Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S272142AbTHRReG (ORCPT ); Mon, 18 Aug 2003 13:34:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S272150AbTHRReG (ORCPT ); Mon, 18 Aug 2003 13:34:06 -0400 Received: from ppp-217-133-42-200.cust-adsl.tiscali.it ([217.133.42.200]:23463 "EHLO dualathlon.random") by vger.kernel.org with ESMTP id S272142AbTHRReD (ORCPT ); Mon, 18 Aug 2003 13:34:03 -0400 Date: Mon, 18 Aug 2003 16:23:32 +0200 From: Andrea Arcangeli To: Willy Tarreau Cc: Stephan von Krawczynski , Marcelo Tosatti , linux-kernel@vger.kernel.org, green@namesys.com Subject: Re: 2.4.22-pre lockups (now decoded oops for pre10) Message-ID: <20030818142332.GV7862@dualathlon.random> References: <20030802142734.5df93471.skraw@ithnet.com> <20030806094150.4d7b0610.skraw@ithnet.com> <20030806090920.GA9492@alpha.home.local> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030806090920.GA9492@alpha.home.local> User-Agent: Mutt/1.4i X-GPG-Key: 1024D/68B9CB43 13D9 8355 295F 4823 7C49 C012 DFA1 686E 68B9 CB43 X-PGP-Key: 1024R/CB4660B9 CC A0 71 81 F4 A0 63 AC C0 4B 81 1D 8C 15 C8 E5 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1759 Lines: 36 On Wed, Aug 06, 2003 at 11:09:20AM +0200, Willy Tarreau wrote: > On Wed, Aug 06, 2003 at 09:41:50AM +0200, Stephan von Krawczynski wrote: > > > Code; c0144b14 <__remove_from_queues+14/30> > > 00000000 <_EIP>: > > Code; c0144b14 <__remove_from_queues+14/30> <===== > > 0: 89 02 mov %eax,(%edx) <===== > > Code; c0144b16 <__remove_from_queues+16/30> > > 2: c7 41 30 00 00 00 00 movl $0x0,0x30(%ecx) > > Code; c0144b1d <__remove_from_queues+1d/30> > > 9: 89 4c 24 04 mov %ecx,0x4(%esp,1) > > Code; c0144b21 <__remove_from_queues+21/30> > > d: e9 7a ff ff ff jmp ffffff8c <_EIP+0xffffff8c> > > Code; c0144b26 <__remove_from_queues+26/30> > > 12: 8d 76 00 lea 0x0(%esi),%esi > > once again, it's *pprev=next which is is causing trouble, with pprev=6 this > time (fs/buffer.c:523). There really seems to be something playing badly with > this... > > I find amazing that such widely used portions of code only trigger panics on > your system ! either it's a rare combinations of several components/drivers, or > a strange hardware problem, although I can't imagine which (cpu? bus locking?). normally it's bad ram (or anyways a problem with the memory) when bugs triggers in that place reproducibly. the list walking trashes the l2 and that put more stress on the ram. If it was random memory corruption (software) it would more likely crash in different places (though it's not guaranteed ;). Andrea - 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/