I didn't find this on Bugzilla but every time I try to compile any of the NPTL kernels I get an error on make BzImage specifying "active_load_balance" in sched.c.

Eventually, if I run it again (without an interim make clean) it does compile and it does boot. Given that I have now experienced the problem on three machines, I suspect that this is a fairly common bug. Does anyone know what this issue stems from?

I have also noticed that these kernels seem determined to build in the crypto options, regardless of how they are configured.

FWIW, I like to build fairly lean kernels, eliminating what I don't need.