crash on linux platform. Occured few times during jimage refresh testing.


STDOUT:
#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x4024a60f, pid=12155, tid=0x633d2b90
#
# JRE version: Java(TM) SE Runtime Environment (9.0) (build 1.9.0-internal-20150623131133.jdenise.jdk-pit-0623-subs-b00)
# Java VM: Java HotSpot(TM) Client VM (1.9.0-internal-20150623131133.jdenise.jdk-pit-0623-subs-b00 mixed mode, sharing linux-x86 )
# Problematic frame:
# V [libjvm.so+0x21d60f] DefNewGeneration::copy_to_survivor_space(oopDesc*)+0xf
#


V [libjvm.so+0x21d60f] DefNewGeneration::copy_to_survivor_space(oopDesc*)+0xf
V [libjvm.so+0x2a70a4] InstanceKlass::oop_oop_iterate_nv(oopDesc*, FastScanClosure*)+0xd4
V [libjvm.so+0x510e3e] ContiguousSpace::oop_since_save_marks_iterate_nv(FastScanClosure*)+0x3e
V [libjvm.so+0x21b712] DefNewGeneration::oop_since_save_marks_iterate_nv(FastScanClosure*)+0x42
V [libjvm.so+0x2a327a] GenCollectedHeap::oop_since_save_marks_iterate(GenCollectedHeap::GenerationType, FastScanClosure*, FastScanClosure*)+0x4a
V [libjvm.so+0x21c80a] DefNewGeneration::collect(bool, bool, unsigned int, bool)+0x4da
V [libjvm.so+0x2a215e] GenCollectedHeap::collect_generation(Generation*, bool, unsigned int, bool, bool, bool, bool)+0x1ce
V [libjvm.so+0x2a2865] GenCollectedHeap::do_collection(bool, bool, unsigned int, bool, GenCollectedHeap::GenerationType)+0x495
V [libjvm.so+0x1c3d93] GenCollectorPolicy::satisfy_failed_allocation(unsigned int, bool)+0xa3
V [libjvm.so+0x5ae362] VM_GenCollectForAllocation::doit()+0x82
V [libjvm.so+0x5b3f98] VM_Operation::evaluate()+0x48
V [libjvm.so+0x5b2638] VMThread::evaluate_operation(VM_Operation*)+0xc8
V [libjvm.so+0x5b29e5] VMThread::loop()+0x1e5
V [libjvm.so+0x5b2e4b] VMThread::run()+0x8b
V [libjvm.so+0x481768] java_start(Thread*)+0xd8