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Bug
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Resolution: Done-Errata
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Minor
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rhel-10.0
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None
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grub2-2.12-15.el10
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Yes
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Moderate
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rhel-bootloader
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ssg_core_services
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1
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False
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False
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None
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None
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Unspecified
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Unspecified
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Unspecified
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None
What were you trying to do that didn't work?
dnf upgrade kernel
What is the impact of this issue to you?
Host does not boot
Please provide the package NVR for which the bug is seen:
grub2-common.noarch 1:2.12-13.el10_0
How reproducible is this bug?:
systematically
Steps to reproduce
# cat /etc/default/grub GRUB_TIMEOUT=5 GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)" GRUB_DEFAULT=saved GRUB_DISABLE_SUBMENU=true GRUB_TERMINAL_OUTPUT="console" GRUB_CMDLINE_LINUX="net.ifnames=0 biosdevname=0 crashkernel=2G-64G:256M,64G-:512M resume=UUID=bef768de-68c2-44e9-9a0f-a03b582aed8a rd.lvm.lv=rhel_win-dbausdhrjgi/root rd.lvm.lv=rhel_win-dbausdhrjgi/swap selinux=0 kasan_multi_shot net.ifnames=0 biosdevname=0 console=tty0 console=ttyS1,115200 audit=0" GRUB_DISABLE_RECOVERY="true" GRUB_ENABLE_BLSCFG=false
Note that GRUB_ENABLE_BLSCFG=false is set.
Install a kernel package, such as with `dnf upgrade kernel`.
After installation, the new entry in /boot/grub2/grub.cfg is
menuentry 'Red Hat Enterprise Linux (6.12.0-66.el10.x86_64) 10.0 (Coughlan)' --class red --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-6.12.0-66.el10.x86_64-advanced-89e583a6-4afa-40d4-ba80-418945b13032' {
load_video
insmod gzio
insmod part_gpt
insmod xfs
set root='hd0,gpt2'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint='hd0,gpt2' 6bf999ae-b5be-487a-bc81-f3e2c05e3559
else
search --no-floppy --fs-uuid --set=root 6bf999ae-b5be-487a-bc81-f3e2c05e3559
fi
echo 'Loading Linux 6.12.0-66.el10.x86_64 ...'
linux /vmlinuz-6.12.0-66.el10.x86_64 root=/dev/mapper/rhel_win--dbausdhrjgi-root ro net.ifnames=0 biosdevname=0 crashkernel=2G-64G:256M,64G-:512M resume=UUID=bef768de-68c2-44e9-9a0f-a03b582aed8a rd.lvm.lv=rhel_win-dbausdhrjgi/root rd.lvm.lv=rhel_win-dbausdhrjgi/swap selinux=0 kasan_multi_shot net.ifnames=0 biosdevname=0 console=tty0 console=ttyS1,115200 audit=0
}
Note that there is no "initrd" directive. As a result, the system does not boot.
If I run
# grub2-mkconfig -o /boot/grub2/grub.cfg Generating grub configuration file ... Found linux image: /boot/vmlinuz-6.12.0-66.el10.x86_64 Found initrd image: /boot/initramfs-6.12.0-66.el10.x86_64.img Found linux image: /boot/vmlinuz-6.12.0-55.7.1.el10_0.x86_64 Found initrd image: /boot/initramfs-6.12.0-55.7.1.el10_0.x86_64.img Found linux image: /boot/vmlinuz-0-rescue-ade619fd5f3141af81dee6b26c9b89a7 Found initrd image: /boot/initramfs-0-rescue-ade619fd5f3141af81dee6b26c9b89a7.img Adding boot menu entry for UEFI Firmware Settings ... done
The boot entry is updated to
menuentry 'Red Hat Enterprise Linux (6.12.0-66.el10.x86_64) 10.0 (Coughlan)' --class red --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-6.12.0-66.el10.x86_64-advanced-89e583a6-4afa-40d4-ba80-418945b13032' {
load_video
insmod gzio
insmod part_gpt
insmod xfs
set root='hd0,gpt2'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint='hd0,gpt2' 6bf999ae-b5be-487a-bc81-f3e2c05e3559
else
search --no-floppy --fs-uuid --set=root 6bf999ae-b5be-487a-bc81-f3e2c05e3559
fi
echo 'Loading Linux 6.12.0-66.el10.x86_64 ...'
linux /vmlinuz-6.12.0-66.el10.x86_64 root=/dev/mapper/rhel_win--dbausdhrjgi-root ro net.ifnames=0 biosdevname=0 crashkernel=2G-64G:256M,64G-:512M resume=UUID=bef768de-68c2-44e9-9a0f-a03b582aed8a rd.lvm.lv=rhel_win-dbausdhrjgi/root rd.lvm.lv=rhel_win-dbausdhrjgi/swap selinux=0 kasan_multi_shot net.ifnames=0 biosdevname=0 console=tty0 console=ttyS1,115200 audit=0
echo 'Loading initial ramdisk ...'
initrd /initramfs-6.12.0-66.el10.x86_64.img
}
and the system boots.
This problem does not occur on RHEL-9.
Looking at redhat/centos-stream/rpms/grub2.git, perhaps the following commit should be added to RHEL-10:
d08fc02 Re-arm GRUB_ENABLE_BLSCFG=false
- links to
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RHSA-2025:147476
grub2 bug fix and enhancement update
