linux-kernel - Re: [PATCH] kbuild: Allow LTO to be selected with KASAN_HW

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Message-ID: <CAK7LNASjXiZJ3N6XsQ-5+d3fwNOkFmLLnbn3KLpf-xBGGDuqAw@mail.gmail.com>
Date:   Wed, 10 Mar 2021 02:12:07 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Kees Cook <keescook@...omium.org>
Cc:     Sami Tolvanen <samitolvanen@...gle.com>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nathan Chancellor <nathan@...nel.org>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Alistair Delva <adelva@...gle.com>
Subject: Re: [PATCH] kbuild: Allow LTO to be selected with KASAN_HW_TAGS

On Tue, Mar 9, 2021 at 6:39 AM Kees Cook <keescook@...omium.org> wrote:
>
> On Mon, Mar 08, 2021 at 10:46:56AM -0800, Sami Tolvanen wrote:
> > While LTO with KASAN is normally not useful, hardware tag-based KASAN
> > can be used also in production kernels with ARM64_MTE. Therefore, allow
> > KASAN_HW_TAGS to be selected together with HAS_LTO_CLANG.
> >
> > Reported-by: Alistair Delva <adelva@...gle.com>
> > Signed-off-by: Sami Tolvanen <samitolvanen@...gle.com>
>
> Reviewed-by: Kees Cook <keescook@...omium.org>
>
> --
> Kees Cook

Applied to linux-kbuild/fixes. Thanks.


-- 
Best Regards
Masahiro Yamada