Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754481AbdCHXTD (ORCPT ); Wed, 8 Mar 2017 18:19:03 -0500 Received: from www62.your-server.de ([213.133.104.62]:40305 "EHLO www62.your-server.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751286AbdCHXTB (ORCPT ); Wed, 8 Mar 2017 18:19:01 -0500 Message-ID: <58C08AFE.2000504@iogearbox.net> Date: Wed, 08 Mar 2017 23:51:42 +0100 From: Daniel Borkmann User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 MIME-Version: 1.0 To: Kees Cook CC: Linus Torvalds , Thomas Gleixner , Ingo Molnar , Peter Anvin , Fengguang Wu , Network Development , LKML , LKP , ast@fb.com, the arch/x86 maintainers , Laura Abbott , "David S. Miller" Subject: Re: [net/bpf] 3051bf36c2 BUG: unable to handle kernel paging request at 0000a7cf References: <20170301125426.l4nf65rx4wahohyl@wfg-t540p.sh.intel.com> <20170302202338.ci6wwb3yzjmdy4n2@wfg-t540p.sh.intel.com> <58B88353.2010508@iogearbox.net> <58C08535.3070000@iogearbox.net> In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Authenticated-Sender: daniel@iogearbox.net Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 580 Lines: 15 On 03/08/2017 11:36 PM, Kees Cook wrote: > On Wed, Mar 8, 2017 at 2:27 PM, Daniel Borkmann wrote: >> [ 28.474232] rodata_test: test data was not read only >> [...] > > In my tests so far, I've never been able to get rodata_test to fail > (Qemu 2.5.0, Ubuntu). I'll retry with your .config and see if I can > recheck under Qemu 2.7.1. Do you see these failures on real hardware? The x86_64 tests on real hardware, and the x86-32 only in the qemu environment with the reproducer script. Haven't tested x86-32 kernel outside of qemu so far. Thanks, Daniel