Java HotSpot Virtual Machine

Hi,

JVM crashes intermittemtly. can you pleas help me anlysising the below fatal error log?

#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
# SIGSEGV (0xb) at pc=0xfeeb19c8, pid=15192, tid=133
#
# Java VM: Java HotSpot(TM) Server VM (1.5.0_16-b02 mixed mode)
# Problematic frame:
# V [libjvm.so+0x6b19c8]
#

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

Current thread (0x03ad0ec8): JavaThread "ExecuteThread: '4' for queue: 'weblogic.kernel.System'" daemon [_thread_in_vm, id=133]

siginfo:si_signo=11, si_errno=0, si_code=1, si_addr=0x00000004

Registers:
O0=0x3fedb504 O1=0x00000280 O2=0xffffffff O3=0x0000000e
O4=0x00000070 O5=0x0000007b O6=0x3fedb480 O7=0xfeeb1960
G1=0x00000280 G2=0xffffffff G3=0xf923549c G4=0x00000004
G5=0xf9235534 G6=0x00000000 G7=0x40571a00 Y=0x00000000
PC=0xfeeb19c8 nPC=0xfeeb19cc


Top of Stack: (sp=0x3fedb480)
0x3fedb480: 010e6ba0 042e56e8 010e2008 00000000
0x3fedb490: 00000280 00000000 012f84ec 012f84e8
0x3fedb4a0: f9233d08 00000258 3fedbffc 00000258
0x3fedb4b0: ffffffff 010e9ffc 3fedb508 feeb1334
0x3fedb4c0: ff030118 00008c68 f9233d08 3fedb888
0x3fedb4d0: f923412c f92341d4 00000000 ff034460
0x3fedb4e0: 3fedb508 feeb1354 f923549c 00000036
0x3fedb4f0: 00000000 ffff0000 f92341e1 012f84e8

Instructions: (pc=0xfeeb19c8)
0xfeeb19b8: 94 10 3f ff aa 10 00 08 f2 06 20 14 90 07 bf fc
0xfeeb19c8: f4 05 60 04 b0 06 00 19 7f ea 10 82 b0 06 00 1a

