grub config does not match kernel image name after apt upgrade

grub config does not match kernel image name after apt upgrade

[Daniel Squires]

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In our custom x86 image, it runs fine after initial deploy, but if we then apt update && apt upgrade and receive a new kernel the installed kernel name does not match that in the grub configuration and thus boot fails if not manually corrected. I don't know if this is a mis-configuration in our build or a bug upstream. any ideas?

yocto:~$ cat /boot/EFI/BOOT/grub.cfg
serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1
default=boot
timeout=5
menuentry 'boot'{
linux /bzImage root=PARTUUID=52cb2dd8-ef93-4f4a-8135-1e3326f181ac rootwait rootfstype=ext4 console=ttyS0,115200 console=tty0
}

yocto:/boot$ ls -lht
-rwxr-xr-x    1 root     root        9.1M Apr 28 13:26 bzImage-5.15.36-yocto-standard
-rwxr-xr-x    1 root     root        9.1M Feb 15 14:19 bzImage-5.15.22-yocto-standard
drwxr-xr-x    3 root     root        2.0K Apr  5  2011 EFI

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Re: [poky] grub config does not match kernel image name after apt upgrade

[Richard Purdie]

On Thu, 2022-05-26 at 01:50 -0700, Daniel Squires wrote:
> In our custom x86 image, it runs fine after initial deploy, but if we
> then apt update && apt upgrade and receive a new kernel the installed
> kernel name does not match that in the grub configuration and thus
> boot fails if not manually corrected. I don't know if this is a mis-
> configuration in our build or a bug upstream. any ideas?
> 
> yocto:~$ cat /boot/EFI/BOOT/grub.cfg  
> serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1 
> default=boot 
> timeout=5 
> menuentry 'boot'{ 
> linux /bzImage root=PARTUUID=52cb2dd8-ef93-4f4a-8135-1e3326f181ac
> rootwait rootfstype=ext4 console=ttyS0,115200 console=tty0 
> }
> 
> yocto:/boot$ ls -lht 
> -rwxr-xr-x    1 root     root        9.1M Apr 28 13:26 bzImage-
> 5.15.36-yocto-standard 
> -rwxr-xr-x    1 root     root        9.1M Feb 15 14:19 bzImage-
> 5.15.22-yocto-standard 
> drwxr-xr-x    3 root     root        2.0K Apr  5  2011 EFI

On target package upgrades are a best effort sitution and not something
we directly test. THe kernel in particular is tricky as everyone
configured and uses it differently, it varies even by image type. It
sounds like you don't have any configuration in the kernel packages to
adapt to your boot situation and allow them to upgrade grub so that is
the piece you'd need to add. We'd welcome contributions back if it can
be done in a generic way.

Cheers,

Richard