Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262948AbTHVA5H (ORCPT ); Thu, 21 Aug 2003 20:57:07 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262975AbTHVA5G (ORCPT ); Thu, 21 Aug 2003 20:57:06 -0400 Received: from tolkor.sgi.com ([198.149.18.6]:56500 "EHLO tolkor.sgi.com") by vger.kernel.org with ESMTP id S262948AbTHVA5C (ORCPT ); Thu, 21 Aug 2003 20:57:02 -0400 Subject: Re: Hang when mounting XFS root in 2.6.0 tests on x86-64 From: Steve Lord To: Andi Kleen Cc: Chris Meadors , Linux Kernel , linux-xfs@oss.sgi.com In-Reply-To: References: Content-Type: text/plain Content-Transfer-Encoding: 7bit X-Mailer: Ximian Evolution 1.0.8 (1.0.8-11) Date: 21 Aug 2003 19:55:32 -0500 Message-Id: <1061513734.1622.55.camel@laptop.americas.sgi.com> Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1776 Lines: 49 On Thu, 2003-08-21 at 16:00, Andi Kleen wrote: > Chris Meadors writes: > > Better report it to linux-xfs@oss.sgi.com (cc'ed) too. > > > I'm trying to get a 2.6.0-test kernel to boot on my Opteron system. It > > has SuSE's 2.4.19-SMP kernel on it now, and it boots with that, mounts > > the XFS root just fine. But I build a vanilla 2.6.0-test3 with no > > module support, everything included that I would need. The last line > > that it prints during boot is the NET4.0 > > > > Repeated presses of Alt+SysRq+P seems to show RIP looping in xfs_xlatesb > > and xfs_lowbit64. Seems to suggest a platform specific problem with this code, Andi, didn't you write the function behind xfs_lowbit64? > > > > I've tried -test3-bk9 and also went back to -test2 and -test1. > > > > Earlier when playing with this machine I built 2.6.0-test3 with a 32 bit > > only version of gcc, but still optimized for the Opteron. This one had > > no problem booting and mounting the XFS root. > > > > This is easy to reproduce, so let me know if more information is needed. > > I test XFS (but not as root) occasionally on x86-64 and seen no problems > so far. I haven't tested it with test2+ yet though. This code chunk will be the same no matter which filesystem you are mounting, if the hang happened on an xfs root, I would expect to see it on any xfs filesystem with that kernel. > > What compiler are you using? > Some disassembly output and help from someone who can read it might be in order here. Steve - 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/