From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e06smtp11.uk.ibm.com (e06smtp11.uk.ibm.com [195.75.94.107]) (using TLSv1 with cipher CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 033A11A072A for ; Tue, 24 Nov 2015 03:24:39 +1100 (AEDT) Received: from localhost by e06smtp11.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 23 Nov 2015 16:24:36 -0000 Received: from b06cxnps3074.portsmouth.uk.ibm.com (d06relay09.portsmouth.uk.ibm.com [9.149.109.194]) by d06dlp01.portsmouth.uk.ibm.com (Postfix) with ESMTP id 01F2717D805D for ; Mon, 23 Nov 2015 16:24:59 +0000 (GMT) Received: from d06av07.portsmouth.uk.ibm.com (d06av07.portsmouth.uk.ibm.com [9.149.37.248]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id tANGOYik1376552 for ; Mon, 23 Nov 2015 16:24:34 GMT Received: from d06av07.portsmouth.uk.ibm.com (localhost [127.0.0.1]) by d06av07.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id tANGOXvJ006178 for ; Mon, 23 Nov 2015 09:24:34 -0700 Subject: Re: kernel BUG at drivers/scsi/scsi_lib.c:1096! To: Ming Lei References: <1447838334.1564.2.camel@ellerman.id.au> <1447855399.3974.24.camel@redhat.com> <1447894964.15206.0.camel@ellerman.id.au> <20151119082325.GA11419@infradead.org> <1448021448.14769.7.camel@ellerman.id.au> <565055C6.5040801@linux.vnet.ibm.com> <20151122005635.1b9ffbe1@tom-T450> <1448234410.8209.3.camel@redhat.com> <56531B3F.60503@linux.vnet.ibm.com> <20151123151330.GA10990@dhcppc13.redhat.com> <56532EC7.3060000@linux.vnet.ibm.com> Cc: Pratyush Anand , Mark Salter , linux-block@vger.kernel.org, Linux SCSI List , "James E. J. Bottomley" , Linux Kernel Mailing List , Christoph Hellwig , brking , linuxppc-dev@lists.ozlabs.org From: Laurent Dufour Message-ID: <56533DC1.5070505@linux.vnet.ibm.com> Date: Mon, 23 Nov 2015 17:24:33 +0100 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On 23/11/2015 16:27, Ming Lei wrote: > On Mon, Nov 23, 2015 at 11:20 PM, Laurent Dufour > wrote: >>> >>> Reverting above commit on top if 4.4-rc1 seems to fix the problem for me. >> >> That's what I mentioned earlier ;) >> >> Now Ming send an additional patch with seems to fix the bug introduced >> through the commit bdced438acd8. When testing with this new patch I >> can't get the panic anymore, but Mark reported he is still hitting it. > > Laurent, thanks for your test on the 1st patch, and looks there are at > least two problems, and my 2nd patch sent just now should address > Mark's issue which is caused by bdced438acd83a. > > Once the 2nd one is tested OK, I will send out the two together. FWIW, I applied the 2nd patch, and my system is still running like a charm. Cheers, Laurent.