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tpm_crb MSFT0101:00: [Firmware Bug]: F28

asked 2018-07-07 09:15:11 -0600

can gravatar image

updated 2018-07-08 02:03:03 -0600

genodeftest gravatar image

Everutime system boots I get the following message:

tpm_crb MSFT0101:00: [Firmware Bug]: ACPI region does not cover the entire command/response buffer. [mem 0xfed40000-0xfed4087f flags 0x200] vs fed40080 f80

If there is no solution to this How do I add blacklist tpm_crb? I gave this command;

echo blacklist tpm_crb > /etc/modprobe.d/tpm_crb.conf

not working

sorry for my poor eng.

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I've edited your comment to make it use use syntax highlighting. Please do that yourself in the future.

genodeftest gravatar imagegenodeftest ( 2018-07-08 02:03:45 -0600 )edit

Upstream kernel.org bug reports: 195843, 195787

genodeftest gravatar imagegenodeftest ( 2018-07-08 02:06:55 -0600 )edit

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answered 2018-07-07 21:20:14 -0600

fcomida gravatar image

It's about the Trusted Platform Module bullshit that you don't need because you don't trust. Enter BIOS settings and see if you can disable this crap from there. Otherwise create the file /etc/modprobe.d/blacklist-tpm_crb.conf with the line install tpm_crb /bin/false in it. Well I'm trusting you that tpm_crb is the right module name. Run lsmod to be sure. An alternative is to add modprobe.blacklist=tpm_crb to the kernel command line.

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TPM is no bullshit, it may actually be useful.

genodeftest gravatar imagegenodeftest ( 2018-07-08 02:05:00 -0600 )edit

@genodeftest Believe what you want but only down vote a technically incorrect answer, not a perfectly right one.

fcomida gravatar imagefcomida ( 2018-07-08 06:11:34 -0600 )edit

@fcomida@genodeftest thax for reply its kernel bug. https://bugzilla.redhat.com/show_bug.... I will wait for it to dissolve. if they do

can gravatar imagecan ( 2018-07-08 06:49:35 -0600 )edit

@genodeftest TPM uses a private key which is only available the hardware chip manufacturer, never end-users. So the security model it utilizes depends entirely on trust in their security. For one thing it provides a permanent backdoor for the manufacturer. Also, in Oct 2017, a code library developed by Infineon, which had been in widespread use in its TPMs, allowed RSA private keys to be inferred from public keys. So TPM is "bullshit" in both that; it is actually very vulnerable, and secondly it disrespects users' freedom being closed source; a "company secret". It has potential, but...

cuvtixo gravatar imagecuvtixo ( 2018-09-11 15:16:06 -0600 )edit
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answered 2018-07-07 15:45:36 -0600

muep gravatar image

Apart from having this message visible on boot, is there some problem on the system that you think is related to this message? Drivers can report bad behavior of hardware or firmware, even if they also include the workarounds needed to cope with that behavior.

If your system still works as expected, you do not necessarily need to do anything in response to the log message you posted.

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thax for answer.

the system is running smoothly. I just do not want to see this log message.

tpm how do I add a modprobe blacklist?

can gravatar imagecan ( 2018-07-07 16:02:21 -0600 )edit

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Asked: 2018-07-07 09:15:11 -0600

Seen: 1,068 times

Last updated: Jul 08 '18