4 Replies Latest reply: Oct 20, 2011 12:48 PM by Georges Berscheid RSS

JVM crashes on AS 7 with Native libraries using mod_jk

guinotphil Apprentice



I’m currently having a trouble with the JBoss Native libraries on JBoss AS7.


First, here is my environment:

OS: Linux CentOS 6 x64

Apache version: Apache/2.2.15

Java version: JDK 1.6.0_26 x64

mod_jk: built from sources, tomcat-connectors-1.2.32-src.tar.gz

JBoss AS: 7.1.0 nighly built (not the latest version, from late August)


JBoss Native, I’ve tried both versions jboss-native-2.0.9-linux2-x64-ssl.tar.gz and jboss-native-2.0.10-linux2-x64-ssl.tar.gz


Installation method: I’m not really sure if I install mod_jk the right way. I untared the binaries into my JBoss AS 7 installation (which is in /opt/jboss-as/) and added the following parameter to standalone.conf

JAVA_OPTS="$JAVA_OPTS -Djava.library.path=/opt/jboss-as/bin/native"

However, when starting the server, it still logged that it couldn’t find the native libraries and I figured out that I had to do the following symlink:

mkdir -p /opt/jboss-as/standalone/tmp/bin/META-INF/lib/linux2

cd /opt/jboss-as/standalone/tmp/bin/META-INF/lib/linux2

ln -s ../../../../../../bin/native x64


(Note: in a Windows environment, JBoss found the native libraries without that symlink. But I haven’t tested using mod_jk under Windows)


Without the native libraries, I can use mod_jk perfectly. But since I install them as above, at the first HTTP request I get a JVM crash. Here is the summary of the crash, I can post the full details if needed



# A fatal error has been detected by the Java Runtime Environment:


#  SIGSEGV (0xb) at pc=0x00007f654c963378, pid=16452, tid=140070285702912


# JRE version: 6.0_26-b03

# Java VM: Java HotSpot(TM) 64-Bit Server VM (20.1-b02 mixed mode linux-amd64 compressed oops)

# Problematic frame:

# C  [libapr-1.so.0.3.12+0x1d378]  signed char+0x68


# If you would like to submit a bug report, please visit:

# http://java.sun.com/webapps/bugreport/crash.jsp

# The crash happened outside the Java Virtual Machine in native code.

# See problematic frame for where to report the bug.



---------------  T H R E A D ---------------


Current thread (0x00007f64ec143800):  JavaThread "ajp--" daemon [_thread_in_native, id=16498, stack(0x00007f64a78f7000,0x00007f64a79f8000)]


siginfo:si_signo=SIGSEGV: si_errno=0, si_code=1 (SEGV_MAPERR), si_addr=0x0000000000000008





Stack: [0x00007f64a78f7000,0x00007f64a79f8000], sp=0x00007f64a79f6810,  free space=1022k

Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)

C  [libapr-1.so.0.3.12+0x1d378]  signed char+0x68


Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)

j org.apache.tomcat.jni.Poll.add(JJI)I+0

j org.apache.tomcat.util.net.AprEndpoint$Poller.addToPoller(JI)Z+35

j org.apache.tomcat.util.net.AprEndpoint$Poller.run()V+464

j java.lang.Thread.run()V+11


---------------  P R O C E S S ---------------


Java Threads: ( => current thread )

=>0x00007f64ec143800 JavaThread "ajp--" daemon [_thread_in_native, id=16498, stack(0x00007f64a78f7000,0x00007f64a79f8000)]



