linux-kernel - Re: [v2] wifi: p54: Replace zero-length array of trailing structs with flex-array

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Message-ID: <166911223826.12832.1582733446998520230.kvalo@kernel.org>
Date:   Tue, 22 Nov 2022 10:17:21 +0000 (UTC)
From:   Kalle Valo <kvalo@...nel.org>
To:     Kees Cook <keescook@...omium.org>
Cc:     Christian Lamparter <chunkeey@...glemail.com>,
        Kees Cook <keescook@...omium.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [v2] wifi: p54: Replace zero-length array of trailing structs
 with flex-array

Kees Cook <keescook@...omium.org> wrote:

> Zero-length arrays are deprecated[1] and are being replaced with
> flexible array members in support of the ongoing efforts to tighten the
> FORTIFY_SOURCE routines on memcpy(), correctly instrument array indexing
> with UBSAN_BOUNDS, and to globally enable -fstrict-flex-arrays=3.
> 
> Replace zero-length array with flexible-array member.
> 
> This results in no differences in binary output (most especially because
> struct pda_antenna_gain is unused). The struct is kept for future
> reference.
> 
> [1] https://github.com/KSPP/linux/issues/78
> 
> Cc: Christian Lamparter <chunkeey@...glemail.com>
> Cc: Kalle Valo <kvalo@...nel.org>
> Cc: "David S. Miller" <davem@...emloft.net>
> Cc: Eric Dumazet <edumazet@...gle.com>
> Cc: Jakub Kicinski <kuba@...nel.org>
> Cc: Paolo Abeni <pabeni@...hat.com>
> Cc: "Gustavo A. R. Silva" <gustavoars@...nel.org>
> Cc: linux-wireless@...r.kernel.org
> Cc: netdev@...r.kernel.org
> Signed-off-by: Kees Cook <keescook@...omium.org>
> Acked-by: Christian Lamparter <chunkeey@...il.com>

Patch applied to wireless-next.git, thanks.

3b79d4bad3a0 wifi: p54: Replace zero-length array of trailing structs with flex-array

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20221118234240.gonna.369-kees@kernel.org/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches