From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758956Ab3BTSYo (ORCPT ); Wed, 20 Feb 2013 13:24:44 -0500 Received: from mx1.redhat.com ([209.132.183.28]:28071 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756216Ab3BTSYn (ORCPT ); Wed, 20 Feb 2013 13:24:43 -0500 Date: Wed, 20 Feb 2013 13:24:32 -0500 From: Dave Jones To: Stanislav Kinsbursky Cc: Linux Kernel , Andrew Morton Subject: Re: general protection fault in do_msgrcv [3.8] Message-ID: <20130220182432.GA32377@redhat.com> Mail-Followup-To: Dave Jones , Stanislav Kinsbursky , Linux Kernel , Andrew Morton References: <20130219180441.GA27141@redhat.com> <512487FA.9090102@parallels.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <512487FA.9090102@parallels.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Feb 20, 2013 at 12:23:22PM +0400, Stanislav Kinsbursky wrote: > > Pid: 887, comm: trinity-child2 Not tainted 3.8.0+ #57 Gigabyte Technology Co., Ltd. GA-MA78GM-S2H/GA-MA78GM-S2H > > RIP: 0010:[] [] do_msgrcv+0x22a/0x670 > > ... > > Looks like Stanislav recently changed this code, so problem was likely introduced > > in those changes. > > > > Is it easy to reproduce? Do you use KVM? Only hit it once so far, no KVM > There is a NULL selinux handler bug fix by Stephen Smalley here: > https://lkml.org/lkml/2013/2/6/663 > > But anyway, this bug fix affects only the case, when MSG_COPY flag is set. > > And this is not your case, I suppose? >>From my reading of the traces, I'd say not. It looks like I'm oopsing before we even get to the SELinux hooks. Dave