Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752964AbbKWGzw (ORCPT ); Mon, 23 Nov 2015 01:55:52 -0500 Received: from mx2.suse.de ([195.135.220.15]:57556 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751417AbbKWGzu (ORCPT ); Mon, 23 Nov 2015 01:55:50 -0500 Subject: Re: kernel BUG at drivers/scsi/scsi_lib.c:1096! To: emilne@redhat.com 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> <564DEC41.5010600@suse.de> <1448030316.4067.18.camel@localhost.localdomain> <564F3453.9040603@suse.de> <1448033323.4067.24.camel@localhost.localdomain> Cc: Christoph Hellwig , Michael Ellerman , Mark Salter , "James E. J. Bottomley" , brking , linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-block@vger.kernel.org From: Hannes Reinecke Message-ID: <5652B870.70302@suse.de> Date: Mon, 23 Nov 2015 07:55:44 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 MIME-Version: 1.0 In-Reply-To: <1448033323.4067.24.camel@localhost.localdomain> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1204 Lines: 35 On 11/20/2015 04:28 PM, Ewan Milne wrote: > On Fri, 2015-11-20 at 15:55 +0100, Hannes Reinecke wrote: >> Can't we have a joint effort here? >> I've been spending a _LOT_ of time trying to debug things here, but >> none of the ideas I've come up with have been able to fix anything. > > Yes. I'm not the one primarily looking at it, and we don't have a > reproducer in-house. We just have the one dump right now. > Oh, I got plenty of them :-( >> >> I'm almost tempted to increase the count from scsi_alloc_sgtable() >> by one and be done with ... >> > > That might not fix it if it is a problem with the merge code, though. > Of course not. But it'll be a band-aid to keep the customer happy. Cheers, Hannes -- Dr. Hannes Reinecke zSeries & Storage hare@suse.de +49 911 74053 688 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton HRB 21284 (AG Nürnberg) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/