From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.11] helo=sc8-sf-mx1.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1Ak1Rk-00073d-8b for user-mode-linux-devel@lists.sourceforge.net; Fri, 23 Jan 2004 05:34:04 -0800 Received: from [12.177.129.25] (helo=ccure.user-mode-linux.org) by sc8-sf-mx1.sourceforge.net with esmtp (TLSv1:DES-CBC3-SHA:168) (Exim 4.30) id 1Ak1Rj-0002TS-O7 for user-mode-linux-devel@lists.sourceforge.net; Fri, 23 Jan 2004 05:34:03 -0800 From: Jeff Dike Message-ID: <20040123135647.GA6768@ccure.user-mode-linux.org> References: <20040120191706.GA32711@elte.hu> <20040120194328.GA1518@elte.hu> <20040120200105.GA2289@elte.hu> <20040122162139.GA28167@elte.hu> <20040123093541.GA21763@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040123093541.GA21763@elte.hu> Subject: [uml-devel] Re: [patch] uml fixes, 2.6.1-mm5-A2 Sender: user-mode-linux-devel-admin@lists.sourceforge.net Errors-To: user-mode-linux-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: The user-mode Linux development list List-Post: List-Help: List-Subscribe: , List-Archive: Date: Fri, 23 Jan 2004 08:56:47 -0500 To: Ingo Molnar Cc: user-mode-linux-devel@lists.sourceforge.net On Fri, Jan 23, 2004 at 10:35:41AM +0100, Ingo Molnar wrote: > hm, there's this code in arch/um/sys-i386/bugs.c:arch_handle_signal(): > > ip = UPT_IP(regs); > if((*((char *) ip) != 0x0f) || ((*((char *) (ip + 1)) & 0xf0) != 0x40)) > return(0); > > we are running in the UML kernel context here. Is the dereferencing of > IP safe? No, it's not. There needs to be a copy_from_user in there. Jeff ------------------------------------------------------- The SF.Net email is sponsored by EclipseCon 2004 Premiere Conference on Open Tools Development and Integration See the breadth of Eclipse activity. February 3-5 in Anaheim, CA. http://www.eclipsecon.org/osdn _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel