On OSX (and I believe only aarch64), the following failure has been entered multiple times into JDK-8270202, which was intended to just cover ZGC failures, so I'm creating this CR to cover this issue:

 sun.jvm.hotspot.debugger.UnmappedAddressException: 7001000800
at jdk.hotspot.agent/sun.jvm.hotspot.debugger.PageCache.checkPage(PageCache.java:208)
at jdk.hotspot.agent/sun.jvm.hotspot.debugger.PageCache.getLong(PageCache.java:100)
at jdk.hotspot.agent/sun.jvm.hotspot.debugger.DebuggerBase.readCInteger(DebuggerBase.java:356)
at jdk.hotspot.agent/sun.jvm.hotspot.debugger.DebuggerBase.readAddressValue(DebuggerBase.java:382)
at jdk.hotspot.agent/sun.jvm.hotspot.debugger.bsd.BsdDebuggerLocal.readAddress(BsdDebuggerLocal.java:421)
at jdk.hotspot.agent/sun.jvm.hotspot.debugger.bsd.BsdAddress.getAddressAt(BsdAddress.java:73)
at jdk.hotspot.agent/sun.jvm.hotspot.types.basic.BasicTypeDataBase.findDynamicTypeForAddress(BasicTypeDataBase.java:238)
at jdk.hotspot.agent/sun.jvm.hotspot.runtime.VirtualBaseConstructor.instantiateWrapperFor(VirtualBaseConstructor.java:104)
at jdk.hotspot.agent/sun.jvm.hotspot.oops.Metadata.instantiateWrapperFor(Metadata.java:78)
at jdk.hotspot.agent/sun.jvm.hotspot.oops.MetadataField.getValue(MetadataField.java:43)
at jdk.hotspot.agent/sun.jvm.hotspot.oops.MetadataField.getValue(MetadataField.java:40)
at jdk.hotspot.agent/sun.jvm.hotspot.classfile.ClassLoaderData.getKlasses(ClassLoaderData.java:82)
at jdk.hotspot.agent/sun.jvm.hotspot.classfile.ClassLoaderData.classesDo(ClassLoaderData.java:101)
at jdk.hotspot.agent/sun.jvm.hotspot.classfile.ClassLoaderDataGraph.classesDo(ClassLoaderDataGraph.java:84)
at jdk.hotspot.agent/sun.jvm.hotspot.utilities.HeapHprofBinWriter.writeSymbols(HeapHprofBinWriter.java:1206)
at jdk.hotspot.agent/sun.jvm.hotspot.utilities.HeapHprofBinWriter.write(HeapHprofBinWriter.java:454)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.JMap.writeHeapHprofBin(JMap.java:216)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.JMap.run(JMap.java:103)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.Tool.startInternal(Tool.java:278)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.Tool.start(Tool.java:241)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.Tool.execute(Tool.java:134)
at jdk.hotspot.agent/sun.jvm.hotspot.tools.JMap.main(JMap.java:202)
at jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.runJMAP(SALauncher.java:340)
at jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.main(SALauncher.java:500)