linux-hardening - Re: [PATCH][next] cifs: cifspdu.h: Replace one-element array with flexible-array member

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Date:   Fri, 26 Mar 2021 10:13:16 -0500
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     Aurélien Aptel <aaptel@...e.com>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Steve French <sfrench@...ba.org>
Cc:     linux-cifs@...r.kernel.org, samba-technical@...ts.samba.org,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH][next] cifs: cifspdu.h: Replace one-element array with
 flexible-array member



On 3/26/21 10:54, Aurélien Aptel wrote:
> "Gustavo A. R. Silva" <gustavoars@...nel.org> writes:
>> 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].
> 
> I've checked the usages of the struct, looks OK (we don't allocate it
> directly, we use memory from the small/big buff pools).

Awesome. :)

> Reviewed-by: Aurelien Aptel <aaptel@...e.com>

Thank you, Aurelien.
--
Gustavo