[Bug 1947046] Re: EFI stub: ERROR: FIRMWARE BUG: kernel image not aligned on 64k boundary

[Zygmunt Krynicki]

I've experienced this after installing Impish host on Raspberry Pi 4
with an Impish VM. The VM was working correctly up until just a moment
ago, as I type this, I've installed `linux-modules-extra-raspi in order
to get usb serial adapters to work inside the virtual machine. The
package installed normally and initrd was created normally as well. Upon
reboot, the only thing I see is the error mentioned in this bug report
(you can see it if you do: lxc start --attach) and the VM is spinning at
100% CPU but linux is not booting.

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to grub2 in Ubuntu.
https://bugs.launchpad.net/bugs/1947046

Title:
  EFI stub: ERROR: FIRMWARE BUG: kernel image not aligned on 64k
  boundary

Status in grub2 package in Ubuntu:
  In Progress

Bug description:
  [Impact]
  Recent kernels emit the following error message when booting on arm64 platforms:

    EFI stub: ERROR: FIRMWARE BUG: kernel image not aligned on 64k
  boundary

  While this doesn't appear to cause any functional issues - and indeed,
  the kernel commit that added the error[*] says "We can deal with this,
  but let's check for this condition anyway", it is still likely to
  cause user concern.

  [*]
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c32ac11da3f83bb42b986702a9b92f0a14ed4182

  [Test Case]
  Boot a recent kernel on an EFI-based arm64 system (impish will do, but the kernel patch is also hitting kernels in older releases). This message will be emitted after GRUB execs the kernel EFI stub.

  [Fix]
  https://github.com/rhboot/grub2/commit/6a5babc21e3ec665e0bae30e399db296451c121e

  [What Could Go Wrong]

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1947046/+subscriptions