According to its doc Deltaspike Data uses ASM:
As of DeltaSpike v1.4.0, the Data module internally leverages the Proxy module, which wraps ASM 5. No external dependencies required, and now we have full support for interceptors on partial beans.
It seems that ASM 6 has been released with Java 9 support, so it seems that Deltaspike is probably not compatible with Java 9 unleass there an update is released?