BufferOverflowException happens in Undertow ajp-listener on JBoss EAP 7.x

Issue

• We see an exception like the following on EAP 7:

2016-12-07 17:28:12,708 ERROR [io.undertow.request] (default task-62) UT005071: Undertow request failed HttpServerExchange: java.nio.BufferOverflowException
    at java.nio.Buffer.nextPutIndex(Buffer.java:521)
    at java.nio.DirectByteBuffer.put(DirectByteBuffer.java:297)
    at io.undertow.server.protocol.ajp.AjpServerResponseConduit.putString(AjpServerResponseConduit.java:156)
    at io.undertow.server.protocol.ajp.AjpServerResponseConduit.processAJPHeader(AjpServerResponseConduit.java:237)
    at io.undertow.server.protocol.ajp.AjpServerResponseConduit.queueCloseFrames(AjpServerResponseConduit.java:264)
    at io.undertow.conduits.AbstractFramedStreamSinkConduit.terminateWrites(AbstractFramedStreamSinkConduit.java:195)
    at org.xnio.conduits.ConduitStreamSinkChannel.shutdownWrites(ConduitStreamSinkChannel.java:178)
    at io.undertow.channels.DetachableStreamSinkChannel.shutdownWrites(DetachableStreamSinkChannel.java:79)
    at io.undertow.server.HttpServerExchange.closeAndFlushResponse(HttpServerExchange.java:1663)
    at io.undertow.server.HttpServerExchange.endExchange(HttpServerExchange.java:1642)
    at io.undertow.server.Connectors.executeRootHandler(Connectors.java:226)
    at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:802)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)