From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751585Ab3KSB7N (ORCPT ); Mon, 18 Nov 2013 20:59:13 -0500 Received: from cdptpa-outbound-snat.email.rr.com ([107.14.166.226]:16709 "EHLO cdptpa-oedge-vip.email.rr.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751341Ab3KSB7M convert rfc822-to-8bit (ORCPT ); Mon, 18 Nov 2013 20:59:12 -0500 Date: Mon, 18 Nov 2013 20:59:09 -0500 From: Steven Rostedt To: Gao feng Cc: "Eric W. Biederman" , LKML , "netdev@vger.kernel.org" , David Miller , Cedric Le Goater , "Paul E. McKenney" , Pavel Emelyanov , Andrew Morton , Clark Williams , Arnaldo Carvalho de Melo Subject: Re: [PATCH] nsproxy: Check to make sure count is truly zero before freeing Message-ID: <20131118205909.6bc27f0e@gandalf.local.home> In-Reply-To: <528ABD6E.8020004@cn.fujitsu.com> References: <20131113160339.7e0726fb@gandalf.local.home> <877gc5l3hq.fsf@xmission.com> <20131118190457.7ad4e0a0@gandalf.local.home> <528ABD6E.8020004@cn.fujitsu.com> X-Mailer: Claws Mail 3.9.2 (GTK+ 2.24.20; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8BIT X-RR-Connecting-IP: 107.14.168.130:25 X-Cloudmark-Score: 0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 19 Nov 2013 09:22:54 +0800 Gao feng wrote: > On 11/19/2013 08:04 AM, Steven Rostedt wrote: > > > > I'll start out saying that this email was a complete oops. I only kept > > it around for reference, as this didn't fix the bug we were seeing, and > > I used this email to just document what I initially thought. > > > > Can you describe the panic situation and the way to reproduce? > it's useful for us to find out the real problem. > I need to talk with more people to get more information as it happened in our test labs. From what I remember, it was caused on 3.10-rt (even with PREEMPT_RT disabled). We are currently testing 3.10 vanilla, to make sure that it really does occur on mainline. >>From what I understand, it was ltp-lite that caused the panic and it happened on a box with 16 CPUs. I'll keep you posted when we get more data that is relevant to mainline. This is another reason that the email went out prematurely. -- Steve