[BUG?] grub error about linux16 and initrd16

[CicadaSeventeen]

Describe the bug When booting, there will be some additional options in grub2 which do not work at all.

To Reproduce Please describe the steps needed to reproduce the bug:

1. Install a new SIlverblue or Kinoite in amd64 UEFI computer.
2. Using rpm-ostree to make more than one grub options.
3. Boot and select the lower options, and such things happen.
4. I find that in qemu virtual machine such problem does not exist, but silverblue (with gnome DE) has same problem as Kinoite.

Expected behavior For example, on my laptop /boot/grub2/grub.cfg shows:

Fedora Linux 35.20220503.0 (Kinoite) (ostree:0)
Fedora Linux 35.20220424.0 (Kinoite) (ostree:1)
Fedora Linux 35.20220424.0 (Kinoite) (ostree:2)
Fedora Linux 35.20220401.0 (Kinoite) (ostree:3)
Fedora Linux 35.20220401.0 (Kinoite) (ostree:4)
Fedora Linux 35.20220410.0 (Kinoite) (ostree:5)
Windows Boot Manager (on /dev/nvme1n1p1)
UEFI Firmware Settings
...

But when booting, there shows 12 options rather than 7. Every Fedora Linux 35.20220503.0 (Kinoite) (ostree:x) appears twice, in which the upper one can boot but the lower one cannot. If I choose it, it will shows: something like linux16 not found and initrd16 not found. I manually change linux16 to linux and initrd16 to initrd, and the booting works. Opening /boot/gurb2/grub.cfg, there is like

menuentry 'Fedora Linux 35.20220503.0 (Kinoite) (ostree:0)' --class gnu-linux --class gnu --class os --unrestricted 'ostree-0-546f8e47-8741-4dc0-96f6-833faa7b5935' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_gpt
insmod ext2
search --no-floppy --fs-uuid --set=root 546f8e47-8741-4dc0-96f6-833faa7b5935
linux16 /ostree/fedora-e4c1e66cf60c9e7059b1132e5c2dfaeb2c0a8a11f8824c73e039d88ed2b8e99d/vmlinuz-5.17.5-200.fc35.x86_64 resume=UUID=5ba106d7-6614-4e38-ba77-0244996d07d6 rhgb quiet root=UUID=ebbb378b-00bf-44ef-8381-a90a0a449d6a rootflags=subvol=root ostree=/ostree/boot.0/fedora/e4c1e66cf60c9e7059b1132e5c2dfaeb2c0a8a11f8824c73e039d88ed2b8e99d/0 rd.driver.blacklist=nouveau modprobe.blacklist=nouveau nvidia-drm.modeset=1
initrd16 /ostree/fedora-e4c1e66cf60c9e7059b1132e5c2dfaeb2c0a8a11f8824c73e039d88ed2b8e99d/initramfs-5.17.5-200.fc35.x86_64.img
}

In this file I do not find those options that work. I try finding them in other grub.cfg but fail. If opening them in gurb menu when booting, there are linux and initrd rather than *16 ones which makes booting possible. In /boot/efi/EFI/fedora/grub.cfg there is only

search --no-floppy --fs-uuid --set=dev 546f8e47-8741-4dc0-96f6-833faa7b5935
set prefix=($dev)/grub2

export $prefix
configfile $prefix/grub.cfg

Finally I find somethings in /boot/loader/entries looking like the lost 5 options in gurb.

OS version:

State: idle
BootedDeployment:
● fedora:fedora/35/x86_64/kinoite
                   Version: 35.20220503.0 (2022-05-03T14:17:05Z)
                BaseCommit: b63ac7ed4e3fdeb76e264f6e7fa97cec0f1699354f35d97599fa888040240400
              GPGSignature: Valid signature by 787EA6AE1147EEE56C40B30CDB4639719867C58F
           LayeredPackages: akmod-nvidia dnf fcitx5-qt gnome-boxes spice-protocol spice-server tlp virt-manager
                            xorg-x11-drv-nvidia xorg-x11-drv-nvidia-cuda
             LocalPackages: expressvpn-3.21.0.2-1.x86_64 rpmfusion-free-release-35-1.noarch
                            rpmfusion-nonfree-release-35-1.noarch
                    Pinned: yes

[CicadaSeventeen]

Also see https://discussion.fedoraproject.org/t/duplicated-grub-entries-on-silverblue-kinoite/33882/7

[travier]

I'm going to close this as a duplicate of https://github.com/fedora-silverblue/issue-tracker/issues/120. Feel free to re-open and comment with more info if you think that's another issue.