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Happens while inspecting the heap during Dcmd: GC.class_stats # # A fatal error has been detected by the Java Runtime Environment: # # Internal Error (/opt/jprt/T/P1/205639.cccheung/s/hotspot/src/share/vm/runtime/synchronizer.cpp:581), pid=13170, tid=140633204123392 # assert(Universe::verify_in_progress() || !SafepointSynchronize::is_at_safepoint()) failed: invariant # # JRE version: Java(TM) SE Runtime Environment (9.0) (build 1.9.0-internal-fastdebug-201410072056.cccheung.jdk9-hs-rt-b00) # Java VM: Java HotSpot(TM) 64-Bit Server VM (1.9.0-internal-fastdebug-201410072056.cccheung.jdk9-hs-rt-b00 mixed mode linux-amd64 compressed oops) # Core dump written. Default location: /scratch/local/aurora/sandbox/results/workDir/com/sun/management/DiagnosticCommandMBean/DcmdMBeanPermissionsTest/core or core.13170 # # If you would like to submit a bug report, please visit: # http://bugreport.sun.com/bugreport/crash.jsp # --------------- T H R E A D --------------- Current thread (0x00007fe7d818c000): VMThread [stack: 0x00007fe7b81ce000,0x00007fe7b82cf000] [id=13326] Stack: [0x00007fe7b81ce000,0x00007fe7b82cf000], sp=0x00007fe7b82ccf40, free space=1019k Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code) V [libjvm.so+0x10874a1] VMError::report_and_die()+0x151;; VMError::report_and_die()+0x151 V [libjvm.so+0x73d68b] report_vm_error(char const*, int, char const*, char const*)+0x7b;; report_vm_error(char const*, int, char const*, char const*)+0x7b V [libjvm.so+0xfb148f] ObjectSynchronizer::FastHashCode(Thread*, oop)+0x65f;; ObjectSynchronizer::FastHashCode(Thread*, oop)+0x65f V [libjvm.so+0xfb1985] ObjectSynchronizer::identity_hash_value_for(Handle)+0x45;; ObjectSynchronizer::identity_hash_value_for(Handle)+0x45 V [libjvm.so+0xdc65b0] oopDesc::slow_identity_hash()+0xc0;; oopDesc::slow_identity_hash()+0xc0 V [libjvm.so+0xbe58a2] Klass::external_name() const+0xf2;; Klass::external_name() const+0xf2 V [libjvm.so+0x8f6a3e] KlassInfoHisto::sort_helper(KlassInfoEntry**, KlassInfoEntry**)+0xce;; KlassInfoHisto::sort_helper(KlassInfoEntry**, KlassInfoEntry**)+0xce VM_Operation (0x00007fe7b2cea890): GC_HeapInspection, mode: safepoint, requested by thread 0x00007fe7d8363800
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