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 16:58:23 -0800 Message-ID: <20080229005823.GF14104@linux.vnet.ibm.com> References: <20080228205303.261D311D108@picon.linux-foundation.org> <20080228213457.GA2770@ami.dom.local> 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 e32.co.us.ibm.com ([32.97.110.150]:35614 "EHLO e32.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759975AbYB2A6l (ORCPT ); Thu, 28 Feb 2008 19:58:41 -0500 Content-Disposition: inline In-Reply-To: <20080228213457.GA2770@ami.dom.local> Sender: netdev-owner@vger.kernel.org List-ID: 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. :-/ Thanx, Paul > I'm not sure how much time you could/will to offer for this debugging. > Anyway, if it's possible I think it would be interesting to check with > CONFIG_PREEMPT_RCU = y again, but CONFIG_HOTPLUG_CPU = n ("Processor > type and features --> Support for suspend on SMP and ...") in the > meantime. > > Many thanks, > Jarek P. > > > > [ 0.770854] NET: Registered protocol family 2 > > [ 0.770868] 4294668327 net/ipv4/af_inet.c 1387 > > [ 0.770884] 4294668327 net/ipv4/af_inet.c 1390 > > [ 0.770888] 4294668327 net/ipv4/af_inet.c 1393 > > [ 0.770891] 4294668327 net/ipv4/af_inet.c 1402 > > [ 0.770893] 4294668327 net/ipv4/af_inet.c 1407 > > [ 0.773078] 0 4294668328l > > [ 0.774036] 0 4294668329l > > [ 0.775037] 0 4294668330l > > [ 0.775040] 4294668330 net/ipv4/af_inet.c 1419 > > [ 0.775077] 4294668330 net/ipv4/af_inet.c 1426 > > [ 0.775077] 4294668330 net/ipv4/route.c 2998 > > [ 0.775077] 4294668330 net/ipv4/route.c 3009 > > [ 0.775077] 4294668330 net/ipv4/route.c 3016 > > [ 0.775077] IP route cache hash table entries: 32768 (order: 5, 131072 > > bytes) > > [ 0.775077] 4294668330 net/ipv4/route.c 3027 > > [ 0.775492] TCP established hash table entries: 131072 (order: 8, 1048576 > > bytes) > > [ 0.776318] TCP bind hash table entries: 65536 (order: 9, 2359296 bytes) > > [ 0.785670] TCP: Hash tables configured (established 131072 bind 65536) > > [ 0.785715] TCP reno registered > > > > > > -- > > Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email > > ------- You are receiving this mail because: ------- > > You are on the CC list for the bug, or are watching someone who is. > > You are the assignee for the bug, or are watching the assignee.