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From Daniel Gibby <dgi...@resumerabbit.com>
Subject Re: IBM JRE 1.4.1 dumping core on login with http/1.0 browsers
Date Thu, 23 Oct 2003 19:56:41 GMT
Search for Java IBM LD_ASSUME_KERNEL in google. That may be your problem.

Then set an environment variable in your apache and tomcat startup scripts:
export LD_ASSUME_KERNEL=2.2.5

I hope that helps. It seems to have solved my crashes.

Daniel Gibby

George Payne wrote:

> I'm having problems with the IBM 1.4.1 jvm dumping core every few days 
> under fairly light use with tomcat 4.1.27.
>
> I'm looking for general advice (though specific advice would be even 
> better).
>
> Should I be looking for a new JVM?  Or my programming bug or misconfig?
>
> This problem appears to be directly or indirectly related to the use 
> of old browsers.  Each time it has happened (twice now), the logs 
> (below) show that it was being accessed via http/1.0, which is fairly 
> rare in the log files.  It occurs right after or right before 
> authentication.
>
> More info:
>
> RH 8, 2.4.20-20.8smp
> apache 2.0/mod_ssl
> mod_jk
>
> **** 15/03 ssl_access_log snippet:
> 128.104.50.121 - - [15/Oct/2003:23:16:14 -0400] "GET / HTTP/1.0" 200 268
>
> 128.104.50.121 - - [15/Oct/2003:23:16:18 -0400] "GET 
> /apptrack/s/myappinfo.jsp HTTP/1.0" 302 0
> 128.104.50.121 - - [15/Oct/2003:23:16:20 -0400] "GET 
> /apptrack/login.jsp;jsessionid=D82BFF7D0F918CDB106C1A072EC2AB3D 
> HTTP/1.0" 200 4
> 085
> 128.104.50.121 - - [15/Oct/2003:23:16:22 -0400] "GET 
> /apptrack/images/applicanttracking_r2_c1.gif HTTP/1.0" 200 9669
> 128.104.50.121 - - [15/Oct/2003:23:16:22 -0400] "GET 
> /apptrack/images/applicanttracking_leftimg.jpg HTTP/1.0" 200 13065
> (***CRASH***)
> 128.104.50.121 - - [15/Oct/2003:23:16:42 -0400] "POST 
> /apptrack/j_security_check HTTP/1.0" 500 1085
> 128.104.50.121 - - [15/Oct/2003:23:16:55 -0400] "GET 
> /apptrack/login.jsp;jsessionid=D82BFF7D0F918CDB106C1A072EC2AB3D 
> HTTP/1.0" 500 1
> 085
>
> **** 22/03 ssl_access_log snippet:
> 149.199.60.202 - - [22/Oct/2003:18:28:27 -0400] "GET / HTTP/1.0" 200 268
> 149.199.60.202 - - [22/Oct/2003:18:28:28 -0400] "GET 
> /apptrack/s/myappinfo.jsp HTTP/1.0" 302 0
> 149.199.60.202 - - [22/Oct/2003:18:28:28 -0400] "GET 
> /apptrack/login.jsp;jsessionid=E7F6276FD5958C2D224B0C182A47EB1F 
> HTTP/1.0" 200 4
> 085
> 149.199.60.203 - - [22/Oct/2003:18:28:29 -0400] "GET 
> /apptrack/images/applicanttracking_leftimg.jpg HTTP/1.0" 304 0
> 149.199.60.202 - - [22/Oct/2003:18:28:30 -0400] "GET 
> /apptrack/images/applicanttracking_r2_c1.gif HTTP/1.0" 304 0
> 149.199.60.203 - - [22/Oct/2003:18:28:45 -0400] "POST 
> /apptrack/j_security_check HTTP/1.0" 302 0
> (***CRASH***)
> 149.199.60.203 - - [22/Oct/2003:18:28:45 -0400] "GET 
> /apptrack/s/myappinfo.jsp HTTP/1.0" 500 1085
> 149.199.60.203 - - [22/Oct/2003:18:28:50 -0400] "GET 
> /apptrack/login.jsp;jsessionid=E7F6276FD5958C2D224B0C182A47EB1F 
> HTTP/1.0" 500 1
> 085
>
> ********Sections of core dump file*************
> NULL 
> ------------------------------------------------------------------------
> 0SECTION       TITLE subcomponent dump routine
> NULL           ===============================
> 1TISIGINFO     signal 11 received
> 1TIDATETIME    Date:                 2003/10/22 at 18:28:45
> 1TIFILENAME    Javacore filename:    
> /home/tomcat/javacore.20031022.182845.3741.txt
> NULL 
> ------------------------------------------------------------------------
> 0SECTION       XHPI subcomponent dump routine
> NULL           ==============================
> 1HPTIME        Wed Oct 22 18:28:45 2003
> 1HPSIGRECV     SIGSEGV received in ?? at 0x41c55e85 in 
> /opt/IBMJava2-141/jre/bin/libjitc.so. Processing terminated.
> 1HPFULLVERSION J2RE 1.4.1 IBM build cxia32141-20030522
> NULL
> 1HPOPENV       Operating Environment
> NULL           ---------------------
> 2HPHOSTNAME    Host             : law5.(none)
> 2HPOSLEVEL     OS Level         : 2.4.20-20.8smp.#1 SMP Mon Aug 18 
> 14:39:22 EDT 2003
> 2HPLIBCVER     glibc Version    : 2.3.2
> 2HPCPUS        Processors -
> 3HPARCH          Architecture     : (not implemented)
> 3HPNUMCPUS       How Many         : (not implemented)
> 3HPCPUSENABLED   Enabled          : 4
>
> **snip **
>
> 1XMEXCPINFO    Exception Info
> NULL           --------------
> 2XMEXCPINFO    JVM Exception 0x2 (subcode 0x0) occurred in thread 
> "Ajp13Processor[8009][7]" (TID:0x10068790)
> NULL
> 2XMNATIVESTACK Native stack at exception generation:
> 3XMSTACKINFO   Program Name                                 Entry 
> Name                       Statement ID
> 3XMSTACKINFO
> NULL
> NULL
> NULL
> 1XMTHDINFO     Thread Info
> NULL           -----------
> NULL
> 2XMFULLTHDDUMP Full thread dump Classic VM (J2RE 1.4.1 IBM build 
> cxia32141-20030522, native threads):
> 3XMTHREADINFO      "Ajp13Processor[8009][13]" (TID:0x10068490, 
> sys_thread_t:0x891A140, state:R, native ID:0x7801F) prio=5
> 4XESTACKTRACE          at 
> java.net.SocketInputStream.socketRead0(Native Method)
> 4XESTACKTRACE          at 
> java.net.SocketInputStream.read(SocketInputStream.java(Compiled Code))
> 4XESTACKTRACE          at 
> org.apache.ajp.Ajp13.readN(Ajp13.java(Compiled Code))
> 4XESTACKTRACE          at 
> org.apache.ajp.Ajp13.receive(Ajp13.java(Compiled Code))
> 4XESTACKTRACE          at 
> org.apache.ajp.Ajp13.receiveNextRequest(Ajp13.java:274)
> 4XESTACKTRACE          at 
> org.apache.ajp.tomcat4.Ajp13Processor.process(Ajp13Processor.java:396)
> 4XESTACKTRACE          at 
> org.apache.ajp.tomcat4.Ajp13Processor.run(Ajp13Processor.java:585)
> 4XESTACKTRACE          at java.lang.Thread.run(Thread.java:568)
>
>
> George Payne
> Law ITC
> University of Virginia School of Law
>
>
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