I have been trying to convince Sun people that 1.3.1 and 1.3.1_01 HotSpot has problems on Linux, but they wouldn't buy it.
My suggestion is: use IBM's JDK 1.3.0. It is faster and more stable then Sun's. Bojan Eddie Ruvinsky wrote: > Hi all, > > Would anyone happen to know the fix to this? This may > or may not be directly related to Tomcat, but I > noticed a somewhat relevant thread about segfaults > occuring when invoking a JVM via JNI in the tomcat-dev > mailing list archives. > > Any advice would be appreciated on how to address this > issue on JDK 1.3.1_01. > > Thanks very much, > Eddie > ____________ > > OVERVIEW: > > When running Tomcat 4.0 via the Java launcher in a gdb > debugging session (Red Hat Linux 6.2, JDK 1.3.1_01), I > get a SIGSEGV signal (Segmentation fault) when I > execute some of the example JSPs/servlets. Since > Tomcat is pure Java, I'm assuming the problem is most > likely with the JVM and the way it handles signals, or > possibly with gdb since I only see this behavior with > gdb. The problem is fairly reproducible; I usually > get it when I execute the "ErrorPage" JSP sample in > Tomcat's "examples" webapp. > > Note that I don't see these signals when running the > JVM standalone (outside of gdb). What's also weird is > that I successfully tell gdb to "continue" after the > segfault, and the app continues to work like nothing > ever happend. > > As an aside, the reason why I did this test was > because I was experiencing very similar problems in my > own application that embeds a JVM via JNI. > > > DESCRIPTION: > > Here is what I did to see the problem. > > First, I set the debugger in the environment, so that > the jdk/bin/java script can run the java launcher in > gdb: > > export DEBUG_PROG=gdb > > Next, I run the jdk/bin/java script: > > cd jdk1.3.1_01/bin > java > > This brings up the Java launcher within gdb, and I run > it as I specify the necessary arguments to startup > Tomcat: > > GNU gdb 19991004 > Copyright 1998 Free Software Foundation, Inc. > GDB is free software, covered by the GNU General > Public License, and you are > welcome to change it and/or distribute copies of it > under certain conditions. > Type "show copying" to see the conditions. > There is absolutely no warranty for GDB. Type "show > warranty" for details. > This GDB was configured as "i386-redhat-linux"... > (gdb) set args -classpath > >/u0/ruvinsky/tomcat4.bin/bin/bootstrap.jar:/u0/ruvinsky/src-java-launcher/jdk1.3.1_01/lib/tools.jar > -Dcatalina.base=/u0/ruvinsky/tomcat4.bin > -Dcatalina.home=/u0/ruvinsky/tomcat4.bin > org.apache.catalina.startup.Bootstrap start > (gdb) run > Starting program: > /u0/ruvinsky/src-java-launcher/jdk1.3.1_01/bin/i386/native_threads/java > -classpath > >/u0/ruvinsky/tomcat4.bin/bin/bootstrap.jar:/u0/ruvinsky/src-java-launcher/jdk1.3.1_01/lib/tools.jar > -Dcatalina.base=/u0/ruvinsky/tomcat4.bin > -Dcatalina.home=/u0/ruvinsky/tomcat4.bin > org.apache.catalina.startup.Bootstrap start > [New Thread 1710 (manager thread)] > [New Thread 1709 (initial