From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261955AbULVJiA (ORCPT ); Wed, 22 Dec 2004 04:38:00 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261956AbULVJiA (ORCPT ); Wed, 22 Dec 2004 04:38:00 -0500 Received: from fw.osdl.org ([65.172.181.6]:37597 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S261955AbULVJhz (ORCPT ); Wed, 22 Dec 2004 04:37:55 -0500 Date: Wed, 22 Dec 2004 01:37:26 -0800 From: Andrew Morton To: Chris Stromsoe Cc: linux-kernel@vger.kernel.org Subject: Re: 2.6.10-rc3, syslogd hangs then processes get stuck in schedule_timeout Message-Id: <20041222013726.72da5ee7.akpm@osdl.org> In-Reply-To: References: X-Mailer: Sylpheed version 0.9.7 (GTK+ 1.2.10; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Chris Stromsoe wrote: > > I'm still seeing this problem. It repeats every week or week and a half, > usually after logs have been rotated and a dvd has been written. syslogd > stops writing output, then everything that does schedule_timeout() hangs, > the process table fills, and everything grinds to a halt. > > If the problem is detected early enough, syslogd can be manually killed > and restarted, unwedging everything and returning everything to normal > operation. > > I'm running 2.6.10-rc3, compiled with smp. I've been seeing this since at > least 2.6.8.1, both smp and nosmp. userspace is debian testing. > > sysrq+t output from three hangs in November with 2.6.9 is at > http://hashbrown.cts.ucla.edu/deadlock/. Can't see anything untoward there, although one wonders why you have 609 instances of cron running.