Memory tainting with DECAF

[Rahul]

I had tried to use memory tainting on an Ubuntu x86 based guest OS  few months back, but the memory tainting functionality was broken/unstable then (i did not get callbacks for tainted memory locations, whereas API tracing, network tracing was working fine). Is the memory taint functionality working with ubuntu now or do i need to use windows as guest OS ?

What are the recommended versions for windows/ubuntu recommended to work with the latest DECAF for memory tainting to work ? Also, are there any improvements made to perf with latest DECAF?