Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751682AbXBVQ5E (ORCPT ); Thu, 22 Feb 2007 11:57:04 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751712AbXBVQ5E (ORCPT ); Thu, 22 Feb 2007 11:57:04 -0500 Received: from caramon.arm.linux.org.uk ([217.147.92.249]:4545 "EHLO caramon.arm.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751682AbXBVQ5B (ORCPT ); Thu, 22 Feb 2007 11:57:01 -0500 Date: Thu, 22 Feb 2007 16:56:50 +0000 From: Russell King To: Jose Goncalves Cc: "Michael K. Edwards" , Frederik Deweerdt , akpm@linux-foundation.org, linux-kernel@vger.kernel.org Subject: Re: Serial related oops Message-ID: <20070222165650.GA633@flint.arm.linux.org.uk> Mail-Followup-To: Jose Goncalves , "Michael K. Edwards" , Frederik Deweerdt , akpm@linux-foundation.org, linux-kernel@vger.kernel.org References: <20070219150508.GD27370@flint.arm.linux.org.uk> <45D9D073.7020701@inov.pt> <20070219164200.GF27370@flint.arm.linux.org.uk> <45D9E46C.4030408@inov.pt> <20070219212347.GA4258@flint.arm.linux.org.uk> <45DC537B.6020108@inov.pt> <20070221230503.GA28156@flint.arm.linux.org.uk> <20070222085413.GB15841@flint.arm.linux.org.uk> <45DDB1A6.8020409@inov.pt> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <45DDB1A6.8020409@inov.pt> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1241 Lines: 32 On Thu, Feb 22, 2007 at 03:07:18PM +0000, Jose Goncalves wrote: > Russell King wrote: > > On Wed, Feb 21, 2007 at 04:34:15PM -0800, Michael K. Edwards wrote: > > > >> Are you using an unpatched gcc 4.1.1? Its optimizer did nasty things > >> to us, at least on an ARM target ... > >> > > > > That's ruled out. Please think about it for a moment - serial_in() > > managed to work correctly most of the time, and then spontaneously > > changes its well-defined ABI behaviour in a way that analysis of the > > asm doesn't allow it to. > > > > I'm using gcc 3.4.6. > But I agree with Russell, if it was such a problem it would hit on the > first iteration of my application and not after 1 day of executing the > same piece of code... One thing you might think about is running memtest86 on the machine for the same kind of time interval, just in case it's something trivial like bad ram. -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: - 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/