See the link for upstream support thread. Reproducible: Always
The problem started with hardened-sources-3.3.7, hardened-sources-3.3.6-r1 is OK.
(In reply to comment #1) > The problem started with hardened-sources-3.3.7, hardened-sources-3.3.6-r1 > is OK. Unfortunately those has other problems and I had to remove them.
It seems that the particular problem about smartd has been solved as of hardened-sources-3.4.3.