# assert(Universe::verify_in_progress() || DumpSharedSpaces || !SafepointSynchronize::is_at_safepoint()) failed: invariant

Current thread (0x0000000000461000): GCTaskThread "ParGC Thread#2" [stack: 0xffff80ffbe7ce000,0xffff80ffbe8ce000] [id=5]

Stack: [0xffff80ffbe7ce000,0xffff80ffbe8ce000], sp=0xffff80ffbe8cae90, free space=1011k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x219b70a] void VMError::report(outputStream*,bool)+0xfca
V [libjvm.so+0x219d983] void VMError::report_and_die(int,const char*,const char*,__va_list_element*,Thread*,unsigned char*,void*,void*,const char*,int,unsigned long)+0x8e3
V [libjvm.so+0x219d032] void VMError::report_and_die(Thread*,const char*,int,const char*,const char*,__va_list_element*)+0x42
V [libjvm.so+0x15007e9] void report_vm_error(const char*,int,const char*,const char*,...)+0xf9
V [libjvm.so+0x208bae2] long ObjectSynchronizer::FastHashCode(Thread*,oop)+0x1f2
V [libjvm.so+0x208c0f1] long ObjectSynchronizer::identity_hash_value_for(Handle)+0xb1
V [libjvm.so+0x1e18d0a] long oopDesc::slow_identity_hash()+0x1aa
V [libjvm.so+0x1b7aea3] const char*Klass::external_name()const+0x133
V [libjvm.so+0x1f38bba] void PSScavengeKlassClosure::do_klass(Klass*)+0x13a
V [libjvm.so+0x135c8da] void ClassLoaderData::classes_do(KlassClosure*)+0x2a
V [libjvm.so+0x13603d2] void ClassLoaderDataGraph::oops_do(OopClosure*,KlassClosure*,bool)+0x72
V [libjvm.so+0x1f379ff] void ScavengeRootsTask::do_it(GCTaskManager*,unsigned)+0x12f
V [libjvm.so+0x1711ade] void GCTaskThread::run()+0x3ce
V [libjvm.so+0x1e39cd8] thread_native_entry+0x168
C [libc.so.1+0x1251f1] _thrp_setup+0xa5
C [libc.so.1+0x125490] _lwp_start+0x0