linux-kernel - Re: [PATCH v2 1/2] scsi: scsi

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Message-ID: <62249975-7bcc-f23d-808e-8a0da1131570@linaro.org>
Date:   Wed, 3 Nov 2021 10:19:21 -0700
From:   Tadeusz Struk <tadeusz.struk@...aro.org>
To:     Christoph Hellwig <hch@....de>
Cc:     Bart Van Assche <bvanassche@....org>, linux-scsi@...r.kernel.org,
        "James E . J . Bottomley" <jejb@...ux.ibm.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Douglas Gilbert <dgilbert@...erlog.com>
Subject: Re: [PATCH v2 1/2] scsi: scsi_ioctl: Validate command size

On 11/3/21 10:09, Christoph Hellwig wrote:
>> +	if (hdr->cmd_len < 6)
>> +		return -EMSGSIZE;
> The checks looks good, but I'd be tempted to place it next to the
> other check on hdr->cmd_len in the caller.

Do you mean in sg_io()?
I don't mind changing it, but putting the check here in
scsi_fill_sghdr_rq() was suggested by Douglas (cc'ed now).

-- 
Thanks,
Tadeusz