+@Mun, Gwan-gyeong, @Souza, Jose. See below from Imre.

-----Original Message-----
From: igt-dev <redacted> On Behalf Of Imre Deak
Sent: tiistai 4. toukokuuta 2021 21.54
To: Ville Syrjälä <redacted>
Cc: igt-dev@lists.freedesktop.org
Subject: Re: [igt-dev] ✗ Fi.CI.IGT: failure for lib/igt_fb: A few changes to fix test runs
on ADL_P

On Tue, May 04, 2021 at 06:13:11PM +0300, Ville Syrjälä wrote:

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On Tue, May 04, 2021 at 06:00:58PM +0300, Imre Deak wrote:

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On Fri, Apr 30, 2021 at 12:55:28AM +0000, Patchwork wrote:

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== Series Details ==

Series: lib/igt_fb: A few changes to fix test runs on ADL_P
URL   : https://patchwork.freedesktop.org/series/89668/
State : failure

== Summary ==

CI Bug Log - changes from CI_DRM_10028_full -> IGTPW_5771_full
====================================================

Summary
-------

  **FAILURE**

  Serious unknown changes coming with IGTPW_5771_full absolutely need to

be

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  verified manually.

  If you think the reported changes have nothing to do with the changes
  introduced in IGTPW_5771_full, please notify your bug team to allow them
  to document this new failure mode, which will reduce false positives in CI.

  External URL:
https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_5771/index.html

Possible new issues
-------------------

  Here are the unknown changes that may have been introduced in

IGTPW_5771_full:

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### IGT changes ###

#### Possible regressions ####

  * igt@kms_plane@pixel-format-pipe-a-planes:
    - shard-tglb:         [PASS][1] -> [SKIP][2]
   [1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_10028/shard-

tglb3/igt@kms_plane@pixel-format-pipe-a-planes.html

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   [2]:
https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_5771/shard-tglb7/ig
t@kms_plane@pixel-format-pipe-a-planes.html

Test requirement not met in function test_format_plane, file

../tests/kms_plane.c:912:

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Test requirement: num_unique_crcs(ref_crc[PLANAR_CRC_SET],
data->num_colors) > 1

after a bunch of CRC mismatches, so I suppose the CRC generation
gets stuck at one point.

It's on the same path this patchset changes, however on TGL the
patchset should have no functional change: the stride calculated by
__intel_buf_init() and the stride passed to it by
igt_fb_create_intel_buf() always match based on my tests. After
testing the same CI testlist locally on 2 TGLs, I also rerun the
testlist where this problem didn't happen:

There's definitely something hinky going on with tgl since kms_big_fb
is also failing atm in ci. But dunno if that's related or not.

That seems to get triggered by kms_psr2_sf followed by kms_big_fb. I could repro
this only (consistently) on TGL/A0 (all TGL shards are like
this) either running kms_psr2_sf/plane-move-sf-dmg-area-1 or
kms_psr2_sf/overlay-primary-update-sf-dmg-area-4 followed by
kms_big_fb/x-tiled-64bpp-rotate-180 .

The same doesn't happen on TGL/B0 with the same panel as used by by TGL shards,
though PSR got disabled on B0 due to some PSR RFB error.

Since this problem seems to happen consistently on A0, affecting later tests I suggest
blacklisting kms_psr2_sf at least on those machines, until the problem is root
caused, or at least to see how the kms_big_fb results change.

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--
Ville Syrjälä
Intel

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