# Since the GRUB issue around the end of August 2022 I have had to chroot in and reinstall GRUB every time I update my system. 
# I have been getting the grub_debug_malloc not found error on boot. 
# The only remediation I have been able to implement is the following.

# Decrypt luks partition
cryptsetup luksOpen /dev/nvme1n1p2 crypt_device
# Mount root
mount /dev/mapper/crypt_device /mnt
# Mount /boot/efi Sometime this will not work and the /boot/efi directory needs to be specified with grub-install. See below.
mount /dev/nvme1n1p1 /mnt/boot/efi
# Mount extra system odds and ends
for i in /dev /dev/pts /proc /sys /run; do mount -B $i /mnt$i; done
# Chroot into system
chroot /mnt
# Reinstall GRUB
sudo grub-install --target=x86_64-efi --bootloader-id=GRUB --efi-directory=/boot/efi --no-nvram --removable
# Remake GRUB config
sudo grub-mkconfig -o /boot/grub/grub.cfg
# Exit chroot
exit
# Reboot system
reboot