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Details

Type: Bug
Resolution: Unresolved
Priority: Major
Fix Version/s: 2.4.0.Final
Affects Version/s: 2.0.8.Final
Component/s: Core
Labels:
None

Steps to Reproduce:
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clone and build wildfly

start wildfly ./dist/target/wildfly-<version>/bin/standalone.sh

~~configure wildfly-openssl via WF CLI:~~ this step seems to be unnecessary

/core-service=management/security-realm=ApplicationRealm/server-identity=ssl:write-attribute(name=protocol,value=openssl.TLS)

grab h2spec tool (uses GO lang) and execute:

while true; do ./h2spec -t -k -p 8443 -h 127.0.0.1; done

NOTE: maybe you need to execute this command in more terminals in parallel to hit the issue

wait for a while and see the errors occuring in the server log
Show
clone and build wildfly start wildfly ./dist/target/wildfly-<version>/bin/standalone.sh configure wildfly-openssl via WF CLI: this step seems to be unnecessary /core-service=management/security-realm=ApplicationRealm/server-identity=ssl:write-attribute(name=protocol,value=openssl.TLS) grab h2spec tool (uses GO lang) and execute: while true ; do ./h2spec -t -k -p 8443 -h 127.0.0.1; done NOTE: maybe you need to execute this command in more terminals in parallel to hit the issue wait for a while and see the errors occuring in the server log
Git Pull Request:
https://github.com/undertow-io/undertow/pull/1195, https://github.com/undertow-io/undertow/pull/1197

Description

I can see following errors in server log during the HTTP2 in use when server is in stress when running HTTP2 testsuite - note that some tests have inappropriate behaviour but I think we should still be able to avoid such situations:

15:14:15,732 ERROR [io.undertow.request.io] (default task-3) UT005090: Unexpected failure: java.lang.IllegalStateException: UT000091: Buffer has already been freed
        at io.undertow.core@2.0.8.Final//io.undertow.util.ReferenceCountedPooled$1.getBuffer(ReferenceCountedPooled.java:135)
        at io.undertow.core@2.0.8.Final//io.undertow.server.protocol.framed.AbstractFramedStreamSourceChannel.transferTo(AbstractFramedStreamSourceChannel.java:129)
        at io.undertow.core@2.0.8.Final//io.undertow.protocols.http2.Http2StreamSourceChannel.transferTo(Http2StreamSourceChannel.java:175)
        at org.jboss.xnio@3.6.3.Final//org.xnio.conduits.StreamSourceChannelWrappingConduit.transferTo(StreamSourceChannelWrappingConduit.java:35)
        at org.jboss.xnio@3.6.3.Final//org.xnio.conduits.ConduitStreamSourceChannel.transferTo(ConduitStreamSourceChannel.java:83)
        at io.undertow.core@2.0.8.Final//io.undertow.channels.DetachableStreamSourceChannel.transferTo(DetachableStreamSourceChannel.java:70)
        at io.undertow.core@2.0.8.Final//io.undertow.server.HttpServerExchange$ReadDispatchChannel.transferTo(HttpServerExchange.java:2185)
        at org.jboss.xnio@3.6.3.Final//org.xnio.channels.Channels.drain(Channels.java:808)
        at io.undertow.core@2.0.8.Final//io.undertow.server.HttpServerExchange.endExchange(HttpServerExchange.java:1646)
        at io.undertow.core@2.0.8.Final//io.undertow.io.DefaultIoCallback.onException(DefaultIoCallback.java:61)
        at io.undertow.core@2.0.8.Final//io.undertow.io.AsyncSenderImpl.invokeOnException(AsyncSenderImpl.java:464)
        at io.undertow.core@2.0.8.Final//io.undertow.io.AsyncSenderImpl.send(AsyncSenderImpl.java:302)
        at io.undertow.core@2.0.8.Final//io.undertow.io.AsyncSenderImpl.send(AsyncSenderImpl.java:295)
        at io.undertow.core@2.0.8.Final//io.undertow.io.AsyncSenderImpl.send(AsyncSenderImpl.java:333)
        at io.undertow.core@2.0.8.Final//io.undertow.server.handlers.error.SimpleErrorPageHandler$1.handleDefaultResponse(SimpleErrorPageHandler.java:68)
        at io.undertow.core@2.0.8.Final//io.undertow.server.HttpServerExchange.endExchange(HttpServerExchange.java:1606)
        at io.undertow.core@2.0.8.Final//io.undertow.io.DefaultIoCallback.onException(DefaultIoCallback.java:61)
        at io.undertow.core@2.0.8.Final//io.undertow.server.handlers.resource.PathResource$1ServerTask.onException(PathResource.java:212)
        at io.undertow.core@2.0.8.Final//io.undertow.io.AsyncSenderImpl.invokeOnException(AsyncSenderImpl.java:464)
        at io.undertow.core@2.0.8.Final//io.undertow.io.AsyncSenderImpl.send(AsyncSenderImpl.java:123)
        at io.undertow.core@2.0.8.Final//io.undertow.server.handlers.resource.PathResource$1ServerTask.run(PathResource.java:184)
        at io.undertow.core@2.0.8.Final//io.undertow.server.handlers.resource.PathResource.serveImpl(PathResource.java:253)
        at io.undertow.core@2.0.8.Final//io.undertow.server.handlers.resource.PathResource.serve(PathResource.java:111)
        at io.undertow.core@2.0.8.Final//io.undertow.server.handlers.resource.ResourceHandler$1.handleRequest(ResourceHandler.java:337)
        at io.undertow.core@2.0.8.Final//io.undertow.server.Connectors.executeRootHandler(Connectors.java:360)
        at io.undertow.core@2.0.8.Final//io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:830)
        at org.jboss.threads@2.3.2.Final//org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
        at org.jboss.threads@2.3.2.Final//org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1985)
        at org.jboss.threads@2.3.2.Final//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1487)
        at org.jboss.threads@2.3.2.Final//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1378)
        at java.base/java.lang.Thread.run(Thread.java:844)

