linux-hardening - Re: [PATCH][next] iwlwifi: mei: Replace zero-length array with flexible-array member

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Date:   Fri, 1 Apr 2022 08:10:26 +0000
From:   "Coelho, Luciano" <luciano.coelho@...el.com>
To:     "kvalo@...nel.org" <kvalo@...nel.org>,
        "gustavoars@...nel.org" <gustavoars@...nel.org>
CC:     "keescook@...omium.org" <keescook@...omium.org>,
        "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "linux-hardening@...r.kernel.org" <linux-hardening@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH][next] iwlwifi: mei: Replace zero-length array with
 flexible-array member

On Mon, 2022-03-28 at 08:48 +0300, Kalle Valo wrote:
> "Gustavo A. R. Silva" <gustavoars@...nel.org> writes:
> 
> > On Wed, Feb 16, 2022 at 12:35:22PM -0800, Kees Cook wrote:
> > > On Wed, Feb 16, 2022 at 01:50:30PM -0600, Gustavo A. R. Silva wrote:
> > > > There is a regular need in the kernel to provide a way to declare
> > > > having a dynamically sized set of trailing elements in a structure.
> > > > Kernel code should always use “flexible array members”[1] for these
> > > > cases. The older style of one-element or zero-length arrays should
> > > > no longer be used[2].
> > > > 
> > > > [1] https://en.wikipedia.org/wiki/Flexible_array_member
> > > > [2]
> > > > https://www.kernel.org/doc/html/v5.16/process/deprecated.html#zero-length-and-one-element-arrays
> > > > 
> > > > Link: https://github.com/KSPP/linux/issues/78
> > > > Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
> > > 
> > > Reviewed-by: Kees Cook <keescook@...omium.org>
> > 
> > Hi all,
> > 
> > Friendly ping: can someone take this, please?
> > 
> > ...I can take this in my -next tree in the meantime.
> 
> I'll take this. Luca, ack?

Acked-by: Luca Coelho <luciano.coelho@...el.com>

--
Cheers,
Luca.