linux-kernel - Re: [PATCH v2] scsi: sg: fix SG_DXFER_FROM

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Message-ID: <yq1a849l5h4.fsf@oracle.com>
Date:   Wed, 12 Jul 2017 17:17:59 -0400
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     Johannes Thumshirn <jthumshirn@...e.de>
Cc:     "Martin K . Petersen" <martin.petersen@...cle.com>,
        Linux SCSI Mailinglist <linux-scsi@...r.kernel.org>,
        Linux Kernel Mailinglist <linux-kernel@...r.kernel.org>,
        Chris Clayton <chris2553@...glemail.com>,
        Douglas Gilbert <dgilbert@...erlog.com>
Subject: Re: [PATCH v2] scsi: sg: fix SG_DXFER_FROM_DEV transfers


Johannes,

> SG_DXFER_FROM_DEV transfers do not necessarily have a dxferp as we set
> it to NULL for the old sg_io read/write interface, but must have a
> length bigger than 0. This fixes a regression introduced by commit
> 28676d869bbb ("scsi: sg: check for valid direction before starting the
> request")

Applied to 4.13/scsi-fixes. Thank you!

-- 
Martin K. Petersen	Oracle Linux Engineering