linux-hardening - Re: [PATCH] lib: overflow: Always build 64-bit test cases

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Date:   Mon, 16 May 2022 16:01:57 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     Nathan Chancellor <nathan@...nel.org>,
        kernel test robot <lkp@...el.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Vitor Massaru Iha <vitor@...saru.org>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Daniel Latypov <dlatypov@...gle.com>,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH] lib: overflow: Always build 64-bit test cases

On Mon, May 16, 2022 at 02:35:45PM -0700, Nick Desaulniers wrote:
> On Wed, May 11, 2022 at 10:45 AM Kees Cook <keescook@...omium.org> wrote:
> >
> > There shouldn't be a reason to not build the 64-bit test cases on 32-bit
> > systems; the types exist there too. Remove the #ifdefs.
> 
> I think this is breaking 32b ARM for clang-13 and older?
> https://github.com/ClangBuiltLinux/linux/issues/1636

Ah-ha, that's the combo I hadn't found. Thank you!

-- 
Kees Cook