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Wed, 10 Jul 2019 15:26:02 +0000 From: Joey Lee To: Jiri Kosina CC: Pavel Machek , Matthew Garrett , "jmorris@namei.org" , "linux-security-module@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-api@vger.kernel.org" , Josh Boyer , "David Howells" , Matthew Garrett , "rjw@rjwysocki.net" , "linux-pm@vger.kernel.org" Subject: Re: [PATCH V34 10/29] hibernate: Disable when the kernel is locked down Thread-Topic: [PATCH V34 10/29] hibernate: Disable when the kernel is locked down Thread-Index: AQHVNzPImMFF/5PBvEamjEIg+L0CxQ== Date: Wed, 10 Jul 2019 15:26:02 +0000 Message-ID: <20190710152547.GQ11107@linux-l9pv.suse> References: <20190622000358.19895-1-matthewgarrett@google.com> <20190622000358.19895-11-matthewgarrett@google.com> <20190622175208.GB30317@amd> In-Reply-To: Accept-Language: zh-TW, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: DB3PR0102CA0017.eurprd01.prod.exchangelabs.com (2603:10a6:8::30) To BYAPR18MB2725.namprd18.prod.outlook.com (2603:10b6:a03:103::31) authentication-results: spf=none (sender IP is ) smtp.mailfrom=JLee@suse.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [124.11.22.254] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 07506e7d-26ce-47f0-4cfc-08d7054aeaf2 x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600148)(711020)(4605104)(1401327)(2017052603328)(7193020);SRVR:BYAPR18MB2952; x-ms-traffictypediagnostic: BYAPR18MB2952: x-ms-exchange-purlcount: 1 x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:8882; x-forefront-prvs: 0094E3478A x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(4636009)(346002)(136003)(376002)(39860400002)(366004)(396003)(189003)(199004)(2906002)(14454004)(66446008)(66556008)(4326008)(11346002)(64756008)(446003)(66476007)(66946007)(1076003)(486006)(186003)(86362001)(305945005)(71200400001)(102836004)(478600001)(7416002)(6916009)(76176011)(966005)(229853002)(9686003)(81156014)(6512007)(81166006)(54906003)(6246003)(68736007)(3846002)(6116002)(25786009)(386003)(8936002)(7736002)(476003)(66066001)(36756003)(80792005)(4744005)(5660300002)(6436002)(99286004)(53936002)(6506007)(8676002)(52116002)(316002)(6306002)(71190400001)(6486002)(33656002)(14444005)(26005)(256004);DIR:OUT;SFP:1102;SCL:1;SRVR:BYAPR18MB2952;H:BYAPR18MB2725.namprd18.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A:1; received-spf: None (protection.outlook.com: suse.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: hiKQ1IQsNuUV2S7ta13UgQBfp1hWIIs8SgzgRcq9d651ornEXB/gQNKkRD4WY1Db5cSXNfYVTjSwadtmRYTtCMkxCzzhRFCbOUV+QY4AILGJQb6r9j49g1V7L74001p6DhK0QMzw6287VPnAgtMkGxae6sQW0Nrz78DhuZpu7WqTyUs9GHKEnqNUFQNl4JSZOzI/n5jvq1mS0T4S/HR+yr0tJ3ktT0AyQDE5jtT26lFk7OB899PlFmRxgCYsRu0sVGg2zvkmLgtqqtNBJrPd+5mCGQEs/Ltbz2LQ4ZkCJOFh3di0w/9/GoKvDdcu8WtRL+6coC1qWaBjELWFwcEZh9gHXbQf8xh1FJ6ghLgdO+UHn7Y3kJHlNCVqSp/E23qJz0lrZhc+6mGmNu/39kmRSk95cpLJ2ZddQC2hn2JtXow= Content-Type: text/plain; charset="us-ascii" Content-ID: <570ACDF99ABAD3428E41574A4B38E684@namprd18.prod.outlook.com> Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: 07506e7d-26ce-47f0-4cfc-08d7054aeaf2 X-MS-Exchange-CrossTenant-originalarrivaltime: 10 Jul 2019 15:26:02.5570 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 856b813c-16e5-49a5-85ec-6f081e13b527 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: JLee@suse.com X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR18MB2952 X-OriginatorOrg: suse.com Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, On Mon, Jun 24, 2019 at 03:21:23PM +0200, Jiri Kosina wrote: > On Sat, 22 Jun 2019, Pavel Machek wrote: > > > > There is currently no way to verify the resume image when returning > > > from hibernate. This might compromise the signed modules trust model, > > > so until we can work with signed hibernate images we disable it when the > > > kernel is locked down. > > > > I keep getting these... > > > > IIRC suse has patches to verify the images. > > Yeah, Joey Lee is taking care of those. CCing. > The last time that I sent for hibernation encryption and authentication is here: https://lkml.org/lkml/2019/1/3/281 It needs some big changes after review: - Simplify the design: remove keyring dependency and trampoline. - Encrypted whole snapshot image instead of only data pages. - Using TPM: - Direct use TPM API in hibernation instead of keyring - Localities (suggested by James Bottomley) I am still finding enough time to implement those changes, especial TPM parts. Thanks Joey Lee