From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754022Ab0CBQXn (ORCPT ); Tue, 2 Mar 2010 11:23:43 -0500 Received: from smtp1-g21.free.fr ([212.27.42.1]:42157 "EHLO smtp1-g21.free.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753297Ab0CBQXm (ORCPT ); Tue, 2 Mar 2010 11:23:42 -0500 Message-ID: <1267547013.4b8d3b8596461@imp.free.fr> Date: Tue, 02 Mar 2010 17:23:33 +0100 From: castet.matthieu@free.fr To: Siarhei Liakh Cc: "linux-kernel@vger.kernel.org" Subject: Re: [tip:x86/mm] x86, mm: NX protection for kernel data MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="-MOQ12675470136bbbeeac0829a81a9899786cbaa306e8" User-Agent: Internet Messaging Program (IMP) 3.2.8 X-Originating-IP: 93.1.149.109 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This message is in MIME format. ---MOQ12675470136bbbeeac0829a81a9899786cbaa306e8 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit > At this point I need some help and guidance on how to track down what > exactly happens there, as I am not very familiar with what goes into > .data and why are we trying to execute it. Can't you add debug printk in the fault handler before any exception processing Something like that. Matthieu ---MOQ12675470136bbbeeac0829a81a9899786cbaa306e8 Content-Type: text/x-diff; name="test.diff" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="test.diff" ZGlmZiAtLWdpdCBhL2FyY2gveDg2L21tL2ZhdWx0LmMgYi9hcmNoL3g4Ni9tbS9mYXVsdC5jCmlu ZGV4IGY2Mjc3NzkuLjU3OGJhNTIgMTAwNjQ0Ci0tLSBhL2FyY2gveDg2L21tL2ZhdWx0LmMKKysr IGIvYXJjaC94ODYvbW0vZmF1bHQuYwpAQCAtNjI5LDYgKzYyOSw4IEBAIG5vX2NvbnRleHQoc3Ry dWN0IHB0X3JlZ3MgKnJlZ3MsIHVuc2lnbmVkIGxvbmcgZXJyb3JfY29kZSwKIAl1bnNpZ25lZCBs b25nIGZsYWdzOwogCWludCBzaWc7CiAKKwlpZiAoZXJyb3JfY29kZSAmIFBGX0lOU1RSKQorCQlw cmludGsoImV4ZWMgb24gTlhcbiIpOwogCS8qIEFyZSB3ZSBwcmVwYXJlZCB0byBoYW5kbGUgdGhp cyBrZXJuZWwgZmF1bHQ/ICovCiAJaWYgKGZpeHVwX2V4Y2VwdGlvbihyZWdzKSkKIAkJcmV0dXJu Owo= ---MOQ12675470136bbbeeac0829a81a9899786cbaa306e8--