Bug 88977

Summary: [BSW]igt/kms_cursor_crc/cursor-size-change sporadically causes *ERROR* CPU pipe B FIFO underrun
Product: DRI Reporter: lu hua <huax.lu>
Component: DRM/IntelAssignee: Intel GFX Bugs mailing list <intel-gfx-bugs>
Status: CLOSED FIXED QA Contact: Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity: normal    
Priority: medium CC: christophe.prigent, intel-gfx-bugs
Version: unspecified   
Hardware: All   
OS: Linux (All)   
Whiteboard:
i915 platform: BSW/CHT i915 features: display/Other
Attachments:
Description Flags
dmesg none

Description lu hua 2015-02-05 03:26:50 UTC 
==System Environment==
--------------------------
Regression: not sure

==kernel==
--------------------------
drm-intel-nightly/0eafcbf6bc5917efd97c9916329c6f859cfb41ed
commit 0eafcbf6bc5917efd97c9916329c6f859cfb41ed
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Tue Feb 3 19:19:19 2015 +0100

    drm-intel-nightly: 2015y-02m-03d-18h-18m-53s UTC integration manifest

==Bug detailed description==
-----------------------------
It sporadically causes <3>[ 1337.391545] [drm:valleyview_pipestat_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun. when run automation testing, run it 10 cycles manually, I am unable reproduce this error.

test log:
@test: Intel_gpu_tools/igt_gem_evict_everything_forked-multifd-interruptible
info: @@@Returncode: 0

test case start at: Sun Jan 25 14:55:05 2015
test case end at:   Sun Jan 25 14:55:17 2015

Errors:


Dmesg:
<3>[ 1337.391545] [drm:valleyview_pipestat_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun


Output:
             command   pid dev master a   uid      magic
Test Environment check: Succeeded.
[1/1] dmesg-warn: 1 |
[1/1] dmesg-warn: 1 /


Thank you for running Piglit!
Results have been written to /GFX/Test/Piglit/piglit/t
{
    "results_version": 2,
    "uname": "Linux x-bsw01 3.19.0-rc7_drm-intel-nightly_0eafcb_20150204+ #38 SMP Wed Feb 4 11:26:26 CST 2015 x86_64 x86_64 x86_64 GNU/Linux\n",
    "time_elapsed": 6.654932022094727,
    "tests": {
        "igt/gem_evict_everything/forked-multifd-interruptible": {
            "dmesg": "[ 1337.391545] [drm:valleyview_pipestat_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun",
            "returncode": 0,
            "err": "",
            "environment": "PIGLIT_SOURCE_DIR=\"/GFX/Test/Piglit/piglit\" PIGLIT_PLATFORM=\"mixed_glx_egl\"",
            "command": "/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests/gem_evict_everything --run-subtest forked-multifd-interruptible",
            "result": "dmesg-warn",
            "time": 6.459430932998657,
            "out": "IGT-Version: 1.9-g87edb51 (x86_64) (Linux: 3.19.0-rc7_drm-intel-nightly_0eafcb_20150204+ x86_64)\nSubtest forked-multifd-interruptible: SUCCESS (6.138s)\n"
        }
    },

==Reproduce steps==
---------------------------- 
1. run all igt cases
Comment 1 lu hua 2015-02-05 07:03:42 UTC 
gem_partial_pwrite_pread also has this issue.
@test: Intel_gpu_tools/igt_gem_partial_pwrite_pread_reads-display
info: @@@Returncode: 0

test case start at: Sun Jan 25 18:11:59 2015
test case end at:   Sun Jan 25 18:13:30 2015

Errors:


Dmesg:
<3>[ 1067.244381] [drm:valleyview_pipestat_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun


Output:
             command   pid dev master a   uid      magic
Test Environment check: Succeeded.
[1/1] dmesg-warn: 1 |
[1/1] dmesg-warn: 1 /


