From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751511AbXCDJFk (ORCPT ); Sun, 4 Mar 2007 04:05:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751514AbXCDJFk (ORCPT ); Sun, 4 Mar 2007 04:05:40 -0500 Received: from xdsl-664.zgora.dialog.net.pl ([81.168.226.152]:2543 "EHLO tuxland.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751511AbXCDJFi (ORCPT ); Sun, 4 Mar 2007 04:05:38 -0500 From: Mariusz Kozlowski To: Andrew Morton Subject: Re: 2.6.21-rc2-mm1 Date: Sun, 4 Mar 2007 10:07:31 +0100 User-Agent: KMail/1.9.5 Cc: linux-kernel@vger.kernel.org References: <20070302030026.5eef0c92.akpm@linux-foundation.org> In-Reply-To: <20070302030026.5eef0c92.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200703041007.31800.m.kozlowski@tuxland.pl> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hello, I'm experiencing weird system hangs with recent -mm. After a few hours of uptime for no obvious reason system hangs and is (almost) unusable until reset. a few facts: - this happens on random basis without anything obvious that could trigger it - if some music is played and system hangs the music starts looping in thight loop causing weird sound effects - sometimes I'm able to switch from X to console, it takes a few seconds to switch though - system is eating 100% CPU what is shown by my laptop fans - when I switch to console I can issue SysRq commands but they do not work i.e.: SysRq + P shows only the first line: "SysRq: Show Regs" - in console in which I can log into the system I'm unable to type - in console where syslog is logging *.* I'm able to type - if the wifi card was plugged into the system before the hang happend the networking seems to work ok - when I reattach my pcmcia wifi card it doesn't get detected (nothing happens) - when I try to login to my laptop from remote machine the line "login:" and that's it, nothing more happens - system logs show nothing interesting as even if there is some usable debug info I'm unable to SysRq + S and read it after reboot With 2.6.20-mm1 it happened as well. I get the feeling that 2.6.20-rc2-mm1 needs a bit more uptime to hit this bug. Regards, Mariusz Kozlowski