sudo kextcache --clear-staging clears /Library/StageExtensions directory

I have a small kernel extension program which was giving an error for no reason, the error is below:

(error code dc00800d: (libkern/kext) authentication failure (file ownership/permissions))

When I did kextutil on my kext I got following error

Kext rejected due to improper filesystem permissions: <OSKext 0x7f8a3dc26480 [0x7fff836acaf0]> { URL = "file:///Library/StagedExtensions/Library/sampleKext/", ID = "com.apple.sampleKext" }

Kext rejected due to improper filesystem permissions: <OSKext 0x7f8a3dc26480 [0x7fff836acaf0]> { URL = "file:///Library/StagedExtensions//Library/sampleKext", ID = "com.apple.sampleKext" }

Diagnostics for /Library/sampleKext:

Authentication Failures:

File owner/permissions are incorrect (must be root:wheel, nonwritable by group/other):

/Library/StagedExtensions/Library/sampleKext

Contents

_CodeSignature

CodeResources

MacOS

sampleKext

Info.plist

I have root:wheel owners, so it should not give me these errors

But after I ran sudo kextcache --clear-staging , it solved my problem.

What does this command do ? There is no documentation for this command.

Does anyone have the solution to my problem?