** Description changed: - [ 0.801334] tpm_tis MSFT0101:00: 2.0 TPM (device-id 0xFE, rev-id 4) - [ 0.812132] tpm tpm0: A TPM error (2314) occurred continue selftest - [ 0.843629] tpm tpm0: A TPM error (2314) occurred continue selftest - [ 0.895424] tpm tpm0: A TPM error (2314) occurred continue selftest - [ 0.987230] tpm tpm0: A TPM error (2314) occurred continue selftest - [ 1.159026] tpm tpm0: A TPM error (2314) occurred continue selftest - [ 1.490819] tpm tpm0: A TPM error (2314) occurred continue selftest - [ 2.142530] tpm tpm0: A TPM error (2314) occurred continue selftest - [ 3.423100] tpm tpm0: TPM self test failed - [ 3.456304] ima: No TPM chip found, activating TPM-bypass! (rc=-19) + [Impact] + On an 18.04 LTS system with a TPM, the TPM will fail intermittently on cold boots. The problem seems to be that the TPM gets into a state where the partial self-test doesn't return TPM_RC_SUCCESS (meaning all tests have run to completion), but instead returns TPM_RC_TESTING (meaning some tests are still running in the background). A reboot can sometimes restore TPM functionality. + + This bug was originally reported on a Dell XPS 13, but has also recently + been reported on a Dell Edge Gateway 3000. + + The bug has been confirmed to be fixed in the current development + release (19.04/Cosmic). + + [Test Case] + Cold boot a Dell XPS 13 or Dell Edge Gateway 3000 running 18.04 LTS Desktop or Server and grep for the following error log message: + + "tpm tpm0: A TPM error (2314) occurred continue selftest" + + Any attempts at using the TPM via tpm2-tss libraries or tpm2-tools + should produce errors. + + As this bug is due to a race condition, ideally this test case would be + run multiple times (20+ cold boots). + + Once the patch is installed the following error message may still be + present in the syslog, however attempts to use the TPM should work: + + "tpm tpm0: A TPM error (2314) occurred attempting the self test" + + [Regression Potential] + The chance of regression is low, as this patch was written by a well respected kernel developer with deep TPM experience. The patch is also being cherry-picked from the upstream stable and LTS kernels, and as mentioned, has already landed in Disco. + + [Original Description] + After updating a Dell XPS 13 to 18.04 LTS, the TPM started to intermittently fail on cold boot. The following log messages could be observed in syslog: + + [ 0.801334] tpm_tis MSFT0101:00: 2.0 TPM (device-id 0xFE, rev-id 4) + [ 0.812132] tpm tpm0: A TPM error (2314) occurred continue selftest + [ 0.843629] tpm tpm0: A TPM error (2314) occurred continue selftest + [ 0.895424] tpm tpm0: A TPM error (2314) occurred continue selftest + [ 0.987230] tpm tpm0: A TPM error (2314) occurred continue selftest + [ 1.159026] tpm tpm0: A TPM error (2314) occurred continue selftest + [ 1.490819] tpm tpm0: A TPM error (2314) occurred continue selftest + [ 2.142530] tpm tpm0: A TPM error (2314) occurred continue selftest + [ 3.423100] tpm tpm0: TPM self test failed + [ 3.456304] ima: No TPM chip found, activating TPM-bypass! (rc=-19) Discussion https://lkml.org/lkml/2017/12/6/284 Fix https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/char/tpm/tpm2-cmd.c?id=2be8ffed093b91536d52b5cd2c99b52f605c9ba6 - - ProblemType: Bug - DistroRelease: Ubuntu 18.04 - Package: linux-image-generic 4.15.0.13.14 - ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10 - Uname: Linux 4.15.0-13-generic x86_64 - ApportVersion: 2.20.9-0ubuntu2 - Architecture: amd64 - AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC0: baz 2268 F.... pulseaudio - CurrentDesktop: XFCE - Date: Tue Apr 10 11:41:57 2018 - EcryptfsInUse: Yes - HibernationDevice: RESUME=/dev/mapper/cryptswap1 - InstallationDate: Installed on 2018-03-01 (39 days ago) - InstallationMedia: Xubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180301) - MachineType: Dell Inc. XPS 13 9360 - ProcFB: 0 inteldrmfb - ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-13-generic root=/dev/mapper/system-root ro quiet splash crashkernel=384M-:128M vt.handoff=1 - RelatedPackageVersions: - linux-restricted-modules-4.15.0-13-generic N/A - linux-backports-modules-4.15.0-13-generic N/A - linux-firmware 1.173 - SourcePackage: linux - UpgradeStatus: No upgrade log present (probably fresh install) - dmi.bios.date: 01/25/2018 - dmi.bios.vendor: Dell Inc. - dmi.bios.version: 2.5.1 - dmi.board.name: 02PG84 - dmi.board.vendor: Dell Inc. - dmi.board.version: A00 - dmi.chassis.type: 9 - dmi.chassis.vendor: Dell Inc. - dmi.modalias: dmi:bvnDellInc.:bvr2.5.1:bd01/25/2018:svnDellInc.:pnXPS139360:pvr:rvnDellInc.:rn02PG84:rvrA00:cvnDellInc.:ct9:cvr: - dmi.product.family: XPS - dmi.product.name: XPS 13 9360 - dmi.sys.vendor: Dell Inc.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1762672 Title: TPM intermittently fails after cold-boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1762672/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
