Bug#916695: grub-efi-arm 2.02+dfsg1-9 fails to boot Debian Buster

[Heinrich Schuchardt]

I now tried tested different version:

./grub2-common_2.02+dfsg1-6kali1_armhf.deb
./grub-efi-arm_2.02+dfsg1-6kali1_armhf.deb
./grub-common_2.02+dfsg1-6kali1_armhf.deb
./grub-efi-arm-bin_2.02+dfsg1-6kali1_armhf.deb

work fine.

./grub-common_2.02+dfsg1-8kali1_armhf.deb
./grub-efi-arm-bin_2.02+dfsg1-8kali1_armhf.deb
./grub2-common_2.02+dfsg1-8kali1_armhf.deb
./grub-efi-arm_2.02+dfsg1-8kali1_armhf.deb

work fine.

grub2-common_2.02+dfsg1-9_armhf.deb
grub-common_2.02+dfsg1-9_armhf.deb
grub-efi-arm_2.02+dfsg1-9_armhf.deb
grub-efi-arm-bin_2.02+dfsg1-9_armhf.deb

break it:

Loading Linux 4.18.0-3-armmp-lpae ...
Loading initial ramdisk ...
data abort
pc : [<7ced657a>]          lr : [<7ced65a9>]
reloc pc : [<fcf7657a>]    lr : [<fcf765a9>]
sp : 7df4d650  ip : 00007f00     fp : 7cedd760
r10: 00000000  r9 : 7cf3f7dc     r8 : 7cedd710
r7 : 00000010  r6 : 5d739fef     r5 : 5d739fff  r4 : 5d739fff
r3 : 00000010  r2 : 5d73a027     r1 : 5d73a027  r0 : 5d739fff
Flags: nzcv  IRQs off  FIQs off  Mode SVC_32
Code: 23006902 ba12b570 f1a04402 18d10610 (e9d13310)
UEFI image [0x7cf2e000:0x7cf431ff] '/\EFI\debian\grubarm.efi'
Resetting CPU ...

I have seen repository https://salsa.debian.org/grub-team/grub.git but I
cannot find instructions to build intermediate packages between 8 and 9
to narrow in on the patch causing the problem.

Best regards

Heinrich