Tests intermittently fail with Buffer Leak exception

java.lang.RuntimeException: Buffer Leak io.undertow.server.ssl.ComplexSSLTestCase.complexSSLTestCase
08:58:49 	at io.undertow.testutils.DefaultServer$2.testFinished(DefaultServer.java:289)
08:58:49 	at org.junit.runner.notification.SynchronizedRunListener.testFinished(SynchronizedRunListener.java:56)
08:58:49 	at org.junit.runner.notification.RunNotifier$7.notifyListener(RunNotifier.java:190)
08:58:49 	at org.junit.runner.notification.RunNotifier$SafeNotifier.run(RunNotifier.java:72)
08:58:49 	at org.junit.runner.notification.RunNotifier.fireTestFinished(RunNotifier.java:187)
08:58:49 	at org.junit.internal.runners.model.EachTestNotifier.fireTestFinished(EachTestNotifier.java:38)
08:58:49 	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:331)
08:58:49 	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
08:58:49 	at io.undertow.testutils.DefaultServer.runChild(DefaultServer.java:524)
08:58:49 	at io.undertow.testutils.DefaultServer.runChild(DefaultServer.java:104)
08:58:49 	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
08:58:49 	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
08:58:49 	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
08:58:49 	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
08:58:49 	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
08:58:49 	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
08:58:49 	at io.undertow.testutils.DefaultServer.run(DefaultServer.java:297)
08:58:49 	at org.junit.runners.Suite.runChild(Suite.java:128)
08:58:49 	at org.junit.runners.Suite.runChild(Suite.java:27)
08:58:49 	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
08:58:49 	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
08:58:49 	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
08:58:49 	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
08:58:49 	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
08:58:49 	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
08:58:49 	at org.apache.maven.surefire.junitcore.JUnitCore.run(JUnitCore.java:55)
08:58:49 	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.createRequestAndRun(JUnitCoreWrapper.java:137)
08:58:49 	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.executeEager(JUnitCoreWrapper.java:107)
08:58:49 	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.execute(JUnitCoreWrapper.java:83)
08:58:49 	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.execute(JUnitCoreWrapper.java:75)
08:58:49 	at org.apache.maven.surefire.junitcore.JUnitCoreProvider.invoke(JUnitCoreProvider.java:158)
08:58:49 	at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:383)
08:58:49 	at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:344)
08:58:49 	at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:125)
08:58:49 	at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:417)
08:58:49 Caused by: java.lang.RuntimeException: java.nio.DirectByteBuffer[pos=0 lim=8192 cap=8192] NO: 131832 [NO_CONTEXT]
08:58:49 	at io.undertow.testutils.DebuggingSlicePool$DebuggingBuffer.<init>(DebuggingSlicePool.java:84)
08:58:49 	at io.undertow.testutils.DebuggingSlicePool.allocate(DebuggingSlicePool.java:45)
08:58:49 	at io.undertow.server.handlers.resource.PathResource$1ServerTask.run(PathResource.java:163)
08:58:49 	at io.undertow.server.handlers.resource.PathResource.serveImpl(PathResource.java:253)
08:58:49 	at io.undertow.server.handlers.resource.PathResource.serve(PathResource.java:111)
08:58:49 	at io.undertow.server.handlers.resource.ResourceHandler$1.handleRequest(ResourceHandler.java:337)
08:58:49 	at io.undertow.server.Connectors.executeRootHandler(Connectors.java:360)
08:58:49 	at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:830)
08:58:49 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
08:58:49 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
08:58:49 	at java.lang.Thread.run(Thread.java:748)

io.undertow.server.ssl.SimpleSSLTestCase.parallelWithDispatch
io.undertow.servlet.test.streams.ServletInputStreamRequestBufferingTestCase.testAsyncServletInputStreamInParallel[proxy][http2-clear-upgrade]
io.undertow.server.ssl.ComplexSSLTestCase.complexSSLTestCase

