Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751621AbWJWGut (ORCPT ); Mon, 23 Oct 2006 02:50:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751623AbWJWGus (ORCPT ); Mon, 23 Oct 2006 02:50:48 -0400 Received: from adsl-ull-137-166.41-151.net24.it ([151.41.166.137]:55847 "EHLO zeus.abinetworks.biz") by vger.kernel.org with ESMTP id S1751621AbWJWGus (ORCPT ); Mon, 23 Oct 2006 02:50:48 -0400 Message-ID: <453C65AC.6050109@abinetworks.biz> Date: Mon, 23 Oct 2006 08:48:12 +0200 From: Gianluca Alberici User-Agent: Mozilla Thunderbird 0.8 (X11/20041022) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Giridhar Pemmasani CC: Chase Venters , linux-kernel@vger.kernel.org Subject: Re: incorrect taint of ndiswrapper References: <20061023064114.49794.qmail@web32403.mail.mud.yahoo.com> In-Reply-To: <20061023064114.49794.qmail@web32403.mail.mud.yahoo.com> 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 Content-Length: 2582 Lines: 90 Hi again, tainting apart, do you get to load ndiswrapper ? On what kernel exactly ? I cant on rc2-mm2 Thanks Gianluca Giridhar Pemmasani wrote: >--- Chase Venters wrote: > > > >>On Monday 23 October 2006 00:40, Giridhar Pemmasani wrote: >> >> >>>It seems that the kernel module loader taints ndiswrapper module as >>>proprietary, but it is not - it is fully GPL: see >>>http://directory.fsf.org/sysadmin/hookup/ndiswrapper.html >>> >>> >>Indeed. 'ndiswrapper' is intentionally tainted by kernel/module.c because >>it >>is used to load and run unknown binary / proprietary code in kernel-space. >>If >>this unknown binary / proprietary code were to contain a bug (which all >>code >>of that complexity tends to), it might write to memory it doesn't own, or >>coerce a device to do so on its behalf, making a kernel crash dump analysis >> >>into a wild goose chase (hence the reason for kernel taint). >> >> > >Yes, I agree on the purpose of tainting the kernel. > > > >>>Note that when a driver is loaded, ndiswrapper does taint the kernel (to >>> >>> >>be >> >> >>>more accurate, it should check if the driver being loaded is GPL or not, >>>but that is not done). >>> >>> >>Are you saying ndiswrapper voluntarily calls add_taint() whenever it loads >>an >>NDIS driver? >> >> > >Exactly - the loader within ndiswrapper taints kernel versions 2.6.10 and >newer (older kernels don't have a way of tainting the kernel). The code is in >loader.c in ndiswrapper. > > > >>Are there even any examples of GPL-licensed NDIS drivers? >> >> > >I don't remember off hand, but sometime back there was discussion on related >topic of weather ndiswrapper should be in debian-main or not, and someone >pointed out a GPL ndis driver. (BTW, after much discussion on debian devel >list, the developers agreed that ndiswrapper belongs in debian-main.) > >Giri > >__________________________________________________ >Do You Yahoo!? >Tired of spam? Yahoo! Mail has the best spam protection around >http://mail.yahoo.com >- >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/ > > - 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/