linux-kernel - Re: [PATCH] scsi: sg: only check for dxfer

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Message-ID: <yq1mv7qvy8j.fsf@oracle.com>
Date:   Thu, 27 Jul 2017 08:51:56 -0400
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     Johannes Thumshirn <jthumshirn@...e.de>
Cc:     "Martin K . Petersen" <martin.petersen@...cle.com>,
        Jason L Tibbitts III <tibbs@...h.uh.edu>,
        Doug Gilbert <dgilbert@...erlog.com>,
        Linux Kernel Mailinglist <linux-kernel@...r.kernel.org>,
        Linux SCSI Mailinglist <linux-scsi@...r.kernel.org>,
        Hannes Reinecke <hare@...e.de>, stable@...r.kernel.org
Subject: Re: [PATCH] scsi: sg: only check for dxfer_len greater than 256M


Johannes,

> Don't make any assumptions on the sg_io_hdr_t::dxfer_direction or the
> sg_io_hdr_t::dxferp in order to determine if it is a valid
> request. The only way we can check for bad requests is by checking if
> the length exceeds 256M.

Applied to 4.13/scsi-fixes. Thanks!

-- 
Martin K. Petersen	Oracle Linux Engineering