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

[Paul Menzel <pmenzel@molgen.mpg.de>]

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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, that 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’t see the TPM error
>> messages in the output – 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 running 
`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        Tpm2Tabl 
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 selftest
[    1.156645] tpm tpm0: A TPM error (2314) occurred continue selftest
[    1.208053] tpm tpm0: A TPM error (2314) occurred continue selftest
[    1.299640] tpm tpm0: A TPM error (2314) occurred continue selftest
[    1.471223] tpm tpm0: A TPM error (2314) occurred continue selftest
[    1.802819] tpm tpm0: A TPM error (2314) occurred continue selftest
[    2.454320] tpm tpm0: A TPM error (2314) occurred continue selftest
[    3.734808] tpm tpm0: TPM self test failed
[    3.759675] ima: No TPM chip found, activating TPM-bypass! (rc=-19)
```


Kind regards,

Paul


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