160, format=0x34325258, tiling=0x100000000000001, size=33177600)
(kms_frontbuffer_tracking:10804) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10804) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10804) igt-fb-DEBUG: igt_create_fb_with_bo_size(handle=9, pitch=15360)
(kms_frontbuffer_tracking:10804) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10804) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10804) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10804) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10804) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10804) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10804) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10804) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10804) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10804) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10804) DEBUG: Rect 0 CRC: pipe:[6dcf8e62 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10804) DEBUG: Rect 1 CRC: pipe:[9e690206 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10804) DEBUG: Rect 2 CRC: pipe:[7ddf2431 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10804) DEBUG: Rect 3 CRC: pipe:[3234708f 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10804) DEBUG: Calculated CRC: pipe:[ceb4bb1f 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10804) DEBUG: Calculated CRC: pipe:[ceb4bb1f 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10804) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10804) igt-fb-DEBUG: igt_create_fb_with_bo_size(width=3840, height=2160, format=0x34325258, tiling=0x100000000000001, size=33177600)
(kms_frontbuffer_tracking:10804) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10804) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10804) igt-fb-DEBUG: igt_create_fb_with_bo_size(handle=8, pitch=15360)
(kms_frontbuffer_tracking:10804) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10804) DEBUG: Calculated CRC: pipe:[6dcf8e62 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10804) DEBUG: Calculated CRC: pipe:[6dcf8e62 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10804) DEBUG: Calculated CRC: pipe:[9e690206 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10804) DEBUG: Calculated CRC: pipe:[9e690206 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10804) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10804) DEBUG: Calculated CRC: pipe:[7ddf2431 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10804) DEBUG: Calculated CRC: pipe:[7ddf2431 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10804) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10804) DEBUG: Calculated CRC: pipe:[81d8e736 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10804) igt-debugfs-CRITICAL: Test assertion failure function igt_assert_crc_equal, file igt_debugfs.c:266:
(kms_frontbuffer_tracking:10804) igt-debugfs-CRITICAL: Failed assertion: a->crc[i] == b->crc[i]
(kms_frontbuffer_tracking:10804) igt-debugfs-CRITICAL: error: 0x81d8e736 != 0x3234708f
****  END  ****
Comment 1 Jani Saarinen 2016-09-16 07:48:50 UTC 
Created attachment 126568 [details]
Dmesg before run
Comment 2 Jani Saarinen 2016-09-16 07:49:55 UTC 
Created attachment 126569 [details]
Dmesg during run
Comment 3 cprigent 2016-09-27 09:44:37 UTC 
Created attachment 126801 [details]
SKL__kms_frontbuffer_tracking__basic__kern.log

Reproduced with 4.8.0-rc8 aab15c2

Platform SKL Skull Canyon: NUC6i7KYK
CPU: Intel® Core(TM) i7-6770HQ CPU @ 2.6GHz (family 6, model 94, stepping 3)
GPU: Intel® IrisTM Pro Graphics 580 - Intel Corporation Sky Lake Integrated Graphics (rev 09)
Motherboard version: H90766-405
Memory: 2 x 4GB card Kingston KVR21S15S8/4

Software
Bios: KYSKLi70.86A.0041.2016.0817.1130 from https://downloadcenter.intel.com/downloads/eula/26210/BIOS-Update-KYSKLi70-86A-?httpDown=https%3A%2F%2Fdownloadmirror.intel.com%2F26210%2Feng%2FKY0041.bio
Linux distribution: Ubuntu 16.04 64 bits
DMC 1.26 from https://01.org/sites/default/files/downloads/intelr-graphics-linux/skldmcver126.tar_1.bz2
GUC 6.1 from https://01.org/sites/default/files/downloads/intelr-graphics-linux/sklgucver61.tar.bz2