thread)] > [New Thread 1711] > [New Thread 1712] > [New Thread 1713] > [New Thread 1714] > [New Thread 1715] > [New Thread 1716] > [New Thread 1717] > Starting service Tomcat-Standalone > Apache Tomcat/4.0 > [New Thread 1720] > [New Thread 1721] > [New Thread 1722] > [New Thread 1723] > [New Thread 1724] > [New Thread 1725] > [New Thread 1726] > [New Thread 1727] > [New Thread 1728] > [New Thread 1729] > [New Thread 1730] > [New Thread 1731] > Starting service Tomcat-Apache > Apache Tomcat/4.0 > [New Thread 1732] > [Switching to Thread 1730] > > Program received signal SIGSEGV, Segmentation fault. > 0x2bfee3f4 in ?? () > (gdb) continue > Continuing. > > I even tried building a debug version of the java > launcher by hand in hope of finding a more detailed > stack trace, but all I got was the following: > > (gdb) bt > #0 0x806973d in ?? () > #1 0x8060891 in ?? () > #2 0x8060891 in ?? () > #3 0x8060963 in ?? () > #4 0x8060891 in ?? () > #5 0x8060891 in ?? () > #6 0x8060891 in ?? () > #7 0x8060963 in ?? () > #8 0x8060891 in ?? () > #9 0x8060891 in ?? () > #10 0x8060963 in ?? () > #11 0x8060891 in ?? () > #12 0x8060963 in ?? () > #13 0x8060963 in ?? () > #14 0x8060963 in ?? () > #15 0x8060963 in ?? () > #16 0x8060963 in ?? () > #17 0x8060891 in ?? () > #18 0x8060963 in ?? () > #19 0x8060891 in ?? () > #20 0x8060963 in ?? () > #21 0x8060963 in ?? () > #22 0x8060963 in ?? () > #23 0x8060963 in ?? () > #24 0x8060891 in ?? () > #25 0x8060963 in ?? () > #26 0x8060963 in ?? () > #27 0x8060963 in ?? () > #28 0x8060891 in ?? () > #29 0x8060963 in ?? () > #30 0x8060963 in ?? () > #31 0x8060891 in ?? () > #32 0x8060963 in ?? () > #33 0x2add3d70 in StubRoutines::_code1 () > from > /u0/ruvinsky/src-java-launcher/jdk1.3.1_01/jre/lib/i386/client/libjvm.so > #34 0x2abcb604 in JavaCalls::call_helper () > from > /u0/ruvinsky/src-java-launcher/jdk1.3.1_01/jre/lib/i386/client/libjvm.so > #35 0x2ac2948d in os::os_exception_wrapper () > from > /u0/ruvinsky/src-java-launcher/jdk1.3.1_01/jre/lib/i386/client/libjvm.so > #36 0x2abcb840 in JavaCalls::call () > from > /u0/ruvinsky/src-java-launcher/jdk1.3.1_01/jre/lib/i386/client/libjvm.so > #37 0x2abcb1bb in JavaCalls::call_virtual () > from > /u0/ruvinsky/src-java-launcher/jdk1.3.1_01/jre/lib/i386/client/libjvm.so > #38 0x2abcbccb in JavaCalls::call_virtual () > from > /u0/ruvinsky/src-java-launcher/jdk1.3.1_01/jre/lib/i386/client/libjvm.so > #39 0x2abede80 in thread_entry () > from > /u0/ruvinsky/src-java-launcher/jdk1.3.1_01/jre/lib/i386/client/libjvm.so > #40 0x2ac599c7 in JavaThread::thread_main_inner () > from > /u0/ruvinsky/src-java-launcher/jdk1.3.1_01/jre/lib/i386/client/libjvm.so > #41 0x2ac56903 in JavaThread::run () > from > /u0/ruvinsky/src-java-launcher/jdk1.3.1_01/jre/lib/i386/client/libjvm.so > #42 0x2ac27e73 in _start () > from > /u0/ruvinsky/src-java-launcher/jdk1.3.1_01/jre/lib/i386/client/libjvm.so > #43 0x2aacc535 in pthread_start_thread > (arg=0x7d3ffe40) at manager.c:241 > > (gdb) info shared > From To Syms Read Shared Object > Library > 0x2aac7000 