linux-kernel - Re: [PATCH] leds: mt6360: Annotate struct mt6360_priv with __counted

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Message-ID: <c2664bc3-d932-8340-b0f6-8fb1f1604464@collabora.com>
Date:   Mon, 18 Sep 2023 10:27:45 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Kees Cook <keescook@...omium.org>, Pavel Machek <pavel@....cz>
Cc:     Lee Jones <lee@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Gene Chen <gene_chen@...htek.com>,
        Jacek Anaszewski <jacek.anaszewski@...il.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-leds@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...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] leds: mt6360: Annotate struct mt6360_priv with
 __counted_by

Il 15/09/23 22:10, Kees Cook ha scritto:
> 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 mt6360_priv.
> 
> [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
> 
> Cc: Pavel Machek <pavel@....cz>
> Cc: Lee Jones <lee@...nel.org>
> Cc: Matthias Brugger <matthias.bgg@...il.com>
> Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
> Cc: Gene Chen <gene_chen@...htek.com>
> Cc: Jacek Anaszewski <jacek.anaszewski@...il.com>
> Cc: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> Cc: linux-leds@...r.kernel.org
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-mediatek@...ts.infradead.org
> Signed-off-by: Kees Cook <keescook@...omium.org>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>