The hs_err head is:
#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00007feef03cc58c, pid=16624, tid=0x00007feeb26e6700
#
# JRE version: Java(TM) SE Runtime Environment (8.0_112-b01) (build 1.8.0_112-ea-fastdebug-langtools-nightly-h8723-20160526-b01)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.112-b01-fastdebug mixed mode linux-amd64 compressed oops)
# Problematic frame:
# V [libjvm.so+0xcd758c] Metadata::mark_on_stack(Metadata*)+0xc
#
# Core dump written. Default location: /export/local/aurora/sandbox/results/ResultDir/anonymous-simple/core or core.16624
#
# 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 (0x00007feee813b000): VMThread [stack: 0x00007feeb25e6000,0x00007feeb26e7000] [id=16715]

siginfo: si_signo: 11 (SIGSEGV), si_code: 1 (SEGV_MAPERR), si_addr: 0x0000000000000073

Registers:
RAX=0x000000000000002b, RBX=0x0000000000000000, RCX=0x0000000000000000, RDX=0x00007feed95887a0
RSP=0x00007feeb26e4da0, RBP=0x00007feeb26e4da0, RSI=0x0000000000000001, RDI=0x00007feea9257e08
R8 =0x00007feed95885ed, R9 =0x00007feef078dd80, R10=0x0000000000000000, R11=0x00007feef03e4020
R12=0x00007feeb26e4e28, R13=0x00007feed9588450, R14=0x00007feef03cc580, R15=0x00007feeb26e4db0
RIP=0x00007feef03cc58c, EFLAGS=0x0000000000010282, CSGSFS=0x0000000000000033, ERR=0x0000000000000004
  TRAPNO=0x000000000000000e

Top of Stack: (sp=0x00007feeb26e4da0)
0x00007feeb26e4da0: 00007feeb26e4e80 00007feef043674b
0x00007feeb26e4db0: 00007feef0d2e850 0000000000000000
0x00007feeb26e4dc0: 00007feed9588582 00007feed95885b0
0x00007feeb26e4dd0: 00007feed9588450 00007feed95885ec
0x00007feeb26e4de0: 0000000000000060 0000000000000000
0x00007feeb26e4df0: 0000000000000000 00007feed95885c0
0x00007feeb26e4e00: 00007feed95885c0 00007feed95886e0
0x00007feeb26e4e10: 00007feed95885c0 00007feed95886e0
0x00007feeb26e4e20: 00007feed9588798 00007feef0d65210
0x00007feeb26e4e30: 00007feeb26e4db0 0000000000000000
0x00007feeb26e4e40: 0000000000000000 00007feee800b000
0x00007feeb26e4e50: 00007fedc8003001 00007feed9588450
0x00007feeb26e4e60: 00007feed9588450 00007feef0e0b678
0x00007feeb26e4e70: 00007feef03cc620 0000000000000001
0x00007feeb26e4e80: 00007feeb26e4eb0 00007feeefd60db9
0x00007feeb26e4e90: 0000000000000001 00007feee80577c0
0x00007feeb26e4ea0: 00007feeb26e4ee0 00007feee80577c0
0x00007feeb26e4eb0: 00007feeb26e4ed0 00007feef03cc308
0x00007feeb26e4ec0: 000000008023ee90 0000000000000001
0x00007feeb26e4ed0: 00007feeb26e4f10 00007feeefd36566
0x00007feeb26e4ee0: 00007feef0d5fb50 00007feef0dfa8d4
0x00007feeb26e4ef0: 00007feef0dfa8d4 0000000000000000
0x00007feeb26e4f00: 00007feee80577c0 0000000000040001
0x00007feeb26e4f10: 00007feeb26e4f80 00007feeefd38255
0x00007feeb26e4f20: 00007feeb26e4f50 00007feeb26e4f40
0x00007feeb26e4f30: 010000052b724b02 00007feef0e11430
0x00007feeb26e4f40: 000000008023ee90 00007feef0491caf
0x00007feeb26e4f50: 00000000002ca8d9 00007feef0e11430
0x00007feeb26e4f60: 00007feeb26e515c 00007feeb26e5030
0x00007feeb26e4f70: 0000000000000017 00007feee812eb50
0x00007feeb26e4f80: 00007feeb26e4fc0 00007feef063a307
0x00007feeb26e4f90: 00007f0500000007 00007feeb26e5060

Instructions: (pc=0x00007feef03cc58c)
0x00007feef03cc56c: a6 02 00 00 e8 5b d2 a5 ff e8 d6 a0 0b 00 e9 d2
0x00007feef03cc57c: fe ff ff 90 55 48 8b 07 be 01 00 00 00 48 89 e5
0x00007feef03cc58c: 4c 8b 58 48 c9 41 ff e3 90 90 90 90 90 90 90 90
0x00007feef03cc59c: 90 90 90 90 55 48 8d 47 08 48 89 e5 48 89 5d f0

Register to memory mapping:

RAX=0x000000000000002b is an unknown value
RBX=0x0000000000000000 is an unknown value
RCX=0x0000000000000000 is an unknown value
RDX=0x00007feed95887a0 is at entry_point+480 in (nmethod*)0x00007feed9588450

[error occurred during error reporting (printing register info), id 0xb]

Stack: [0x00007feeb25e6000,0x00007feeb26e7000], sp=0x00007feeb26e4da0, free space=1019k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0xcd758c] Metadata::mark_on_stack(Metadata*)+0xc
V [libjvm.so+0xd4174b] nmethod::metadata_do(void (*)(Metadata*))+0x23b
V [libjvm.so+0x66bdb9] CodeCache::alive_nmethods_do(void (*)(nmethod*))+0xa9
V [libjvm.so+0xcd7308] MetadataOnStackMark::MetadataOnStackMark(bool)+0x98
V [libjvm.so+0x641566] ClassLoaderDataGraph::clean_metaspaces()+0x26
V [libjvm.so+0x643255] ClassLoaderDataGraph::do_unloading(BoolObjectClosure*, bool)+0x195
V [libjvm.so+0xf45307] SystemDictionary::do_unloading(BoolObjectClosure*, bool)+0x17
V [libjvm.so+0xe31ed6] PSParallelCompact::marking_phase(ParCompactionManager*, bool, ParallelOldTracer*)+0x5c6
V [libjvm.so+0xe3de2e] PSParallelCompact::invoke_no_policy(bool)+0x5be
V [libjvm.so+0xe3ee3b] PSParallelCompact::invoke(bool)+0xfb
V [libjvm.so+0x66e39f] CollectedHeap::collect_as_vm_thread(GCCause::Cause)+0x1df
V [libjvm.so+0x101a02d] VM_CollectForMetadataAllocation::doit()+0x1cd
V [libjvm.so+0x1045b65] VM_Operation::evaluate()+0xa5
V [libjvm.so+0x1043457] VMThread::evaluate_operation(VM_Operation*)+0x137
V [libjvm.so+0x1043f40] VMThread::loop()+0x660
V [libjvm.so+0x1044170] VMThread::run()+0xb0
V [libjvm.so+0xd9b8e8] java_start(Thread*)+0x108

VM_Operation (0x00007feeef6f1cf0): CollectForMetadataAllocation, mode: safepoint, requested by thread 0x00007feee800b000