From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jens Axboe Subject: Re: SCSI regression in 4.11 Date: Tue, 28 Feb 2017 08:32:00 -0700 Message-ID: References: <20170227152955.1362aabb@xeon-e3> <20170227171931.30b9f619@xeon-e3> <20170228140812.GC20197@lst.de> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Return-path: Received: from mail-io0-f173.google.com ([209.85.223.173]:35154 "EHLO mail-io0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752402AbdB1Pc0 (ORCPT ); Tue, 28 Feb 2017 10:32:26 -0500 Received: by mail-io0-f173.google.com with SMTP id j18so11545628ioe.2 for ; Tue, 28 Feb 2017 07:32:02 -0800 (PST) In-Reply-To: <20170228140812.GC20197@lst.de> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Christoph Hellwig , Stephen Hemminger Cc: Linus Torvalds , "James E.J. Bottomley" , "Martin K. Petersen" , "K. Y. Srinivasan" , Dexuan Cui , Long Li , Josh Poulson , v-adsuho@microsoft.com, linux-scsi@vger.kernel.org On 02/28/2017 07:08 AM, Christoph Hellwig wrote: > On Mon, Feb 27, 2017 at 05:19:31PM -0800, Stephen Hemminger wrote: >> Fixes: ee5242360424 ("scsi: zero per-cmd driver data before each I/O") >> >> but that is already in linux-next. >> >> Noticed another place where memset(of the data was being done not the extra bits. >> Tried this, but didn't fix it either... > > Are you using blk-mq or the legacy request code? Stephen doesn't have MQ set in the config he posted, I'm assuming he didn't boot with scsi_mod.use_blk_mq=true. In a previous email, I asked if turning on MQ makes a difference. -- Jens Axboe