From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759524Ab2C2Pzt (ORCPT ); Thu, 29 Mar 2012 11:55:49 -0400 Received: from mx1.redhat.com ([209.132.183.28]:61634 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759504Ab2C2Pzp (ORCPT ); Thu, 29 Mar 2012 11:55:45 -0400 Date: Thu, 29 Mar 2012 11:55:42 -0400 From: Dave Jones To: Linux Kernel Cc: Linus Torvalds Subject: lockups shortly after booting in current git. Message-ID: <20120329155542.GA31285@redhat.com> Mail-Followup-To: Dave Jones , Linux Kernel , Linus Torvalds MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In v3.3-8839-gb5174fa I see some behaviour on my laptop that I haven't noticed on other machines. It boots up, I can log in, and start up a terminal, firefox, banshee and use the system, and all is good. Then if I lock the screen, walk away for a while and come back to it, the loadavg has sky-rocketed, and every process is hung. Trying to run any commands that perform disk io hang immediately. There's a (truncated) sysrq-t output at http://codemonkey.org.uk/junk/process-trace.txt Top showed kworker was going nuts. Trying to run perf resulted in a black screen. anyone have any ideas ? Dave