Bug 108993 - [CI][DRMTIP] igt@kms_plane@pixel-format-pipe-[bc]-planes* - incomplete - Suspicious CRC: it looks like the CRC read back was from a register in a powered down well
Summary: [CI][DRMTIP] igt@kms_plane@pixel-format-pipe-[bc]-planes* - incomplete - Susp...
Status: NEW
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: DRI git
Hardware: Other All
: medium normal
Assignee: Intel GFX Bugs mailing list
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard: ReadyForDev
Keywords:
Depends on:
Blocks:
 
Reported: 2018-12-09 19:16 UTC by Lakshmi
Modified: 2019-01-18 20:18 UTC (History)
2 users (show)

See Also:
i915 platform: ICL
i915 features:


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Description Lakshmi 2018-12-09 19:16:41 UTC
https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_155/fi-icl-u3/igt@kms_plane@pixel-format-pipe-b-planes-source-clamping.html

Err:

Starting subtest: pixel-format-pipe-B-planes-source-clamping
(kms_plane:1026) igt_debugfs-WARNING: Warning on condition crc->crc[i] == 0xffffffff in function crc_sanity_checks, file ../lib/igt_debugfs.c:896
(kms_plane:1026) igt_debugfs-WARNING: Suspicious CRC: it looks like the CRC read back was from a register in a powered down well
(kms_plane:1026) igt_debugfs-WARNING: Warning on condition crc->crc[i] == 0xffffffff in function crc_sanity_checks, file ../lib/igt_debugfs.c:896
(kms_plane:1026) igt_debugfs-WARNING: Suspicious CRC: it looks like the CRC read back was from a register in a powered down well
(kms_plane:1026) igt_debugfs-WARNING: Warning on condition crc->crc[i] == 0xffffffff in function crc_sanity_checks, file ../lib/igt_debugfs.c:896
(kms_plane:1026) igt_debugfs-WARNING: Suspicious CRC: it looks like the CRC read back was from a register in a powered down well
(kms_plane:1026) igt_debugfs-WARNING: Warning on condition crc->crc[i] == 0xffffffff in function crc_sanity_checks, file ../lib/igt_debugfs.c:896
(kms_plane:1026) igt_debugfs-WARNING: Suspicious CRC: it looks like the CRC read back was from a register in a powered down well
(kms_plane:1026) igt_debugfs-WARNING: Warning on condition crc->crc[i] == 0xffffffff in function crc_sanity_checks, file ../lib/igt_debugfs.c:896
(kms_plane:1026) igt_debugfs-WARNING: Suspicious CRC: it looks like the CRC read back was from a register in a powered down well
(kms_plane:1026) igt_debugfs-WARNING: Warning on condition crc->crc[i] == 0xffffffff in function crc_sanity_checks, file ../lib/igt_debugfs.c:896

Dmeg-warnings:
<3> [50.168556] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun
<3> [50.169200] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun
<3> [707.833240] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun
<3> [708.766762] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun
<3> [713.849752] [drm:drm_crtc_add_crc_entry] *ERROR* Overflow of CRC buffer, userspace reads too slow.
<3> [808.355118] [drm:drm_crtc_add_crc_entry] *ERROR* Overflow of CRC buffer, userspace reads too slow.
<3> [902.960505] [drm:drm_crtc_add_crc_entry] *ERROR* Overflow of CRC buffer, userspace reads too slow.
<3> [997.499221] [drm:drm_crtc_add_crc_entry] *ERROR* Overflow of CRC buffer, userspace reads too slow.
<3> [1092.087930] [drm:drm_crtc_add_crc_entry] *ERROR* Overflow of CRC buffer, userspace reads too slow.
<3> [1186.676644] [drm:drm_crtc_add_crc_entry] *ERROR* Overflow of CRC buffer, userspace reads too slow.
Comment 4 Jani Saarinen 2019-01-11 11:26:20 UTC
Stan, is this duplicate of https://bugs.freedesktop.org/show_bug.cgi?id=108336?
Comment 5 Stanislav Lisovskiy 2019-01-11 12:03:43 UTC
(In reply to Jani Saarinen from comment #4)
> Stan, is this duplicate of
> https://bugs.freedesktop.org/show_bug.cgi?id=108336?

I think yes. Current clue is that setting atomic property for plane size breaks it at some point. If I change the test case so that plane size is smaller, the problem goes away. Still don't understand how plane size affects this though.
Comment 6 CI Bug Log 2019-01-18 20:18:01 UTC
A CI Bug Log filter associated to this bug has been updated:

{- ICL: igt@kms_plane@pixel-format-pipe-[bc]-planes*- incomplete - Suspicious CRC: it looks like the CRC read back was from a register in a power -}
{+ ICL: igt@kms_plane@pixel-format-pipe-[abc]-planes*- incomplete - Suspicious CRC: it looks like the CRC read back was from a register in a power +}

New failures caught by the filter:

* https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_196/fi-icl-u2/igt@kms_plane@pixel-format-pipe-a-planes-source-clamping.html
* https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_5448/shard-iclb3/igt@kms_plane@pixel-format-pipe-a-planes-source-clamping.html
* https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_193/fi-icl-u3/igt@kms_plane@pixel-format-pipe-a-planes-source-clamping.html
* https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_194/fi-icl-u3/igt@kms_plane@pixel-format-pipe-a-planes-source-clamping.html


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