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From:   Daniel Latypov <dlatypov@google.com>
Date:   Wed, 10 Aug 2022 09:41:18 -0700
Message-ID: <CAGS_qxqqsLQ-aCfZHTJbYqb3e21hNSzobAmsZNN_QETXExwQ+A@mail.gmail.com>
Subject: Re: [PATCH v2 4/4] drm/format-helper: Add KUnit tests for drm_fb_xrgb8888_to_rgb565()
To:     =?UTF-8?B?Sm9zw6kgRXhww7NzaXRv?= <jose.exposito89@gmail.com>
Cc:     David Gow <davidgow@google.com>,
        Javier Martinez Canillas <javierm@redhat.com>,
        Thomas Zimmermann <tzimmermann@suse.de>,
        Maxime Ripard <mripard@kernel.org>,
        Daniel Vetter <daniel@ffwll.ch>,
        David Airlie <airlied@linux.ie>,
        maarten.lankhorst@linux.intel.com,
        Jani Nikula <jani.nikula@linux.intel.com>,
        =?UTF-8?B?TWHDrXJhIENhbmFs?= <maira.canal@usp.br>,
        Isabella Basso <isabbasso@riseup.net>, magalilemes00@gmail.com,
        tales.aparecida@gmail.com, dri-devel@lists.freedesktop.org,
        KUnit Development <kunit-dev@googlegroups.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On Sun, Jul 17, 2022 at 10:01 AM Jos=C3=A9 Exp=C3=B3sito
<jose.exposito89@gmail.com> wrote:
>
> Jos=C3=A9 Exp=C3=B3sito <jose.exposito89@gmail.com> wrote:
> > I already fixed the warning and added the reviewed by tags, however, I
> > noticed that rebasing the series on the latest drm-misc-next show this
> > error:
> > [...]
>
> Sorry for the extra email. I forgot to mention that the error is only
> present in UML. Running in other architectures works as expected.
> Tested on x86_64 and PowerPC.

Can you take a look at the raw output?

It would be .kunit/test.log (or replace .kunit with w/e --build_dir
you're using).
You could also run the test with --raw_output to have kunit.py print
that out instead.
We might want to compare the output on UML vs x86 and see what looks suspic=
ious.

These errors
  [ERROR] Test: xrgb8888_to_rgb332_test: missing subtest result line!
means that kunit.py can't parse the KTAP output.

It could be that the output is mangled for some reason.
I recall running into a UML-specific issue with output mangling on an
old kernel fork. I doubt it's related to this one, but it shows that
it's possible there could be something going on.

-Daniel