Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754589Ab0KMM6E (ORCPT ); Sat, 13 Nov 2010 07:58:04 -0500 Received: from canuck.infradead.org ([134.117.69.58]:35553 "EHLO canuck.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754322Ab0KMM6C convert rfc822-to-8bit (ORCPT ); Sat, 13 Nov 2010 07:58:02 -0500 Subject: Re: [BUG 2.6.27-rc1] find_busiest_group() LOCKUP From: Peter Zijlstra To: Wu Fengguang Cc: LKML , Ingo Molnar , Nikanth Karthikesan , Yinghai Lu , David Rientjes , "Zheng, Shaohui" , Andrew Morton , "linux-hotplug@vger.kernel.org" , Eric Dumazet , Bjorn Helgaas , Venkatesh Pallipadi , Nikhil Rao , Takuya Yoshikawa In-Reply-To: <20101113120030.GA31517@localhost> References: <20101111100628.GA24728@localhost> <1289478978.2084.74.camel@laptop> <20101111124015.GA9706@localhost> <1289480656.2084.80.camel@laptop> <20101113084018.GA23098@localhost> <1289644224.2084.521.camel@laptop> <20101113120030.GA31517@localhost> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Date: Sat, 13 Nov 2010 13:57:58 +0100 Message-ID: <1289653078.2084.675.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1033 Lines: 24 On Sat, 2010-11-13 at 20:00 +0800, Wu Fengguang wrote: > On Sat, Nov 13, 2010 at 06:30:24PM +0800, Peter Zijlstra wrote: > > On Sat, 2010-11-13 at 16:40 +0800, Wu Fengguang wrote: > > > > Will try and figure out how the heck that's happening, Ingo any clue? > > > > > > It's back to normal on 2.6.37-rc1 when reverting commit 50f2d7f682f9 > > > ("x86, numa: Assign CPUs to nodes in round-robin manner on fake NUMA"). > > > > > > The interesting part is, the commit was introduced in > > > 2.6.36-rc7..2.6.36, however 2.6.36 boots OK, while 2.6.37-rc1 panics. > > > > Argh, that commit again.. > > > > Does this fix it: http://lkml.org/lkml/2010/11/12/8 > > No it still panics. Here is the dmesg. OK, I'll let Nikanth have a look, if all else fails we can always revert that patch. -- 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/