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=-1.0 required=3.0 tests=FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS 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 EB948C43387 for ; Wed, 9 Jan 2019 15:03:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C4ABC206BB for ; Wed, 9 Jan 2019 15:03:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732268AbfAIPDV (ORCPT ); Wed, 9 Jan 2019 10:03:21 -0500 Received: from mout.gmx.net ([212.227.17.21]:57105 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732232AbfAIPDT (ORCPT ); Wed, 9 Jan 2019 10:03:19 -0500 Received: from homer.simpson.net ([185.191.218.82]) by mail.gmx.com (mrgmx103 [212.227.17.168]) with ESMTPSA (Nemesis) id 0Ld0E0-1h7olJ03pw-00iBRh; Wed, 09 Jan 2019 16:03:17 +0100 Message-ID: <1547046196.31155.1.camel@gmx.de> Subject: Re: 5.0-rc1 KVM inspired "BUG: Bad page state in process" spew From: Mike Galbraith To: Adam Borowski Cc: kvm , lkml Date: Wed, 09 Jan 2019 16:03:16 +0100 In-Reply-To: <20190109144257.erwh52326ucgc5tw@angband.pl> References: <1547012338.4926.11.camel@gmx.de> <20190109144257.erwh52326ucgc5tw@angband.pl> Content-Type: text/plain; charset="ISO-8859-15" X-Mailer: Evolution 3.26.6 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K1:sZ79JYjLOWKiOVpoWba8MQtnnJMH1ZzfWMn49/cize7DFhuSxCp OmHc/DQcPW4ositk/4mWAHVcevP5ALyBBK3aWFp1PjEMgGPLH2kKPlhZ53zTaJ1O7W8/V8w U6Y6deJYhqPhryjHd2+5KZ9GYLi95JAU7UQzIGnP+49l1uQFc9IRAjNBENFSrGZv6dAQkOK Je730IZaragOOMtBMPLjg== X-UI-Out-Filterresults: notjunk:1;V03:K0:yCK2kCX1Kp4=:joa6/EZQ9CHZToCAfzUQ1T Yk7HCC9f9igkjZf7IQJVFN3bTuiuKEusjzv4tqnHWrv0XgV5hqn/dTuC/W+Raj64/XznpZbed Gx6hJ1pAm2gXQmPPIHoDTp7d0bwqpE1x0exw4c41xJSyQfbqz4tIFO0RgC+gyfrQK4QKDzzfd 6+gVAO1eKJTf5Bfx4EGR9QR8sWsYgvYMyOzpjTURr4raAMm3DU3h1aZDsBN7GuOM0YLxB2SHu mxkl8ZBGJDrkv0RHsnLL2NPebivfDCha7xl8TdagUR4qwFF1s2FP6tl7M9VjNP/7Hya1Jr8i4 rd94AMo+q+7Xsz9LCl/K2xpnLKR5cCd7cpqJaS5Blh7zaGUTu3p39A25Zo+7M3ze/4Kb0nnvL PqQuYZXT77UVxHs2VE+NmPOQ1k6TA47o2OM9m4WNH7AqsbYBGh+Bo1o6Qf93gLNV0tdHtTU9J eHyuW48m7YjxJ5jnoCD+SuDdi7Z4VC75jyrFRZqW3zGnXe4LM34XzXcnq07gSNw/iqFFqZydW JDv1xJI6o6seQKBZFkph9xbldfESRTsjUgNGK/zDnWmj1QXhmgccSDiSchC6uPpD70djt/seL QRWGJDNBzFH8mo8MMaK8a6cqzMvHcE9FlWBYuRcRiuqrHstVkNEgxCnU/Zucti0VUk1hQKAx9 FKt9L+Ho45JX6nA0ZILxVVlnGcu6ZMaXSNGJxwXCcoG1By/YzhHhb44iATi+tXj929N76zNmi /yagtnWwT9aHHrYo+tbzoIKNCDPDntHic9wtLc7c+uI5B4nortQsqDIMvMDCnCByOBXpR+aVu EGmYvuZgnGvh9ftqOzr1BxZNBhAZckyVUDXIgXkzwuxaO2HTJLgs1Z1ZozpUFQN6k4oWSWZMl YaHxFzNL1/5cCXthkYxhtkwZen+X0YlzyFIMddzMXL5g5jCf3z467QwQloZ68n Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2019-01-09 at 15:42 +0100, Adam Borowski wrote: > On Wed, Jan 09, 2019 at 06:38:58AM +0100, Mike Galbraith wrote: > > KVM seems to be busted in master ATM. All I have to do to have host > > start screaming and maybe exploding (if the guest doesn't do so first) > > is to try to install a (obese in this case) kernel over nfs mount of > > the host in a guest. > > > > Kernel producing the spew below is 3bd6e94, config attached. > > I get same, except that the BUGs were preceded by a bunch of warnings, Yeah, I was in too much of a rush... > > homer: # grep BUG: /netconsole.log > > [ 1531.909703] BUG: Bad page state in process X pfn:100491 > > [ 1531.958141] BUG: Bad page state in process systemd-journal pfn:100412 > > [ 1532.662359] BUG: Bad page state in process X pfn:10043f > > [ 1532.664033] BUG: Bad page state in process X pfn:10044d > > [ 1532.686433] BUG: Bad page state in process systemd-journal pfn:1027b0 > > the first one being: > > Jan 9 00:41:22 umbar kernel: [74122.790461] WARNING: CPU: 2 PID: 26769 at arch/x86/kvm/mmu.c:830 mmu_spte_clear_track_bits+0x7e/0x100 ...I also get oodles of those. -Mike