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

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Date:   Tue, 23 May 2023 13:29:45 -0700
From:   Kees Cook <kees@...nel.org>
To:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Kees Cook <keescook@...omium.org>,
        "Martin K. Petersen" <martin.petersen@...cle.com>
CC:     "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        Dick Kennedy <dick.kennedy@...adcom.com>,
        James Smart <james.smart@...adcom.com>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH 1/2][next] scsi: lpfc: Replace one-element array with flexible-array member

On May 23, 2023 12:46:54 PM PDT, "Gustavo A. R. Silva" <gustavo@...eddedor.com> wrote:
>
>
>On 5/23/23 11:31, Kees Cook wrote:
>> On Mon, May 22, 2023 at 06:02:21PM -0400, Martin K. Petersen wrote:
>>> 
>>> Gustavo,
>>> 
>>>> One-element arrays are deprecated, and we are replacing them with flexible
>>>> array members instead. So, replace one-element arrays with flexible-array
>>>> members in a couple of structures, and refactor the rest of the code,
>>>> accordingly.
>>>> 
>>>> 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].
>>>> 
>>>> This results in no differences in binary output.
>>> 
>>> Applied to 6.5/scsi-staging, thanks!
>> 
>> Martin, I think this patch is not right -- can you drop this from
>> staging for the moment?
>
>Martin just took patch 1/2, which is correct:
>
>https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git/commit/?h=6.5/scsi-staging&id=e90644b0ce2d700a65579ac74ff594414e8ba30f

Oops, yes, I thought both got pulled. 1/2 is fine. :)

-Kees


-- 
Kees Cook