Details
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Bug
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Resolution: Done
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Blocker
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None
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None
Description
At random, one of threads gets into infinite loop. Typical thread looks like this:
"default task-30" prio=10 tid=0x00007fdc28122800 nid=0x150d runnable [0x00007fdc2c393000] java.lang.Thread.State: RUNNABLE 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:225) at sun.nio.ch.IOUtil.read(IOUtil.java:193) at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:375) - locked <0x00000000e320c6c8> (a java.lang.Object) at org.xnio.nio.NioSocketConduit.read(NioSocketConduit.java:280) at org.xnio.conduits.AbstractStreamSourceConduit.read(AbstractStreamSourceConduit.java:51) at org.xnio.ssl.JsseSslStreamSourceConduit.read(JsseSslStreamSourceConduit.java:84) - locked <0x00000000e3212bf8> (a org.xnio.ByteBufferSlicePool$PooledByteBuffer) at org.xnio.conduits.AbstractStreamSourceConduit.read(AbstractStreamSourceConduit.java:51) at io.undertow.conduits.ReadDataStreamSourceConduit.read(ReadDataStreamSourceConduit.java:49)
NOTE: some examples of full thread dumps attached below.
NOTE: the thread in troubles was identified using ps H -eo user,pid,ppid,tid,time,%cpu,cmd --sort=%cpu
jboss 5215 5173 5389 01:23:41 30.9 /usr/lib/jvm/java-1.7.0/bin/java -D[Standalone] -server -Xms64m -Xmx512m -XX:MaxPermSize=256m -Djava.net.preferIPv4Stack=true -Djboss.modules.system.pkgs=org.jboss.byteman -Djava.awt.headless=true -Dorg.jboss.boot.log.file=/op
NOTE: 5389 == 0x150d
Once thread got into this state it never recover.