Thank you for running Piglit!
Results have been written to /GFX/Test/Piglit/piglit/t
{
    "results_version": 2,
    "uname": "Linux x-bsw01 3.19.0-rc7_drm-intel-nightly_9583cb_20150205+ #78 SMP Thu Feb 5 11:22:58 CST 2015 x86_64 x86_64 x86_64 GNU/Linux\n",
    "time_elapsed": 86.20326805114746,
    "tests": {
        "igt/gem_partial_pwrite_pread/reads-display": {
            "dmesg": "[ 1067.244381] [drm:valleyview_pipestat_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun",
            "returncode": 0,
            "err": "",
            "environment": "PIGLIT_SOURCE_DIR=\"/GFX/Test/Piglit/piglit\" PIGLIT_PLATFORM=\"mixed_glx_egl\"",
            "command": "/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests/gem_partial_pwrite_pread --run-subtest reads-display",
            "result": "dmesg-warn",
            "time": 85.9983479976654,
            "out": "IGT-Version: 1.9-g87edb51 (x86_64) (Linux: 3.19.0-rc7_drm-intel-nightly_9583cb_20150205+ x86_64)\nchecking partial reads\nSubtest reads-display: SUCCESS (85.858s)\n"
Comment 2 lu hua 2015-02-05 07:56:12 UTC 
gem_seqno_wrap also has this error.
@test: Intel_gpu_tools/igt_gem_seqno_wrap
info: @@@Returncode: 0

test case start at: Sun Jan 25 15:37:46 2015
test case end at:   Sun Jan 25 15:38:24 2015

Errors:


Dmesg:
<3>[   55.143550] [drm:valleyview_pipestat_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun


Output:
             command   pid dev master a   uid      magic
Test Environment check: Succeeded.
[1/1] dmesg-warn: 1 |
[1/1] dmesg-warn: 1 /


Thank you for running Piglit!
Results have been written to /GFX/Test/Piglit/piglit/t
{
    "results_version": 2,
    "uname": "Linux x-bsw01 3.19.0-rc7_drm-intel-nightly_0eafcb_20150204+ #38 SMP Wed Feb 4 11:26:26 CST 2015 x86_64 x86_64 x86_64 GNU/Linux\n",
    "time_elapsed": 32.82405996322632,
    "tests": {
        "igt/gem_seqno_wrap": {
            "dmesg": "[   55.143550] [drm:valleyview_pipestat_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun",
            "returncode": 0,
            "err": "",
            "environment": "PIGLIT_SOURCE_DIR=\"/GFX/Test/Piglit/piglit\" PIGLIT_PLATFORM=\"mixed_glx_egl\"",
            "command": "/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests/gem_seqno_wrap",
            "result": "dmesg-warn",
            "time": 32.59163308143616,
            "out": "IGT-Version: 1.9-g87edb51 (x86_64) (Linux: 3.19.0-rc7_drm-intel-nightly_0eafcb_20150204+ x86_64)\n"
        }
    },
Comment 3 lu hua 2015-02-05 07:57:38 UTC 
gem_userptr_blits_forked-sync-swapping-multifd-mempressure-interruptible also has this error.

@test: Intel_gpu_tools/igt_gem_userptr_blits_forked-sync-swapping-multifd-mempressure-interruptible
info: @@@Returncode: 0

test case start at: Sun Jan 25 15:48:40 2015
test case end at:   Sun Jan 25 15:49:19 2015

Errors:


Dmesg:
<3>[  711.421830] [drm:valleyview_pipestat_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun


Output:
             command   pid dev master a   uid      magic
Test Environment check: Succeeded.
[1/1] dmesg-warn: 1 |
[1/1] dmesg-warn: 1 /


