linux-hardening - Re: [PATCH] binfmt_elf: Introduce KUnit test

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Message-ID: <20220228232131.4b9cee32@rorschach.local.home>
Date:   Mon, 28 Feb 2022 23:21:31 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Daniel Latypov <dlatypov@...gle.com>
Cc:     Kees Cook <keescook@...omium.org>,
        Eric Biederman <ebiederm@...ssion.com>,
        David Gow <davidgow@...gle.com>,
        Alexey Dobriyan <adobriyan@...il.com>,
        Magnus Groß <magnus.gross@...h-aachen.de>,
        kunit-dev@...glegroups.com, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH] binfmt_elf: Introduce KUnit test

On Mon, 28 Feb 2022 17:48:27 -0800
Daniel Latypov <dlatypov@...gle.com> wrote:

> He also prototyped a more intrusive alternative to using ftrace and
> kernel livepatch since they don't work on all arches, like UML.

Perhaps instead of working on a intrusive alternative on archs that do
not support live kernel patching, implement live kernel patching on
those archs! ;-)

It's probably the same amount of work. Well, really, you only need to
implement the klp_arch_set_pc(fregs, new_function); part.

-- Steve