15:36:57,349 ERROR [io.undertow.request.io] (default task-4) UT005090: Unexpected failure: java.lang.IllegalStateException: UT000091: Buffer has already been freed
	at io.undertow.core@2.0.8.Final//io.undertow.util.ReferenceCountedPooled$1.getBuffer(ReferenceCountedPooled.java:135)
	at io.undertow.core@2.0.8.Final//io.undertow.server.protocol.framed.AbstractFramedStreamSourceChannel.exitRead(AbstractFramedStreamSourceChannel.java:572)
	at io.undertow.core@2.0.8.Final//io.undertow.server.protocol.framed.AbstractFramedStreamSourceChannel.transferTo(AbstractFramedStreamSourceChannel.java:142)
	at io.undertow.core@2.0.8.Final//io.undertow.protocols.http2.Http2StreamSourceChannel.transferTo(Http2StreamSourceChannel.java:175)
	at org.jboss.xnio@3.6.3.Final//org.xnio.conduits.StreamSourceChannelWrappingConduit.transferTo(StreamSourceChannelWrappingConduit.java:35)
	at org.jboss.xnio@3.6.3.Final//org.xnio.conduits.ConduitStreamSourceChannel.transferTo(ConduitStreamSourceChannel.java:83)
	at io.undertow.core@2.0.8.Final//io.undertow.channels.DetachableStreamSourceChannel.transferTo(DetachableStreamSourceChannel.java:70)
	at io.undertow.core@2.0.8.Final//io.undertow.server.HttpServerExchange$ReadDispatchChannel.transferTo(HttpServerExchange.java:2185)
	at org.jboss.xnio@3.6.3.Final//org.xnio.channels.Channels.drain(Channels.java:808)
	at io.undertow.core@2.0.8.Final//io.undertow.server.HttpServerExchange.endExchange(HttpServerExchange.java:1646)
	at io.undertow.core@2.0.8.Final//io.undertow.io.DefaultIoCallback.onException(DefaultIoCallback.java:61)
	at io.undertow.core@2.0.8.Final//io.undertow.io.AsyncSenderImpl.invokeOnException(AsyncSenderImpl.java:464)
	at io.undertow.core@2.0.8.Final//io.undertow.io.AsyncSenderImpl.send(AsyncSenderImpl.java:302)
	at io.undertow.core@2.0.8.Final//io.undertow.io.AsyncSenderImpl.send(AsyncSenderImpl.java:295)
	at io.undertow.core@2.0.8.Final//io.undertow.io.AsyncSenderImpl.send(AsyncSenderImpl.java:333)
	at io.undertow.core@2.0.8.Final//io.undertow.server.handlers.error.SimpleErrorPageHandler$1.handleDefaultResponse(SimpleErrorPageHandler.java:68)
	at io.undertow.core@2.0.8.Final//io.undertow.server.HttpServerExchange.endExchange(HttpServerExchange.java:1606)
	at io.undertow.core@2.0.8.Final//io.undertow.io.DefaultIoCallback.onException(DefaultIoCallback.java:61)
	at io.undertow.core@2.0.8.Final//io.undertow.server.handlers.resource.PathResource$1ServerTask.onException(PathResource.java:212)
	at io.undertow.core@2.0.8.Final//io.undertow.io.AsyncSenderImpl.invokeOnException(AsyncSenderImpl.java:464)
	at io.undertow.core@2.0.8.Final//io.undertow.io.AsyncSenderImpl.send(AsyncSenderImpl.java:123)
	at io.undertow.core@2.0.8.Final//io.undertow.server.handlers.resource.PathResource$1ServerTask.run(PathResource.java:184)
	at io.undertow.core@2.0.8.Final//io.undertow.server.handlers.resource.PathResource.serveImpl(PathResource.java:253)
	at io.undertow.core@2.0.8.Final//io.undertow.server.handlers.resource.PathResource.serve(PathResource.java:111)
	at io.undertow.core@2.0.8.Final//io.undertow.server.handlers.resource.ResourceHandler$1.handleRequest(ResourceHandler.java:337)
	at io.undertow.core@2.0.8.Final//io.undertow.server.Connectors.executeRootHandler(Connectors.java:360)
	at io.undertow.core@2.0.8.Final//io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:830)
	at org.jboss.threads@2.3.2.Final//org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
	at org.jboss.threads@2.3.2.Final//org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1985)
	at org.jboss.threads@2.3.2.Final//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1487)
	at org.jboss.threads@2.3.2.Final//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1378)
	at java.base/java.lang.Thread.run(Thread.java:841)