0x2aad8ad8 Yes > /lib/libpthread.so.0 > 0x2aad9000 0x2aae2e38 Yes > /u0/ruvinsky/src-java-launcher/jdk1.3.1_01/jre/lib/i386/native_threads/libhpi.so > 0x2aae3000 0x2addce90 Yes > /u0/ruvinsky/src-java-launcher/jdk1.3.1_01/jre/lib/i386/client/libjvm.so > 0x2addd000 0x2addfd0c Yes /lib/libdl.so.2 > 0x2ade1000 0x2aed537c Yes /lib/libc.so.6 > 0x2aed6000 0x2aeeb1c8 Yes /lib/libnsl.so.1 > 0x2aeec000 0x2af08098 Yes /lib/libm.so.6 > 0x2af09000 0x2af4af90 Yes > /usr/lib/libstdc++-libc6.1-1.so.2 > 0x2aaab000 0x2aabecb0 Yes /lib/ld-linux.so.2 > 0x2af4b000 0x2af5d414 Yes > /u0/ruvinsky/src-java-launcher/jdk1.3.1_01/jre/lib/i386/libverify.so > 0x2af5e000 0x2af81fe8 Yes > /u0/ruvinsky/src-java-launcher/jdk1.3.1_01/jre/lib/i386/libjava.so > 0x2af82000 0x2af98360 Yes > /u0/ruvinsky/src-java-launcher/jdk1.3.1_01/jre/lib/i386/libzip.so > 0x340c6000 0x340ce9a0 Yes > /lib/libnss_files.so.2 > 0x340cf000 0x340d8fb4 Yes > /lib/libnss_nisplus.so.2 > 0x340d9000 0x340e21f8 Yes > /lib/libnss_nis.so.2 > 0x343e9000 0x343f242c Yes > /u0/ruvinsky/src-java-launcher/jdk1.3.1_01/jre/lib/i386/libnet.so > 0x343fa000 0x343fd850 Yes > /lib/libnss_dns.so.2 > 0x3497f000 0x3498d9fc Yes > /lib/libresolv.so.2 > > As a reference, I built the Java launcher code > included in the JDK 1.3.1_01 distribution, producing > the replacement binary for: > > jdk1.3.1_01/bin/i386/native_threads/java > > I copied the source files out of the > jdk1.3.1_01/src/src/launcher/ directory, and they > consist of the following files: > > java.c > java.h > java_md.c > java_md.h > > My build directory also contains the jdk1.3.1_01 > subdirectory to include the JNI headers from and as a > sample jdk to test the build output with. > > The following are my build commands (mainly borrowed > from the JDK build process): > > cc -g -W -Wall -Werror -Wno-unused -Wno-parentheses > -Di386 -DARCH='"i386"' -DSOLARIS2 > -DRELEASE='"1.3.1-testing-110101"' > -DFULL_VERSION='"1.3.1-testing-110101"' > -D_LARGEFILE64_SOURCE -D_GNU_SOURCE -D_REENTRANT > -D_LITTLE_ENDIAN -DUSE_APPHOME -DPROGNAME='"java"' > -I./jdk1.3.1_01/include -I./jdk1.3.1_01/include/linux > -c -o build/objs/java.o java.c > > cc -g -W -Wall -Werror -Wno-unused -Wno-parentheses > -Di386 -DARCH='"i386"' -DSOLARIS2 > -DRELEASE='"1.3.1-testing-110101"' > -DFULL_VERSION='"1.3.1-testing-110101"' > -D_LARGEFILE64_SOURCE -D_GNU_SOURCE -D_REENTRANT > -D_LITTLE_ENDIAN -DUSE_APPHOME -DPROGNAME='"java"' > -I./jdk1.3.1_01/include -I./jdk1.3.1_01/include/linux > -c -o build/objs/java_md.o java_md.c > > cc -o jdk1.3.1/bin/i386/native_threads/java -z defs > -Ljdk1.3.1_01/jre/lib/i386/native_threads > -Ljdk1.3.1_01/jre/lib/i386/classic build/objs/java.o > build/objs/java_md.o -lpthread -lhpi -ljvm -ldl -lc > > > __________________________________________________ > Do You Yahoo!? > Find a job, post your resume. > http://careers.yahoo.com > > -- > To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> > For additional commands, e-mail: <mailto:[EMAIL PROTECTED]> > -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
