probes, and 32-bit system calls on 64-bit kernels.
Due to sillyness on my behalf, the code for enumerating modules on
a kernel was broken, so we had no FBT probes against driver modules.
In fact, the INSTR provider and FBT were clashing such that FBT always
lost out (hash table lookup didnt handle the same address used by
each provider). This now works.
Stumbled upon this when trying to figure out why there were no
floppy or ext3 FBT probes.