From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756115AbdLVOI0 (ORCPT ); Fri, 22 Dec 2017 09:08:26 -0500 Received: from mx3.molgen.mpg.de ([141.14.17.11]:36794 "EHLO mx1.molgen.mpg.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752722AbdLVOIW (ORCPT ); Fri, 22 Dec 2017 09:08:22 -0500 Subject: Re: [Regression 4.15-rc2] New messages `tpm tpm0: A TPM error (2314) occurred continue selftest` To: Alexander Steffen , Mimi Zohar , Jason Gunthorpe Cc: linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org, Mario Limonciello , Thorsten Leemhuis References: <32b0e6c1292f4818825e9e0e9bff4d39@infineon.com> <20171207183743.GB16884@ziepe.ca> <37b47bbcce5d4cf1b1fad32576e501d4@infineon.com> <20171208155641.GA2883@ziepe.ca> <20171208161814.GB2883@ziepe.ca> <1513863360.5221.53.camel@linux.vnet.ibm.com> <6d1441dad4bd41f3a680eac850e099e5@infineon.com> From: Paul Menzel Message-ID: Date: Fri, 22 Dec 2017 15:08:19 +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: <6d1441dad4bd41f3a680eac850e099e5@infineon.com> Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="------------ms000908010103070704060004" 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. --------------ms000908010103070704060004 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: quoted-printable Dear Alexander, dear Mimi, On 12/22/17 15:00, Alexander.Steffen@infineon.com wrote: >> On Mon, 2017-12-11 at 13:54 +0100, Paul Menzel wrote: >>> Dear Jason, >>> >>> >>> On 12/08/17 17:18, Jason Gunthorpe wrote: >>>> On Fri, Dec 08, 2017 at 05:07:39PM +0100, Paul Menzel wrote: >>>> >>>>> I have no access to the system right now, but want to point out, th= at the >>>>> log was created by `journactl -k`, so I do not know if that messes = with >> the >>>>> time stamps. I checked the output of `dmesg` but didn=E2=80=99t see= the TPM >> error >>>>> messages in the output =E2=80=93 only `tpm_tis MSFT0101:00: 2.0 TPM= (device-id >> 0xFE, >>>>> rev-id 4)`. Do I need to pass a different error message to `dmesg`?= >>>> >>>> It is a good question, I don't know.. If your kernel isn't setup to >>>> timestamp messages then the journalstamp will certainly be garbage. >>>> >>>> No idea why you wouldn't see the messages in dmesg, if they are not = in >>>> dmesg they couldn't get into the journal >>> >>> It looks like I was running an older Linux kernel version, when runni= ng >>> `dmesg`. Sorry for the noise. Here are the messages with the Linux >>> kernel time stamps, showing that the delays work correctly. >>> >>> ``` >>> $ uname -a >>> Linux Ixpees 4.15.0-041500rc2-generic #201712031230 SMP Sun Dec 3 >>> 17:32:03 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux >>> $ sudo dmesg | grep TPM >>> [ 0.000000] ACPI: TPM2 0x000000006F332168 000034 (v03 Tpm2T= abl >>> 00000001 AMI 00000000) >>> [ 1.114355] tpm_tis MSFT0101:00: 2.0 TPM (device-id 0xFE, rev-id 4= ) >>> [ 1.125250] tpm tpm0: A TPM error (2314) occurred continue selftes= t >>> [ 1.156645] tpm tpm0: A TPM error (2314) occurred continue selftes= t >>> [ 1.208053] tpm tpm0: A TPM error (2314) occurred continue selftes= t >>> [ 1.299640] tpm tpm0: A TPM error (2314) occurred continue selftes= t >>> [ 1.471223] tpm tpm0: A TPM error (2314) occurred continue selftes= t >>> [ 1.802819] tpm tpm0: A TPM error (2314) occurred continue selftes= t >>> [ 2.454320] tpm tpm0: A TPM error (2314) occurred continue selftes= t >>> [ 3.734808] tpm tpm0: TPM self test failed >>> [ 3.759675] ima: No TPM chip found, activating TPM-bypass! (rc=3D-= 19) >>> ``` >> >> I've sort of been following this thread, but just want to make sure >> that once the self test is/was fixed, that you aren't seeing the IMA >> message. >> >> Assuming this is fixed, could someone provide the commit that fixes >> it? >=20 > I don't think we've found a solution yet. Correct, it=E2=80=99s not fixed yet to my knowledge. > There might be a firmware upgrade that changes that TPM's behavior. Indeed, but I am unable to update without loosing the support from Dell. = Maybe some Dell XPS 13 9630 user is able to test the TPM functionality=20 over the holidays. > Or maybe my latest patch helps? https://patchwork.kernel.org/patch/1013= 0535/ I=E2=80=99ll only have access to the device in the next year. Kind regards, Paul --------------ms000908010103070704060004 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 FVV2B+pG/cgDRWM+cNSrVICxI5y+NyipCf8FXRgPxJiZN7Mg9mZ4F4fCnQ7MSjLnFp2uDo0p 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