Can not load kext

Question

panz OP

Created Oct ’21

Replies 2

Boosts 0

Views 2.0k

Participants 1

I'm trying to load a kext following this official documentation page, but when i try to load the kext with:

sudo kextutil -t /tmp/resourceCompressor.kext/

I get this error:

Executing: /usr/bin/kmutil load --bundle-path /tmp/resourceCompressor.kext
Error Domain=KMErrorDomain Code=71 "Kernel request failed: (libkern/kext) not loadable (reason unspecified) (-603946989)" UserInfo={NSLocalizedDescription=Kernel request failed: (libkern/kext) not loadable (reason unspecified) (-603946989)}

Also if i try to use the no load option i get another error:

sudo kextutil -t -n /tmp/resourceCompressor.kext/

kextutil: -n is not a supported kmutil mode

As far as i understand the kextutil, kextload, kextunload binaries have been deprecated i favour of kmutil but i cant find any guide on how to use it, and still i dont know why my kext cant be load. What can I do to load it?

Answered by panz in 691656022

I solved this by myself. First of all as of macOS 11 every third party kext should be located in /Library/Extensions in order to be loaded by the system. And every time you rebuild it and try to load it with kextutil you will be prompted with a SystemPreferences app request you must approve and after that you will be allowed to load the kext only after rebooting the system. So as far i understand you should repeat this process every time for every rebuild.

Boost

Answer 1

panz OP

Oct ’21

I found this note on apple site: Note In macOS 11 and later, kmutil replaces kextload, kextunload, and other earlier tools for loading and managing kexts. The older tools still work, but their implementations now call kmutil.

0

Answer 2

panz OP

Oct ’21

Accepted Answer

I solved this by myself. First of all as of macOS 11 every third party kext should be located in /Library/Extensions in order to be loaded by the system. And every time you rebuild it and try to load it with kextutil you will be prompted with a SystemPreferences app request you must approve and after that you will be allowed to load the kext only after rebooting the system. So as far i understand you should repeat this process every time for every rebuild.

1