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