Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754939AbYHSES4 (ORCPT ); Tue, 19 Aug 2008 00:18:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751231AbYHSESs (ORCPT ); Tue, 19 Aug 2008 00:18:48 -0400 Received: from gate.crashing.org ([63.228.1.57]:36340 "EHLO gate.crashing.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751192AbYHSESs (ORCPT ); Tue, 19 Aug 2008 00:18:48 -0400 Subject: Re: ftrace introduces instability into kernel 2.6.27(-rc2,-rc3) From: Benjamin Herrenschmidt Reply-To: benh@kernel.crashing.org To: Steven Rostedt Cc: Scott Wood , Eran Liberty , Mathieu Desnoyers , linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org, Steven Rostedt , "Paul E. McKenney" In-Reply-To: References: <48591941.4070408@extricom.com> <48A92E15.2080709@extricom.com> <48A9901B.1080900@redhat.com> <20080818154746.GA26835@Krystal> <48A9AFA7.8080508@freescale.com> <1219110814.8062.2.camel@pasglop> <1219113549.8062.13.camel@pasglop> <1219114600.8062.15.camel@pasglop> Content-Type: text/plain Date: Tue, 19 Aug 2008 14:17:11 +1000 Message-Id: <1219119431.8062.35.camel@pasglop> Mime-Version: 1.0 X-Mailer: Evolution 2.22.3.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 815 Lines: 24 On Mon, 2008-08-18 at 23:12 -0400, Steven Rostedt wrote: > On Tue, 19 Aug 2008, Benjamin Herrenschmidt wrote: > > > Ok, so i did a patch, but it doesn't fix the problem. So > > there's something else whacking on the stack frames. > > Is it 32 bit or 64? I've tested the 64 bit quite a bit, but not so much > the 32 (my powerbook is not usually that stable). 32-bit. Reproduced on powerbook by a user, 440, 750, ... > You might want to look at the entry.S mcount code too. Yeah, I had a look, nothing obviously bad there, but I may just have missed it :-) Ben. -- 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/