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From:   Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Date:   Thu, 6 Apr 2023 15:44:54 +0200
Message-ID: <CANiq72=Awa4B1qL+Zdkuj1-EX+Tv=fK=pRM_DMdYCDmByEVOHg@mail.gmail.com>
Subject: Re: [PATCH 6/9] fortify: Split reporting and avoid passing string pointer
To:     Kees Cook <keescook@chromium.org>
Cc:     linux-hardening@vger.kernel.org, Andy Shevchenko <andy@kernel.org>,
        Cezary Rojewski <cezary.rojewski@intel.com>,
        Puyou Lu <puyou.lu@gmail.com>, Mark Brown <broonie@kernel.org>,
        Josh Poimboeuf <jpoimboe@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Brendan Higgins <brendan.higgins@linux.dev>,
        David Gow <davidgow@google.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Nathan Chancellor <nathan@kernel.org>,
        Alexander Potapenko <glider@google.com>,
        Zhaoyang Huang <zhaoyang.huang@unisoc.com>,
        Randy Dunlap <rdunlap@infradead.org>,
        Geert Uytterhoeven <geert+renesas@glider.be>,
        Miguel Ojeda <ojeda@kernel.org>,
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        Liam Howlett <liam.howlett@oracle.com>,
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        Andrey Konovalov <andreyknvl@gmail.com>,
        Linus Walleij <linus.walleij@linaro.org>,
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        =?UTF-8?B?Sm9zw6kgRXhww7NzaXRv?= <jose.exposito89@gmail.com>,
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On Thu, Apr 6, 2023 at 2:02=E2=80=AFAM Kees Cook <keescook@chromium.org> wr=
ote:
>
> +void __fortify_report(u8 reason);
> +void __fortify_panic(u8 reason) __cold __noreturn;

(snip)

> +void __fortify_report(u8 reason)

(snip)

> +void __fortify_panic(const u8 reason)

I am curious: for some reason (no pun intended :) the `reason`s above
are not `const` except this one, but then in a later patch they become
`const` (including the declarations).

So perhaps make everything `const` when they are introduced? Or is
there some other reason? (e.g. I saw one patch that moved a function,
so there it seemed to make sense to keep things as they are to make
the copy 1:1).

Cheers,
Miguel