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need help understanding the ubuntu kernel source version numbering

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Good day all!

I am running 18.04.5 for which ... uname -r ... yields 5.4.0-74.

I want to change one kernel setting and rebuild from the exact source to avoid issues.

In my steps to do so ... I issue this command:

apt source linux-image-unsigned-$(uname -r)

That gets me these files:

linux-hwe-5.4-5.4.0-orig.tar.gz
linux-hwe-5.4-5.4.0-74.83~18.04.1.diff.gz
linux-hwe-5.4-5.4.0-74.83~18.04.1.dsc

prior to build ... debian/changelog seems to have sections titled with [x.x.x-74.83] that run from absolute versions starting with my original version (5.4.0) thru the top last one that is indeed 5.4.114.

After build ... the debian/changelog is replaced with (a much shorter file):

linux-5.4.114 (5.4.114-1) bionic; urgency-low

  * Custom built Linux kernel. 

 -- <user@tester2> "date and time"

When I run ... uname -r ... it yields 5.4.114

There doesn't seem to be any way to avoid this.

Can someone elaborate on why all this is done this way? Is it safe?

Any info to help me better understand would be helpful.

Thanks!

mangohost

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