Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262405AbVAVByc (ORCPT ); Fri, 21 Jan 2005 20:54:32 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262419AbVAVByc (ORCPT ); Fri, 21 Jan 2005 20:54:32 -0500 Received: from news.suse.de ([195.135.220.2]:21219 "EHLO Cantor.suse.de") by vger.kernel.org with ESMTP id S262405AbVAVByb (ORCPT ); Fri, 21 Jan 2005 20:54:31 -0500 Date: Sat, 22 Jan 2005 02:54:21 +0100 From: Andi Kleen To: Petr Vandrovec Cc: Eric Dumazet , Andi Kleen , linux-kernel@vger.kernel.org, Chris Bruner , Andrew Morton , Linus Torvalds , Matt Domsch Subject: Re: Something very strange on x86_64 2.6.X kernels Message-ID: <20050122015421.GA27060@wotan.suse.de> References: <20050119231322.GA2287@lk8rp.mail.xeon.eu.org> <20050120162807.GA3174@stusta.de> <20050120164829.GG450@wotan.suse.de> <41F01A50.1040109@cosmosbay.com> <20050121162601.GA8469@vana.vc.cvut.cz> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050121162601.GA8469@vana.vc.cvut.cz> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 836 Lines: 22 On Fri, Jan 21, 2005 at 05:26:01PM +0100, Petr Vandrovec wrote: > On Thu, Jan 20, 2005 at 09:53:36PM +0100, Eric Dumazet wrote: > > > > Examining linux sources, I found that 0xffffe000 is 'special' (ia 32 > > vsyscall) and 0xffffe600 is about sigreturn subsection of this special area. > > > > Is it possible some vm trick just kicks in and corrupts my true 64bits > > program ? > > Maybe I already missed answer, but try patch below. It is definitely bad > to mark syscall page as global one... Patch looks good thanks. Ugh, what a stupid bug. I applied the patch to my tree. -Andi - 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/