From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932366AbdLOP0p (ORCPT ); Fri, 15 Dec 2017 10:26:45 -0500 Received: from mx3.molgen.mpg.de ([141.14.17.11]:56856 "EHLO mx1.molgen.mpg.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932262AbdLOP0m (ORCPT ); Fri, 15 Dec 2017 10:26:42 -0500 Subject: Re: [Regression 4.15-rc2] New messages `tpm tpm0: A TPM error (2314) occurred continue selftest` To: Alexander Steffen , Mario Limonciello , Jason Gunthorpe Cc: linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org, rafael.j.wysocki@intel.com, len.brown@intel.com References: <32b0e6c1292f4818825e9e0e9bff4d39@infineon.com> <20171207183743.GB16884@ziepe.ca> <37b47bbcce5d4cf1b1fad32576e501d4@infineon.com> <20171208155641.GA2883@ziepe.ca> <20171208161814.GB2883@ziepe.ca> <3159adc4-4236-c963-a118-500a61f21338@molgen.mpg.de> <10b81a727ba940889095fa4bb29d0863@infineon.com> <5efeaf9e50e54b999efa91c39f311bd9@ausx13mpc120.AMER.DELL.COM> <127aefc5-44e1-7382-2548-5cd4774275b0@molgen.mpg.de> From: Paul Menzel Message-ID: Date: Fri, 15 Dec 2017 16:26:40 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="------------ms020304070509070503020104" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is a cryptographically signed message in MIME format. --------------ms020304070509070503020104 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: quoted-printable Dear Alexander, On 12/15/17 15:54, Alexander.Steffen@infineon.com wrote: [=E2=80=A6] >> the added line breaks to the quoted parts really mess up the citation.= >> Can we please try to use MUAs avoiding that, or fixing that manually? >=20 > Sorry, I'm not sure whether my company has a way for me to avoid using = Outlook ;-) But if there are any configuration changes to make it behave = better, I will gladly apply them. Do you know of any documentation on thi= s? All I found so far either is already applied or was outdated. No idea, lines in quotes should probably not be touch and wrapped. At=20 least not without adding the right quoting level on the next line. > I'll remove some of the less relevant quoted parts, so that this is les= s of an issue. >=20 >>>>>>> To be clear, this issue is not reproducible during every start. (= But >>>>>>> that was the same before.) >> >> I think I found out how to reproduce the issue. Cold start the system >> without the power supply connected. >> >>>>>> Thanks for testing. Now you are in the unlucky situation that your= TPM was >>>>>> probably always broken, but old kernels did not detect that and us= ed it anyway. >> >> Just to clarify, I do not know if the TPM could ever be used. I believ= e >> the module loaded but the user space tools (tpm2_version or so) always= >> returned an error in my tests. >=20 > Interesting. So maybe it is not a bug in your TPM's firmware, but reall= y a single defective TPM? Can you try to figure that out? That is, when u= sing an older kernel in the cold start scenario, can you execute any usef= ul commands on your TPM successfully? ``` $ uname -a Linux Ixpees 4.10.0-42-generic #46~16.04.1-Ubuntu SMP Mon Dec 4 15:57:59 = UTC 2017 x86_64 x86_64 x86_64 GNU/Linux $ more /proc/version Linux version 4.10.0-42-generic (buildd@lgw01-amd64-007) (gcc version=20 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16 =2E04.5) ) #46~16.04.1-Ubuntu SMP Mon Dec 4 15:57:59 UTC 2017 $ dmesg | grep tpm [ 0.999122] tpm_tis MSFT0101:00: 2.0 TPM (device-id 0xFE, rev-id 4) $ sudo tpm_version Tspi_Context_Connect failed: 0x00003011 - layer=3Dtsp, code=3D0011 (17), = Communication failure $ tpm_version --version tpm_version version: 1.3.8 ``` >>>>> Something that Paul can consider is to upgrade the TPM firmware if = it's not >>>>> already upgraded. Since the launch of XPS 9360 there was at least = one TPM >>>>> firmware update issued. It has been posted to LVFS and can be upgr= aded using >>>>> fwupd/fwupdate. >>>>> Note: If your TPM is currently owned you will need to go into BIOS = setup to >>>>> clear it first before upgrading. >>>> >>>> I'm not familiar with the specific TPM in your model, but according = to the >>>> log it is a TPM 2.0, which does not really carry over the owner conc= ept of >>>> a TPM 1.2. Is clearing it still necessary for an upgrade then? >>> >>> Yes it's required for the TPM model/vendor that is used in the XPS mo= del that >>> Paul has. If you try to run the upgrade without clearing it the firm= ware will >>> reject the upgrade. >> >> Mario, thank you for your quick reaction. >> >> [=E2=80=A6] >> >> 1. Can you reproduce this issue too? >> 2. How do I find out, what TPM firmware version is installed? >=20 > If you get the driver loaded, you can ask the TPM (TPM2_GetCapability f= or TPM_PT_FIRMWARE_VERSION_1 and TPM_PT_FIRMWARE_VERSION_2): >=20 > python3 -c 'f=3Dopen("/dev/tpm0", "r+b", buffering=3D0); f.write(b"\x80= \x01\x00\x00\x00\x16\x00\x00\x01z\x00\x00\x00\x06\x00\x00\x01\x0b\x00\x00= \x00\x02"); print(f.readall())' ``` $ sudo python3 Python 3.5.2 (default, Nov 23 2017, 16:37:01) [GCC 5.4.0 20160609] on linux Type "help", "copyright", "credits" or "license" for more information. >>> f=3Dopen("/dev/tpm0", "r+b", buffering=3D0) >>>=20 f.write(b"\x80\x01\x00\x00\x00\x16\x00\x00\x01z\x00\x00\x00\x06\x00\x00\x= 01\x0b\x00\x00\x00\x02") 22 >>> print(f.readall()) b'\x80\x01\x00\x00\x00#\x00\x00\x00\x00\x01\x00\x00\x00\x06\x00\x00\x00\x= 02\x00\x00\x01\x0b\x00\x01\x00\x03\x00\x00\x01\x0c\x00\x00\x00\x01' ``` >> 3. Updating to the firmware 2.4.2 from December 17th, 2017 didn=E2=80= =99t fix >> the issue. >=20 > You've got a firmware from the future? ;-) Uups, right. It=E2=80=99s from December 12th, 2017. ;-) Kind regards, Paul --------------ms020304070509070503020104 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCC EFowggUSMIID+qADAgECAgkA4wvV+K8l2YEwDQYJKoZIhvcNAQELBQAwgYIxCzAJBgNVBAYT AkRFMSswKQYDVQQKDCJULVN5c3RlbXMgRW50ZXJwcmlzZSBTZXJ2aWNlcyBHbWJIMR8wHQYD VQQLDBZULVN5c3RlbXMgVHJ1c3QgQ2VudGVyMSUwIwYDVQQDDBxULVRlbGVTZWMgR2xvYmFs Um9vdCBDbGFzcyAyMB4XDTE2MDIyMjEzMzgyMloXDTMxMDIyMjIzNTk1OVowgZUxCzAJBgNV BAYTAkRFMUUwQwYDVQQKEzxWZXJlaW4genVyIEZvZXJkZXJ1bmcgZWluZXMgRGV1dHNjaGVu IEZvcnNjaHVuZ3NuZXR6ZXMgZS4gVi4xEDAOBgNVBAsTB0RGTi1QS0kxLTArBgNVBAMTJERG Ti1WZXJlaW4gQ2VydGlmaWNhdGlvbiBBdXRob3JpdHkgMjCCASIwDQYJKoZIhvcNAQEBBQAD ggEPADCCAQoCggEBAMtg1/9moUHN0vqHl4pzq5lN6mc5WqFggEcVToyVsuXPztNXS43O+FZs 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