VM Arguments:

jvm_args: -Xms512m -Xmx2000m -XX:MaxPermSize=256M -Djava.net.preferIPv4Stack=true -Dorg.jboss.resolver.warning=true -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000 -Djboss.modules.system.pkgs=org.jboss.byteman -Djava.awt.headless=true -Djava.library.path=/opt/jboss-as/bin/native -Djbo.use.pers.coll=false -Djbo.passivationstore=file -Djbo.tmpdir=/temp/jbo/ -XX:CompileCommand=exclude,oracle/sql/NUMBER,toBytes -Duser.country=US -Duser.language=en -DNLS_LANG=AMERICAN_AMERICA.UTF8 -Dfile.encoding=UTF-8 -Djavax.xml.bind.JAXBContext=com.sun.xml.bind.v2.ContextFactory -Dorg.jboss.boot.log.file=/opt/jboss-as/standalone/log/boot.log -Dlogging.configuration=file:/opt/jboss-as/standalone/configuration/logging.properties

java_command: /opt/jboss-as/jboss-modules.jar -mp /opt/jboss-as/modules -logmodule org.jboss.logmanager -jaxpmodule javax.xml.jaxp-provider org.jboss.as.standalone -Djboss.home.dir=/opt/jboss-as

Launcher Type: SUN_STANDARD


Environment Variables:






Signal Handlers:

SIGSEGV: [libjvm.so+0x85f800], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004

SIGBUS: [libjvm.so+0x85f800], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004

SIGFPE: [libjvm.so+0x70e300], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004

SIGPIPE: [libjvm.so+0x70e300], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004

SIGXFSZ: [libjvm.so+0x70e300], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004

SIGILL: [libjvm.so+0x70e300], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004

SIGUSR1: SIG_DFL, sa_mask[0]=0x00000000, sa_flags=0x00000000

SIGUSR2: [libjvm.so+0x711110], sa_mask[0]=0x00000000, sa_flags=0x10000004

SIGHUP: [libjvm.so+0x710d10], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004

SIGINT: SIG_IGN, sa_mask[0]=0x00000000, sa_flags=0x00000000

SIGTERM: [libjvm.so+0x710d10], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004

SIGQUIT: [libjvm.so+0x710d10], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004



---------------  S Y S T E M ---------------


OS:CentOS Linux release 6.0 (Final)


uname:Linux 2.6.32-71.el6.x86_64 #1 SMP Fri May 20 03:51:51 BST 2011 x86_64

libc:glibc 2.12 NPTL 2.12

rlimit: STACK 10240k, CORE 0k, NPROC 1024, NOFILE 1024, AS infinity

load average:0.56 0.28 0.10



MemTotal:       16317844 kB

MemFree:         9626772 kB

Buffers:          179080 kB

Cached:          4108912 kB

SwapCached:            0 kB

Active:          3052908 kB

Inactive:        2881584 kB

Active(anon):    1646884 kB

Inactive(anon):     1676 kB

Active(file):    1406024 kB

Inactive(file):  2879908 kB

Unevictable:           0 kB

Mlocked:               0 kB

SwapTotal: 18563064 kB

SwapFree:       18563064 kB

Dirty:               128 kB

Writeback:             0 kB

AnonPages:       1654892 kB

Mapped:            59948 kB

Shmem:              2036 kB

Slab:             659732 kB

SReclaimable:     300400 kB

SUnreclaim:       359332 kB

KernelStack: 3224 kB

PageTables:        20336 kB

NFS_Unstable:          0 kB

Bounce:                0 kB

WritebackTmp:          0 kB

CommitLimit:    26721984 kB

Committed_AS:    1781628 kB

VmallocTotal:   34359738367 kB

VmallocUsed:      310208 kB

VmallocChunk:   34350788272 kB

HardwareCorrupted:     0 kB

AnonHugePages: 1017856 kB

HugePages_Total:       0

HugePages_Free:        0

HugePages_Rsvd:        0

HugePages_Surp:        0

Hugepagesize:       2048 kB

DirectMap4k:        7652 kB

DirectMap2M: 16756736 kB



CPU:total 8 (4 cores per cpu, 1 threads per core) family 6 model 26 stepping 5, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3, sse4.1, sse4.2, popcnt




Memory: 4k page, physical 16317844k(9626772k free), swap 18563064k(18563064k free)


vm_info: Java HotSpot(TM) 64-Bit Server VM (20.1-b02) for linux-amd64 JRE (1.6.0_26-b03), built on May  4 2011 01:13:47 by "java_re" with gcc 3.2.2 (SuSE Linux)


time: Fri Sep  9 10:43:18 2011

elapsed time: 126 seconds