linux-kernel - Re: [PATCH 0/8] scsi: aacraid: Replace one-element arrays with flexible-array members

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Date:   Wed, 9 Mar 2022 22:03:47 -0600
From:   "Gustavo A. R. Silva" <gustavoars@...nel.org>
To:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Adaptec OEM Raid Solutions <aacraid@...rosemi.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH 0/8] scsi: aacraid: Replace one-element arrays with
 flexible-array members

Hi all,

Friendly ping: who can review or comment on this series, please?

Thanks
--
Gustavo

On Tue, Feb 22, 2022 at 01:28:12AM -0600, Gustavo A. R. Silva wrote:
> This series aims to replace one-element arrays with flexible-array
> members in multiple structures in drivers/scsi/aacraid/aacraid.h.
> 
> 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].
> 
> This helps with the ongoing efforts to globally enable -Warray-bounds
> and get us closer to being able to tighten the FORTIFY_SOURCE routines
> on memcpy().
> 
> These issues were found with the help of Coccinelle and audited and fixed,
> manually.
> 
> [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/79
> 
> Gustavo A. R. Silva (8):
>   scsi: aacraid: Replace one-element array with flexible-array member
>   scsi: aacraid: Replace one-element array with flexible-array member in
>     struct sgmap
>   scsi: aacraid: Replace one-element array with flexible-array member in
>     struct user_sgmap
>   scsi: aacraid: Replace one-element array with flexible-array member in
>     struct sgmap64
>   scsi: aacraid: Replace one-element array with flexible-array member in
>     struct user_sgmap64
>   scsi: aacraid: Replace one-element array with flexible-array member in
>     struct sgmapraw
>   scsi: aacraid: Replace one-element array with flexible-array member in
>     struct user_sgmapraw
>   scsi: aacraid: Replace one-element array with flexible-array member in
>     struct aac_aifcmd
> 
>  drivers/scsi/aacraid/aachba.c   | 76 +++++++++++----------------------
>  drivers/scsi/aacraid/aacraid.h  | 16 +++----
>  drivers/scsi/aacraid/commctrl.c |  5 +--
>  drivers/scsi/aacraid/comminit.c |  3 +-
>  4 files changed, 37 insertions(+), 63 deletions(-)
> 
> -- 
> 2.27.0
>