Hello,
I am attempting to boot the linux-tpmdd kernel and look at the TCG 2
binary_bios_measurements.
Under the following circumstances my kernel will not boot:
* Secure boot enabled
* Booting with shim and grub2 from the Ubuntu 18 repos
* Kernel config is just taken from my ubuntu 18.04.2 install, and filled
in with `yes '' | make oldconfig`
* Kernel signed with my own generated key. Signed using sbsign, key is
enrolled in MOK.
* It seems to be going through the kernel's EFI stub (I see efi_printk
message "EFI: UEFI Secure Boot is enabled")
I have tried these same steps with the same configuration with the
mainline kernel and it boots fine.
I have traced kernel boot to the call to efi_exit_boot_services in
arch/x86/boot/compressed/eboot at which point execution terminates. I
see Matthew has made a couple changes in efi_main which calls exit_boot
(and in turn calls efi_exit_boot_services).
I am wondering if anyone else has seen this issue or might understand
better than me what is going on.
I would be happy to try to repro this issue with a more minimal config
if someone could point me to what steps to follow. I've tried it out on
a couple different machines with the same results.
Thanks,
Jordan
