From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932268AbVHHVhd (ORCPT ); Mon, 8 Aug 2005 17:37:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932273AbVHHVhd (ORCPT ); Mon, 8 Aug 2005 17:37:33 -0400 Received: from dbl.q-ag.de ([213.172.117.3]:12160 "EHLO dbl.q-ag.de") by vger.kernel.org with ESMTP id S932268AbVHHVhc (ORCPT ); Mon, 8 Aug 2005 17:37:32 -0400 Message-ID: <42F7D08E.9070508@colorfullife.com> Date: Mon, 08 Aug 2005 23:37:18 +0200 From: Manfred Spraul User-Agent: Mozilla/5.0 (X11; U; Linux i686; fr-FR; rv:1.7.10) Gecko/20050719 Fedora/1.7.10-1.5.1 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Christoph Lameter CC: akpm@osdl.org, linux-kernel@vger.kernel.org Subject: Re: [SLAB] __builtin_return_address use without FRAME_POINTER causes boot failure References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Christoph Lameter wrote: >I kept getting boot failures in the slab allocator. The failure goes >away if one is setting CONFIG_FRAME_POINTER. Seems that >CONFIG_DEBUG_SLAB implies the use of __buildin_return_address() which >needs the framepointer. > > > Very odd. __builtin_return_address(1) needs frame pointers, but slab only uses __builtin_return_addresse(0), which should always work. -- Manfred