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[Regression 4.15-rc2] New messages `tpm tpm0: A TPM error (2314) occurred continue selftest`




Dear Linux folks,


With Linux 4.15-rc2 built by the Ubuntu Kernel Team, the error messages below are shown by the Linux kernel. These are new.

```
Dez 06 13:22:24 Ixpees kernel: microcode: microcode updated early to revision 0x62, date = 2017-04-27 Dez 06 13:22:24 Ixpees kernel: Linux version 4.15.0-041500rc2-generic (kernel@gloin) (gcc version 7.2.0 (Ubuntu 7.2.0-8ubuntu3)) #201712031230 SMP Sun Dec 3 17:32:03 UTC 2017 Dez 06 13:22:24 Ixpees kernel: Command line: BOOT_IMAGE=/vmlinuz-4.15.0-041500rc2-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
Dez 06 13:22:24 Ixpees kernel: KERNEL supported cpus:
Dez 06 13:22:24 Ixpees kernel:   Intel GenuineIntel
Dez 06 13:22:24 Ixpees kernel:   AMD AuthenticAMD
Dez 06 13:22:24 Ixpees kernel:   Centaur CentaurHauls
Dez 06 13:22:24 Ixpees kernel: x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers' Dez 06 13:22:24 Ixpees kernel: x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
[…]
Dez 06 13:22:24 Ixpees kernel: tpm_tis MSFT0101:00: 2.0 TPM (device-id 0xFE, rev-id 4) Dez 06 13:22:24 Ixpees kernel: tpm tpm0: A TPM error (2314) occurred continue selftest Dez 06 13:22:24 Ixpees kernel: tpm tpm0: A TPM error (2314) occurred continue selftest Dez 06 13:22:24 Ixpees kernel: tpm tpm0: A TPM error (2314) occurred continue selftest Dez 06 13:22:24 Ixpees kernel: tpm tpm0: A TPM error (2314) occurred continue selftest Dez 06 13:22:24 Ixpees kernel: tpm tpm0: A TPM error (2314) occurred continue selftest Dez 06 13:22:24 Ixpees kernel: tpm tpm0: A TPM error (2314) occurred continue selftest Dez 06 13:22:24 Ixpees kernel: tpm tpm0: A TPM error (2314) occurred continue selftest
Dez 06 13:22:24 Ixpees kernel: tpm tpm0: TPM self test failed
```

Any idea what to do about those? If these are intentional, it’d be great to give some hint to the user, what effect this has.


Kind regards,

Paul

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