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  1. Undertow
  2. UNDERTOW-1012

NPE when removing node

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    Description

      Issue:
      NullPointerException when unregistering node from proxy balancer
      Reproduce:

      1. Set up undertow proxy balancer and worker
      2. Unregister node(context) -> Register node(context) -> Repeat

      Exceptions:

      2017-03-06 09:53:02,531 INFO  [io.undertow] (default task-52) UT005044: Removing node jboss-eap-7.1-1
2017-03-06 09:53:02,532 ERROR [io.undertow.client] (default I/O-4) UT005001: An exception occurred processing the request: java.lang.NullPointerException
	at io.undertow.protocols.ssl.SslConduit.doUnwrap(SslConduit.java:717)
	at io.undertow.protocols.ssl.SslConduit.read(SslConduit.java:567)
	at org.xnio.conduits.PushBackStreamSourceConduit.read(PushBackStreamSourceConduit.java:52)
	at org.xnio.conduits.ConduitStreamSourceChannel.read(ConduitStreamSourceChannel.java:127)
	at io.undertow.client.http.HttpClientConnection$ClientReadListener.handleEvent(HttpClientConnection.java:502)
	at io.undertow.client.http.HttpClientConnection$ClientReadListener.handleEvent(HttpClientConnection.java:487)
	at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
	at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
	at io.undertow.protocols.ssl.SslConduit$SslReadReadyHandler.readReady(SslConduit.java:1129)
	at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:89)
	at org.xnio.nio.WorkerThread.run(WorkerThread.java:567)

2017-03-06 09:53:02,543 ERROR [org.xnio.listener] (default I/O-4) XNIO001007: A channel event listener threw an exception: java.lang.NullPointerException
	at io.undertow.client.http.HttpClientConnection$ClientReadListener.handleEvent(HttpClientConnection.java:617)
	at io.undertow.client.http.HttpClientConnection$ClientReadListener.handleEvent(HttpClientConnection.java:487)
	at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
	at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
	at io.undertow.protocols.ssl.SslConduit$SslReadReadyHandler.readReady(SslConduit.java:1129)
	at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:89)
	at org.xnio.nio.WorkerThread.run(WorkerThread.java:567)

      2017-03-09 09:04:43,801 INFO  [io.undertow] (default task-87) UT005047: Unregistering context /clusterbench, from node jboss-eap-7.1-1
2017-03-09 09:04:43,855 ERROR [io.undertow.client] (default I/O-23) UT005001: An exception occurred processing the request: java.lang.NullPointerException
	at io.undertow.protocols.ssl.SslConduit.doUnwrap(SslConduit.java:717)
	at io.undertow.protocols.ssl.SslConduit.read(SslConduit.java:567)
	at org.xnio.conduits.PushBackStreamSourceConduit.read(PushBackStreamSourceConduit.java:52)
	at org.xnio.conduits.ConduitStreamSourceChannel.read(ConduitStreamSourceChannel.java:127)
	at io.undertow.client.http.HttpClientConnection$ClientReadListener.handleEvent(HttpClientConnection.java:502)
	at io.undertow.client.http.HttpClientConnection$ClientReadListener.handleEvent(HttpClientConnection.java:487)
	at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
	at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
	at io.undertow.protocols.ssl.SslConduit$SslReadReadyHandler.readReady(SslConduit.java:1129)
	at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:89)
	at org.xnio.nio.WorkerThread.run(WorkerThread.java:567)

2017-03-09 09:04:43,859 ERROR [org.xnio.listener] (default I/O-23) XNIO001007: A channel event listener threw an exception: java.lang.NullPointerException
	at io.undertow.client.http.HttpClientConnection$ClientReadListener.handleEvent(HttpClientConnection.java:617)
	at io.undertow.client.http.HttpClientConnection$ClientReadListener.handleEvent(HttpClientConnection.java:487)
	at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
	at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
	at io.undertow.protocols.ssl.SslConduit$SslReadReadyHandler.readReady(SslConduit.java:1129)
	at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:89)
	at org.xnio.nio.WorkerThread.run(WorkerThread.java:567)

2017-03-09 09:04:43,858 INFO  [io.undertow] (default task-89) UT005044: Removing node jboss-eap-7.1-1
2017-03-09 09:04:43,860 ERROR [io.undertow.client] (default I/O-44) UT005001: An exception occurred processing the request: java.lang.IllegalStateException: UT000091: Buffer has already been freed
	at io.undertow.server.DefaultByteBufferPool$DefaultPooledBuffer.getBuffer(DefaultByteBufferPool.java:256)
	at io.undertow.protocols.ssl.SslConduit.doUnwrap(SslConduit.java:701)
	at io.undertow.protocols.ssl.SslConduit.read(SslConduit.java:567)
	at org.xnio.conduits.PushBackStreamSourceConduit.read(PushBackStreamSourceConduit.java:52)
	at org.xnio.conduits.ConduitStreamSourceChannel.read(ConduitStreamSourceChannel.java:127)
	at io.undertow.client.http.HttpClientConnection$ClientReadListener.handleEvent(HttpClientConnection.java:502)
	at io.undertow.client.http.HttpClientConnection$ClientReadListener.handleEvent(HttpClientConnection.java:487)
	at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
	at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
	at io.undertow.protocols.ssl.SslConduit$SslReadReadyHandler.readReady(SslConduit.java:1129)
	at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:89)
	at org.xnio.nio.WorkerThread.run(WorkerThread.java:567)

