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References: <20220702040959.3232874-1-davidgow@google.com> <20220702040959.3232874-2-davidgow@google.com>
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From:   David Gow <davidgow@google.com>
Date:   Sat, 2 Jul 2022 12:45:11 +0800
Message-ID: <CABVgOSncQmFM50+B2rr31hFeiriF19MY7KTiUF4BddR0cTVXqA@mail.gmail.com>
Subject: Re: [PATCH v5 2/4] module: panic: Taint the kernel when selftest
 modules load
To:     Brendan Higgins <brendanhiggins@google.com>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Jonathan Corbet <corbet@lwn.net>,
        Andrew Morton <akpm@linux-foundation.org>,
        Kees Cook <keescook@chromium.org>,
        Shuah Khan <skhan@linuxfoundation.org>,
        Greg KH <gregkh@linuxfoundation.org>,
        Luis Chamberlain <mcgrof@kernel.org>,
        Masahiro Yamada <masahiroy@kernel.org>
Cc:     "Guilherme G . Piccoli" <gpiccoli@igalia.com>,
        Sebastian Reichel <sre@kernel.org>,
        John Ogness <john.ogness@linutronix.de>,
        Joe Fradley <joefradley@google.com>,
        Daniel Latypov <dlatypov@google.com>,
        KUnit Development <kunit-dev@googlegroups.com>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@vger.kernel.org>,
        "open list:DOCUMENTATION" <linux-doc@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Jani Nikula <jani.nikula@linux.intel.com>,
        Lucas De Marchi <lucas.demarchi@intel.com>,
        Aaron Tomlin <atomlin@redhat.com>,
        linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org,
        Michal Marek <michal.lkml@markovi.net>,
        Nick Desaulniers <ndesaulniers@google.com>,
        Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>
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On Sat, Jul 2, 2022 at 12:10 PM David Gow <davidgow@google.com> wrote:
>
> Taint the kernel with TAINT_TEST whenever a test module loads, by adding
> a new "TEST" module property, and setting it for all modules in the
> tools/testing directory. This property can also be set manually, for
> tests which live outside the tools/testing directory with:
> MODULE_INFO(test, "Y");
>
> Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
> Signed-off-by: David Gow <davidgow@google.com>
> ---

I forgot the changelogs here. The only significant difference from v4
is the change from pr_warn() to pr_warn_once().

Changes since v4:
https://lore.kernel.org/linux-kselftest/20220701084744.3002019-2-davidgow@google.com/
- Use pr_warn_once() to only log a warning the first time a module
taints the kernel with TAINT_TEST
  - Loading lots of test modules is a common usecase, and this would
otherwise spam the logs too much.
  - Thanks Luis.
- Remove a superfluous newline (Thanks Greg)
- Add Luis' Reviewed-by tag.

This patch was new in v4 of the series.

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