v6.3-r0: build error when CONFIG_NUMA is enabled

Just tried to update to 6.3 and got:

ld: lib/cpumask.o: in function `cpumask_local_spread':
/tmp/linux-6.3.0/lib/cpumask.c:150: undefined reference to `sched_numa_find_nth_cpu'

Apparently I had CONFIG_NUMA enabled, despite having only single-sockets systems. Turning it off made the build work.