From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932081Ab0CICKj (ORCPT ); Mon, 8 Mar 2010 21:10:39 -0500 Received: from cn.fujitsu.com ([222.73.24.84]:60904 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1756516Ab0CICKi (ORCPT ); Mon, 8 Mar 2010 21:10:38 -0500 Message-ID: <4B95AE4E.6060700@cn.fujitsu.com> Date: Tue, 09 Mar 2010 10:11:26 +0800 From: Li Zefan User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1b3pre) Gecko/20090513 Fedora/3.0-2.3.beta2.fc11 Thunderbird/3.0b2 MIME-Version: 1.0 To: rostedt@goodmis.org CC: Frederic Weisbecker , =?ISO-8859-15?Q?Am=E9rico_?= =?ISO-8859-15?Q?Wang?= , LKML , Ingo Molnar Subject: Re: 2.6.33: ftrace triggers soft lockup References: <2375c9f91003022204p5bdab1fdj3b3500998575fc28@mail.gmail.com> <1267710847.10871.102.camel@gandalf.stny.rr.com> <2375c9f91003042014y17588865g8f9110e666ac2456@mail.gmail.com> <2375c9f91003042316g6e774d60n90dfc4784d3b66bf@mail.gmail.com> <1267801603.10871.1725.camel@gandalf.stny.rr.com> <20100305171614.GC5244@nowhere> <4B94A816.4090608@cn.fujitsu.com> <1268061312.10871.1810.camel@gandalf.stny.rr.com> In-Reply-To: <1268061312.10871.1810.camel@gandalf.stny.rr.com> Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Steven Rostedt wrote: > On Mon, 2010-03-08 at 15:32 +0800, Li Zefan wrote: > >>> And Li seems to see the same thing. >> Yes, and more than this. I can see segmentation fault while testing, >> both my testing threads and kernel building threads that are running >> at the same time can get segfault. > > Segfaults?? > Yes. > This sounds like the compiler may have screwed up again. Can you compile > with this patch and see if it catches anything? > But I was using a x86_64 machine, and this patch won't do anything on x86_64?