Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752748AbZGLH56 (ORCPT ); Sun, 12 Jul 2009 03:57:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751344AbZGLH5t (ORCPT ); Sun, 12 Jul 2009 03:57:49 -0400 Received: from relay.atmel.no ([80.232.32.139]:56602 "EHLO relay.atmel.no" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751339AbZGLH5t (ORCPT ); Sun, 12 Jul 2009 03:57:49 -0400 Date: Sun, 12 Jul 2009 09:57:31 +0200 From: Haavard Skinnemoen To: Hugh Dickins Cc: Guennadi Liakhovetski , linux-mm@kvack.org, kernel@avr32linux.org, linux-kernel@vger.kernel.org Subject: Re: [BUG 2.6.30] Bad page map in process Message-ID: <20090712095731.3090ef56@siona> In-Reply-To: References: X-Mailer: Claws Mail 3.7.2 (GTK+ 2.17.2; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 991 Lines: 24 On Fri, 10 Jul 2009 19:34:06 +0100 (BST) Hugh Dickins wrote: > I've not looked up avr32 pte layout, is 13f26ed4 good or bad? > I hope avr32 people can tell more about the likely cause. It looks OK for a user mapping, assuming you have at least 64MB of SDRAM (the SDRAM starts at 0x10000000) -- all the normal userspace flags are set and all the kernel-only flags are unset. It's marked as executable, so it could be that the segfault was caused by the CPU executing the wrong code. The virtual address 0x4377f876 is a bit higher than what you normally see on avr32 systems, but there's not necessarily anything wrong with it -- userspace goes up to 0x80000000. Btw, is preempt enabled when you see this? Haavard -- 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/