JVM crash in DumperSupport::dump_field_value when using G1GC
Issue
When we use jmap to take a heap dump, the target java process crashes. The fatal error log contains:
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x58c276] DumperSupport::dump_field_value(DumpWriter*, char, unsigned char*)+0x1c6
V [libjvm.so+0x58d22a] DumperSupport::dump_instance_fields(DumpWriter*, oopDesc*)+0x24a
V [libjvm.so+0x58de6b] DumperSupport::dump_instance(DumpWriter*, oopDesc*)+0xfb
V [libjvm.so+0x58f354] HeapObjectDumper::do_object(oopDesc*)+0x124
V [libjvm.so+0x8c917a] ContiguousSpace::object_iterate_from(WaterMark, ObjectClosure*)+0x7a
V [libjvm.so+0x52fe00] IterateObjectClosureRegionClosure::doHeapRegion(HeapRegion*)+0x20
V [libjvm.so+0x59b0a9] HeapRegionSeq::iterate(HeapRegionClosure*) const+0x49
V [libjvm.so+0x531fc9] G1CollectedHeap::safe_object_iterate(ObjectClosure*)+0x39
V [libjvm.so+0x590dac] VM_HeapDumper::doit()+0x29c
V [libjvm.so+0x99bd25] VM_Operation::evaluate()+0x55
V [libjvm.so+0x99a15a] VMThread::evaluate_operation(VM_Operation*)+0xba
V [libjvm.so+0x99a4de] VMThread::loop()+0x1ce
V [libjvm.so+0x99a950] VMThread::run()+0x70
V [libjvm.so+0x815668] java_start(Thread*)+0x108
Environment
- Java 1.7 update 79 and earlier
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