From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756008AbYEZVnL (ORCPT ); Mon, 26 May 2008 17:43:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754983AbYEZVm5 (ORCPT ); Mon, 26 May 2008 17:42:57 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:43136 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754330AbYEZVm4 (ORCPT ); Mon, 26 May 2008 17:42:56 -0400 Date: Mon, 26 May 2008 14:42:37 -0700 (PDT) From: Linus Torvalds To: Jesper Krogh cc: Linux Kernel Mailing List , Carl-Daniel Hailfinger , David Woodhouse Subject: Re: Linux 2.6.26-rc4 In-Reply-To: <483B2A9B.4050007@krogh.cc> Message-ID: References: <483B2A9B.4050007@krogh.cc> User-Agent: Alpine 1.10 (LFD 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 26 May 2008, Jesper Krogh wrote: > > I did get this one (which I didn't on 2.6.25.2) > > [42949399.810959] ck804xrom ck804xrom_init_one(): Unable to register resource > 0x0000000000000000-0x00000000ffffffff - kernel bug? Something is trying to register a 4GB resource. That sounds unlikely (possible on a 64-bit PCI setup, but I think it's more likely to be some overflow of 0 in "unsigned int"). In fact, this seems to be due to some driver bug. It looks like we have window->size = 0xffffffffUL - window->phys + 1UL; and in order for window->size to be 0x100000000, that means that window->phys has to be 0. Which looks impossible, or at least like ent->driver_data is neither DEV_CK804 nor DEV_MCP55. Very odd. The warning: > [42949399.979924] WARNING: at arch/x86/mm/ioremap.c:159 __ioremap_caller+0x299/0x330() is then just a result of the driver blindly continuing and trying to "ioremap()" the resource even though it's bogus and the resource allocation failed. In other words, that driver init routine is really bad about error handling. Carl-Daniel? David? Linus