From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266234AbUGOQMT (ORCPT ); Thu, 15 Jul 2004 12:12:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266236AbUGOQMT (ORCPT ); Thu, 15 Jul 2004 12:12:19 -0400 Received: from out2.smtp.messagingengine.com ([66.111.4.26]:29863 "EHLO out2.smtp.messagingengine.com") by vger.kernel.org with ESMTP id S266234AbUGOQMR (ORCPT ); Thu, 15 Jul 2004 12:12:17 -0400 X-Sasl-enc: 1svYqi54KtUH4dW/O433Bg 1089907936 Message-ID: <006801c46a86$81234230$9aafc742@ROBMHP> From: "Rob Mueller" To: "Chris Mason" , "William Lee Irwin III" Cc: References: <00f601c46539$0bdf47a0$e6afc742@ROBMHP> <1089377936.3956.148.camel@watt.suse.com> Subject: Re: Processes stuck in unkillable D state (now seen in 2.6.8-rc1) Date: Thu, 15 Jul 2004 09:12:13 -0700 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2149 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2149 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org I upgraded the kernel on a couple of the machines to 2.6.8-rc1 (compiled with debug symbols), but now we've seen two completely different types of failures 1. The same as the old one, where a couple of processes (half dozen in this case) would get stuck in D state, but the machine was otherwise pretty much fine 2. A new one where over 1000 processes get stuck within a short period of time and leave the machine is a very fragile state (even attempts to run 'ps -auxw' freeze up) I've placed all the results here: http://robm.fastmail.fm/kernel/t3/ sysreqdmesg1-s1.txt - output of sysreq-t for system with a few procs in D state sysreqdmesg2-s1.txt - same again, just done a second time sysreqdmesg1-s2.txt - output of sysreq-t for system with 1000 procs in D state vmlinux.gz - kernel image, built with debug symbols config - config used to compile the kernel Is there anything else I can provide? This problem is driving us crazy and I'd like to help in any way possible to try and get it investigated and resolved. Rob