From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754101AbaCNK7J (ORCPT ); Fri, 14 Mar 2014 06:59:09 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:42133 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753166AbaCNK7I (ORCPT ); Fri, 14 Mar 2014 06:59:08 -0400 Date: Fri, 14 Mar 2014 03:58:54 -0700 From: Christoph Hellwig To: Hannes Reinecke Cc: Christoph Hellwig , Mike Snitzer , Jeff Moyer , Jens Axboe , Shaohua Li , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH 1/1] block: rework flush sequencing for blk-mq Message-ID: <20140314105854.GA4077@infradead.org> References: <20140130132630.GB6031@infradead.org> <20140308155240.GA32297@infradead.org> <531B74B6.4070004@suse.de> <20140312102849.GA26509@infradead.org> <20140313161347.GA6598@redhat.com> <20140314092519.GA10139@infradead.org> <20140314093458.GA19451@infradead.org> <5322D177.8050408@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5322D177.8050408@suse.de> User-Agent: Mutt/1.5.21 (2010-09-15) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Mar 14, 2014 at 10:52:55AM +0100, Hannes Reinecke wrote: > No, I haven't. This issue is only exhibited if you try to run > multipath on a non-SCSI device (in this case it was cciss). > But then that project got abandoned, and there never was a machine > with a multipathed cciss controller. We still shouldn't be able to easily crash the kernel because someone configured the wrong device. And with scsi-mq that wrong devices case might become a lot more common..