From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1751908AbdHJJcU (ORCPT <rfc822;w@1wt.eu>);
        Thu, 10 Aug 2017 05:32:20 -0400
Received: from verein.lst.de ([213.95.11.211]:58978 "EHLO newverein.lst.de"
        rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
        id S1751456AbdHJJcT (ORCPT <rfc822;linux-kernel@vger.kernel.org>);
        Thu, 10 Aug 2017 05:32:19 -0400
Date: Thu, 10 Aug 2017 11:32:17 +0200
From: Christoph Hellwig <hch@lst.de>
To: Benjamin Block <bblock@linux.vnet.ibm.com>
Cc: "James E . J . Bottomley" <jejb@linux.vnet.ibm.com>,
        "Martin K . Petersen" <martin.petersen@oracle.com>,
        Jens Axboe <axboe@kernel.dk>, linux-block@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org,
        Johannes Thumshirn <jthumshirn@suse.de>,
        Christoph Hellwig <hch@lst.de>,
        Steffen Maier <maier@linux.vnet.ibm.com>, open-iscsi@googlegroups.com
Subject: Re: [RFC PATCH 1/6] bsg: fix kernel panic resulting from missing
        allocation of a reply-buffer
Message-ID: <20170810093217.GL24539@lst.de>
References: <cover.1502120928.git.bblock@linux.vnet.ibm.com> <9e67ce3fc2f3cd42e9e05b2753b00d6676f46ee1.1502120928.git.bblock@linux.vnet.ibm.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <9e67ce3fc2f3cd42e9e05b2753b00d6676f46ee1.1502120928.git.bblock@linux.vnet.ibm.com>
User-Agent: Mutt/1.5.17 (2007-11-01)
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

We can't use an on-stack buffer for the sense data, as drivers will
dma to it.  So we should reuse the SCSI init_rq_fn() for the BSG
queues and/or implement the same scheme.