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Subject: Re: [PATCH] leds: mt6370: Annotate struct mt6370_priv with
 __counted_by
Content-Language: en-US
To:     Kees Cook <keescook@chromium.org>, Pavel Machek <pavel@ucw.cz>
Cc:     Lee Jones <lee@kernel.org>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Alice Chen <alice_chen@richtek.com>,
        Jacek Anaszewski <jacek.anaszewski@gmail.com>,
        ChiYuan Huang <cy_huang@richtek.com>,
        ChiaEn Wu <chiaen_wu@richtek.com>,
        kernel test robot <lkp@intel.com>,
        linux-leds@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-mediatek@lists.infradead.org,
        Nathan Chancellor <nathan@kernel.org>,
        Nick Desaulniers <ndesaulniers@google.com>,
        Tom Rix <trix@redhat.com>, linux-kernel@vger.kernel.org,
        llvm@lists.linux.dev, linux-hardening@vger.kernel.org
References: <20230915201051.never.429-kees@kernel.org>
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@collabora.com>
In-Reply-To: <20230915201051.never.429-kees@kernel.org>
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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 mt6370_priv.
> 
> [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
> 
> Cc: Pavel Machek <pavel@ucw.cz>
> Cc: Lee Jones <lee@kernel.org>
> Cc: Matthias Brugger <matthias.bgg@gmail.com>
> Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> Cc: Alice Chen <alice_chen@richtek.com>
> Cc: Jacek Anaszewski <jacek.anaszewski@gmail.com>
> Cc: ChiYuan Huang <cy_huang@richtek.com>
> Cc: ChiaEn Wu <chiaen_wu@richtek.com>
> Cc: kernel test robot <lkp@intel.com>
> Cc: linux-leds@vger.kernel.org
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linux-mediatek@lists.infradead.org
> Signed-off-by: Kees Cook <keescook@chromium.org>

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