Thank you for running Piglit!
Results have been written to /GFX/Test/Piglit/piglit/t
{
    "results_version": 2,
    "uname": "Linux x-bsw01 3.19.0-rc7_drm-intel-nightly_0eafcb_20150204+ #38 SMP Wed Feb 4 11:26:26 CST 2015 x86_64 x86_64 x86_64 GNU/Linux\n",
    "time_elapsed": 33.72999906539917,
    "tests": {
        "igt/gem_userptr_blits/forked-sync-swapping-multifd-mempressure-interruptible": {
            "dmesg": "[  711.421830] [drm:valleyview_pipestat_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun",
            "returncode": 0,
            "err": "",
            "environment": "PIGLIT_SOURCE_DIR=\"/GFX/Test/Piglit/piglit\" PIGLIT_PLATFORM=\"mixed_glx_egl\"",
            "command": "/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests/gem_userptr_blits --run-subtest forked-sync-swapping-multifd-mempressure-interruptible",
            "result": "dmesg-warn",
            "time": 33.49824404716492,
            "out": "IGT-Version: 1.9-g87edb51 (x86_64) (Linux: 3.19.0-rc7_drm-intel-nightly_0eafcb_20150204+ x86_64)\nAperture size is 2048 MiB\nTotal RAM is 3876 MiB\nTesting unsynchronized mappings...\nTesting synchronized mappings...\nSubtest forked-sync-swapping-multifd-mempressure-interruptible: SUCCESS (33.470s)\n"
        }
    },
Comment 4 lu hua 2015-02-05 08:09:41 UTC 
kms_cursor_crc_cursor-size-change also has this error.
@test: Intel_gpu_tools/igt_kms_cursor_crc_cursor-size-change
info: @@@Returncode: 0

test case start at: Sun Jan 25 16:06:30 2015
test case end at:   Sun Jan 25 16:06:40 2015

Errors:


Dmesg:
<3>[  406.217110] [drm:valleyview_pipestat_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun


Output:
             command   pid dev master a   uid      magic
Test Environment check: Succeeded.
[1/1] dmesg-fail: 1 |
[1/1] dmesg-fail: 1 /


Thank you for running Piglit!
Results have been written to /GFX/Test/Piglit/piglit/t
{
    "results_version": 2,
    "uname": "Linux x-bsw01 3.19.0-rc7_drm-intel-nightly_0eafcb_20150204+ #38 SMP Wed Feb 4 11:26:26 CST 2015 x86_64 x86_64 x86_64 GNU/Linux\n",
    "time_elapsed": 4.754825115203857,
    "tests": {
        "igt/kms_cursor_crc/cursor-size-change": {
            "dmesg": "[  406.217110] [drm:valleyview_pipestat_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun",
            "returncode": 99,
            "err": "(kms_cursor_crc:18358) CRITICAL: Test assertion failure function test_cursor_size, file kms_cursor_crc.c:426:\n(kms_cursor_crc:18358) CRITICAL: Failed assertion: igt_crc_equal(&crc[i], &ref_crc)\n",
            "environment": "PIGLIT_SOURCE_DIR=\"/GFX/Test/Piglit/piglit\" PIGLIT_PLATFORM=\"mixed_glx_egl\"",
            "command": "/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests/kms_cursor_crc --run-subtest cursor-size-change",
            "result": "dmesg-fail",
            "time": 4.528465986251831,
            "out": "IGT-Version: 1.9-g87edb51 (x86_64) (Linux: 3.19.0-rc7_drm-intel-nightly_0eafcb_20150204+ x86_64)\nBeginning cursor-size-change on pipe A, connector eDP-1\n\ncursor-size-change on pipe A, connector eDP-1: PASSED\n\nBeginning cursor-size-change on pipe B, connector eDP-1\nSubtest cursor-size-change: FAIL (4.464s)\n"
        }
    },
Comment 5 lu hua 2015-02-05 08:12:11 UTC 
kms_render_gpu-blit also has this error.
@test: Intel_gpu_tools/igt_kms_render_gpu-blit
info: @@@Returncode: 0

test case start at: Sun Jan 25 16:34:45 2015
test case end at:   Sun Jan 25 16:36:07 2015

Errors:


Dmesg:
<6>[ 1690.121356] [drm] HPD interrupt storm detected on connector eDP-1: switching from hotplug detection to polling
<3>[ 1697.299881] [drm:valleyview_pipestat_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun


Output:
             command   pid dev master a   uid      magic
Test Environment check: Succeeded.
[1/1] dmesg-warn: 1 |
[1/1] dmesg-warn: 1 /


