netdev - Re: [PATCH v2 56/63] RDMA/mlx5: Use struct_group() to zero struct mlx5_ib

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Message-ID: <202108200856.E0E8711CB@keescook>
Date:   Fri, 20 Aug 2021 08:56:29 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Jason Gunthorpe <jgg@...pe.ca>
Cc:     linux-kernel@...r.kernel.org, Leon Romanovsky <leon@...nel.org>,
        Doug Ledford <dledford@...hat.com>, linux-rdma@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andrew Morton <akpm@...ux-foundation.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,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH v2 56/63] RDMA/mlx5: Use struct_group() to zero struct
 mlx5_ib_mr

On Fri, Aug 20, 2021 at 09:34:00AM -0300, Jason Gunthorpe wrote:
> On Thu, Aug 19, 2021 at 11:14:37AM -0700, Kees Cook wrote:
> 
> > Which do you mean? When doing the conversions I tended to opt for
> > struct_group() since it provides more robust "intentionality". Strictly
> > speaking, the new memset helpers are doing field-spanning writes, but the
> > "clear to the end" pattern was so common it made sense to add the helpers,
> > as they're a bit less disruptive. It's totally up to you! :)
> 
> Well, of the patches you cc'd to me only this one used the struct
> group..

Understood. I've adjusted this for v3. Thanks!

-- 
Kees Cook