We are running jenkins and it is getting dead locked.

Here is the thread dump. What can we do?

"Jenkins initialization thread" #12 prio=5 os_prio=0 tid=0x00007f94f8ae1800 nid=0x1a in Object.wait() [0x00007f94e0163000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:502)
at org.jvnet.hudson.reactor.Reactor.execute(Reactor.java:267)

• locked <0x0000000083561630> (a jenkins.model.Jenkins$8)
  at jenkins.InitReactorRunner.run(InitReactorRunner.java:44)
  at jenkins.model.Jenkins.executeReactor(Jenkins.java:937)
  at jenkins.model.Jenkins.<init>(Jenkins.java:818)
  at hudson.model.Hudson.<init>(Hudson.java:83)
  at hudson.model.Hudson.<init>(Hudson.java:79)
  at hudson.WebAppMain$3.run(WebAppMain.java:225)

"Java2D Disposer" #11 daemon prio=10 os_prio=0 tid=0x00007f94f8a06000 nid=0x19 in Object.wait() [0x00007f94e8109000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)

• waiting on <0x000000008355e6b8> (a java.lang.ref.ReferenceQueue$Lock)
  at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143)
• locked <0x000000008355e6b8> (a java.lang.ref.ReferenceQueue$Lock)
  at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164)
  at sun.java2d.Disposer.run(Disposer.java:148)
  at java.lang.Thread.run(Thread.java:745)

"HashSessionScavenger-0" #10 daemon prio=5 os_prio=0 tid=0x00007f94f8918800 nid=0x18 in Object.wait() [0x00007f94e840a000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
at java.util.TimerThread.mainLoop(Timer.java:552)

• locked <0x00000000830cdbb8> (a java.util.TaskQueue)
  at java.util.TimerThread.run(Timer.java:505)

Thanks