Related information--search for LD_ASSUME_KERNEL in this list.
The LD_ASSUME_KERNEL setting did not fix my particular issue, so it is still unresolved whether it actually applies to RedHat 8.0 with newest kernel--kernel notes seem to suggest the problem thread libraries ARE a part of the 2.4.20-20 kernel.
Switching to Sun JVM 1.4.2_2 did solve the problem (I do not use the LD_ASSUME_KERNEL with the Sun jvm)
I never did any deep thinking (har!) about why this was exclusively a problem with http/1.0 clients, but the new JVM fixes the problem.
================================================================
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:
linux -- 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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