StreamCorruptedException at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject and NullPointerException at org.jboss.as.clustering.lock in clustered JBoss EAP 6

Issue

The following exception occurred in clustered JBoss EAP 6. What cause this issue?

• java.lang.NullPointerException at org.jboss.as.clustering.lock:

ERROR [org.apache.catalina.connector] (ajp-executor-threads - 19) JBWEB001018: An exception or error occurred in the container during the request processing: java.lang.NullPointerException
        at org.jboss.as.clustering.lock.AbstractClusterLockSupport.lock(AbstractClusterLockSupport.java:157)
        at org.jboss.as.clustering.lock.SharedLocalYieldingClusterLockManager.lock(SharedLocalYieldingClusterLockManager.java:436)
        at org.jboss.as.clustering.web.infinispan.DistributedCacheManager.acquireSessionOwnership(DistributedCacheManager.java:400)
        at org.jboss.as.web.session.ClusteredSession.acquireSessionOwnership(ClusteredSession.java:520) [jboss-as-web-7.2.1.Final-redhat-10.jar:7.2.1.Final-redhat-10]
        at org.jboss.as.web.session.ClusteredSession.access(ClusteredSession.java:488) [jboss-as-web-7.2.1.Final-redhat-10.jar:7.2.1.Final-redhat-10]
        at org.apache.catalina.connector.Request.doGetSession(Request.java:2616) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
        at org.apache.catalina.connector.Request.getSession(Request.java:2361) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
        at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:99) [jboss-as-web-7.2.1.Final-redhat-10.jar:7.2.1.Final-redhat-10]
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:145) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:97) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
        at org.jboss.as.web.sso.ClusteredSingleSignOn.invoke(ClusteredSingleSignOn.java:356) [jboss-as-web-7.2.1.Final-redhat-10.jar:7.2.1.Final-redhat-10]
        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:559) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:102) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:336) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
        at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:488) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
        at org.apache.coyote.ajp.AjpProtocol$AjpConnectionHandler.process(AjpProtocol.java:420) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
        at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:508) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
        at org.jboss.threads.SimpleDirectExecutor.execute(SimpleDirectExecutor.java:33)
        at org.jboss.threads.QueueExecutor.runTask(QueueExecutor.java:806)
        at org.jboss.threads.QueueExecutor.access$100(QueueExecutor.java:45)
        at org.jboss.threads.QueueExecutor$Worker.run(QueueExecutor.java:847)
        at java.lang.Thread.run(Thread.java:724) [rt.jar:1.7.0_25]
        at org.jboss.threads.JBossThread.run(JBossThread.java:122)

• java.io.StreamCorruptedException at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject:

