From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754020AbZI3JKg (ORCPT ); Wed, 30 Sep 2009 05:10:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752658AbZI3JKg (ORCPT ); Wed, 30 Sep 2009 05:10:36 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.122]:44418 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752153AbZI3JKf (ORCPT ); Wed, 30 Sep 2009 05:10:35 -0400 Subject: Re: 2.6.31.1 boot crash, compiled with ftrace From: Steven Rostedt To: Dick Hollenbeck Cc: linux-kernel@vger.kernel.org, Peter Zijlstra In-Reply-To: <1254297804.2963.14.camel@frodo> References: <4AC22613.4090803@softplc.com> <1254297804.2963.14.camel@frodo> Content-Type: text/plain Date: Wed, 30 Sep 2009 05:09:21 -0400 Message-Id: <1254301761.7286.4.camel@frodo> Mime-Version: 1.0 X-Mailer: Evolution 2.26.3 (2.26.3-1.fc11) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2009-09-30 at 04:03 -0400, Steven Rostedt wrote: > On Tue, 2009-09-29 at 10:21 -0500, Dick Hollenbeck wrote: > > Please help with a kernel boot crash. This is happening with ftrace > > enabled. (I have yet to try without ftrace.) This same box runs > > kernel 2.6.26 fine. > > > > While running 'make oldconfig' coming up from 2.6.26, the three most > > significant changes were: > > > > 1) changed CPU from 486 to Pentium-Classic > > > > 2) Added "High Memory Support" 4 GB > > > > 3) Enabled various ftrace options, because I am on the hunt for some > > insane latency problems. > > > > Hi Dick, > > Thanks for reporting this. Peter and I have been taking some look at it. > We are not sure that it is ftrace related. have you tried booting the > kernel without adding ftrace? Hi, I just booted your config a couple of times without any issues. How reproducible is this? Thanks, -- Steve