Stack: [0x3fed0000,0x3fef0000), sp=0x3fedb480, free space=45k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x6b19c8]
V [libjvm.so+0x6b133c]
V [libjvm.so+0x6b1608]
v ~ExceptionBlob
J com.wily.introscope.autoprobe.AutoProbeTransformer.transform(ZLjava/lang/ClassLoader;Ljava/lang/String;Ljava/lang/Class;Ljava/security/ProtectionDomain;[B)[B
v ~I2CAdapter
j com.wily.introscope.agent.transformer.TransformerAdministrator.doTransformClass(Ljava/lang/String;Lcom/wily/introscope/agent/transformer/ClassFileTransformer;ZLjava/lang/ClassLoader;Ljava/lang/String;Ljava/lang/Class;Ljava/security/ProtectionDomain;[B)[B+15
v ~C2IAdapter
J com.wily.introscope.agent.transformer.TransformerAdministrator.transformClass(ZLjava/lang/ClassLoader;Ljava/lang/String;Ljava/lang/Class;Ljava/security/ProtectionDomain;[B)[B
v ~I2CAdapter
j com.wily.introscope.agent.enterprise.EnterpriseAgent.IAgent_transformClass(ZLjava/lang/ClassLoader;Ljava/lang/String;Ljava/lang/Class;Ljava/security/ProtectionDomain;[B)[B+13
j com.wily.introscope.agent.AgentShim.ProbeBuilderEntryPoint_transformClass(ZLjava/lang/ClassLoader;Ljava/lang/String;Ljava/lang/Class;Ljava/security/ProtectionDomain;[B)[B+30
v ~C2IAdapter
J sun.instrument.InstrumentationImpl.transform(Ljava/lang/ClassLoader;Ljava/lang/String;Ljava/lang/Class;Ljava/security/ProtectionDomain;[B)[B
v ~I2CAdapter
v ~StubRoutines::call_stub
V [libjvm.so+0x19b310]
V [libjvm.so+0x1f5788]
V [libjvm.so+0x2e393c]
C [libinstrument.so+0x40a0]
C [libinstrument.so+0x25a0]
V [libjvm.so+0x61881c]
V [libjvm.so+0x1d6cb4]
V [libjvm.so+0x2abe74]
V [libjvm.so+0x2b620c]
C [libjava.so+0x11004] Java_java_lang_ClassLoader_defineClass1+0x234
j java.lang.ClassLoader.defineClass1(Ljava/lang/String;[BIILjava/security/ProtectionDomain;Ljava/lang/String;)Ljava/lang/Class;+586
j java.lang.ClassLoader.defineClass1(Ljava/lang/String;[BIILjava/security/ProtectionDomain;Ljava/lang/String;)Ljava/lang/Class;+0
v ~C2IAdapter
J java.lang.ClassLoader.defineClass(Ljava/lang/String;[BIILjava/security/ProtectionDomain;)Ljava/lang/Class;
v ~I2CAdapter
j java.security.SecureClassLoader.defineClass(Ljava/lang/String;[BIILjava/security/CodeSource;)Ljava/lang/Class;+27
j java.net.URLClassLoader.defineClass(Ljava/lang/String;Lsun/misc/Resource;)Ljava/lang/Class;+253
v ~C2IAdapter
J java.net.URLClassLoader$1.run()Ljava/lang/Object;
v ~I2CAdapter
v ~StubRoutines::call_stub
V [libjvm.so+0x19b310]
V [libjvm.so+0x225ab8]
C [libjava.so+0xee7c] Java_java_security_AccessController_doPrivileged__Ljava_security_PrivilegedExceptionAction_2Ljava_security_AccessControlContext_2+0x1c
j java.security.AccessController.doPrivileged(Ljava/security/PrivilegedExceptionAction;Ljava/security/AccessControlContext;)Ljava/lang/Object;+1734689212
j java.security.AccessController.doPrivileged(Ljava/security/PrivilegedExceptionAction;Ljava/security/AccessControlContext;)Ljava/lang/Object;+0
v ~C2IAdapter
J java.net.URLClassLoader.findClass(Ljava/lang/String;)Ljava/lang/Class;
J java.lang.ClassLoader.loadClass(Ljava/lang/String;Z)Ljava/lang/Class;
J java.lang.ClassLoader.loadClass(Ljava/lang/String;)Ljava/lang/Class;
v ~I2CAdapter
j java.lang.ClassLoader.loadClassInternal(Ljava/lang/String;)Ljava/lang/Class;+2
v ~StubRoutines::call_stub
V [libjvm.so+0x19b310]
V [libjvm.so+0x292d68]
V [libjvm.so+0x1ce240]
V [libjvm.so+0x170870]
V [libjvm.so+0x6c9e4c]
V [libjvm.so+0x40419c]
V [libjvm.so+0x1d7c9c]
V [libjvm.so+0x2abe74]
V [libjvm.so+0x2b620c]
C [libjava.so+0x11004] Java_java_lang_ClassLoader_defineClass1+0x234
j java.lang.ClassLoader.defineClass1(Ljava/lang/String;[BIILjava/security/ProtectionDomain;Ljava/lang/String;)Ljava/lang/Class;+586
j java.lang.ClassLoader.defineClass1(Ljava/lang/String;[BIILjava/security/ProtectionDomain;Ljava/lang/String;)Ljava/lang/Class;+0
v ~C2IAdapter
J java.lang.ClassLoader.defineClass(Ljava/lang/String;[BIILjava/security/ProtectionDomain;)Ljava/lang/Class;
v ~I2CAdapter
j java.security.SecureClassLoader.defineClass(Ljava/lang/String;[BIILjava/security/CodeSource;)Ljava/lang/Class;+27
j java.net.URLClassLoader.defineClass(Ljava/lang/String;Lsun/misc/Resource;)Ljava/lang/Class;+253
v ~C2IAdapter
J java.net.URLClassLoader$1.run()Ljava/lang/Object;
v ~I2CAdapter
v ~StubRoutines::call_stub
V [libjvm.so+0x19b310]
V [libjvm.so+0x225ab8]
C [libjava.so+0xee7c] Java_java_security_AccessController_doPrivileged__Ljava_security_PrivilegedExceptionAction_2Ljava_security_AccessControlContext_2+0x1c
j java.security.AccessController.doPrivileged(Ljava/security/PrivilegedExceptionAction;Ljava/security/AccessControlContext;)Ljava/lang/Object;+1734696572
j java.security.AccessController.doPrivileged(Ljava/security/PrivilegedExceptionAction;Ljava/security/AccessControlContext;)Ljava/lang/Object;+0
v ~C2IAdapter
J java.net.URLClassLoader.findClass(Ljava/lang/String;)Ljava/lang/Class;
J java.lang.ClassLoader.loadClass(Ljava/lang/String;Z)Ljava/lang/Class;
J java.lang.ClassLoader.loadClass(Ljava/lang/String;)Ljava/lang/Class;
v ~I2CAdapter
j java.lang.ClassLoader.loadClassInternal(Ljava/lang/String;)Ljava/lang/Class;+2
v ~StubRoutines::call_stub
V [libjvm.so+0x19b310]
V [libjvm.so+0x292d68]
V [libjvm.so+0x1ce240]
V [libjvm.so+0x170870]
V [libjvm.so+0x6c9e4c]
V [libjvm.so+0x1d8204]
V [libjvm.so+0x2abe74]
V [libjvm.so+0x2b620c]
C [libjava.so+0x11004] Java_java_lang_ClassLoader_defineClass1+0x234
j java.lang.ClassLoader.defineClass1(Ljava/lang/String;[BIILjava/security/ProtectionDomain;Ljava/lang/String;)Ljava/lang/Class;+586