linux-kernel - Re: [PATCH] device

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Message-ID: <7cd80595-ca17-0474-5870-6d7c0429db7a@suse.de>
Date:   Mon, 12 Mar 2018 07:25:08 +0100
From:   Hannes Reinecke <hare@...e.de>
To:     Stephen Kitt <steve@....org>, hare@...e.com, axboe@...nel.dk,
        jejb@...ux.vnet.ibm.com, martin.petersen@...cle.com
Cc:     linux-scsi@...r.kernel.org, kernel-hardening@...ts.openwall.com,
        linux-kernel@...r.kernel.org, linux-block@...r.kernel.org
Subject: Re: [PATCH] device_handler: remove VLAs

On 03/09/2018 11:32 PM, Stephen Kitt wrote:
> In preparation to enabling -Wvla, remove VLAs and replace them with
> fixed-length arrays instead.
> 
> scsi_dh_{alua,emc,rdac} use variable-length array declarations to
> store command blocks, with the appropriate size as determined by
> COMMAND_SIZE. This patch replaces these with fixed-sized arrays using
> MAX_COMMAND_SIZE, so that the array size can be determined at compile
> time.
> 
> This was prompted by https://lkml.org/lkml/2018/3/7/621
> 
> Signed-off-by: Stephen Kitt <steve@....org>
> ---
>  drivers/scsi/device_handler/scsi_dh_alua.c | 8 ++++----
>  drivers/scsi/device_handler/scsi_dh_emc.c  | 2 +-
>  drivers/scsi/device_handler/scsi_dh_rdac.c | 2 +-
>  3 files changed, 6 insertions(+), 6 deletions(-)
> 
Reviewed-by: Hannes Reinecke <hare@...e.com>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		   Teamlead Storage & Networking
hare@...e.de			               +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
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