A DESCRIPTION OF THE PROBLEM :
Stack: [0x00007fc02dcf8000,0x00007fc02ddf8000], sp=0x00007fc02ddf61b0, free space=1016k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x98c0a6] PSParallelCompact::IsAliveClosure::do_object_b(oopDesc*)+0x36
V [libjvm.so+0x8c8f6c] MethodData::clean_extra_data(BoolObjectClosure*)+0x1dc
V [libjvm.so+0x648cf6] InstanceKlass::clean_weak_instanceklass_links(BoolObjectClosure*)+0x56
V [libjvm.so+0x7d0d9e] Klass::clean_weak_klass_links(BoolObjectClosure*, bool)+0x18e
V [libjvm.so+0x98dea1] PSParallelCompact::marking_phase(ParCompactionManager*, bool, ParallelOldTracer*)+0x4e1
V [libjvm.so+0x99303e] PSParallelCompact::invoke_no_policy(bool)+0x40e
V [libjvm.so+0x998f1d] PSScavenge::invoke()+0x1ad
V [libjvm.so+0x94f880] ParallelScavengeH