From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Greear Subject: Re: [PATCH] igmp: spin_lock_bh in timer (Re: BUG: soft lockup detected on CPU#0!) Date: Fri, 22 Dec 2006 06:05:18 -0800 Message-ID: <458BE61E.9030004@candelatech.com> References: <45889C53.8000307@candelatech.com> <20061222071308.GA1791@ff.dom.local> <20061222074209.GA2148@ff.dom.local> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, David Miller Return-path: Received: from ns2.lanforge.com ([66.165.47.211]:57044 "EHLO ns2.lanforge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1422999AbWLVOF1 (ORCPT ); Fri, 22 Dec 2006 09:05:27 -0500 To: Jarek Poplawski In-Reply-To: <20061222074209.GA2148@ff.dom.local> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Jarek Poplawski wrote: > On Fri, Dec 22, 2006 at 08:13:08AM +0100, Jarek Poplawski wrote: >> On 20-12-2006 03:13, Ben Greear wrote: >>> This is from 2.6.18.2 kernel with my patch set. The MAC-VLANs are in >>> active use. >>> From the backtrace, I am thinking this might be a generic problem, >>> however. >>> >>> Any ideas about what this could be? It seems to be reproducible every >>> day or > ... >> If it doesn't help, I hope lockdep will be more >> precise when you'll upgrade to 2.6.19 or higher. > > ... or when you enable lockdep in 2.6.18 (I've > forgotten it's there alredy!). I got lucky..the system was available by ssh still. I see this in the boot logs..I assume this means lockdep is enabled? Should I have expected to see a lockdep trace in the case of his soft-lockup then? ..... Dec 19 04:33:48 localhost kernel: Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo MolnarDec 19 04:33:48 localhost kernel: ... MAX_LOCKDEP_SUBCLASSES: 8 Dec 19 04:33:48 localhost kernel: ... MAX_LOCK_DEPTH: 30 Dec 19 04:33:48 localhost kernel: ... MAX_LOCKDEP_KEYS: 2048 Dec 19 04:33:48 localhost kernel: ... CLASSHASH_SIZE: 1024 Dec 19 04:33:48 localhost kernel: ... MAX_LOCKDEP_ENTRIES: 8192 Dec 19 04:33:48 localhost kernel: ... MAX_LOCKDEP_CHAINS: 8192 Dec 19 04:33:48 localhost kernel: ... CHAINHASH_SIZE: 4096 Dec 19 04:33:48 localhost kernel: memory used by lock dependency info: 696 kB Dec 19 04:33:48 localhost kernel: per task-struct memory footprint: 1200 bytes Dec 19 04:33:48 localhost kernel: ------------------------ Dec 19 04:33:48 localhost kernel: | Locking API testsuite: .... > > Jarek P. -- Ben Greear Candela Technologies Inc http://www.candelatech.com