From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932445AbWF2Ujp (ORCPT ); Thu, 29 Jun 2006 16:39:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932447AbWF2Ujp (ORCPT ); Thu, 29 Jun 2006 16:39:45 -0400 Received: from mail.charite.de ([160.45.207.131]:28647 "EHLO mail.charite.de") by vger.kernel.org with ESMTP id S932445AbWF2Ujo (ORCPT ); Thu, 29 Jun 2006 16:39:44 -0400 Date: Thu, 29 Jun 2006 22:39:42 +0200 From: Ralf Hildebrandt To: Andrew Morton Cc: Helge Hafting , linux-kernel@vger.kernel.org Subject: Re: 2.6.17-mm one process gets stuck in infinite loop in the kernel. Message-ID: <20060629203942.GE20456@charite.de> Mail-Followup-To: Andrew Morton , Helge Hafting , linux-kernel@vger.kernel.org References: <20060629013643.4b47e8bd.akpm@osdl.org> <44A3B8A0.4070601@aitel.hist.no> <20060629104117.e96df3da.akpm@osdl.org> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20060629104117.e96df3da.akpm@osdl.org> User-Agent: Mutt/1.5.11+cvs20060403 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org * Andrew Morton : > > 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. I see exactly the same here. > Please generate a kernel profile when it happens so we can see > where it got stuck. Do I need to compile the kernel with profiling for this:> > to work? And is "profile=1" a boot parameter? -- Ralf Hildebrandt (i.A. des IT-Zentrums) Ralf.Hildebrandt@charite.de Charite - Universitätsmedizin Berlin Tel. +49 (0)30-450 570-155 Gemeinsame Einrichtung von FU- und HU-Berlin Fax. +49 (0)30-450 570-962 IT-Zentrum Standort CBF send no mail to spamtrap@charite.de