GNU GRUB filesystem f2fs fail

How to build Linux image for x86 grub with f2fs filesystem?

What I did

• Buildroot commit sha1: 2024.08-1306-gdc9c4e0576
• Distribution of the build machine: Ubuntu 24.04.1 LTS (Noble Numbat)

All my steps in my repo:

git clone --remote-submodules --recurse-submodules -j8 https://github.com/AndreiCherniaev/buildroot_BIOS_f2fs_x86.git
cd buildroot_BIOS_f2fs_x86

make clean -C buildroot
make BR2_EXTERNAL=$PWD/my_external_tree -C $PWD/buildroot f2fs_qemu_x86_defconfig
make -C buildroot

qemu-system-i386 -M pc -drive file=../Buildroot.img,if=virtio,format=raw -net nic,model=virtio -net user

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What happens

I see GNU GRUB screen instead of Linux... I have tested with QEMU and with hardware and both the same fail with f2fs... In BIOS terminal ls gives empty result. After insmod f2fs situation is the same. I think my configs are right because when I build the same repo but with ext4 filesystem then Linux can be loaded... I try to use google and found "While GRUB supports F2FS since version 2.0.4, it cannot correctly read its boot files from an F2FS partition that was created with the extra_attr flag enabled" - but I don't think that it is relative to my case...

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What was expected

After GNU GRUB Linux should be.