13:18:11,109 ERROR (XNIO-1 task-12) [io.undertow.request] <Connectors.java:398> UT005071: Undertow request failed HttpServerExchange{ GET /page.html request {Connection=[Keep-Alive], User-Agent=[Apache-HttpClient/4.5.6 (Java/1.8.0_191)], Host=[localhost:7778]} response {Connection=[keep-alive], Last-Modified=[Tue, 27 Nov 2018 13:17:21 GMT], Content-Length=[806], Content-Type=[text/html], Accept-Ranges=[bytes], Date=[Tue, 27 Nov 2018 13:18:11 GMT]}}: java.lang.NullPointerException
	at io.undertow.protocols.ssl.SslConduit.doWrap(SslConduit.java:920)
	at io.undertow.protocols.ssl.SslConduit.write(SslConduit.java:379)
	at io.undertow.conduits.BytesSentStreamSinkConduit.write(BytesSentStreamSinkConduit.java:76)
	at io.undertow.server.protocol.http.HttpResponseConduit.processWrite(HttpResponseConduit.java:251)
	at io.undertow.server.protocol.http.HttpResponseConduit.write(HttpResponseConduit.java:598)
	at io.undertow.conduits.AbstractFixedLengthStreamSinkConduit.write(AbstractFixedLengthStreamSinkConduit.java:106)
	at org.xnio.conduits.ConduitStreamSinkChannel.write(ConduitStreamSinkChannel.java:150)
	at io.undertow.channels.DetachableStreamSinkChannel.write(DetachableStreamSinkChannel.java:240)
	at io.undertow.server.HttpServerExchange$WriteDispatchChannel.write(HttpServerExchange.java:2103)
	at io.undertow.io.AsyncSenderImpl.send(AsyncSenderImpl.java:160)
	at io.undertow.server.handlers.resource.PathResource$1ServerTask.run(PathResource.java:184)
	at io.undertow.server.handlers.resource.PathResource.serveImpl(PathResource.java:253)
	at io.undertow.server.handlers.resource.PathResource.serve(PathResource.java:111)
	at io.undertow.server.handlers.resource.ResourceHandler$1.handleRequest(ResourceHandler.java:337)
	at io.undertow.server.Connectors.executeRootHandler(Connectors.java:360)
	at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:830)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

java.lang.RuntimeException: java.nio.DirectByteBuffer[pos=0 lim=8192 cap=8192] NO: 131299 [NO_CONTEXT]
	at io.undertow.testutils.DebuggingSlicePool$DebuggingBuffer.<init>(DebuggingSlicePool.java:84)
	at io.undertow.testutils.DebuggingSlicePool.allocate(DebuggingSlicePool.java:45)
	at io.undertow.server.handlers.resource.PathResource$1ServerTask.run(PathResource.java:163)
	at io.undertow.server.handlers.resource.PathResource.serveImpl(PathResource.java:253)
	at io.undertow.server.handlers.resource.PathResource.serve(PathResource.java:111)
	at io.undertow.server.handlers.resource.ResourceHandler$1.handleRequest(ResourceHandler.java:337)
	at io.undertow.server.Connectors.executeRootHandler(Connectors.java:360)
	at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:830)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
java.lang.Throwable: Buffer leak detected
	at io.undertow.server.DefaultByteBufferPool$LeakDetector.<init>(DefaultByteBufferPool.java:314)
	at io.undertow.server.DefaultByteBufferPool$LeakDetector.<init>(DefaultByteBufferPool.java:308)
	at io.undertow.server.DefaultByteBufferPool$DefaultPooledBuffer.<init>(DefaultByteBufferPool.java:254)
	at io.undertow.server.DefaultByteBufferPool.allocate(DefaultByteBufferPool.java:157)
	at io.undertow.testutils.DebuggingSlicePool.allocate(DebuggingSlicePool.java:44)
	at io.undertow.server.handlers.resource.PathResource$1ServerTask.run(PathResource.java:163)
	at io.undertow.server.handlers.resource.PathResource.serveImpl(PathResource.java:253)
	at io.undertow.server.handlers.resource.PathResource.serve(PathResource.java:111)
	at io.undertow.server.handlers.resource.ResourceHandler$1.handleRequest(ResourceHandler.java:337)
	at io.undertow.server.Connectors.executeRootHandler(Connectors.java:360)
	at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:830)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
WRITE 16000000
DONE 16000000
WRITE 1600000
DONE 1600000
13:18:38,568 DEBUG (XNIO-1 I/O-1) [io.undertow.request.io] <HttpReadListener.java:160> Error reading request: java.io.IOException: Connection reset by peer
	at sun.nio.ch.FileDispatcherImpl.read0(Native Method)
	at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39)
	at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)
	at sun.nio.ch.IOUtil.read(IOUtil.java:192)
	at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380)
	at org.xnio.nio.NioSocketConduit.read(NioSocketConduit.java:319)
	at io.undertow.protocols.ssl.SslConduit.doUnwrap(SslConduit.java:703)
	at io.undertow.protocols.ssl.SslConduit.read(SslConduit.java:567)
	at org.xnio.conduits.AbstractStreamSourceConduit.read(AbstractStreamSourceConduit.java:51)
	at io.undertow.conduits.BytesReceivedStreamSourceConduit.read(BytesReceivedStreamSourceConduit.java:67)
	at org.xnio.conduits.ConduitStreamSourceChannel.read(ConduitStreamSourceChannel.java:127)
	at io.undertow.server.protocol.http.HttpReadListener.handleEventWithNoRunningRequest(HttpReadListener.java:158)
	at io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:136)
	at io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:59)
	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:1175)
	at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:88)
	at org.xnio.nio.WorkerThread.run(WorkerThread.java:561)