Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762454AbXJRErS (ORCPT ); Thu, 18 Oct 2007 00:47:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751663AbXJRErE (ORCPT ); Thu, 18 Oct 2007 00:47:04 -0400 Received: from smtp2.linux-foundation.org ([207.189.120.14]:51841 "EHLO smtp2.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752038AbXJRErD (ORCPT ); Thu, 18 Oct 2007 00:47:03 -0400 Date: Wed, 17 Oct 2007 21:45:54 -0700 (PDT) From: Linus Torvalds To: Mark Lord cc: David Miller , fujita.tomonori@lab.ntt.co.jp, jens.axboe@oracle.com, mingo@elte.hu, linux-kernel@vger.kernel.org, jgarzik@pobox.com, alan@lxorguk.ukuu.org.uk, tomof@acm.org Subject: Re: [bug] ata subsystem related crash with latest -git In-Reply-To: <4716DE82.2050006@rtr.ca> Message-ID: References: <20071018080048O.fujita.tomonori@lab.ntt.co.jp> <20071017.181907.63126798.davem@davemloft.net> <4716D6B1.8010309@rtr.ca> <4716DB9A.2060809@rtr.ca> <4716DE82.2050006@rtr.ca> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1039 Lines: 36 On Thu, 18 Oct 2007, Mark Lord wrote: > > Okay, mine is dying with EIP at blk_rq_map_sg+0xcb/0x160. Ok, I think your picture cut off the last hex digits on the right, but what I can make out of the disassembly, I have to admit that it looks very much like it might be exactly the same thing Ingo was seeing. The disassembly is a bit scrambled, but the particular instruction that oopses for you is mov 0x10(%ebx),%eax and the instructions around it do seem to bear some similarity to the whole "sg_next()" thing, ie I see a test $0x1,%al and a lea 0x10(%ebx),%eax around there too. If you cut down the number of entries printed for the call trace (which involves editing the source code, no nice config options, I'm afraid), you could get the rest of it.. Linus - 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/