From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754583AbXEACp5 (ORCPT ); Mon, 30 Apr 2007 22:45:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754520AbXEACp4 (ORCPT ); Mon, 30 Apr 2007 22:45:56 -0400 Received: from cantor2.suse.de ([195.135.220.15]:44966 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754586AbXEACpz (ORCPT ); Mon, 30 Apr 2007 22:45:55 -0400 Date: Tue, 1 May 2007 05:43:30 +0200 From: Andi Kleen To: Andrew Morton Cc: Randy Dunlap , linux-kernel@vger.kernel.org, Andi Kleen Subject: Re: 2.6.21-rc7-mm2 hangs in boot (netconsole) Message-ID: <20070501034330.GJ25929@bingen.suse.de> References: <20070425225716.8e9b28ca.akpm@linux-foundation.org> <20070429220132.951cdf7f.randy.dunlap@oracle.com> <20070429222354.63265e3f.akpm@linux-foundation.org> <20070430081653.60fab0a5.randy.dunlap@oracle.com> <20070430165101.6463fee1.randy.dunlap@oracle.com> <20070430171229.d514ba19.akpm@linux-foundation.org> <46368DC3.5070503@oracle.com> <20070430180821.eb269fe3.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070430180821.eb269fe3.akpm@linux-foundation.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > Andi: unprocessor x86_64 running rc7-mm2 is hanging early in boot at > randomish times (presumably in the timer irq handler) when netconsole and > printk-time are enabled. A backtrace would be good. Does nmi_watchdog=2 show anything interesting or if not sysrq-t? > > I was hitting the same thing on i386 uniprocessor, but I thought it got > fixed. Yes. My current sched_clock does not take any locks anymore and it was removed from the cpufreq handler too. -Andi