From https://community.jboss.org/thread/212070:

1. Hit the sales-post app (http://localhost:8080/sales-post/)
2. Login
3. Click on the global logout link
4. Click in the address bar and press enter to reload the IDP without resubmitting data
5. Login

On EAP 6.0.1 this results in the following error:

08:35:49,585 ERROR [org.jboss.as] (Controller Boot Thread) JBAS015875: JBoss EAP 6.0.1.GA (AS 7.1.3.Final-redhat-4) started (with errors) in 6762ms - Started 574 of 680 services (3 services failed or missing dependencies, 102 services are passive or on-demand)
08:36:14,055 ERROR [org.picketlink.identity.federation] (http-/127.0.0.1:8080-1) PLFED000253: Exception in processing request: org.picketlink.identity.federation.core.exceptions.ProcessingException: PLFED000102: Processing Exception
at org.picketlink.identity.federation.PicketLinkLoggerImpl.processingError(PicketLinkLoggerImpl.java:85) [picketlink-jbas7-2.1.3.1-redhat-1-bz-953972.jar:2.1.3.1-redhat-1]
at org.picketlink.identity.federation.core.saml.v2.util.DocumentUtil.getDocument(DocumentUtil.java:208) [picketlink-core-2.1.3.1-redhat-1-bz-953972.jar:2.1.3.1-redhat-1]
at org.picketlink.identity.federation.api.saml.v2.request.SAML2Request.getSAML2ObjectFromStream(SAML2Request.java:163) [picketlink-core-2.1.3.1-redhat-1-bz-953972.jar:2.1.3.1-redhat-1]
at org.picketlink.identity.federation.web.util.IDPWebRequestUtil.getSAMLDocumentHolder(IDPWebRequestUtil.java:123) [picketlink-core-2.1.3.1-redhat-1-bz-953972.jar:2.1.3.1-redhat-1]
at org.picketlink.identity.federation.bindings.tomcat.idp.AbstractIDPValve.processSAMLRequestMessage(AbstractIDPValve.java:505) [picketlink-jbas7-2.1.3.1-redhat-1-bz-953972.jar:2.1.3.1-redhat-1]
at org.picketlink.identity.federation.bindings.tomcat.idp.AbstractIDPValve.invoke(AbstractIDPValve.java:384) [picketlink-jbas7-2.1.3.1-redhat-1-bz-953972.jar:2.1.3.1-redhat-1]
at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:169) [jboss-as-web-7.1.3.Final-redhat-4.jar:7.1.3.Final-redhat-4]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) [jbossweb-7.0.17.Final-redhat-1.jar:]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.17.Final-redhat-1.jar:]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.17.Final-redhat-1.jar:]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:372) [jbossweb-7.0.17.Final-redhat-1.jar:]
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.17.Final-redhat-1.jar:]
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:679) [jbossweb-7.0.17.Final-redhat-1.jar:]
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:931) [jbossweb-7.0.17.Final-redhat-1.jar:]
at java.lang.Thread.run(Thread.java:619) [rt.jar:1.6.0_21]
Caused by: java.util.zip.ZipException: oversubscribed dynamic bit lengths tree
at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:147) [rt.jar:1.6.0_21]
at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:105) [rt.jar:1.6.0_21]
at org.apache.xerces.impl.XMLEntityManager$RewindableInputStream.read(Unknown Source)
at org.apache.xerces.impl.XMLEntityManager.setupCurrentEntity(Unknown Source)
at org.apache.xerces.impl.XMLVersionDetector.determineDocVersion(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.DOMParser.parse(Unknown Source)
at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source)
at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:124) [rt.jar:1.6.0_21]
at org.picketlink.identity.federation.core.saml.v2.util.DocumentUtil.getDocument(DocumentUtil.java:202) [picketlink-core-2.1.3.1-redhat-1-bz-953972.jar:2.1.3.1-redhat-1]
... 13 more

08:36:14,061 ERROR [org.apache.catalina.connector.CoyoteAdapter] (http-/127.0.0.1:8080-1) An exception or error occurred in the container during the request processing: java.lang.RuntimeException: PLFED000092: Null Value: Destination is null
at org.picketlink.identity.federation.PicketLinkLoggerImpl.nullValueError(PicketLinkLoggerImpl.java:106) [picketlink-jbas7-2.1.3.1-redhat-1-bz-953972.jar:2.1.3.1-redhat-1]
at org.picketlink.identity.federation.web.util.PostBindingUtil.sendPost(PostBindingUtil.java:101) [picketlink-core-2.1.3.1-redhat-1-bz-953972.jar:2.1.3.1-redhat-1]
at org.picketlink.identity.federation.web.util.IDPWebRequestUtil.send(IDPWebRequestUtil.java:231) [picketlink-core-2.1.3.1-redhat-1-bz-953972.jar:2.1.3.1-redhat-1]
at org.picketlink.identity.federation.bindings.tomcat.idp.AbstractIDPValve.processSAMLRequestMessage(AbstractIDPValve.java:641) [picketlink-jbas7-2.1.3.1-redhat-1-bz-953972.jar:2.1.3.1-redhat-1]
at org.picketlink.identity.federation.bindings.tomcat.idp.AbstractIDPValve.invoke(AbstractIDPValve.java:384) [picketlink-jbas7-2.1.3.1-redhat-1-bz-953972.jar:2.1.3.1-redhat-1]
at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:169) [jboss-as-web-7.1.3.Final-redhat-4.jar:7.1.3.Final-redhat-4]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) [jbossweb-7.0.17.Final-redhat-1.jar:]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.17.Final-redhat-1.jar:]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.17.Final-redhat-1.jar:]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:372) [jbossweb-7.0.17.Final-redhat-1.jar:]
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.17.Final-redhat-1.jar:]
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:679) [jbossweb-7.0.17.Final-redhat-1.jar:]
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:931) [jbossweb-7.0.17.Final-redhat-1.jar:]
at java.lang.Thread.run(Thread.java:619) [rt.jar:1.6.0_21]