linux-hardening - Re: [PATCH] intersil: Use struct

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Message-ID: <202111181224.088CD29@keescook>
Date:   Thu, 18 Nov 2021 12:25:19 -0800
From:   Kees Cook <keescook@...omium.org>
To:     Johannes Berg <johannes@...solutions.net>
Cc:     Jouni Malinen <j@...fi>, Kalle Valo <kvalo@...eaurora.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Lee Jones <lee.jones@...aro.org>,
        Allen Pais <allen.lkml@...il.com>,
        Romain Perier <romain.perier@...il.com>,
        Arnd Bergmann <arnd@...db.de>,
        Vaibhav Gupta <vaibhavgupta40@...il.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org,
        netdev@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH] intersil: Use struct_group() for memcpy() region

On Thu, Nov 18, 2021 at 08:46:11PM +0100, Johannes Berg wrote:
> On Thu, 2021-11-18 at 10:41 -0800, Kees Cook wrote:
> > 
> >  	/* 802.11 */
> > -	__le16 frame_control; /* parts not used */
> > -	__le16 duration_id;
> > -	u8 addr1[ETH_ALEN];
> > -	u8 addr2[ETH_ALEN]; /* filled by firmware */
> > -	u8 addr3[ETH_ALEN];
> > -	__le16 seq_ctrl; /* filled by firmware */
> > +	struct_group(frame,
> 
> Arguably, that should be 'header' rather than 'frame' :)

Works for me. :) I will rename it. Thanks!

-- 
Kees Cook