Re: [igt-dev] ✗ Fi.CI.IGT: failure for lib/igt_fb: A few changes to fix test runs on ADL_P

["Saarinen, Jani" <jani.saarinen@intel.com>]

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

> -----Original Message-----
> From: igt-dev <igt-dev-bounces@lists.freedesktop.org> On Behalf Of Imre Deak
> Sent: tiistai 4. toukokuuta 2021 21.54
> To: Ville Syrjälä <ville.syrjala@linux.intel.com>
> 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:
> > On Tue, May 04, 2021 at 06:00:58PM +0300, Imre Deak wrote:
> > > On Fri, Apr 30, 2021 at 12:55:28AM +0000, Patchwork wrote:
> > > > == 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
> > > >   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:
> > > >
> > > > ### 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
> > > >    [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:
> > > 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.
> 
> > --
> > Ville Syrjälä
> > Intel
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