Deadlock : quickfix.SessionState.setLastSentTime(SessionState.java:145)

Hi team,

We have an production issue because of deadlock in quickfixj.
I searched in your JIRA and found this ticket : QFJ-645 that is very similar issue but i did not understand the solution.
Can someone advise ?

2016-05-13 13:49:07,162 [FrequentSched-1] ERROR TaUtils detectDeadLocks - DeadLock detected "TA-CRX-JPMC-WL_trading" Id=447 WAITING on java.util.concurrent.locks.ReentrantLock$NonfairSync@366414ce owned by "TMS2InFCStoneUS_streaming" Id=364
at sun.misc.Unsafe.park(Native Method)
waiting on java.util.concurrent.locks.ReentrantLock$NonfairSync@366414ce
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199)
at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:209)
at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:285)
at quickfix.SessionState.lockSenderMsgSeqNum(SessionState.java:338)
...
2016-05-13 13:49:07,162 [FrequentSched-1] ERROR TaUtils detectDeadLocks - DeadLock detected "TMS2InFCStoneUS_streaming" Id=364 BLOCKED on quickfix.Session@2f7fe578 owned by "TA-CRX-JPMC-WL_trading" Id=447
at quickfix.SessionState.setLastSentTime(SessionState.java:145)
blocked on quickfix.Session@2f7fe578
at quickfix.Session.initializeHeader(Session.java:680)
at quickfix.Session.sendRaw(Session.java:2304)
at quickfix.Session.send(Session.java:2402)
at quickfix.Session.sendToTarget(Session.java:636)
at com.tradair.tnet.driver.fix.client.FixClient.sendRequest(FixClient.java:462)
at com.tradair.tnet.driver.Driver.handleMessages(Driver.java:408)
at com.tradair.tnet.driver.Driver.run(Driver.java:299)
...