From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755701Ab3KEWGb (ORCPT ); Tue, 5 Nov 2013 17:06:31 -0500 Received: from avon.wwwdotorg.org ([70.85.31.133]:52514 "EHLO avon.wwwdotorg.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755582Ab3KEWG3 (ORCPT ); Tue, 5 Nov 2013 17:06:29 -0500 Message-ID: <52796BE1.5010306@wwwdotorg.org> Date: Tue, 05 Nov 2013 15:06:25 -0700 From: Stephen Warren User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.1.0 MIME-Version: 1.0 To: Chris Mason , Olof Johansson CC: Jens Axboe , Tushar Behera , "linux-next@vger.kernel.org" , lkml , Kent Overstreet Subject: Re: Boot failure on Arndale with next-20131105 References: <52794823.7080503@kernel.dk> <20131105203308.3802.45122@localhost.localdomain> <20131105205623.3802.5166@localhost.localdomain> In-Reply-To: <20131105205623.3802.5166@localhost.localdomain> X-Enigmail-Version: 1.5.2 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/05/2013 01:56 PM, Chris Mason wrote: > Quoting Olof Johansson (2013-11-05 15:38:33) >> On Tue, Nov 5, 2013 at 12:33 PM, Chris Mason wrote: >>> Quoting Olof Johansson (2013-11-05 15:23:51) >>>> On Tue, Nov 5, 2013 at 11:33 AM, Jens Axboe wrote: >>> >>> [ horrible crashes fixed by removing my patch ] >>> ... > Ok, I think I see it. My guess is that you're hitting bounce buffers. > __blk_queue_bounce is the only caller of the bio splitting code I can > see that you might be hitting. > > My first patch exposed a lurking bug in bio_clone_biovec. Basically > bio->bi_vcnt is being doubled instead of initialized. > > This patch is only compile tested, but I think it'll fix it. Tested-by: Stephen Warren (this fixes the issue on Tegra30/Beaver at least)