This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1838796
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1838796
Title:
TPM event log does not contain events measured after ExitBootServices
Status in linux package in Ubuntu:
Incomplete
Bug description:
The TPM event log (/sys/kernel/security/tpm0/binary_bios_measurements)
does not contain any events that are measured by UEFI after the
kernel's EFI Boot stub calls ExitBootServices().
This means that PCR values calculated from the event log will not
match the actual PCR values on the machine for PCR indices into which
these events are measured.
There are upstream patches to fix this in the mainline kernel tree:
https://lkml.org/lkml/2019/5/17/725
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