Re: [PATCH 2/3][next] scsi: smartpqi: Replace one-element arrays with flexible-array members

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On Wed, Sep 21, 2022 at 11:29:29PM -0500, Gustavo A. R. Silva 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 structures report_phys_lun_8byte_wwid_list and
> report_phys_lun_16byte_wwid_list.
> 
> This helps with the ongoing efforts to tighten the FORTIFY_SOURCE routines
> on memcpy().
> 
> Link: https://github.com/KSPP/linux/issues/79
> Link: https://github.com/KSPP/linux/issues/204
> Signed-off-by: Gustavo A. R. Silva <gustavoars@xxxxxxxxxx>

Are there any binary differences after this patch? I assume not, so:

Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>


> ---
>  drivers/scsi/smartpqi/smartpqi.h | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/scsi/smartpqi/smartpqi.h b/drivers/scsi/smartpqi/smartpqi.h
> index d1756c9d1112..b31b42530674 100644
> --- a/drivers/scsi/smartpqi/smartpqi.h
> +++ b/drivers/scsi/smartpqi/smartpqi.h
> @@ -982,12 +982,12 @@ struct report_phys_lun_16byte_wwid {
>  
>  struct report_phys_lun_8byte_wwid_list {
>  	struct report_lun_header header;
> -	struct report_phys_lun_8byte_wwid lun_entries[1];
> +	struct report_phys_lun_8byte_wwid lun_entries[];
>  };
>  
>  struct report_phys_lun_16byte_wwid_list {
>  	struct report_lun_header header;
> -	struct report_phys_lun_16byte_wwid lun_entries[1];
> +	struct report_phys_lun_16byte_wwid lun_entries[];
>  };
>  
>  struct raid_map_disk_data {
> -- 
> 2.34.1
> 

-- 
Kees Cook



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