dumper of linux kernel notification chains

There seems to be one little-known thing in linux kernel - notification chains. So they have literal analogue of PsSetLoadImageNotifyRoutine - function register_module_notifier. And similarly they don't have a function to enumerate registered notifications - I don`t know why. Maybe they were bitten by Microsoft. Or maybe I want too much from people whose even "The Linux Kernel Module Programming Guide" contains an error in the code example. Anyway I decided to write my own (btw the last time I wrote drivers for Linux was something around 20 years ago)

How to run

git clone https://github.com/redplait/lkcd.git

cd lkcd

make

sudo insmod ./lkcd.ko

cd test

make

sudo ./dtest

Sample of output (from fresh Ubuntu):

backlight_notifier: 0xffffffff8bd86ba0

backlight_notifier cnt: 1

 0xffffffffc00c8260 - video

reboot_notifier_list: 0xffffffff8b663140

reboot_notifier_list cnt: 6

 0xffffffff8a8e0860 - kernel

 0xffffffff8a074f80 - kernel

 0xffffffff8a929ea0 - kernel

 0xffffffff8a633410 - kernel

 0xffffffff8a76e1e0 - kernel

 0xffffffff8a213350 - kernel

module_notify_list: 0xffffffff8b6c3420

module_notify_list cnt: 10

 0xffffffff8a22b4b0 - kernel

 0xffffffff8a1cec70 - kernel

 0xffffffff8a1b9860 - kernel

 0xffffffff8a1acda0 - kernel

 0xffffffff8a17f830 - kernel

 0xffffffff8a1a11c0 - kernel

 0xffffffff8a1cc280 - kernel

 0xffffffff8a191ad0 - kernel

 0xffffffff8a11e500 - kernel

 0xffffffff8a5a0d60 - kernel

pm_chain_head: 0xffffffff8b66a2a0

pm_chain_head cnt: 9

 0xffffffff8a11fd30 - kernel

 0xffffffff8a09b490 - kernel

 0xffffffff8a769a80 - kernel

 0xffffffff8a8cb230 - kernel

 0xffffffff8a18ae70 - kernel

 0xffffffff8a76e650 - kernel

 0xffffffffc030cfb0 - vmwgfx

 0xffffffffc05286b0 - intel_rapl_common

 0xffffffff8ab13bd0 - kernel

PS: if you know more canonical way to find range of address for kernel - drop me a comment