[Buildroot] Boot process stuck at "GRUB loading.." since 2021.02.1

* [Buildroot] Boot process stuck at "GRUB loading.." since 2021.02.1
@ 2021-10-07 20:36 Walter, Stefan
  2021-10-07 21:50 ` Peter Seiderer
  2021-10-08 16:53 ` Alexander Dahl
  0 siblings, 2 replies; 13+ messages in thread
From: Walter, Stefan @ 2021-10-07 20:36 UTC (permalink / raw)
  To: buildroot

[-- Attachment #1: Type: text/plain, Size: 1453 bytes --]

Hi,

the following used to work until Buildroot 2021.02, i.e. the resulting image booted normally. Ever since Buildroot 2021.02.1 and up until 2021.02.5, 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.

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

Does anyone have any idea what's going wrong here since 2021.02.1?

Best regards,
Stefan

[-- Attachment #2: genimage.cfg --]
[-- Type: application/octet-stream, Size: 537 bytes --]

image compactflash.img {
  hdimage {
    align = 512
    partition-table = true
  }

  partition boot {
    in-partition-table = false
    image = "grub_boot.img"
    offset = 0
    size = 512
  }

  partition grub {
    in-partition-table = false
    image = "grub_core.img"
    offset = 512
    #size =
  }

  partition root {
    partition-type = 0x83
    bootable = true
    # An existing image of the partition's file system.
    image = "rootfs.ext2"
  }

  partition home {
    partition-type = 0x83
    image = "home.ext3"
  }
}

[-- Attachment #3: grub_early.cfg --]
[-- Type: application/octet-stream, Size: 49 bytes --]

set root=hd0,msdos1
set prefix=($root)/boot/grub

[-- Attachment #4: my_defconfig --]
[-- Type: application/octet-stream, Size: 1196 bytes --]

BR2_DL_DIR="$(HOME)/.buildroot-downloads"
BR2_CCACHE=y
BR2_OPTIMIZE_2=y
BR2_TOOLCHAIN_BUILDROOT_GLIBC=y
BR2_KERNEL_HEADERS_4_19=y
BR2_TOOLCHAIN_BUILDROOT_CXX=y
BR2_GCC_ENABLE_LTO=y
BR2_INIT_SYSV=y
BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_EUDEV=y
BR2_SYSTEM_BIN_SH_BASH=y
# BR2_TARGET_GENERIC_REMOUNT_ROOTFS_RW is not set
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_LATEST_CIP_VERSION=y
BR2_LINUX_KERNEL_USE_ARCH_DEFAULT_CONFIG=y
BR2_LINUX_KERNEL_INSTALL_TARGET=y
BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
# BR2_PACKAGE_BUSYBOX is not set
BR2_PACKAGE_LINUX_FIRMWARE=y
BR2_PACKAGE_LINUX_FIRMWARE_RTL_81XX=y
BR2_PACKAGE_BIND=y
# BR2_PACKAGE_IFUPDOWN_SCRIPTS is not set
# BR2_PACKAGE_URANDOM_SCRIPTS is not set
BR2_PACKAGE_KMOD_TOOLS=y
BR2_PACKAGE_UTIL_LINUX_LIBUUID=y
BR2_PACKAGE_UTIL_LINUX_LAST=y
BR2_PACKAGE_UTIL_LINUX_LOGIN=y
BR2_PACKAGE_UTIL_LINUX_RUNUSER=y
BR2_PACKAGE_UTIL_LINUX_SU=y
BR2_PACKAGE_UTIL_LINUX_SULOGIN=y
BR2_TARGET_ROOTFS_EXT2=y
BR2_TARGET_ROOTFS_EXT2_3=y
BR2_TARGET_ROOTFS_EXT2_SIZE="500M"
BR2_TARGET_GRUB2=y
BR2_PACKAGE_HOST_E2TOOLS=y
BR2_PACKAGE_HOST_GENEXT2FS=y
BR2_PACKAGE_HOST_GENIMAGE=y
BR2_PACKAGE_HOST_GENPART=y
BR2_PACKAGE_HOST_GPTFDISK=y
BR2_PACKAGE_HOST_MTD=y
BR2_PACKAGE_HOST_PARTED=y

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