Conversation
oleksandr@natalenko.name

Oleksandr Natalenko, MSE verified

kernel: tpm tpm0: tpm2_load_context: failed with a TPM error 0x0161

@jarkko Any idea what I'm looking at in v6.16 please? This is Lenovo T460s, and I don't remember seeing such an error in v6.15.

This also makes TPM-related systemd services fail during boot time: https://paste.voidband.net/wucdUTXK.log

1
0
0
jarkko

Jarkko Sakkinen

Reply to @oleksandr@natalenko.name
@oleksandr It's interesting because I don't recognize by eye 0x161 as TPM error code (I have to check this tho formally). I will take a look at it later this week, just my initial guess.

RT @jejb
1
0
0
oleksandr@natalenko.name

Oleksandr Natalenko, MSE verified

Reply to @jarkko

@jarkko This puzzles me somewhat because 0x0161 is TPM2_CC_CONTEXT_LOAD, which is not an error code. Might be a co-incidence though.

@jejb

1
0
0
jarkko

Jarkko Sakkinen

Reply to @oleksandr@natalenko.name
@oleksandr @jejb lol that is true :-) good catch (i was intuitively thinking that it is leaking length from some return value).
1
0
0
jejb@mastodon.online

James Bottomley

Reply to @jarkko

@jarkko @oleksandr sorry, wrong jejb. However, it looks to me like tpm_transmit() returned success but the driver didn't replace the command with the response, so you get the command code back as the response code. That probably indicates a bug in the driver ... which tpm2 driver are you using?

2
0
0
oleksandr@natalenko.name

Oleksandr Natalenko, MSE verified

Reply to @jejb@mastodon.online

@jejb How do I check which tpm2 driver is in use? lsmod | grep tpm doesn't show any. Also, the error seems to be spurious, on next reboot everything was OK.

@jarkko

1
0
0
jejb@mastodon.online

James Bottomley

Reply to @oleksandr@natalenko.name

@oleksandr @jarkko

ls -l /sys/class/tpm/tpm0/device/driver

1
0
0
oleksandr@natalenko.name

Oleksandr Natalenko, MSE verified

Reply to @jejb@mastodon.online

@jejb

lrwxrwxrwx 1 root root 0 Aug  6 16:43 /sys/class/tpm/tpm0/device/driver -> ../../../../bus/acpi/drivers/tpm_crb

@jarkko

0
0
0
jarkko

Jarkko Sakkinen

Reply to @jejb@mastodon.online
@jejb @oleksandr it's possible buf since given how tpm_transmit() works i don't think that is like behaviour. it looks more like if tpm_transmit() was not invoked at all.
0
0
0
About social.kernel.org

Terms of service

  1. Please do not use this service in violation of the Linux Kernel Code of Conduct. Doing so will result in your account suspension with the referral of the matter to the CoC committee.

  2. "Repeating"/"boosting" someone else's status on this platform will be treated as endorsement and will fall under rule #1.

  3. You are encouraged to use this platform to promote your work on the Linux Kernel, but there is no restriction on permitted topics (with the exception of anything covered by #1 above).

  4. There is no requirement to post in English, but it should be considered the primary language of communication on this platform.

Privacy notice

The admins of this service have access to all posted statuses. They aren't looking, but if it's something they shouldn't know about, then you should not post it on this platform.

Please see the Linux Foundation Privacy Policy, which applies to this platform as well.

Getting your own account

If you would like an account on this instance, please check that the following applies to you:

  • You are listed in MAINTAINERS or CREDITS

  • OR: You have a kernel.org account or email address

  • OR: You have a long and established history of involvement with the Linux Kernel

If the above is true and you agree with the Terms of Service and Privacy Notice listed above, please use these instructions to request an account: