From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755371AbeEHOPH (ORCPT ); Tue, 8 May 2018 10:15:07 -0400 Received: from mga11.intel.com ([192.55.52.93]:22312 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752252AbeEHOPG (ORCPT ); Tue, 8 May 2018 10:15:06 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,378,1520924400"; d="scan'208";a="47651433" Subject: Re: Problem with global pages changeset and kvm To: Thadeu Lima de Souza Cascardo , linux-kernel@vger.kernel.org References: <20180508093723.GA4529@calabresa> From: Dave Hansen Openpgp: preference=signencrypt Message-ID: <137272d9-9c30-3b28-0903-07add5e2036b@linux.intel.com> Date: Tue, 8 May 2018 07:15:06 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0 MIME-Version: 1.0 In-Reply-To: <20180508093723.GA4529@calabresa> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Thanks for the excellent bug report! On 05/08/2018 02:37 AM, Thadeu Lima de Souza Cascardo wrote: > 2) The bad address is next to do_syscall_64 on the host. So a host address leaked into a guest oops? We should bring the KVM folks into this and probably also need to widen the cc list quite a bit. Can you boot the guest at all?