Compile kernel from source

[Ralf Mardorf]

On Wed, 2023-01-04 at 17:10 -0500, Paul Smith wrote:
> On Wed, 2023-01-04 at 17:01 -0500, Jerry Geis wrote:
> > # update-initramfs -u -k 6.2-rc2
>                            ^^^^^^^
> > depmod: ERROR: could not open directory /lib/modules/6.2-rc2: No such file or directory
>                                                        ^^^^^^^
> But:
> 
> > # ls -l /lib/modules
> > drwxr-xr-x 3 root root 4096 Jan  4 14:39 6.2.0-rc2
>                                            ^^^!!^^^^
> 
> Seems pretty straightforward to me... one of these things is not like
> the other...
> 
> Did you try:
> 
>   update-initramfs -u -k 6.2.0-rc2
>                             ^^
> ??

depmode errors not necessarily cause noticeable issues. However, the
discrepancy of 6.2-rc2 vs 6.2.0-rc2 is alarming. IIRC I've never seen
"depmod: FATAL", this is alarming, too.

On Wed, 2023-01-04 at 22:51 +0100, I asked:
> What does "ls -l /boot/" return?
> 
> Is the kernel named "6.2-rc2"?

I did not ask to post the output of listing initrd.img, since this
doesn't show the kernel image name.

On Wed, 2023-01-04 at 17:01 -0500, Jerry Geis wrote:
> ls -l /boot/initrd.img*

I second trying to run update-initramfs against 6.2.0-rc2. OTOH
something named initrd.img-6.2.0-rc2 was build.

/lib/modules/6.2.0-rc2/ does link against 6.2-rc2

On Wed, 2023-01-04 at 17:01 -0500, Jerry Geis wrote:
>  ls -l /lib/modules/6.2.0-rc2/
> lrwxrwxrwx  1 root root      54 Jan  4 14:38 source ->
> /home/silentm/linux-6.2/linux-6.2-rc2

Again, I'm not familiar with update-initramfs, but since /lib/modules is
not named 6.2-rc2, but is named 6.2.0-rc2, the .0 might matter. I still
wonder how initrd.img-6.2.0-rc2 was build.