Hi, Among the blockers in hs-rt we have one assigned to GC: JDK-8147633 - closed/com/oracle/jfr/gc/StackTraceEventTest/TestG1OldAllocationPendingStackTrace.java fails with "Unexpected stack was found" https://bugs.openjdk.java.net/browse/JDK-8147633 It's currently unassigned. Any takers? /Jesper