From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_NEOMUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DE90CC4646D for ; Fri, 10 Aug 2018 07:30:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A0D252089F for ; Fri, 10 Aug 2018 07:30:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A0D252089F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727745AbeHJJ6z (ORCPT ); Fri, 10 Aug 2018 05:58:55 -0400 Received: from mx2.suse.de ([195.135.220.15]:45774 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727538AbeHJJ6z (ORCPT ); Fri, 10 Aug 2018 05:58:55 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id E871FAF76; Fri, 10 Aug 2018 07:30:16 +0000 (UTC) Date: Fri, 10 Aug 2018 09:30:16 +0200 From: Joerg Roedel To: kernel test robot Cc: LKP , linux-kernel@vger.kernel.org, Thomas Gleixner Subject: Re: a13c600e15 ("x86/mm/pti: Move user W+X check into .."): WARNING: CPU: 0 PID: 1 at arch/x86/mm/dump_pagetables.c:283 note_page Message-ID: <20180810073016.fn7wrkkdm5p7zv53@suse.de> References: <5b6cc146.lVmfvLKHKgZxC5d8%lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5b6cc146.lVmfvLKHKgZxC5d8%lkp@intel.com> User-Agent: NeoMutt/20170421 (1.8.2) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Aug 10, 2018 at 06:33:42AM +0800, kernel test robot wrote: > [ 9.635329] x86/mm: Checking user space page tables > [ 9.636271] ------------[ cut here ]------------ > [ 9.637045] x86/mm: Found insecure W+X mapping at address (ptrval)/0xffc01000 > [ 9.638228] WARNING: CPU: 0 PID: 1 at arch/x86/mm/dump_pagetables.c:283 note_page+0x66b/0x870 Hmm, weird, this warning triggers for 32-bit non-pae. There is no NX-bit in this mode, so the check shouldn't happen there. I'll investigate. Joerg