WARN  [org.jboss.as.clustering] (Incoming-20,shared=test_02digitalization) JBAS010229: Partition web failed extracting message body from request bytes: java.io.StreamCorruptedException: Unexpected byte found when reading an object: 53
        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:755)
        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:213)
        at org.jboss.marshalling.river.RiverUnmarshaller.readFields(RiverUnmarshaller.java:1732)
        at org.jboss.marshalling.river.RiverObjectInputStream.defaultReadObject(RiverObjectInputStream.java:73)
        at java.net.InetSocketAddress.readObject(InetSocketAddress.java:187) [rt.jar:1.7.0_09-icedtea]
        at sun.reflect.GeneratedMethodAccessor47.invoke(Unknown Source) [:1.7.0_09-icedtea]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_09-icedtea]
        at java.lang.reflect.Method.invoke(Method.java:601) [rt.jar:1.7.0_09-icedtea]
        at org.jboss.marshalling.reflect.SerializableClass.callReadObject(SerializableClass.java:218)
        at org.jboss.marshalling.river.RiverUnmarshaller.doInitSerializable(RiverUnmarshaller.java:1635)
        at org.jboss.marshalling.river.RiverUnmarshaller.doReadNewObject(RiverUnmarshaller.java:1290)
        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:276)
        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:213)
        at org.jboss.marshalling.river.RiverUnmarshaller.readFields(RiverUnmarshaller.java:1732)
        at org.jboss.marshalling.river.RiverObjectInputStream.defaultReadObject(RiverObjectInputStream.java:73)
        at org.jboss.as.clustering.impl.ClusterNodeImpl.readObject(ClusterNodeImpl.java:142)
        at sun.reflect.GeneratedMethodAccessor50.invoke(Unknown Source) [:1.7.0_09-icedtea]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_09-icedtea]
        at java.lang.reflect.Method.invoke(Method.java:601) [rt.jar:1.7.0_09-icedtea]
        at org.jboss.marshalling.reflect.SerializableClass.callReadObject(SerializableClass.java:218)
        at org.jboss.marshalling.river.RiverUnmarshaller.doInitSerializable(RiverUnmarshaller.java:1629)
        at org.jboss.marshalling.river.RiverUnmarshaller.doReadNewObject(RiverUnmarshaller.java:1290)
        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:276)
        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:213)
        at org.jboss.marshalling.river.RiverUnmarshaller.doReadCollectionObject(RiverUnmarshaller.java:184)
        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObjectArray(RiverUnmarshaller.java:1557)
        at org.jboss.marshalling.river.RiverUnmarshaller.doReadArray(RiverUnmarshaller.java:1596)
        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:330)
        at org.jboss.marshalling.river.BlockUnmarshaller.readObject(BlockUnmarshaller.java:153)
        at org.jboss.marshalling.river.BlockUnmarshaller.readObject(BlockUnmarshaller.java:139)
        at org.jgroups.blocks.MethodCall.readExternal(MethodCall.java:430)
        at org.jboss.marshalling.river.RiverUnmarshaller.doReadNewObject(RiverUnmarshaller.java:1313)
        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:276)
        at org.jboss.marshalling.river.RiverUnmarshaller.doReadObject(RiverUnmarshaller.java:213)
        at org.jboss.marshalling.AbstractObjectInput.readObject(AbstractObjectInput.java:37)
        at org.jboss.as.clustering.impl.CoreGroupCommunicationService.objectFromByteBufferInternal(CoreGroupCommunicationService.java:865)
        at org.jboss.as.clustering.impl.CoreGroupCommunicationService$RpcHandler.handle(CoreGroupCommunicationService.java:1225)
        at org.jgroups.blocks.RequestCorrelator.handleRequest(RequestCorrelator.java:484)
        at org.jgroups.blocks.RequestCorrelator.receiveMessage(RequestCorrelator.java:391)
        at org.jgroups.blocks.RequestCorrelator.receive(RequestCorrelator.java:249)
        at org.jgroups.blocks.MessageDispatcher$ProtocolAdapter.up(MessageDispatcher.java:600)
        at org.jgroups.blocks.mux.MuxUpHandler.up(MuxUpHandler.java:99)
        at org.jgroups.JChannel.up(JChannel.java:707)
        at org.jgroups.stack.ProtocolStack.up(ProtocolStack.java:1025)
        at org.jgroups.protocols.RSVP.up(RSVP.java:188)
        at org.jgroups.protocols.FRAG2.up(FRAG2.java:181)
        at org.jgroups.protocols.FlowControl.up(FlowControl.java:400)
        at org.jgroups.protocols.FlowControl.up(FlowControl.java:418)
        at org.jgroups.protocols.pbcast.GMS.up(GMS.java:896)
        at org.jgroups.protocols.pbcast.STABLE.up(STABLE.java:245)
        at org.jgroups.protocols.UNICAST2.up(UNICAST2.java:453)
        at org.jgroups.protocols.pbcast.NAKACK.handleMessage(NAKACK.java:793)
        at org.jgroups.protocols.pbcast.NAKACK.up(NAKACK.java:609)
         at org.jgroups.protocols.BARRIER.up(BARRIER.java:126)
        at org.jgroups.protocols.VERIFY_SUSPECT.up(VERIFY_SUSPECT.java:147)
        at org.jgroups.protocols.FD.up(FD.java:253)
        at org.jgroups.protocols.FD_SOCK.up(FD_SOCK.java:288)
        at org.jgroups.protocols.MERGE2.up(MERGE2.java:205)
        at org.jgroups.protocols.Discovery.up(Discovery.java:359)
        at org.jgroups.protocols.TP$ProtocolAdapter.up(TP.java:2610)
        at org.jgroups.protocols.TP.passMessageUp(TP.java:1263)
        at org.jgroups.protocols.TP$IncomingPacket.handleMyMessage(TP.java:1825)
        at org.jgroups.protocols.TP$IncomingPacket.run(TP.java:1798)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) [rt.jar:1.7.0_09-icedtea]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) [rt.jar:1.7.0_09-icedtea]
        at java.lang.Thread.run(Thread.java:722) [rt.jar:1.7.0_09-icedtea]
Caused by: an exception which occurred:
        in field hostname
        in object of type java.net.InetSocketAddress
        in field socketAddress
        in object of type org.jboss.as.clustering.impl.ClusterNodeImpl
        in element at index [1] of size [2]
        in object of type org.jgroups.blocks.MethodCall