Kernel: 4.8.0-rc8 aab15c2 from http://cgit.freedesktop.org/drm-intel/
   commit aab15c274da587bcab19376d2caa9d6626440335
   Author: Jani Nikula <jani.nikula@intel.com>
   Date:   Mon Sep 26 15:11:53 2016 +0300
   drm-intel-nightly: 2016y-09m-26d-12h-11m-33s UTC integration manifest
libdrm-2.4.70-14 0659558 from git://anongit.freedesktop.org/mesa/drm
mesa: mesa-12.0.0 8b06176 from git://anongit.freedesktop.org/mesa/mesa
cairo 1.15.2 db8a7f1 from git://anongit.freedesktop.org/cairo
xorg-server-1.18.99.901-14 ba199cb from git://git.freedesktop.org/git/xorg/xserver
xf86-video-intel 2.99.917-708 8f33f80 from git://git.freedesktop.org/git/xorg/driver/xf86-video-intel
libva-1.7.2-38 3b7e499 from git://git.freedesktop.org/git/vaapi/libva 
vaapi-intel-driver: 1.7.2-101 302cf63 from git://git.freedesktop.org/git/vaapi/intel-driver
IGT: intel-gpu-tools-1.16-30 32b2021 from http://anongit.freedesktop.org/git/xorg/app/intel-gpu-tools.git

