** Also affects: grub2 (Ubuntu Focal)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Focal)
Importance: Undecided
Status: New
** Also affects: grub2-unsigned (Ubuntu Focal)
Importance: Undecided
Status: New
** Also affects: grub2 (Ubuntu Jammy)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Jammy)
Importance: Undecided
Status: New
** Also affects: grub2-unsigned (Ubuntu Jammy)
Importance: Undecided
Status: New
** Also affects: grub2 (Ubuntu Lunar)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Lunar)
Importance: Undecided
Status: New
** Also affects: grub2-unsigned (Ubuntu Lunar)
Importance: Undecided
Status: New
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/2002226
Title:
Add support for kernels compiled with CONFIG_EFI_ZBOOT
Status in grub2 package in Ubuntu:
Fix Released
Status in grub2-unsigned package in Ubuntu:
Fix Released
Status in linux package in Ubuntu:
Triaged
Status in grub2 source package in Focal:
New
Status in grub2-unsigned source package in Focal:
New
Status in linux source package in Focal:
New
Status in grub2 source package in Jammy:
New
Status in grub2-unsigned source package in Jammy:
New
Status in linux source package in Jammy:
New
Status in grub2 source package in Lunar:
New
Status in grub2-unsigned source package in Lunar:
New
Status in linux source package in Lunar:
New
Bug description:
[Impact]
Arm64 kernels compiled with CONFIG_EFI_ZBOOT=y don't use the
ARM64_IMAGE_MAGIC ('ARM\x64') but LINUX_PE_MAGIC (0x818223cd) in the PE Header.
Our GRUB fails to boot such a kernel.
We should eliminate the following check:
grub-core/loader/efi/linux.c:75:
if (lh->magic != GRUB_LINUX_ARCH_MAGIC_SIGNATURE)
return grub_error(GRUB_ERR_BAD_OS, "invalid magic number");
This will allow any EFI binary to be run using the linux command.
[Test plan]
* check that grub and EFI based ARM64 machines boot
* check that MAAS deployment works
[Where problems could occur]
* Non-EFI bootloaders want to boot with regular vmlinuz.gz. If one is using
piboot, u-boot, abootimg likely one still wants to build Image.gz and have
CONFIG_EFI_ZBOOT disabled.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/2002226/+subscriptions
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