linux-hardening - Re: [PATCH 2/2][next] scsi: hptiop: Use struct_size() helper in code related to struct hpt_iop_request_scsi

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Message-ID: <202209232305.60356F5EDF@keescook>
Date:   Fri, 23 Sep 2022 23:06:19 -0700
From:   Kees Cook <keescook@...omium.org>
To:     "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc:     HighPoint Linux Team <linux@...hpoint-tech.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH 2/2][next] scsi: hptiop: Use struct_size() helper in code
 related to struct hpt_iop_request_scsi_command

On Thu, Sep 22, 2022 at 11:55:33AM -0500, Gustavo A. R. Silva wrote:
> Prefer struct_size() over open-coded versions of idiom:
> 
> sizeof(struct-with-flex-array) + sizeof(typeof-flex-array-elements) * count
> 
> where count is the max number of items the flexible array is supposed to
> contain.
> 
> Link: https://github.com/KSPP/linux/issues/160
> Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>

Looks correct; thanks!

Reviewed-by: Kees Cook <keescook@...omium.org>

-- 
Kees Cook