From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Paul E. McKenney" Subject: Re: [Bug 10071] kernel hang in inet_init (PREEMPT_RCU problem) Date: Thu, 28 Feb 2008 20:32:35 -0800 Message-ID: <20080229043235.GA25167@linux.vnet.ibm.com> References: <20080228205303.261D311D108@picon.linux-foundation.org> <20080228213457.GA2770@ami.dom.local> <20080229005823.GF14104@linux.vnet.ibm.com> Reply-To: paulmck@linux.vnet.ibm.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: bugme-daemon@bugzilla.kernel.org, Yannick Dirou , linux-kernel@vger.kernel.org, netdev@vger.kernel.org To: Jarek Poplawski Return-path: Received: from e35.co.us.ibm.com ([32.97.110.153]:54794 "EHLO e35.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751697AbYB2Ecr (ORCPT ); Thu, 28 Feb 2008 23:32:47 -0500 Content-Disposition: inline In-Reply-To: <20080229005823.GF14104@linux.vnet.ibm.com> Sender: netdev-owner@vger.kernel.org List-ID: On Thu, Feb 28, 2008 at 04:58:23PM -0800, Paul E. McKenney wrote: > On Thu, Feb 28, 2008 at 10:34:57PM +0100, Jarek Poplawski wrote: > > On Thu, Feb 28, 2008 at 12:53:03PM -0800, bugme-daemon@bugzilla.kernel.org wrote: > > > http://bugzilla.kernel.org/show_bug.cgi?id=10071 > > ... > > > ------- Comment #17 from yannick.dirou@axetic.com 2008-02-28 12:53 ------- > > > bingo with classic rcu > > > > Congratulations Yannick! > > > > So, it seems mainly RCU vs. timer(?) problem. I send CC of this message > > to RCU author, linux-kernel and netdev lists. > > Interesting! Any chance of a pointer to the original messages? > A quick Google search and a look at LKML showed me nothing. :-/ Thanks to Raphael for pointing me at the above bugzilla URL! Yannick, Would you be willing to try your test again after applying the patch in http://lkml.org/lkml/2008/2/2/11 and rebuilding your kernel? This patch does not appear to be in 2.6.25-rc3. :-( I am reposting this patch separately. Thanx, Paul