Thank you for running Piglit!
Results have been written to /GFX/Test/Piglit/piglit/t
{
    "results_version": 2,
    "uname": "Linux x-bsw01 3.19.0-rc7_drm-intel-nightly_0eafcb_20150204+ #38 SMP Wed Feb 4 11:26:26 CST 2015 x86_64 x86_64 x86_64 GNU/Linux\n",
    "time_elapsed": 76.17300415039062,
    "tests": {
        "igt/kms_render/gpu-blit": {
            "dmesg": "[ 1697.299881] [drm:valleyview_pipestat_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun",
            "returncode": 0,
            "err": "",
            "environment": "PIGLIT_SOURCE_DIR=\"/GFX/Test/Piglit/piglit\" PIGLIT_PLATFORM=\"mixed_glx_egl\"",
            "command": "/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests/kms_render --run-subtest gpu-blit",
            "result": "dmesg-warn",
            "time": 76.0097291469574,
            "out": "IGT-Version: 1.9-g87edb51 (x86_64) (Linux: 3.19.0-rc7_drm-intel-nightly_0eafcb_20150204+ x86_64)\nBeginning test gpu-blit with 1920x1080 @ 60Hz / RGB565 on pipe A, encoder TMDS, connector eDP\nTest gpu-blit with 1920x1080 @ 60Hz / RGB565 on pipe A, encoder TMDS, connector eDP: PASSED\nBeginning test gpu-blit with 1920x1080 @ 60Hz / XRGB8888 on pipe A, encoder TMDS, connector eDP\nTest gpu-blit with 1920x1080 @ 60Hz / XRGB8888 on pipe A, encoder TMDS, connector eDP: PASSED\nBeginning test gpu-blit with 1920x1080 @ 60Hz / XRGB2101010 on pipe A, encoder TMDS, connector eDP\nTest gpu-blit with 1920x1080 @ 60Hz / XRGB2101010 on pipe A, encoder TMDS, connector eDP: PASSED\nBeginning test gpu-blit with 1920x1080 @ 60Hz / ARGB8888 on pipe A, encoder TMDS, connector eDP\nTest gpu-blit with 1920x1080 @ 60Hz / ARGB8888 on pipe A, encoder TMDS, connector eDP: PASSED\nBeginning test gpu-blit with 1920x1080 @ 60Hz / RGB565 on pipe B, encoder TMDS, connector eDP\nTest gpu-blit with 1920x1080 @ 60Hz / RGB565 on pipe B, encoder TMDS, connector eDP: PASSED\nBeginning test gpu-blit with 1920x1080 @ 60Hz / XRGB8888 on pipe B, encoder TMDS, connector eDP\nTest gpu-blit with 1920x1080 @ 60Hz / XRGB8888 on pipe B, encoder TMDS, connector eDP: PASSED\nBeginning test gpu-blit with 1920x1080 @ 60Hz / XRGB2101010 on pipe B, encoder TMDS, connector eDP\nTest gpu-blit with 1920x1080 @ 60Hz / XRGB2101010 on pipe B, encoder TMDS, connector eDP: PASSED\nBeginning test gpu-blit with 1920x1080 @ 60Hz / ARGB8888 on pipe B, encoder TMDS, connector eDP\nTest gpu-blit with 1920x1080 @ 60Hz / ARGB8888 on pipe B, encoder TMDS, connector eDP: PASSED\nSubtest gpu-blit: SUCCESS (74.839s)\n"
        }
    },
Comment 6 Ville Syrjala 2015-02-05 09:45:12 UTC 
Once again try to disable "dynamic memory self refresh" in the BIOS and see if the problem goes away.
Comment 7 lu hua 2015-02-06 05:55:42 UTC 
I reproduce this error when run case kms_cursor_crc/cursor-size-change. I am unable to reproduce error when run following case manually.
gem_evict_everything
gem_partial_pwrite_pread_reads-display
gem_seqno_wrap
gem_userptr_blits_forked-sync-swapping-multifd-mempressure-interruptible
kms_render_gpu-blit

