JCA dead-lock in JBoss EAP

Issue

The following dead-lock was discovered in the jstack dumps of our application:

Found one Java-level deadlock:
=============================
"WorkManager(2)-28127396":
  waiting to lock monitor 0x0000000105b7e2a8 (object 0xfffffffb7bd52be8, a com.arjuna.ats.internal.jta.transaction.arjunacore.AtomicAction),
  which is held by "Thread-3"
"Thread-3":
  waiting for ownable synchronizer 0xfffffffb7bd51b58, (a java.util.concurrent.locks.ReentrantLock$NonfairSync),
  which is held by "WorkManager(2)-28127396"

Java stack information for the threads listed above:
===================================================
"WorkManager(2)-28127396":
        at com.arjuna.ats.arjuna.coordinator.BasicAction.Abort(BasicAction.java:1879)
        - waiting to lock <0xfffffffb7bd52be8> (a com.arjuna.ats.internal.jta.transaction.arjunacore.AtomicAction)
        at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.cancel(TwoPhaseCoordinator.java:105)
        at com.arjuna.ats.arjuna.AtomicAction.abort(AtomicAction.java:201)
        at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.commitAndDisassociate(TransactionImple.java:1395)
        at com.arjuna.ats.internal.jta.transaction.arjunacore.BaseTransaction.commit(BaseTransaction.java:134)
        at com.arjuna.ats.jbossatx.BaseTransactionManagerDelegate.commit(BaseTransactionManagerDelegate.java:87)
        at org.jboss.soa.esb.listeners.jca.EndpointProxy.endTransaction(EndpointProxy.java:384)
        at org.jboss.soa.esb.listeners.jca.EndpointProxy.delivery(EndpointProxy.java:264)
        at org.jboss.soa.esb.listeners.jca.EndpointProxy.invoke(EndpointProxy.java:145)
        at $Proxy70.onMessage(Unknown Source)
        at org.jboss.resource.adapter.jms.inflow.JmsServerSession.onMessage(JmsServerSession.java:179)
        at org.jboss.jms.client.container.ClientConsumer.callOnMessageStatic(ClientConsumer.java:166)
        at org.jboss.jms.client.container.SessionAspect.handleRun(SessionAspect.java:831)
        at org.jboss.aop.advice.org.jboss.jms.client.container.SessionAspect14.invoke(SessionAspect14.java)
        at org.jboss.jms.client.delegate.ClientSessionDelegate$run_N8003352271541955702.invokeNext(ClientSessionDelegate$run_N8003352271541955702.java)
        at org.jboss.jms.client.container.ClosedInterceptor.invoke(ClosedInterceptor.java:172)
        at org.jboss.aop.advice.PerInstanceInterceptor.invoke(PerInstanceInterceptor.java:105)
        at org.jboss.jms.client.delegate.ClientSessionDelegate$run_N8003352271541955702.invokeNext(ClientSessionDelegate$run_N8003352271541955702.java)
        at org.jboss.jms.client.delegate.ClientSessionDelegate.run(ClientSessionDelegate.java)
        at org.jboss.jms.client.JBossSession.run(JBossSession.java:199)
        at org.jboss.resource.adapter.jms.inflow.JmsServerSession.run(JmsServerSession.java:239)
        at org.jboss.resource.work.WorkWrapper.execute(WorkWrapper.java:213)
        at org.jboss.util.threadpool.BasicTaskWrapper.run(BasicTaskWrapper.java:275)
        at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:756)
        at java.lang.Thread.run(Thread.java:662)

"Thread-3":
        at sun.misc.Unsafe.park(Native Method)
        - parking to wait for  <0xfffffffb7bd51b58> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:158)
        at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:811)
        at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:842)
        at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1178)
        at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:186)
        at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:262)
        at org.jboss.resource.adapter.jdbc.BaseWrapperManagedConnection.lock(BaseWrapperManagedConnection.java:255)
        at org.jboss.resource.adapter.jdbc.xa.XAManagedConnection.end(XAManagedConnection.java:153)
        at org.jboss.resource.connectionmanager.xa.JcaXAResourceWrapper.end(JcaXAResourceWrapper.java:58)
        at com.arjuna.ats.internal.jta.resources.arjunacore.XAResourceRecord.topLevelAbort(XAResourceRecord.java:397)
        at com.arjuna.ats.arjuna.coordinator.BasicAction.doAbort(BasicAction.java:3231)
        at com.arjuna.ats.arjuna.coordinator.BasicAction.doAbort(BasicAction.java:3209)
        at com.arjuna.ats.arjuna.coordinator.BasicAction.Abort(BasicAction.java:1931)
        - locked <0xfffffffb7bd52be8> (a com.arjuna.ats.internal.jta.transaction.arjunacore.AtomicAction)
        at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.cancel(TwoPhaseCoordinator.java:105)
        at com.arjuna.ats.arjuna.AtomicAction.cancel(AtomicAction.java:230)
        at com.arjuna.ats.arjuna.coordinator.TransactionReaper.check(TransactionReaper.java:201)
        at com.arjuna.ats.internal.arjuna.coordinator.ReaperThread.run(ReaperThread.java:107)

Found 1 deadlock.