[Buildroot] [Bug 14281] New: Boot process stuck at "GRUB loading.." since 2021.02.1

* [Buildroot] [Bug 14281] New: Boot process stuck at "GRUB loading.." since 2021.02.1
@ 2021-10-18 12:08 bugzilla
  2021-10-18 12:12 ` [Buildroot] [Bug 14281] " bugzilla
                   ` (6 more replies)
  0 siblings, 7 replies; 8+ messages in thread
From: bugzilla @ 2021-10-18 12:08 UTC (permalink / raw)
  To: buildroot

https://bugs.busybox.net/show_bug.cgi?id=14281

            Bug ID: 14281
           Summary: Boot process stuck at "GRUB loading.." since 2021.02.1
           Product: buildroot
           Version: 2021.02.5
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P5
         Component: Other
          Assignee: unassigned@buildroot.uclibc.org
          Reporter: stefan.walter@iml.fraunhofer.de
                CC: buildroot@uclibc.org
  Target Milestone: ---

The following used to work until including Buildroot 2021.02, i.e. the
resulting image used to boot normally. Ever since Buildroot 2021.02.1, the
resulting image does not boot any more - the boot process either gets stuck
right after displaying "GRUB loading..", or it reboots at that point, leading
to an infinite boot loop. More specifically, this problem exists since the
following commit:

e840f2d469 boot/grub2: Backport 2021/03/02 securify fixes

Here's what I'm doing:

1. Run Buildroot to create a root partition image (my_defconfig attached).
2. Create a GRUB image like this (grub_early.cfg attached):

/path/to/buildroot-sdk/host/bin/grub-mkimage --config=grub_early.cfg
--directory=/path/to/buildroot-sdk/host/lib/grub/i386-pc -o
./genimage_input_tmp/grub_core.img --format=i386-pc --prefix==/boot/grub
biosdisk part_msdos ext2 normal linux configfile

3. Create a home partition image like this:

MKE2FS_CONFIG=/path/to/buildroot-sdk/host/etc/mke2fs.conf
/path/to/buildroot-sdk/host/sbin/mke2fs -d home_partition_prep/home -j -L home
-t ext3 -U random -b 4096 ./genimage_input_tmp/home.ext3 25M

4. Create a disk image like this (genimage.cfg attached):

/path/to/buildroot-sdk/host/bin/genimage --loglevel=1 --config=genimage.cfg
--inputpath=./genimage_input_tmp --outputpath=images
--rootpath=home_partition_prep --tmppath=./genimage_tmp
--tune2fs=/path/to/buildroot-sdk/host/usr/sbin/tune2fs
--e2fsck=/path/to/buildroot-sdk/host/usr/sbin/e2fsck

(Note that I had also previously raised this issue on the Buildroot mailing
list - see
http://lists.busybox.net/pipermail/buildroot/2021-October/625323.html.)

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