fix(cmake/modules): update driver to support kernels 5.6.y

[leodido]

Co-authored-by: Lorenzo Fontana [email protected]
Signed-off-by: Leonardo Di Donato [email protected]

What type of PR is this?

/kind bug

Any specific area of the project related to this PR?
/area build

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #1173
Refs draios/sysdig#1621

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

fix: support Falco driver on Linux kernels 5.6.y

[leodido]

/cc @fntlnz
/cc @kris-nova

[krisnova]

/approve

[krisnova]

bravo!

[poiana]

LGTM label has been added.

Git tree hash: d3ec353cbeccc49cee536bda2bb18ff69f8b5417

[poiana]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: fntlnz, kris-nova

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[krisnova]

So I think this broke our driver build.

Has anyone been able to compile the driver with this new version?

I am testing on 4.19.118 and will report my findings.

[fntlnz]

@kris-nova - Can you post more details? You mean the process of building a driver from source or our automated driver building process?

I tested with against the longterm kernels and @nathan-b - the actual patch author also tested in their environment: draios/sysdig#1621 (comment)

[fntlnz]

Also thanks for testing this out @kris-nova we definitely need to understand what happened to your build before we release because releasing a broken driver might be a huge deal for the project

[nathan-b]

Our automated tests have been running with this change (both eBPF and kmod) for nearly a week now. I'm not saying that I didn't break anything, but I don't think I broke everything ;)

[fntlnz]

So this is ready to ship into the next Falco release! Thanks for the fix @nathan-b !