External screens: ASUS PB287Q (DP), DELL P2715Qt (HDMI)
Comment 4 cprigent 2016-09-27 09:44:58 UTC 
Created attachment 126803 [details]
SKL__kms_frontbuffer_tracking__basic__output
Comment 5 Jani Saarinen 2016-09-27 09:53:25 UTC 
As sent email, could you run ./kms_frontbuffer_tracking and get same data out.
Comment 6 cprigent 2016-09-30 13:21:38 UTC 
Created attachment 126895 [details]
SKL__kms_frontbuffer_tracking__kern.log
Comment 7 cprigent 2016-09-30 13:22:18 UTC 
Created attachment 126896 [details]
SKL__kms_frontbuffer_tracking__output
Comment 8 cprigent 2016-09-30 13:23:07 UTC 
Full kms_frontbuffer_tracking logs attached.
Tested with same config as comment 3.
Comment 9 yann 2016-10-11 06:55:15 UTC 
Please re-test with Paulo's patch to apply memory workarounds for skylake: https://patchwork.freedesktop.org/series/13548/
Comment 10 Jani Saarinen 2016-10-11 06:59:04 UTC 
With that series:
Stdout	
IGT-Version: 1.16-g48a9e1e (x86_64) (Linux: 4.8.0-CI-Patchwork_2665+ x86_64)
Primary screen: DP 3840x2160, crtc 26
FBC last action not supported
FBC compression information not supported
Can't test PSR: no usable eDP screen.
Sink CRC not supported: primary screen is not eDP
Stack trace:
  #0 [__igt_fail_assert+0x101]
  #1 [igt_assert_crc_equal+0x73]
  #2 [basic_subtest+0x4b4]
  #3 [main+0x1cf3]
  #4 [__libc_start_main+0xf0]
  #5 [_start+0x29]
  #6 [<unknown>+0x29]
Subtest basic: FAIL (1.882s)
Stderr	
(kms_frontbuffer_tracking:10973) igt-debugfs-CRITICAL: Test assertion failure function igt_assert_crc_equal, file igt_debugfs.c:276:
(kms_frontbuffer_tracking:10973) igt-debugfs-CRITICAL: Failed assertion: a->crc[i] == b->crc[i]
(kms_frontbuffer_tracking:10973) igt-debugfs-CRITICAL: error: 0x81d8e736 != 0x3234708f
Subtest basic failed.
**** DEBUG ****
(kms_frontbuffer_tracking:10973) igt-fb-DEBUG: igt_create_fb_with_bo_size(width=1024, height=1024, format=0x34325258, tiling=0x100000000000001, size=4194304)
(kms_frontbuffer_tracking:10973) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10973) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10973) igt-fb-DEBUG: igt_create_fb_with_bo_size(handle=4, pitch=4096)
(kms_frontbuffer_tracking:10973) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10973) igt-fb-DEBUG: igt_create_fb_with_bo_size(width=4340, height=3684, format=0x34325258, tiling=0x100000000000001, size=64200704)
(kms_frontbuffer_tracking:10973) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10973) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10973) igt-fb-DEBUG: igt_create_fb_with_bo_size(handle=5, pitch=17408)
(kms_frontbuffer_tracking:10973) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10973) igt-fb-DEBUG: igt_create_fb_with_bo_size(width=3840, height=2160, format=0x34325258, tiling=0x100000000000001, size=33177600)
(kms_frontbuffer_tracking:10973) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10973) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10973) igt-fb-DEBUG: igt_create_fb_with_bo_size(handle=6, pitch=15360)
(kms_frontbuffer_tracking:10973) DEBUG: Blue CRC:   pipe:[ceb4bb1f 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10973) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10973) igt-fb-DEBUG: igt_create_fb_with_bo_size(width=3840, height=2160, format=0x34325258, tiling=0x100000000000001, size=33177600)
(kms_frontbuffer_tracking:10973) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10973) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10973) igt-fb-DEBUG: igt_create_fb_with_bo_size(handle=6, pitch=15360)
(kms_frontbuffer_tracking:10973) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10973) igt-fb-DEBUG: igt_create_fb_with_bo_size(width=3840, height=2160, format=0x34325258, tiling=0x100000000000001, size=33177600)
(kms_frontbuffer_tracking:10973) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10973) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10973) igt-fb-DEBUG: igt_create_fb_with_bo_size(handle=7, pitch=15360)
(kms_frontbuffer_tracking:10973) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10973) igt-fb-DEBUG: igt_create_fb_with_bo_size(width=3840, height=2160, format=0x34325258, tiling=0x100000000000001, size=33177600)
(kms_frontbuffer_tracking:10973) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10973) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10973) igt-fb-DEBUG: igt_create_fb_with_bo_size(handle=8, pitch=15360)
(kms_frontbuffer_tracking:10973) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10973) igt-fb-DEBUG: igt_create_fb_with_bo_size(width=3840, height=2160, format=0x34325258, tiling=0x100000000000001, size=33177600)
(kms_frontbuffer_tracking:10973) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10973) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10973) igt-fb-DEBUG: igt_create_fb_with_bo_size(handle=9, pitch=15360)
(kms_frontbuffer_tracking:10973) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10973) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10973) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10973) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10973) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10973) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10973) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10973) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10973) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10973) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10973) DEBUG: Rect 0 CRC: pipe:[6dcf8e62 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10973) DEBUG: Rect 1 CRC: pipe:[9e690206 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10973) DEBUG: Rect 2 CRC: pipe:[7ddf2431 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10973) DEBUG: Rect 3 CRC: pipe:[3234708f 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10973) DEBUG: Calculated CRC: pipe:[ceb4bb1f 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10973) DEBUG: Calculated CRC: pipe:[ceb4bb1f 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10973) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10973) igt-fb-DEBUG: igt_create_fb_with_bo_size(width=3840, height=2160, format=0x34325258, tiling=0x100000000000001, size=33177600)
(kms_frontbuffer_tracking:10973) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10973) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd)
(kms_frontbuffer_tracking:10973) igt-fb-DEBUG: igt_create_fb_with_bo_size(handle=8, pitch=15360)
(kms_frontbuffer_tracking:10973) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10973) DEBUG: Calculated CRC: pipe:[6dcf8e62 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10973) DEBUG: Calculated CRC: pipe:[6dcf8e62 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10973) DEBUG: Calculated CRC: pipe:[9e690206 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10973) DEBUG: Calculated CRC: pipe:[9e690206 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10973) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10973) DEBUG: Calculated CRC: pipe:[7ddf2431 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10973) DEBUG: Calculated CRC: pipe:[7ddf2431 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10973) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5
(kms_frontbuffer_tracking:10973) DEBUG: Calculated CRC: pipe:[81d8e736 00000000 00000000 00000000 00000000] sink:[unsupported!]
(kms_frontbuffer_tracking:10973) igt-debugfs-CRITICAL: Test assertion failure function igt_assert_crc_equal, file igt_debugfs.c:276:
(kms_frontbuffer_tracking:10973) igt-debugfs-CRITICAL: Failed assertion: a->crc[i] == b->crc[i]
(kms_frontbuffer_tracking:10973) igt-debugfs-CRITICAL: error: 0x81d8e736 != 0x3234708f
****  END  ****

Environment	
PIGLIT_PLATFORM="mixed_glx_egl" PIGLIT_SOURCE_DIR="/opt/igt/piglit"
Command	/opt/igt/tests/kms_frontbuffer_tracking --run-subtest basic
dmesg
Comment 11 Jani Saarinen 2016-11-09 08:17:11 UTC 
Based on data on CI I marked this is already fixed. Something got fixed but not sure what.

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.