linux-kernel - Re: [PATCH v3 1/3] kasan: switch kunit tests to console tracepoints

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Date:   Tue, 12 Dec 2023 00:37:31 +0100
From:   Andrey Konovalov <andreyknvl@...il.com>
To:     Paul Heidekrüger <paul.heidekrueger@....de>
Cc:     Marco Elver <elver@...gle.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Peter Collingbourne <pcc@...gle.com>,
        andrey.konovalov@...ux.dev,
        Andrew Morton <akpm@...ux-foundation.org>,
        Alexander Potapenko <glider@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Andrey Ryabinin <ryabinin.a.a@...il.com>,
        kasan-dev@...glegroups.com, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org,
        Andrey Konovalov <andreyknvl@...gle.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        linux-trace-kernel@...r.kernel.org,
        Nick Desaulniers <ndesaulniers@...gle.com>
Subject: Re: [PATCH v3 1/3] kasan: switch kunit tests to console tracepoints

On Tue, Dec 12, 2023 at 12:35 AM Paul Heidekrüger
<paul.heidekrueger@....de> wrote:
>
> Using CONFIG_FTRACE=y instead of CONFIG_TRACEPOINTS=y produces the same error
> for me.
>
> So
>
>         CONFIG_KUNIT=y
>         CONFIG_KUNIT_ALL_TESTS=n
>         CONFIG_FTRACE=y
>         CONFIG_KASAN=y
>         CONFIG_KASAN_GENERIC=y
>         CONFIG_KASAN_KUNIT_TEST=y
>
> produces
>
>         ➜   ./tools/testing/kunit/kunit.py run --kunitconfig=mm/kasan/.kunitconfig --arch=arm64
>         Configuring KUnit Kernel ...
>         Regenerating .config ...
>         Populating config with:
>         $ make ARCH=arm64 O=.kunit olddefconfig CC=clang
>         ERROR:root:Not all Kconfig options selected in kunitconfig were in the generated .config.
>         This is probably due to unsatisfied dependencies.
>         Missing: CONFIG_KASAN_KUNIT_TEST=y
>
> By that error message, CONFIG_FTRACE appears to be present in the generated
> config, but CONFIG_KASAN_KUNIT_TEST still isn't. Presumably,
> CONFIG_KASAN_KUNIT_TEST is missing because of an unsatisfied dependency, which
> must be CONFIG_TRACEPOINTS, unless I'm missing something ...
>
> If I just generate an arm64 defconfig and select CONFIG_FTRACE=y,
> CONFIG_TRACEPOINTS=y shows up in my .config. So, maybe this is kunit.py-related
> then?
>
> Andrey, you said that the tests have been working for you; are you running them
> with kunit.py?

No, I just run the kernel built with a config file that I put together
based on defconfig.