Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262833AbUJ1Ivi (ORCPT ); Thu, 28 Oct 2004 04:51:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262836AbUJ1Ivf (ORCPT ); Thu, 28 Oct 2004 04:51:35 -0400 Received: from 168.imtp.Ilyichevsk.Odessa.UA ([195.66.192.168]:26892 "HELO port.imtp.ilyichevsk.odessa.ua") by vger.kernel.org with SMTP id S262832AbUJ1Iuq (ORCPT ); Thu, 28 Oct 2004 04:50:46 -0400 From: Denis Vlasenko To: Andi Kleen , Sorav Bansal Subject: Re: BUG REPORT: User/Kernel Pointer bug in sys_poll Date: Thu, 28 Oct 2004 11:50:32 +0300 User-Agent: KMail/1.5.4 Cc: linux-kernel@vger.kernel.org References: <20041028052218.52478.qmail@web50207.mail.yahoo.com.suse.lists.linux.kernel> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="koi8-r" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200410281150.32412.vda@port.imtp.ilyichevsk.odessa.ua> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 998 Lines: 26 On Thursday 28 October 2004 09:32, Andi Kleen wrote: > Sorav Bansal writes: > > > Older x86 architectures (386 and before) allow the kernel to write to any > > user location regardless of the write-protect bits. > > Actually it's only some early steppings of 386 and Linux never ran on > a 286 or earlier. I think the best would be to just ignore it, the affected > user base is very likely zero or very near it. I suspect the > probability of one of these machines still used as a multiuser > machine is very definitely nil. People ran Linux on 8086 (DragonLinux,ELKS iirc). I admire their level of madness, but, really, it is not useful to spend time on such things. My personal bottom line of supported hw is 486. -- vda - 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/