From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-by2nam01on0045.outbound.protection.outlook.com ([104.47.34.45]:60576 "EHLO NAM01-BY2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751038AbdBBTq6 (ORCPT ); Thu, 2 Feb 2017 14:46:58 -0500 From: Bart Van Assche To: "snitzer@redhat.com" CC: "hch@lst.de" , "linux-block@vger.kernel.org" , "axboe@fb.com" Subject: Re: split scsi passthrough fields out of struct request V2 Date: Thu, 2 Feb 2017 19:46:49 +0000 Message-ID: <1486064795.2816.14.camel@sandisk.com> References: <1485899692.3113.9.camel@sandisk.com> <2085a3e6-25fc-d104-35cb-38995d154fd2@kernel.dk> <1485910862.3113.12.camel@sandisk.com> <9198f024-9d55-3a28-9f77-ecbca42873b5@kernel.dk> <1485967586.2560.1.camel@sandisk.com> <7e963480-edf9-5687-25f3-83890373a26f@kernel.dk> <1485986472.2560.14.camel@sandisk.com> <1486056424.2816.4.camel@sandisk.com> <20170202183334.GB26910@redhat.com> <1486060991.2816.8.camel@sandisk.com> <20170202191330.GA27107@redhat.com> In-Reply-To: <20170202191330.GA27107@redhat.com> Content-Type: text/plain; charset="iso-8859-1" MIME-Version: 1.0 Sender: linux-block-owner@vger.kernel.org List-Id: linux-block@vger.kernel.org On Thu, 2017-02-02 at 14:13 -0500, Mike Snitzer wrote: > On Thu, Feb 02 2017 at 1:43pm -0500, Bart Van Assche wrote: > > On Thu, 2017-02-02 at 13:33 -0500, Mike Snitzer wrote: > > > I'll go back over hch's changes to see if I can spot anything. But i= s > > > this testing using dm_mod.use_bk_mq=3DY or are you testing old .reque= st_fn > > > dm-multipath? > >=20 > > The srp-test software tests multiple configurations: dm-mq on scsi-mq, = dm-sq > > on scsi-mq and dm-sq on scsi-sq. I have not yet checked which of these > > three configurations triggers the kernel crash. >=20 > OK, such info is important to provide for crashes like this. Please let > me know once you do. Hello Mike, Apparently it's the large I/O test (using dm-mq on scsi-mq) that triggers t= he crash: # ~bart/software/infiniband/srp-test/run_tests -r 10 [ ... ] Test /home/bart/software/infiniband/srp-test/tests/02-sq-on-mq succeeded Running test /home/bart/software/infiniband/srp-test/tests/03 ... Test large transfer sizes with cmd_sg_entries=3D255 removing /dev/mapper/mpatht:=A0[ CRASH ] The source code of the test I ran is available at https://github.com/bvanassche/srp-test. Bart.=