While adding child channel to kickstart profile throws "Internal Server Error".

Issue

• Adding child channel to kickstart profile throws "Internal Server Error"

  javax.servlet.ServletException: Exception occurred inside getter of com.redhat.rhn.domain.channel.ClonedChannel.checksumType
  
  Caused by: org.hibernate.PropertyAccessException: Exception occurred inside getter of com.redhat.rhn.domain.channel.ClonedChannel.checksumType
  
  Caused by: java.lang.StackOverflowError
          at com.redhat.rhn.domain.channel.ClonedChannel.getChecksumType(ClonedChannel.java:54)
  

• Attempting to change the base channel of a kickstart profile fails with an Internal Server Error (ISE). catalina.out has :

2012-07-24 12:38:01,622 [TP-Processor3] WARN  org.apache.struts.action.RequestProcessor - Unhandled Exception thrown: class org.hibernate.PropertyAccessException
2012-07-24 12:38:01,626 [TP-Processor3] ERROR com.redhat.rhn.frontend.servlets.SessionFilter - Error during transaction. Rolling back
javax.servlet.ServletException: org.hibernate.PropertyAccessException: Exception occurred inside getter of com.redhat.rhn.domain.channel.ClonedChannel.checksumType
        at org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:520)
        at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:427)
        at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:228)
        at com.redhat.rhn.frontend.struts.RhnRequestProcessor.process(RhnRequestProcessor.java:99)
        at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
        at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at com.redhat.rhn.frontend.servlets.AuthFilter.doFilter(AuthFilter.java:119)
[..snip..]
        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
        at java.lang.Thread.run(Thread.java:736)
Caused by: 
org.hibernate.PropertyAccessException: Exception occurred inside getter of com.redhat.rhn.domain.channel.ClonedChannel.checksumType
        at org.hibernate.property.BasicPropertyAccessor$BasicGetter.get(BasicPropertyAccessor.java:171)
        at org.hibernate.tuple.entity.AbstractEntityTuplizer.getPropertyValues(AbstractEntityTuplizer.java:271)
        at org.hibernate.tuple.entity.PojoEntityTuplizer.getPropertyValues(PojoEntityTuplizer.java:244)
        at org.hibernate.persister.entity.AbstractEntityPersister.getPropertyValues(AbstractEntityPersister.java:3590)
        at org.hibernate.event.def.DefaultFlushEntityEventListener.getValues(DefaultFlushEntityEventListener.java:190)
        at org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:143)
        at org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:219)
        at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:99)
        at org.hibernate.event.def.DefaultAutoFlushEventListener.onAutoFlush(DefaultAutoFlushEventListener.java:58)
        at org.hibernate.impl.SessionImpl.autoFlushIfRequired(SessionImpl.java:999)
        at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1185)
        at org.hibernate.impl.QueryImpl.list(QueryImpl.java:102)
        at org.hibernate.impl.AbstractQueryImpl.uniqueResult(AbstractQueryImpl.java:835)
        at com.redhat.rhn.domain.kickstart.KickstartFactory.lookupKickstartCommandName(KickstartFactory.java:271)
        at com.redhat.rhn.domain.kickstart.KickstartFactory.createKickstartCommand(KickstartFactory.java:286)
        at com.redhat.rhn.manager.kickstart.KickstartWizardHelper.createCommand(KickstartWizardHelper.java:102)
        at com.redhat.rhn.manager.kickstart.KickstartWizardHelper.processSkipKey(KickstartWizardHelper.java:224)
        at com.redhat.rhn.manager.kickstart.KickstartEditCommand.updateRepos(KickstartEditCommand.java:388)
        at com.redhat.rhn.frontend.action.kickstart.KickstartSoftwareEditAction.processFormValues(KickstartSoftwareEditAction.java:230)
        at com.redhat.rhn.frontend.action.kickstart.BaseKickstartEditAction.execute(BaseKickstartEditAction.java:80)
        at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:425)
        ... 40 more
Caused by: 
java.lang.reflect.InvocationTargetException
        at sun.reflect.GeneratedMethodAccessor619.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:600)
        at org.hibernate.property.BasicPropertyAccessor$BasicGetter.get(BasicPropertyAccessor.java:168)
        ... 60 more
Caused by: 
java.lang.StackOverflowError
        at com.redhat.rhn.domain.channel.ClonedChannel.getChecksumType(ClonedChannel.java:57)