Seen on JDK9 b72 PIT, Linux / Oracle Linux 6.4

#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/scratch/jprt/T/P1/211628.amurillo/s/hotspot/src/share/vm/memory/iterator.inline.hpp:63), pid=22922, tid=0xe3c11b70
# assert(Universe::heap()->is_in_closed_subset(o)) failed: should be in closed *p 0xe465cc58 0xe46aab48
#
# JRE version: Java(TM) SE Runtime Environment (9.0) (build 1.9.0-internal-fastdebug-20150702211628.amurillo.jdk9-hs-2015-07--b00)
# Java VM: Java HotSpot(TM) Client VM (1.9.0-internal-fastdebug-20150702211628.amurillo.jdk9-hs-2015-07--b00 compiled mode linux-x86 )
# Core dump will be written. Default location: Core dumps may be processed with "/usr/libexec/abrt-hook-ccpp %s %c %p %u %g %t e" (or dumping to /export/local/aurora/sandbox/results/workDir/closed/com/oracle/jfr/api/ConfigurationTest/TestEventSettingsBuilder/core.22922)
#
# If you would like to submit a bug report, please visit:
# http://bugreport.java.com/bugreport/crash.jsp
#

--------------- T H R E A D ---------------

Current thread (0xf6389c00): VMThread [stack: 0xe3b91000,0xe3c12000] [id=22926]

Stack: [0xe3b91000,0xe3c12000], sp=0xe3c105b0, free space=509k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0xa927ea] VMError::report_and_die()+0x19a
V [libjvm.so+0x3e4156] report_vm_error(char const*, int, char const*, char const*)+0x76
V [libjvm.so+0x4f7bc2] void ExtendedOopClosure::verify<oop>(oop*) [clone .part.121]+0x1c2
V [libjvm.so+0x500743] int InstanceKlass::oop_oop_iterate<true, FastScanClosure>(oop, FastScanClosure*)+0xf3
V [libjvm.so+0x4fa211] InstanceKlass::oop_oop_iterate_nv(oop, FastScanClosure*)+0x31
V [libjvm.so+0x99a83a] ContiguousSpace::oop_since_save_marks_iterate_nv(FastScanClosure*)+0x6a
V [libjvm.so+0x3f2272] DefNewGeneration::oop_since_save_marks_iterate_nv(FastScanClosure*)+0x42
V [libjvm.so+0x4f352a] GenCollectedHeap::oop_since_save_marks_iterate(GenCollectedHeap::GenerationType, FastScanClosure*, FastScanClosure*)+0x4a
V [libjvm.so+0x3f4cf2] DefNewGeneration::collect(bool, bool, unsigned int, bool)+0x662
V [libjvm.so+0x4f29bb] GenCollectedHeap::collect_generation(Generation*, bool, unsigned int, bool, bool, bool, bool)+0x22b
V [libjvm.so+0x4f4f0f] GenCollectedHeap::do_collection(bool, bool, unsigned int, bool, GenCollectedHeap::GenerationType)+0x66f
V [libjvm.so+0x3509e1] GenCollectorPolicy::satisfy_failed_allocation(unsigned int, bool)+0xe1
V [libjvm.so+0xa93dac] VM_GenCollectForAllocation::doit()+0xbc
V [libjvm.so+0xabd7e7] VM_Operation::evaluate()+0x97
V [libjvm.so+0xabac05] VMThread::evaluate_operation(VM_Operation*)+0x145
V [libjvm.so+0xabb555] VMThread::loop()+0x4e5
V [libjvm.so+0xabb79c] VMThread::run()+0xcc
V [libjvm.so+0x89dc90] java_start(Thread*)+0xe0
C [libpthread.so.0+0x6a49]