output:
IGT-Version: 1.9-gbef692d (x86_64) (Linux: 3.19.0-rc7_drm-intel-nightly_75ce8a_20150206+ x86_64)
Beginning cursor-size-change on pipe A, connector eDP-1
(kms_cursor_crc:4335) CRITICAL: Test assertion failure function test_cursor_size, file kms_cursor_crc.c:426:
(kms_cursor_crc:4335) CRITICAL: Failed assertion: igt_crc_equal(&crc[i], &ref_crc)
Subtest cursor-size-change: FAIL (1.672s)
IGT-Version: 1.9-gbef692d (x86_64) (Linux: 3.19.0-rc7_drm-intel-nightly_75ce8a_20150206+ x86_64)
Beginning cursor-size-change on pipe A, connector eDP-1
(kms_cursor_crc:4336) CRITICAL: Test assertion failure function test_cursor_size, file kms_cursor_crc.c:426:
(kms_cursor_crc:4336) CRITICAL: Failed assertion: igt_crc_equal(&crc[i], &ref_crc)
Subtest cursor-size-change: FAIL (1.645s)
IGT-Version: 1.9-gbef692d (x86_64) (Linux: 3.19.0-rc7_drm-intel-nightly_75ce8a_20150206+ x86_64)
Beginning cursor-size-change on pipe A, connector eDP-1
(kms_cursor_crc:4337) CRITICAL: Test assertion failure function test_cursor_size, file kms_cursor_crc.c:426:
(kms_cursor_crc:4337) CRITICAL: Failed assertion: igt_crc_equal(&crc[i], &ref_crc)
Subtest cursor-size-change: FAIL (1.691s)
IGT-Version: 1.9-gbef692d (x86_64) (Linux: 3.19.0-rc7_drm-intel-nightly_75ce8a_20150206+ x86_64)
Beginning cursor-size-change on pipe A, connector eDP-1
(kms_cursor_crc:4338) CRITICAL: Test assertion failure function test_cursor_size, file kms_cursor_crc.c:426:
(kms_cursor_crc:4338) CRITICAL: Failed assertion: igt_crc_equal(&crc[i], &ref_crc)
Subtest cursor-size-change: FAIL (1.668s)
IGT-Version: 1.9-gbef692d (x86_64) (Linux: 3.19.0-rc7_drm-intel-nightly_75ce8a_20150206+ x86_64)
Beginning cursor-size-change on pipe A, connector eDP-1
(kms_cursor_crc:4339) CRITICAL: Test assertion failure function test_cursor_size, file kms_cursor_crc.c:426:
(kms_cursor_crc:4339) CRITICAL: Failed assertion: igt_crc_equal(&crc[i], &ref_crc)
Subtest cursor-size-change: FAIL (1.636s)

# dmesg -r|egrep "<[1-4]>"|grep drm
<3>[  101.338288] [drm:valleyview_pipestat_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun

Disable "dynamic memory self refresh"in BIOS,then run kms_cursor_crc/cursor-size-change 10 cycles. I don't meet this error.
Comment 8 lu hua 2015-02-06 05:56:45 UTC 
Created attachment 113216 [details]
dmesg
Comment 9 ye.tian 2015-04-23 07:28:13 UTC 
Teset it on the latest nightly kernel and latest igt, It still exists.

