bugGNU GRUB - Bugs: bug #62920, Memory address error when booting...


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bug #62920: Memory address error when booting from LUKS-encrypted /boot

Submitter:  ljyip
Submitted:  Fri 19 Aug 2022 03:08:33 PM UTC
Category:  Booting Severity:  Major
Priority:  5 - Normal Item Group:  Software Error
Status:  None Privacy:  Public
Assigned to:  None Originator Name:  Jason Yip
Open/Closed:  Open Release:  Git master
Release:  Reproducibility:  Every Time
Planned Release:  None

Wed 31 Aug 2022 02:00:42 PM UTC, comment #3: 

I was able to resolve my issue.

It is not enough to run grub-mkimage to replace the file in the EFI System Partition after upgrading the Grub package.

grub-install also needed to be run to replace the files in /boot/grub, THEN also use grub-mkimage to replace the file in the EFI System Partition.

Here are my steps (as the root user):

Use package manager to upgrade the Grub package.
grub-install --target=x86_64-efi --efi-directory=/efi --removable
grub-mkimage -p /boot/grub -O x86_64-efi -c /root/grub-pre.cfg -o /tmp/grubx64.efi part_gpt cryptodisk luks2 gcry_rijndael pbkdf2 gcry_sha256 ext2 btrfs
install -v /tmp/grubx64.efi /efi/EFI/BOOT/BOOTX64.EFI
grub-mkconfig -o /boot/grub/grub.cfg
mkinitcpio -P

Linux Ninja <linuxninja>
Sat 27 Aug 2022 01:00:13 PM UTC, comment #2: 

My setup is VERY similar to ljyip
I found that I also had to stick with commit g2f4430cc0, else I would get an error such as:

452: out of range pointer: 0xb5dc1dc0

when selecting a grub menu item to boot Linux.

I also use grub-mkimage to create a EFI binary:

grub-mkimage -p /boot/grub -O x86_64-efi -c grub-pre.cfg -o /tmp/grubx64.efi luks2 part_gpt cryptodisk gcry_rijndael pbkdf2 gcry_sha256 ext2 btrfs

Then use this in EFI:

install -v /tmp/grubx64.efi /efi/EFI/BOOT/BOOTX64.EFI

I am using encrypted BTRFS /boot on LUKS2 using PBKDF2

If necessary, I can provide my configs, but they do not meaningfully differ from the original submission.

Linux Ninja <linuxninja>
Thu 25 Aug 2022 03:08:50 PM UTC, comment #1: 

I'm new here and I have created an account just for this issue.
I would vote instead of leaving a comment, but I don't really understand how the votes work here :/ so I would be glad if this is fixed soon, since I am not the only one who has this issue right now.

Fri 19 Aug 2022 03:08:33 PM UTC, original submission:  

I have a LUKS2-encrypted /boot using PBKDF2. Commit g2f4430cc0 has always worked for me. However, commit g0c6c1aff2 would do the following: boot into linux-zen then return an error about access memory address.

My setup:

Arch Linux

/dev/nvme0n1p1 -> unencrypted EFI partition
/dev/nvme0n1p2 -> LUKS-encrypted /boot partition using PBKDF2
/dev/nvme0n1p3 -> LUKS-encrypted LVM using Argon2ID (I include keyfile inside initramdisk that automatically unlocks this partition)

I install GRUB the way outlined at https://wiki.archlinux.org/title/GRUB#LUKS2.

My grub-pre.cfg:

set crypto_uuid=<PARTITION UUID>
cryptomount -u $crypto_uuid

set root=crypto0
set prefix=($root)/grub
insmod normal

I run this script to install GRUB:


grub-mkimage -p /boot/grub -O x86_64-efi -c grub-pre.cfg -o /tmp/grubx64.efi luks2 part_gpt cryptodisk gcry_rijndael pbkdf2 gcry_sha256 btrfs
install -v /tmp/grubx64.efi /boot/efi/EFI/GRUB/grubx64.efi

My /etc/default/grub:

# GRUB boot loader configuration

GRUB_CMDLINE_LINUX_DEFAULT="loglevel=3 resume=/dev/vg/swap"
GRUB_CMDLINE_LINUX="cryptdevice=PARTLABEL=lvm:cryptlvm cryptkey=rootfs:/etc/keys/cryptlvm.keyfile"

# Preload both GPT and MBR modules so that they are not missed
GRUB_PRELOAD_MODULES="part_gpt part_msdos"

# Uncomment to enable booting from LUKS encrypted devices

# Set to 'countdown' or 'hidden' to change timeout behavior,
# press ESC key to display menu.

# Uncomment to use basic console

# Uncomment to disable graphical terminal

# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'

# Uncomment to allow the kernel use the same resolution used by grub

# Uncomment if you want GRUB to pass to the Linux kernel the old parameter
# format "root=/dev/xxx" instead of "root=/dev/disk/by-uuid/xxx"

# Uncomment to disable generation of recovery mode menu entries

# Uncomment and set to the desired menu colors.  Used by normal and wallpaper
# modes only.  Entries specified as foreground/background.

# Uncomment one of them for the gfx desired, a image background or a gfxtheme

# Uncomment to get a beep at GRUB start
#GRUB_INIT_TUNE="480 440 1"

# Uncomment to make GRUB remember the last selection. This requires
# setting 'GRUB_DEFAULT=saved' above.

# Uncomment to disable submenus in boot menu

# Probing for other operating systems is disabled for security reasons. Read
# documentation on GRUB_DISABLE_OS_PROBER, if still want to enable this
# functionality install os-prober and uncomment to detect and include other
# operating systems.

My /etc/mkinitcpio.conf:

MODULES=(usbhid xhci_hcd i915)



MODULES=(usbhid xhci_hcd i915)


HOOKS=(base udev autodetect keyboard keymap consolefont modconf block encrypt lvm2 filesystems resume fsck)



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