Deadlock in JBoss' StatefulSessionFilePersistenceManager when passivating stateful session beans

Issue

Our JBoss instance reported a deadlock in JBoss EJB code, when one thread was accessing a passivated SFSB and another thread was creating a new SFSB instance.

"WorkerThread#1[127.0.0.1:49210]":
        at org.jboss.ejb3.cache.simple.SimpleStatefulCache.get(SimpleStatefulCache.java:472)
        - waiting to lock <0x00000000fdba4c68> (a org.jboss.ejb3.cache.simple.SimpleStatefulCache$CacheMap)
        - locked <0x00000000fdba5cd8> (a org.jboss.ejb3.cache.simple.StatefulSessionFilePersistenceManager)
        at org.jboss.ejb3.cache.simple.SimpleStatefulCache.get(SimpleStatefulCache.java:430)
        at org.jboss.ejb3.stateful.StatefulInstanceInterceptor.invoke(StatefulInstanceInterceptor.java:59)
        at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
        at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79)
        at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:190)
        at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
        at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
        at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
        at org.jboss.ejb3.tx.NullInterceptor.invoke(NullInterceptor.java:42)
        at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
        at org.jboss.ejb3.security.RoleBasedAuthorizationInterceptorv2.invoke(RoleBasedAuthorizationInterceptorv2.java:201)
        at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
        at org.jboss.ejb3.security.Ejb3AuthenticationInterceptorv2.invoke(Ejb3AuthenticationInterceptorv2.java:182)
        at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
        at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:41)
        at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
        at org.jboss.ejb3.BlockContainerShutdownInterceptor.invoke(BlockContainerShutdownInterceptor.java:67)
        at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
        at org.jboss.ejb3.core.context.CurrentInvocationContextInterceptor.invoke(CurrentInvocationContextInterceptor.java:47)
        at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
        at org.jboss.aspects.currentinvocation.CurrentInvocationInterceptor.invoke(CurrentInvocationInterceptor.java:67)
        at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
        at org.jboss.ejb3.interceptor.EJB3TCCLInterceptor.invoke(EJB3TCCLInterceptor.java:86)
        at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
        at org.jboss.ejb3.stateful.StatefulContainer.dynamicInvoke(StatefulContainer.java:569)
        at org.jboss.ejb3.session.InvokableContextClassProxyHack._dynamicInvoke(InvokableContextClassProxyHack.java:53)
        at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:91)
        at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82)
        at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:967)
        at org.jboss.remoting.transport.socket.ServerThread.completeInvocation(ServerThread.java:791)
        - locked <0x00000000f1f4dcf0> (a org.jboss.remoting.transport.socket.ServerThread)
        at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:744)
        at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:548)
        at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:234)
"WorkerThread#0[127.0.0.1:65439]":
        at org.jboss.ejb3.cache.simple.SimpleStatefulCache.passivate(SimpleStatefulCache.java:382)
        - waiting to lock <0x00000000fdba5cd8> (a org.jboss.ejb3.cache.simple.StatefulSessionFilePersistenceManager)
        at org.jboss.ejb3.cache.simple.SimpleStatefulCache$CacheMap.removeEldestEntry(SimpleStatefulCache.java:96)
        - locked <0x00000000f353a9c0> (a org.jboss.ejb3.stateful.StatefulBeanContext)
        at java.util.LinkedHashMap.addEntry(LinkedHashMap.java:410)
        at java.util.HashMap.put(HashMap.java:385)
        at org.jboss.ejb3.cache.simple.SimpleStatefulCache.create(SimpleStatefulCache.java:409)
        - locked <0x00000000fdba4c68> (a org.jboss.ejb3.cache.simple.SimpleStatefulCache$CacheMap)
        at org.jboss.ejb3.stateful.StatefulContainer.createSession(StatefulContainer.java:406)
        at org.jboss.ejb3.session.SessionContainer.createSession(SessionContainer.java:673)

       at 
org.jboss.ejb3.proxy.impl.factory.session.stateful.StatefulSessionProxyFactoryBase.getNewSessionId(StatefulSessionProxyFactoryBase.java:276)

       at 
org.jboss.ejb3.proxy.impl.factory.session.stateful.StatefulSessionProxyFactoryBase.createProxyBusiness(StatefulSessionProxyFactoryBase.java:140)
        at sun.reflect.GeneratedMethodAccessor318.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:121)
        at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82)
        at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:967)
        at org.jboss.remoting.transport.socket.ServerThread.completeInvocation(ServerThread.java:791)
        - locked <0x00000000f170e008> (a org.jboss.remoting.transport.socket.ServerThread)
        at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:744)
        at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:548)
        at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:234)