From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751098AbWF2RlX (ORCPT ); Thu, 29 Jun 2006 13:41:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751097AbWF2RlX (ORCPT ); Thu, 29 Jun 2006 13:41:23 -0400 Received: from smtp.osdl.org ([65.172.181.4]:23993 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S1751098AbWF2RlW (ORCPT ); Thu, 29 Jun 2006 13:41:22 -0400 Date: Thu, 29 Jun 2006 10:41:17 -0700 From: Andrew Morton To: Helge Hafting Cc: linux-kernel@vger.kernel.org Subject: Re: 2.6.17-mm one process gets stuck in infinite loop in the kernel. Message-Id: <20060629104117.e96df3da.akpm@osdl.org> In-Reply-To: <44A3B8A0.4070601@aitel.hist.no> References: <20060629013643.4b47e8bd.akpm@osdl.org> <44A3B8A0.4070601@aitel.hist.no> X-Mailer: Sylpheed version 2.2.4 (GTK+ 2.8.17; i686-pc-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 On Thu, 29 Jun 2006 13:25:20 +0200 Helge Hafting wrote: > I have seen this both with mm2, m33 and mm4. > Suddenly, the load meter jumps. > Using ps & top, I see one process using 100% cpu. > This is always a process that was exiting, this tend to happen > when I close applications, or doing debian upgrades which > runs lots of short-lived processes. > > I believe it is running in the kernel, ps lists it with stat "RN" > and it cannot be killed, not even with kill -9 from root. > > Something wrong with process termination? > Please generate a kernel profile when it happens so we can see where it got stuck. readprofile -r sleep 10 readprofile -n -v -m /boot/System.map | sort -n -k 3 | tail -40