linux-kernel - Re: [PATCH v2] Use ctlr directly in rdac_failover

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Message-ID: <yq160grxblk.fsf@oracle.com>
Date:   Tue, 23 May 2017 21:55:19 -0400
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     Artem Savkov <asavkov@...hat.com>
Cc:     hare@...e.de, axboe@...com, hch@....de, martin.petersen@...cle.com,
        Bart Van Assche <Bart.VanAssche@...disk.com>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org
Subject: Re: [PATCH v2] Use ctlr directly in rdac_failover_get()


Artem,

> rdac_failover_get references struct rdac_controller as
> ctlr->ms_sdev->handler_data->ctlr for no apparent reason. Besides being
> inefficient this also introduces a null-pointer dereference as
> send_mode_select() sets ctlr->ms_sdev to NULL before calling
> rdac_failover_get():

Applied to 4.12/scsi-fixes. Thank you!

-- 
Martin K. Petersen	Oracle Linux Engineering