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Message-ID: <CACRpkdaVauiB0M3PNjGgcAj2Cw1gZ=NenkOuh=PKT=8uEYc5rA@mail.gmail.com>
Date:   Wed, 27 Sep 2023 10:59:52 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Kees Cook <keescook@...omium.org>
Cc:     Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        linux-gpio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Tom Rix <trix@...hat.com>, linux-kernel@...r.kernel.org,
        llvm@...ts.linux.dev, linux-hardening@...r.kernel.org
Subject: Re: [PATCH] pinctrl: uniphier: Annotate struct uniphier_pinctrl_reg_region
 with __counted_by

On Fri, Sep 22, 2023 at 7:50 PM Kees Cook <keescook@...omium.org> wrote:

> Prepare for the coming implementation by GCC and Clang of the __counted_by
> attribute. Flexible array members annotated with __counted_by can have
> their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS
> (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
> functions).
>
> As found with Coccinelle[1], add __counted_by for struct uniphier_pinctrl_reg_region.
>
> [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
>
> Cc: Linus Walleij <linus.walleij@...aro.org>
> Cc: Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
> Cc: Masami Hiramatsu <mhiramat@...nel.org>
> Cc: linux-gpio@...r.kernel.org
> Cc: linux-arm-kernel@...ts.infradead.org
> Signed-off-by: Kees Cook <keescook@...omium.org>

Excellent!
Patch applied.

Yours,
Linus Walleij

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