[$] The BPF allocator runs into trouble

One of the changes merged for the 5.18 kernel was a specialized memory allocator for BPFprograms that have been loaded into the kernel. Since then, though, thisfeature has run into a fair amount of turbulence and will almost certainly be disabledin the final 5.18 release. This outcome is partly a result of bugs in theallocator itself, but this work also had the bad luck to trip some olderand deeper bugs within the kernel's memory-management subsystem.