From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.92] helo=mail.sourceforge.net) by sc8-sf-list1-new.sourceforge.net with esmtp (Exim 4.43) id 1HD2Yb-0002Qs-Tp for user-mode-linux-devel@lists.sourceforge.net; Fri, 02 Feb 2007 09:50:43 -0800 Received: from smtp003.mail.ukl.yahoo.com ([217.12.11.34]) by mail.sourceforge.net with smtp (Exim 4.44) id 1HD2YU-0007Ry-C9 for user-mode-linux-devel@lists.sourceforge.net; Fri, 02 Feb 2007 09:50:41 -0800 From: Blaisorblade Date: Fri, 2 Feb 2007 18:48:39 +0100 References: <20070131224504.GA7698@ccure.user-mode-linux.org> In-Reply-To: <20070131224504.GA7698@ccure.user-mode-linux.org> MIME-Version: 1.0 Content-Disposition: inline Message-Id: <200702021848.40114.blaisorblade@yahoo.it> Subject: Re: [uml-devel] [PATCH] x86_64 32-bit ptrace mangles sixth system call argument List-Id: The user-mode Linux development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: user-mode-linux-devel-bounces@lists.sourceforge.net Errors-To: user-mode-linux-devel-bounces@lists.sourceforge.net To: Jeff Dike , user-mode-linux-devel@lists.sourceforge.net On Wednesday 31 January 2007 23:45, Jeff Dike wrote: > [ This is -mm only until Andi acks it ] > > The 32-bit sysenter entry point mangles the sixth system call argument > for both 32-bit and 64-bit ptrace. In both cases, strace shows the > frame pointer (ebp) as the sixth argument. > > Here's a snippet of a 64-bit strace of a 32-bit test program which > calls mmap through sysenter: Is this a recent regression or did this always happen? Is this the bug diagnosed by Bodo Stroesser time ago, or only it looks similar? I recall vaguely that in that bug RCX was corrupted. And what is the impact on UML (Bodo said his bug would affect SKAS behaviour)? Above all, how can UML run in SKAS0 mode with this bug (if it can)? -- Inform me of my mistakes, so I can add them to my list! Paolo Giarrusso, aka Blaisorblade http://www.user-mode-linux.org/~blaisorblade Chiacchiera con i tuoi amici in tempo reale! http://it.yahoo.com/mail_it/foot/*http://it.messenger.yahoo.com ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel