Can it be good addition to Hardened-Linux patch after GRsecurity went private? Anyway I'll wait until the project mature.
LKRG Under The Hood presentation slides: http://www.openwall.com/presentations/CONFidence2018-LKRG-Under-The-Hood/
A recent big update: https://www.phoronix.com/scan.php?page=news_item&px=Linux-LKRG-0.8-Released Updated presentation for 2020: https://www.openwall.com/presentations/OSTconf2020-LKRG-In-A-Nutshell/
LKRG 0.9.0 is out, with support for new Linux kernels, optionally building LKRG in kernel tree, Continuous Integration (boot tests in VMs, including with Ubuntu's daily updated mainline kernels), and much more. https://www.openwall.com/lists/announce/2021/04/12/1 LKRG 0.9.1 is out, addressing various issues reported against the 0.9.0 release. https://www.openwall.com/lists/announce/2021/04/27/1