linux-kernel - Re: [PATCH 49/64] cm4000_cs: Use struct_group() to zero struct cm4000

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Message-ID: <YQDvxAofJlI1JoGZ@kroah.com>
Date:   Wed, 28 Jul 2021 07:48:52 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Kees Cook <keescook@...omium.org>
Cc:     linux-hardening@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Keith Packard <keithpac@...zon.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org,
        netdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-staging@...ts.linux.dev, linux-block@...r.kernel.org,
        linux-kbuild@...r.kernel.org, clang-built-linux@...glegroups.com
Subject: Re: [PATCH 49/64] cm4000_cs: Use struct_group() to zero struct
 cm4000_dev region

On Tue, Jul 27, 2021 at 01:58:40PM -0700, Kees Cook wrote:
> In preparation for FORTIFY_SOURCE performing compile-time and run-time
> field bounds checking for memset(), avoid intentionally writing across
> neighboring fields.
> 
> Add struct_group() to mark region of struct cm4000_dev that should be
> initialized to zero.
> 
> Signed-off-by: Kees Cook <keescook@...omium.org>
> ---
>  drivers/char/pcmcia/cm4000_cs.c | 9 ++++-----
>  1 file changed, 4 insertions(+), 5 deletions(-)

Acked-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>