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  1. Undertow
  2. UNDERTOW-2002

StackOverflowError upon AJP read timeout

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      1. Configure an ajp listener with a low timeout for ease of reproducing:

                      <ajp-listener name="ajp" socket-binding="ajp" read-timeout="1000" write-timeout="1000" />

      2. Open an idle connection exceeding the timeout:

      telnet localhost 8009
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      1. Configure an ajp listener with a low timeout for ease of reproducing: <ajp-listener name= "ajp" socket-binding= "ajp" read-timeout= "1000" write-timeout= "1000" /> 2. Open an idle connection exceeding the timeout: telnet localhost 8009

    Description

      After UNDERTOW-1824, a StackOverflowError now occurs upon an AJP read timeout:

      ERROR [org.xnio.listener] (default I/O-17) XNIO001007: A channel event listener threw an exception: java.lang.StackOverflowError
	at org.jboss.logmanager.formatters.Formatters$7.renderRaw(Formatters.java:450)
	at org.jboss.logmanager.formatters.Formatters$JustifyingFormatStep.render(Formatters.java:215)
	at org.jboss.logmanager.formatters.MultistepFormatter.format(MultistepFormatter.java:89)
	at org.jboss.logmanager.ExtFormatter.format(ExtFormatter.java:32)
	at org.jboss.logmanager.handlers.WriterHandler.doPublish(WriterHandler.java:46)
	at org.jboss.logmanager.ExtHandler.publish(ExtHandler.java:77)
	at org.jboss.logmanager.LoggerNode.publish(LoggerNode.java:333)
	at org.jboss.logmanager.LoggerNode.publish(LoggerNode.java:341)
	at org.jboss.logmanager.LoggerNode.publish(LoggerNode.java:341)
	at org.jboss.logmanager.LoggerNode.publish(LoggerNode.java:341)
	at org.jboss.logmanager.Logger.logRaw(Logger.java:852)
	at org.jboss.logmanager.Logger.log(Logger.java:804)
	at org.jboss.logging.JBossLogManagerLogger.doLogf(JBossLogManagerLogger.java:53)
	at org.jboss.logging.Logger.logf(Logger.java:2445)
	at io.undertow.UndertowLogger_$logger.exceptionProcessingRequest(UndertowLogger_$logger.java:57)
	at io.undertow.server.protocol.ajp.AjpReadListener.handleEvent(AjpReadListener.java:252)
	at io.undertow.core@2.2.9.SP1-redhat-00001//io.undertow.server.protocol.ajp.AjpReadListener.sendMessages(AjpReadListener.java:316)
	at io.undertow.core@2.2.9.SP1-redhat-00001//io.undertow.server.protocol.ajp.AjpReadListener.handleInternalServerError(AjpReadListener.java:261)
	at io.undertow.core@2.2.9.SP1-redhat-00001//io.undertow.server.protocol.ajp.AjpReadListener.handleEvent(AjpReadListener.java:249)
...
	at io.undertow.core@2.2.9.SP1-redhat-00001//io.undertow.server.protocol.ajp.AjpReadListener.sendMessages(AjpReadListener.java:316)
	at io.undertow.core@2.2.9.SP1-redhat-00001//io.undertow.server.protocol.ajp.AjpReadListener.handleInternalServerError(AjpReadListener.java:261)
	at io.undertow.core@2.2.9.SP1-redhat-00001//io.undertow.server.protocol.ajp.AjpReadListener.handleEvent(AjpReadListener.java:249)
	at io.undertow.core@2.2.9.SP1-redhat-00001//io.undertow.server.protocol.ajp.AjpReadListener.handleEvent(AjpReadListener.java:56)
	at org.jboss.xnio@3.8.4.Final-redhat-00001//org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
	at org.jboss.xnio@3.8.4.Final-redhat-00001//org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
	at io.undertow.core@2.2.9.SP1-redhat-00001//io.undertow.conduits.ReadTimeoutStreamSourceConduit$2.readReady(ReadTimeoutStreamSourceConduit.java:99)
	at org.jboss.xnio.nio@3.8.4.Final-redhat-00001//org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:89)
	at org.jboss.xnio.nio@3.8.4.Final-redhat-00001//org.xnio.nio.NioHandle$1.run(NioHandle.java:50)
	at org.jboss.xnio.nio@3.8.4.Final-redhat-00001//org.xnio.nio.WorkerThread.safeRun(WorkerThread.java:612)
	at org.jboss.xnio.nio@3.8.4.Final-redhat-00001//org.xnio.nio.WorkerThread.run(WorkerThread.java:479)

      The following IOException is repeated rapidly until that overflow:

      DEBUG [io.undertow.request.io] (default I/O-14) UT005013: An IOException occurred: org.xnio.channels.ReadTimeoutException: UT000199: Read timed out after 1638571000771 milliseconds.
	at io.undertow.conduits.ReadTimeoutStreamSourceConduit.checkExpired(ReadTimeoutStreamSourceConduit.java:238)
	at io.undertow.conduits.ReadTimeoutStreamSourceConduit.read(ReadTimeoutStreamSourceConduit.java:169)
	at org.xnio.conduits.ConduitStreamSourceChannel.read(ConduitStreamSourceChannel.java:127)
	at io.undertow.server.protocol.ajp.AjpReadListener.handleEvent(AjpReadListener.java:125)
	at io.undertow.server.protocol.ajp.AjpReadListener.sendMessages(AjpReadListener.java:316)
	at io.undertow.server.protocol.ajp.AjpReadListener.handleInternalServerError(AjpReadListener.java:261)

      And the connection fills with the repeated SEND_HEADERS_INTERNAL_SERVER_ERROR_MSG bytes.

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          is cloned by

          Bug - A problem that impairs or prevents the functions of the product. JBEAP-22861 [GSS](7.4.z) UNDERTOW-2002 - StackOverflowError upon AJP read timeout

          • 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.
          • Verified
          is incorporated by

          Component Upgrade - A task tracking an update to a bundled component or revision of component upstream of the project. WFCORE-5801 Upgrade Undertow to 2.2.16.Final

          • 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.
          • Closed

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              ropalka Richard Opalka
              rhn-support-aogburn Aaron Ogburn
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                Updated:
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