From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chuck Ebbert Subject: Re: Occational lockups during boot with post 2.6.22 kernels Date: Wed, 18 Jul 2007 10:58:51 -0400 Message-ID: <469E2AAB.2010408@redhat.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: linux-kernel@vger.kernel.org, Bcm43xx-dev@lists.berlios.de, "John W. Linville" , Netdev To: Peter Osterlund Return-path: Received: from mx1.redhat.com ([66.187.233.31]:32912 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753078AbXGRO72 (ORCPT ); Wed, 18 Jul 2007 10:59:28 -0400 In-Reply-To: Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On 07/17/2007 08:20 PM, Peter Osterlund wrote: > Current -git kernels sometimes lock up on my computer during boot. I > guess it happens about 10-20% of the time. I first saw this maybe a > week ago, but never with kernels <= 2.6.22. > > The last reported info on the console is that named is started. > SysRq-T still works and reports the non-sleeping tasks below. > > My guess is that wpa_supplicant and events/0 deadlock and later the > named thread also hangs when it needs a deadlocked resource. > > I'm using the bcm43xx driver. > > No lockdep errors are reported before the lockup. Earlier during boot > the kernel reports: > > Good, all 218 testcases passed! | Try this, it should at least detect the problem: http://lkml.org/lkml/2007/7/17/202 http://lkml.org/lkml/2007/7/17/204 http://lkml.org/lkml/2007/7/17/203 It's a known bug in wireless/80211, not sure when it will be fixed.