&gt; But it also provides bugs, as demonstrated.<p>I agree with it in general, but wouldn&#x27;t go with the same conclusions. Upstream linux also sometimes results in random deadlocks and issues that people try to debug for weeks. That&#x27;s what the rc cycle (6+ of them usually) is for.<p>The unstabilities of grsec are kind of a side-effect of not many people looking at it. If this change happened on lkml, I&#x27;d bet someone would pick up the OpenAFS issue earlier. I don&#x27;t think anyone from grsec team would be actively opposed to more users testing the releases.