View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000056 | AlmaLinux-8 | grub2 | public | 2021-04-04 05:32 | 2024-03-27 15:37 |
| Reporter | UnknownVictim | Assigned To | alukoshko | ||
| Priority | low | Severity | minor | Reproducibility | have not tried |
| Status | assigned | Resolution | open | ||
| Platform | x86_64 | OS | AlmaLinux | OS Version | 8.3 |
| Summary | 0000056: /boot/grub2/grub.cfg not being updated during new kernel installation | ||||
| Description | Installing newest kernel via "yum update" downloads and installs kernel-4.18.0-240.15.1.el8_3.x86_64 and its dependencies, however, /boot/grub2/grub.cfg is not updated during the process. /boot/grub2/grub.cfg can be manually updated via the command "grub2-mkconfig -o /boot/grub2/grub.cfg". | ||||
| Steps To Reproduce | Freshly installed minimal server, run "yum update" to download and install the updated kernel and dependencies. Check if /boot/grub2/grub.cfg has been updated with the new kernel. (grep 4.18.0-240.15.1.el8_3.x86_64 /boot/grub2/grub.cfg) | ||||
| Tags | No tags attached. | ||||
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Hello and thanks for report. It shouldn't be updated I believe as boot entries are located here: /boot/loader/entries/ Do you have new kernel available in GRUB? |
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/boot/loader/entries/ is being updated during "yum update", [root@alma ~]# ls -l /boot/loader/entries/ total 12 -rw-r--r--. 1 root root 388 Apr 3 23:30 96caaef3565d4035b2459c52e5270b7e-0-rescue.conf -rw-r--r--. 1 root root 368 Apr 3 23:37 96caaef3565d4035b2459c52e5270b7e-4.18.0-240.15.1.el8_3.x86_64.conf -rw-r--r--. 1 root root 316 Apr 3 23:30 96caaef3565d4035b2459c52e5270b7e-4.18.0-240.el8.x86_64.conf [root@alma ~]# however /boot/grub2/grub.cfg is not. On reboot, the system is not loading the new kernel. /boot/grub2/grub.cfg was not reconfigured with the new kernel's details. After running "grub2-mkconfig -o /boot/grub2/grub.cfg", /boot/grub2/grub.cfg is configured with the new kernel's details and the new kernel is loaded on reboots. Hope that clarifies what I am seeing. Thank you. |
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FWIW, same issue see when installing kernel 4.18.0-240.22.1.el8_3.x86_64. |
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Is problem still occur in 8.4? |
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By default, BLS boot config system is used: - kernel-core rpm ships a bls.conf file - /usr/lib/kernel/install.d/20-grub.install copies this file to /boot/loader/entries/<new-name>.conf during kernel install - grub.cfg contains "blscfg" command which will read /boot/loader/entries/*.conf at runtime, and create boot menu on the fly - grub.cfg is never automatically updated during kernel updates, because it does not contain any reference to any kernel/initramfs, so it doesn't need to be updated If you disable BLS by using GRUB_ENABLE_BLSCFG=false in /etc/default/grub then see this: https://bugzilla.redhat.com/show_bug.cgi?id=1899903 I think, going on, disabling BLS will be supported "best effort" by Red Hat / Fedora OTOH, if you have GRUB_ENABLE_BLSCFG=true in /etc/default/grub and boot menu won't update, check whether blscfg is present in grub.cfg: .... ... insmod blscfg blscfg ### END /etc/grub.d/10_linux ### Also, check that /etc/machine-id is always the same and is not somehow updated, otherwise /boot/loader/entries/*.conf files may be out of sync. |
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This is still happening as of 10/26/2022 on 4.18.0-372.16.1.el8_6.x86_64. Is this going to be fixed anytime in the near future? |
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As of 3/27/2024, this is still happening. I spent over an hour trying to figure out why the new kernel didn't have CVE-2023-6817 in the changelogs. It's clearly addressed at https://errata.almalinux.org/8/ALSA-2024-0897.html dnf update and reboots didn't install the new kernel. Running version was: 4.18.0-513.11.1.el8_9.x86_64 Boot Version was: 4.18.0-513.18.1.el8_9.x86_64 Remembered this case and ran the workaround, and now it updated. After 3+ years, this bug is still present? |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2021-04-04 05:32 | UnknownVictim | New Issue | |
| 2021-04-04 16:10 | alukoshko | Note Added: 0000119 | |
| 2021-04-04 16:34 | UnknownVictim | Note Added: 0000120 | |
| 2021-05-09 05:25 | UnknownVictim | Note Added: 0000188 | |
| 2021-07-07 18:10 | alukoshko | Note Added: 0000300 | |
| 2021-07-07 18:10 | alukoshko | Assigned To | => alukoshko |
| 2021-07-07 18:10 | alukoshko | Status | new => assigned |
| 2021-07-23 15:28 | giulio | Note Added: 0000312 | |
| 2022-10-26 15:26 | cPanelSrTechAnalysts | Note Added: 0000711 | |
| 2024-03-27 15:37 | cPanelSrTechAnalysts | Note Added: 0001023 |