15:52:48,550 ERROR [io.undertow.request.io] (default task-4) UT005090: Unexpected failure: java.lang.IllegalStateException: UT000091: Buffer has already been freed
	at io.undertow.util.ReferenceCountedPooled$1.getBuffer(ReferenceCountedPooled.java:135)
	at io.undertow.server.protocol.framed.AbstractFramedStreamSourceChannel.transferTo(AbstractFramedStreamSourceChannel.java:136)
	at io.undertow.protocols.http2.Http2StreamSourceChannel.transferTo(Http2StreamSourceChannel.java:175)
	at org.xnio.conduits.StreamSourceChannelWrappingConduit.transferTo(StreamSourceChannelWrappingConduit.java:35)
	at org.xnio.conduits.ConduitStreamSourceChannel.transferTo(ConduitStreamSourceChannel.java:83)
	at io.undertow.channels.DetachableStreamSourceChannel.transferTo(DetachableStreamSourceChannel.java:70)
	at io.undertow.server.HttpServerExchange$ReadDispatchChannel.transferTo(HttpServerExchange.java:2185)
	at org.xnio.channels.Channels.drain(Channels.java:808)
	at io.undertow.server.HttpServerExchange.endExchange(HttpServerExchange.java:1646)
	at io.undertow.io.DefaultIoCallback.onException(DefaultIoCallback.java:61)
	at io.undertow.io.AsyncSenderImpl.invokeOnException(AsyncSenderImpl.java:464)
	at io.undertow.io.AsyncSenderImpl.send(AsyncSenderImpl.java:302)
	at io.undertow.io.AsyncSenderImpl.send(AsyncSenderImpl.java:295)
	at io.undertow.io.AsyncSenderImpl.send(AsyncSenderImpl.java:333)
	at io.undertow.server.handlers.error.SimpleErrorPageHandler$1.handleDefaultResponse(SimpleErrorPageHandler.java:68)
	at io.undertow.server.HttpServerExchange.endExchange(HttpServerExchange.java:1606)
	at io.undertow.io.DefaultIoCallback.onException(DefaultIoCallback.java:61)
	at io.undertow.server.handlers.resource.PathResource$1ServerTask.onException(PathResource.java:212)
	at io.undertow.io.AsyncSenderImpl.invokeOnException(AsyncSenderImpl.java:464)
	at io.undertow.io.AsyncSenderImpl.send(AsyncSenderImpl.java:123)
	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$1.run(HttpServerExchange.java:830)
	at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
	at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1985)
	at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1487)
	at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1378)
	at java.lang.Thread.run(Thread.java:748)

HTTP2 - java.lang.IllegalStateException: UT000091: Buffer has already been freed

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