Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751390AbXBZXYJ (ORCPT ); Mon, 26 Feb 2007 18:24:09 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751345AbXBZXYJ (ORCPT ); Mon, 26 Feb 2007 18:24:09 -0500 Received: from mx1.redhat.com ([66.187.233.31]:57432 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750740AbXBZXYH (ORCPT ); Mon, 26 Feb 2007 18:24:07 -0500 Message-ID: <45E36844.5040402@redhat.com> Date: Mon, 26 Feb 2007 18:07:48 -0500 From: Chuck Ebbert Organization: Red Hat User-Agent: Thunderbird 1.5.0.9 (X11/20070212) MIME-Version: 1.0 To: Stephen Hemminger CC: linux-kernel , netdev@vger.kernel.org Subject: Re: netconsole module cannot be removed References: <45E3447F.9080706@redhat.com> <20070226133156.3bfd2a74@freekitty> In-Reply-To: <20070226133156.3bfd2a74@freekitty> 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 Content-Length: 962 Lines: 32 Stephen Hemminger wrote: > On Mon, 26 Feb 2007 15:35:11 -0500 > Chuck Ebbert wrote: > >> Trying to remove netconsole, rmmod goes into a tight loop with >> 100% CPU usage. It can't be killed with 'kill -9'. Shutdown >> works, though. Kernel is 2.6.20 FC6 config, and I'm 99.9% >> sure the module signing has nothing to do with this. >> > > No it probably has to do with printing a message during module removal. > Works fine in 2.6.19.5 Hangs in vanilla 2.6.20 in netpoll_cleanup() Call trace: flush_cpu_workqueue flush_workqueue cancel_rearming_delayed_workqueue netpoll_cleanup sys_delete_module It varies, but is always in one of the first three functions when you do alt-sysrq-p. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/