Cannot boot UC20 with new kernel snaps with 384 MB in VM

[Ian Johnson]

We see issues like this in the nested serial boot log 100% of the time when running ubuntu-20.04-64:tests/nested/manual/minimal-smoke:secboot_disabled:

3hBdsDxe: loading Boot0002 "UEFI Misc Device" from PciRoot(0x0)/Pci(0x5,0x0)
BdsDxe: starting Boot0002 "UEFI Misc Device" from PciRoot(0x0)/Pci(0x5,0x0)
EFI stub: ERROR: Failed to allocate usable memory for kernel.
efi_relocate_kernel() failed!
efi_main() failed!

Full log : https://pastebin.ubuntu.com/p/n4RZWNWMMm/

Here is another execution: https://pastebin.ubuntu.com/p/7N9bNVMB8X/

The kernel version is 5.4.0-92-generic

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

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 1954545

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.

[Ian Johnson (anonymouse67)]

apport-collect does not work on Ubuntu core

[Sergio Cazzolato (sergio-j-cazzolato)]

the new minimal memory requirements are:
512M for uc20 and uc22
256M for uc16 and uc18