2017-03-09 09:04:43,860 ERROR [io.undertow.client] (default I/O-10) UT005001: An exception occurred processing the request: java.lang.NullPointerException
	at io.undertow.protocols.ssl.SslConduit.doUnwrap(SslConduit.java:717)
	at io.undertow.protocols.ssl.SslConduit.read(SslConduit.java:567)
	at org.xnio.conduits.PushBackStreamSourceConduit.read(PushBackStreamSourceConduit.java:52)
	at org.xnio.conduits.ConduitStreamSourceChannel.read(ConduitStreamSourceChannel.java:127)
	at io.undertow.client.http.HttpClientConnection$ClientReadListener.handleEvent(HttpClientConnection.java:502)
	at io.undertow.client.http.HttpClientConnection$ClientReadListener.handleEvent(HttpClientConnection.java:487)
	at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
	at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
	at io.undertow.protocols.ssl.SslConduit$SslReadReadyHandler.readReady(SslConduit.java:1129)
	at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:89)
	at org.xnio.nio.WorkerThread.run(WorkerThread.java:567)

2017-03-09 09:04:43,860 ERROR [org.xnio.listener] (default I/O-44) XNIO001007: A channel event listener threw an exception: java.lang.NullPointerException
	at io.undertow.client.http.HttpClientConnection$ClientReadListener.handleEvent(HttpClientConnection.java:617)
	at io.undertow.client.http.HttpClientConnection$ClientReadListener.handleEvent(HttpClientConnection.java:487)
	at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
	at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
	at io.undertow.protocols.ssl.SslConduit$SslReadReadyHandler.readReady(SslConduit.java:1129)
	at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:89)
	at org.xnio.nio.WorkerThread.run(WorkerThread.java:567)

2017-03-09 09:04:43,860 ERROR [org.xnio.listener] (default I/O-10) XNIO001007: A channel event listener threw an exception: java.lang.NullPointerException
	at io.undertow.client.http.HttpClientConnection$ClientReadListener.handleEvent(HttpClientConnection.java:617)
	at io.undertow.client.http.HttpClientConnection$ClientReadListener.handleEvent(HttpClientConnection.java:487)
	at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
	at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
	at io.undertow.protocols.ssl.SslConduit$SslReadReadyHandler.readReady(SslConduit.java:1129)
	at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:89)
	at org.xnio.nio.WorkerThread.run(WorkerThread.java:567)

2017-03-09 09:05:07,824 ERROR [io.undertow.client] (default I/O-45) UT005001: An exception occurred processing the request: java.lang.NullPointerException
	at io.undertow.protocols.ssl.SslConduit.doUnwrap(SslConduit.java:764)
	at io.undertow.protocols.ssl.SslConduit.read(SslConduit.java:567)
	at org.xnio.conduits.PushBackStreamSourceConduit.read(PushBackStreamSourceConduit.java:52)
	at org.xnio.conduits.ConduitStreamSourceChannel.read(ConduitStreamSourceChannel.java:127)
	at io.undertow.client.http.HttpClientConnection$ClientReadListener.handleEvent(HttpClientConnection.java:502)
	at io.undertow.client.http.HttpClientConnection$ClientReadListener.handleEvent(HttpClientConnection.java:487)
	at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
	at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
	at io.undertow.protocols.ssl.SslConduit$SslReadReadyHandler.readReady(SslConduit.java:1129)
	at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:89)
	at org.xnio.nio.WorkerThread.run(WorkerThread.java:567)

2017-03-09 09:05:07,833 ERROR [org.xnio.listener] (default I/O-45) XNIO001007: A channel event listener threw an exception: java.lang.NullPointerException
	at io.undertow.client.http.HttpClientConnection$ClientReadListener.handleEvent(HttpClientConnection.java:617)
	at io.undertow.client.http.HttpClientConnection$ClientReadListener.handleEvent(HttpClientConnection.java:487)
	at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
	at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
	at io.undertow.protocols.ssl.SslConduit$SslReadReadyHandler.readReady(SslConduit.java:1129)
	at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:89)
	at org.xnio.nio.WorkerThread.run(WorkerThread.java:567)

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          Bug - A problem that impairs or prevents the functions of the product. JBEAP-9508 NPE when removing node

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
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              sdouglas1@redhat.com Stuart Douglas
              bsikora Bogdan Sikora (Inactive)
              Jan Kašík Jan Kašík
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                Created:
                Updated:
                Resolved: