Comment 1 for bug 1986921

This is caused by upstream dropping trace points in random (again). That change got backported to v5.15.44. There is an upstream fix for lttng-modules which needs to be applied to fix this:

commit ed1149ef
Author: Michael Jeanson <email address hidden>
Date: Tue May 31 15:24:48 2022 -0400

    fix: 'random' tracepoints removed in stable kernels