BUFFER_OVERFLOW on NIO HTTPS connector for large requests

Solution Verified - Updated

Environment

  • JBoss Enterprise Application Platform (EAP) 6.4.4 and earlier

Issue

  • We're configured to use an NIO HTTPS connector and see a BUFFER_OVERLOW error like the following for larger requests:
DEBUG [org.apache.coyote.http11] (http-/127.0.0.1:8443-13) JBWEB003064: Error during blocking read: java.io.IOException: JBWEB002048: Unable to unwrap data, invalid status 
BUFFER_OVERFLOW
        at org.apache.tomcat.util.net.jsse.SecureNioChannel.unwrap(SecureNioChannel.java:591) [jbossweb-7.5.7.Final-redhat-1.jar:7.5.7.Final-redhat-1]
        at org.apache.tomcat.util.net.jsse.SecureNioChannel.readBytes(SecureNioChannel.java:134) [jbossweb-7.5.7.Final-redhat-1.jar:7.5.7.Final-redhat-1]
        at org.apache.coyote.http11.InternalNioInputBuffer.fill0(InternalNioInputBuffer.java:515) [jbossweb-7.5.7.Final-redhat-1.jar:7.5.7.Final-redhat-1]
        at org.apache.coyote.http11.InternalNioInputBuffer.fill(InternalNioInputBuffer.java:469) [jbossweb-7.5.7.Final-redhat-1.jar:7.5.7.Final-redhat-1]
        at org.apache.coyote.http11.InternalNioInputBuffer.parseRequestLine(InternalNioInputBuffer.java:316) [jbossweb-7.5.7.Final-redhat-1.jar:7.5.7.Final-redhat-1]
        at org.apache.coyote.http11.Http11NioProcessor.process(Http11NioProcessor.java:290) [jbossweb-7.5.7.Final-redhat-1.jar:7.5.7.Final-redhat-1]
        at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:911) [jbossweb-7.5.7.Final-redhat-1.jar:7.5.7.Final-redhat-1]
        at org.apache.tomcat.util.net.NioEndpoint$ChannelProcessor.run(NioEndpoint.java:936) [jbossweb-7.5.7.Final-redhat-1.jar:7.5.7.Final-redhat-1]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [rt.jar:1.8.0_60]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [rt.jar:1.8.0_60]
        at org.apache.tomcat.util.net.NioEndpoint$DefaultThreadFactory$1$1.run(NioEndpoint.java:1249) [jbossweb-7.5.7.Final-redhat-1.jar:7.5.7.Final-redhat-1]
        at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_60]

Resolution

  • Apply the latest 6.4 CP with this fix (6.4.5+)

Root Cause

SBR
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