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From Collin McClendon <collin.mcclen...@Digiconasp.com>
Subject mod_jk 1.2.10 and tomcat 5.5.9 buffer overflow
Date Tue, 12 Jul 2005 16:38:20 GMT
Hello all,
I was kindly redirected to this list by Mr. Turk, the author of mod_jk. 
He suggested that someone here might be able to determine
why when using mod_jk and tomcat and apache, I am getting buffer 
overflow messages in the catalina.out logfile.  This tends to
happen after 8 hours or so, and after users have been visiting the 
website, not when idle. I have the relevant portion of the log here:
My mod_jk as stated is 1.2.10, tomcat is 5.5.9, and apache is 2.0.52-12 
(RedHat 4.0ES build).

SEVERE: Buffer overflow: buffer.len=8192 pos=70 data=18568
Jun 28, 2005 6:16:21 PM org.apache.jk.common.MsgAjp cpBytes
SEVERE: Overflow
java.lang.Throwable
        at org.apache.jk.common.MsgAjp.cpBytes(MsgAjp.java:172)
        at org.apache.jk.common.MsgAjp.appendByteChunk(MsgAjp.java:146)
        at org.apache.jk.common.MsgAjp.appendBytes(MsgAjp.java:132)
        at 
org.apache.jk.server.JkCoyoteHandler.appendHead(JkCoyoteHandler.java:407)
        at 
org.apache.jk.server.JkCoyoteHandler.action(JkCoyoteHandler.java:425)
        at org.apache.coyote.Response.action(Response.java:182)
        at org.apache.coyote.Response.sendHeaders(Response.java:374)
        at 
org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:317)
        at 
org.apache.catalina.connector.OutputBuffer.close(OutputBuffer.java:278)
        at 
org.apache.catalina.connector.Response.finishResponse(Response.java:473)
        at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
        at 
org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:307)
        at 
org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:385)
        at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:748)
        at 
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:678)
        at 
org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:871)
        at 
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
        at java.lang.Thread.run(Thread.java:595)

I'd appreciate any help you can offer,
Thank you,
Collin McClendon

-- 
Collin McClendon
Sr. Microsoft Systems Engineer
Digicon, Inc.
collin.mcclendon@digiconasp.com


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