linux-hardening - Re: [PATCH 1/2][next] wifi: brcmfmac: Replace one-element array with flexible-array member

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Message-ID: <166911203827.12832.4781552690392721679.kvalo@kernel.org>
Date:   Tue, 22 Nov 2022 10:14:01 +0000 (UTC)
From:   Kalle Valo <kvalo@...nel.org>
To:     "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc:     Arend van Spriel <aspriel@...il.com>,
        Franky Lin <franky.lin@...adcom.com>,
        Hante Meuleman <hante.meuleman@...adcom.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        brcm80211-dev-list.pdl@...adcom.com,
        SHA-cyfmac-dev-list@...ineon.com, netdev@...r.kernel.org,
        linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH 1/2][next] wifi: brcmfmac: Replace one-element array with
 flexible-array member

"Gustavo A. R. Silva" <gustavoars@...nel.org> wrote:

> One-element arrays are deprecated, and we are replacing them with flexible
> array members instead. So, replace one-element array with flexible-array
> member in struct brcmf_gscan_config.
> 
> Important to mention is that doing a build before/after this patch results
> in no binary output differences.
> 
> This helps with the ongoing efforts to tighten the FORTIFY_SOURCE routines
> on memcpy() and help us make progress towards globally enabling
> -fstrict-flex-arrays=3 [1].
> 
> Link: https://github.com/KSPP/linux/issues/79
> Link: https://github.com/KSPP/linux/issues/241
> Link: https://gcc.gnu.org/pipermail/gcc-patches/2022-October/602902.html [1]
> Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
> Reviewed-by: Kees Cook <keescook@...omium.org>

2 patches applied to wireless-next.git, thanks.

61b0853d0314 wifi: brcmfmac: Replace one-element array with flexible-array member
f0e0897b4c7e wifi: brcmfmac: Use struct_size() and array_size() in code ralated to struct brcmf_gscan_config

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/7694550aa9a2753a73a687f61af9441c8cf52fd7.1668466470.git.gustavoars@kernel.org/

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