From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932535AbYBZWGB (ORCPT ); Tue, 26 Feb 2008 17:06:01 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1764598AbYBZWFi (ORCPT ); Tue, 26 Feb 2008 17:05:38 -0500 Received: from smtp-102-tuesday.nerim.net ([62.4.16.102]:52777 "EHLO kraid.nerim.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1764154AbYBZWFg (ORCPT ); Tue, 26 Feb 2008 17:05:36 -0500 X-Greylist: delayed 36159 seconds by postgrey-1.27 at vger.kernel.org; Tue, 26 Feb 2008 17:05:36 EST Date: Tue, 26 Feb 2008 23:05:32 +0100 From: Jean Delvare To: Mariusz Kozlowski Cc: gregkh@suse.de, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org Subject: Re: problem with starting 2.6.25-rc1 and latest git Message-ID: <20080226230532.76f63db3@hyperion.delvare> In-Reply-To: <200802261704.46848.m.kozlowski@tuxland.pl> References: <200802132316.03155.m.kozlowski@tuxland.pl> <20080218142832.3a092dd5@hyperion.delvare> <20080226130254.5668d330@hyperion.delvare> <200802261704.46848.m.kozlowski@tuxland.pl> X-Mailer: Sylpheed-Claws 2.5.5 (GTK+ 2.10.6; x86_64-suse-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Mariusz, On Tue, 26 Feb 2008 17:04:46 +0100, Mariusz Kozlowski wrote: > I can reproduce this here on rc3 as well. Weird - on git tree before > rc3 was released this didn't happen. rc2 and rc1 are broken. I also > don't know why nobody else see this but us :) And not sure how > to debug it some more or provide more accurate information. Here's a quick and dirty debugging patch I wrote in an attempt to find out what was going on. Unfortunately, the problem never happened to me when this debug patch was applied. Maybe you'll have more "luck"? kernel/module.c | 4 ++++ 1 file changed, 4 insertions(+) --- linux-2.6.25-rc1.orig/kernel/module.c 2008-02-14 09:16:15.000000000 +0100 +++ linux-2.6.25-rc1/kernel/module.c 2008-02-14 23:20:22.000000000 +0100 @@ -2153,8 +2153,10 @@ sys_init_module(void __user *umod, return PTR_ERR(mod); } + printk(KERN_WARNING "loading module %s, checkpoint 1\n", mod->name); /* Drop lock so they can recurse */ mutex_unlock(&module_mutex); + printk(KERN_WARNING "loading module %s, checkpoint 2\n", mod->name); blocking_notifier_call_chain(&module_notify_list, MODULE_STATE_COMING, mod); @@ -2177,6 +2179,7 @@ sys_init_module(void __user *umod, /* Now it's a first class citizen! */ mutex_lock(&module_mutex); + printk(KERN_WARNING "loading module %s, checkpoint 3\n", mod->name); mod->state = MODULE_STATE_LIVE; /* Drop initial reference. */ module_put(mod); @@ -2186,6 +2189,7 @@ sys_init_module(void __user *umod, mod->init_size = 0; mod->init_text_size = 0; mutex_unlock(&module_mutex); + printk(KERN_WARNING "loading module %s, checkpoint 4\n", mod->name); wake_up(&module_wq); return 0; -- Jean Delvare