Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756991Ab2HTPNt (ORCPT ); Mon, 20 Aug 2012 11:13:49 -0400 Received: from smtp-outbound-2.vmware.com ([208.91.2.13]:52320 "EHLO smtp-outbound-2.vmware.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756671Ab2HTPNq (ORCPT ); Mon, 20 Aug 2012 11:13:46 -0400 X-Greylist: delayed 560 seconds by postgrey-1.27 at vger.kernel.org; Mon, 20 Aug 2012 11:13:46 EDT Date: Mon, 20 Aug 2012 08:04:05 -0700 (PDT) From: Jakob Bornecrantz To: Alan Cox Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Message-ID: <790319256.19256264.1345475045195.JavaMail.root@vmware.com> In-Reply-To: <20120820144438.6255.39723.stgit@localhost.localdomain> Subject: Re: [PATCH] drm: stop vmgfx driver explosion MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Originating-IP: [85.225.38.204] X-Mailer: Zimbra 7.2.0_GA_2669 (ZimbraWebClient - GC18 (Linux)/7.2.0_GA_2669) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 876 Lines: 27 ----- Original Message ----- > From: Alan Cox > > If you do a page flip with no flags set then event is NULL. If event > is NULL then the vmw_gfx driver likes to go digging into NULL and > extracts NULL->base.file_priv. > > On a modern kernel with NULL mapping protection it's just another > oops, without it there are some "intriguing" possibilities. > > What it should do is an open question but that for the driver owners > to sort out. > > Signed-off-by: Alan Cox Thanks Alan! Reviewed-by: Jakob Bornecrantz I think CC stable is in order. Cheers, Jakob. -- 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/