output:
--------------------
root@x-bsw08:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# ./kms_cursor_crc --run-subtest cursor-size-change
IGT-Version: 1.10-ge1ce5ea (x86_64) (Linux: 4.0.0_drm-intel-nightly_b9fe35_20150421+ x86_64)
Beginning cursor-size-change on pipe A, connector eDP-1
Test assertion failure function igt_assert_crc_equal, file igt_debugfs.c:207:
Failed assertion: a->crc[i] == b->crc[i]
error: 0x2cae1c != 0x63f27f
Stack trace:
  #0 [__igt_fail_assert+0xf1]
  #1 [igt_assert_crc_equal+0x78]
  #2 [test_cursor_size+0x1b1]
  #3 [run_test.constprop.3+0x212]
  #4 [__real_main556+0x1a0]
  #5 [main+0x21]
  #6 [__libc_start_main+0xf5]
  #7 [_start+0x29]
  #8 [<unknown>+0x29]
Subtest cursor-size-change failed.
**** DEBUG ****
Test requirement passed: cursor_w <= data->cursor_max_w && cursor_h <= data->cursor_max_h
display: eDP-1: set_pipe(A)
display: A.3: plane_set_fb(0)
display: commit {
display:     eDP-1: Selecting pipe A
display:     eDP-1: SetCursor pipe A, disabling
display: }
igt_create_fb_with_bo_size(width=1920, height=1080, format=0x34325258 [bpp=32], tiling=0x0, size=0
igt_create_fb_with_bo_size(handle=1, pitch=7680)
display: A.0: plane_set_fb(51)
display: commit {
display:     eDP-1: Selecting pipe A
display:     eDP-1: SetCrtc pipe A, fb 51, panning (0, 0), mode 1920x1080
display: }
display: A.3: plane_set_fb(0)
Beginning cursor-size-change on pipe A, connector eDP-1
igt_create_fb_with_bo_size(width=256, height=256, format=0x34325241 [bpp=32], tiling=0x0, size=0
igt_create_fb_with_bo_size(handle=2, pitch=1024)
display: A.3: plane_set_fb(53)
display: A.3: plane_set_size (256x256)
display: A.3: plane_set_fb(0)
display: commit {
display:     eDP-1: Selecting pipe A
display:     eDP-1: SetCursor pipe A, disabling
display: }
Test assertion failure function igt_assert_crc_equal, file igt_debugfs.c:207:
Failed assertion: a->crc[i] == b->crc[i]
error: 0x2cae1c != 0x63f27f
****  END  ****
Subtest cursor-size-change: FAIL (1.866s)

root@x-bsw08:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# dmesg  -r | grep ERROR
<3>[  479.146745] [drm:valleyview_pipestat_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
Comment 10 Jani Nikula 2015-10-30 13:23:45 UTC 
Please try Ville's FIFO underrun elimination series [1] on top of drm-intel-nightly, also available at [2], and report back.

[1] http://mid.gmane.org/1446146763-31821-1-git-send-email-ville.syrjala@linux.intel.com
[2] git://github.com/vsyrjala/linux.git pch_fifo_underrun_fix_4
Comment 11 Jani Nikula 2015-11-12 15:09:20 UTC 
(In reply to Jani Nikula from comment #10)
> Please try Ville's FIFO underrun elimination series [1] on top of
> drm-intel-nightly, also available at [2], and report back.
> 
> [1]
> http://mid.gmane.org/1446146763-31821-1-git-send-email-ville.syrjala@linux.
> intel.com
> [2] git://github.com/vsyrjala/linux.git pch_fifo_underrun_fix_4

The series has been merged to drm-intel-nightly. Please retest that.
Comment 12 Elio 2015-11-25 20:32:00 UTC 
The problem persists on BYT with 
kms_render@gpu-blit

Latest graphic stack configuration
Ubuntu 15.04 
Kernel: 4.4.0-rc1-nightly+

Stdout	
IGT-Version: 1.12-gb68a642 (x86_64) (Linux: 4.4.0-rc1-nightly+ x86_64)
Stack trace:
  #0 [__igt_fail_assert+0x101]
  #1 [__gem_mmap__gtt+0x0]
  #2 [gem_quiescent_gpu+0xa3]
  #3 [drm_open_driver+0x67]
  #4 [drm_open_driver_master+0x6]
  #5 [__real_main221+0x117]
  #6 [main+0x23]
  #7 [__libc_start_main+0xf0]
  #8 [_start+0x29]
  #9 [<unknown>+0x29]
Subtest gpu-blit: FAIL
Stderr	
Test assertion failure function gem_execbuf, file ioctl_wrappers.c:445:
Failed assertion: result == 0
Last errno: 5, Input/output error
Test kms_render failed.
**** DEBUG ****
(kms_render:5218) igt-core-DEBUG: Test requirement passed: !igt_run_in_simulation()
Test requirement passed: fd >= 0
Test assertion failure function gem_execbuf, file ioctl_wrappers.c:445:
Failed assertion: result == 0
Last errno: 5, Input/output error
****  END  ****
Comment 13 Jani Saarinen 2016-12-09 11:21:36 UTC 
Elio, is this issue still seen with latest kernel?
Comment 14 Ricardo 2017-02-23 21:49:28 UTC 
reviewed with ww08 IGT ALL results on BYT abd BSW the test is passing in both platforms

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