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Posted to dev@geronimo.apache.org by "Kevan Miller (JIRA)" <ji...@apache.org> on 2008/12/10 16:06:44 UTC

[jira] Created: (GERONIMO-4458) Another ClassLoader deadlock during server startup

Another ClassLoader deadlock during server startup
--------------------------------------------------

                 Key: GERONIMO-4458
                 URL: https://issues.apache.org/jira/browse/GERONIMO-4458
             Project: Geronimo
          Issue Type: Bug
      Security Level: public (Regular issues)
    Affects Versions: 2.2
            Reporter: Kevan Miller
            Priority: Critical
             Fix For: 2.2


G 2.2 TCK testing is running into a ClassLoader deadlock. Here are the stacktraces:

{noformat}
Found one Java-level deadlock:
=============================
"RMI TCP Connection(4)-9.42.75.229":
 waiting to lock monitor 0x0849be70 (object 0xd57192c8, a org.apache.geronimo.kernel.config.MultiParentClassLoader),
 which is held by "main"
"main":
 waiting to lock monitor 0x0849bed4 (object 0xd50ca400, a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader),
 which is held by "RMI TCP Connection(4)-9.42.75.229"

Java stack information for the threads listed above:
===================================================
"RMI TCP Connection(4)-9.42.75.229":
       at org.aspectj.weaver.tools.WeavingAdaptor$WeavingAdaptorMessageHolder.<init>(WeavingAdaptor.java:498)
       at org.aspectj.weaver.tools.WeavingAdaptor.createMessageHandler(WeavingAdaptor.java:179)
       at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.initialize(ClassLoaderWeavingAdaptor.java:111)
       at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.initialize(Aj.java:151)
       at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.getWeavingAdaptor(Aj.java:156)
       at org.aspectj.weaver.loadtime.Aj$WeaverContainer.getWeaver(Aj.java:122)
       at org.aspectj.weaver.loadtime.Aj.preProcess(Aj.java:73)
       - locked <0xd4f23b40> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
       at org.aspectj.weaver.loadtime.ClassPreProcessorAgentAdapter.transform(ClassPreProcessorAgentAdapter.java:52)
       at org.apache.geronimo.transformer.TransformerCollection.transform(TransformerCollection.java:43)
       at sun.instrument.TransformerManager.transform(TransformerManager.java:169)
       at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:365)
       at java.lang.ClassLoader.defineClass1(Native Method)
       at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
       at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
       at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
       at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
       at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
       at java.security.AccessController.doPrivileged(Native Method)
       at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
       at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClassInternal(MultiParentClassLoader.java:455)
       - locked <0xd4f23b40> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
       at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:69)
       - locked <0xd4ea35c8> (a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
       at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
       at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
       - locked <0xd50ca440> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
       at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClassInternal(MultiParentClassLoader.java:441)
       - locked <0xd50ca440> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
       at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:69)
       - locked <0xd50ca400> (a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
       at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
       at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
       - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
       at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:392)
       - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
       at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:255)
       - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
       at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
       at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
       - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
       at java.lang.Class.getDeclaredConstructors0(Native Method)
       at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
       at java.lang.Class.getConstructor0(Class.java:2699)
       at java.lang.Class.newInstance0(Class.java:326)
       at java.lang.Class.newInstance(Class.java:308)
       at org.apache.geronimo.security.jaas.ClassOptionLoginModule.initialize(ClassOptionLoginModule.java:50)
       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
       at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:597)
       at javax.security.auth.login.LoginContext.invoke(LoginContext.java:756)
       at javax.security.auth.login.LoginContext.access$000(LoginContext.java:186)
       at javax.security.auth.login.LoginContext$4.run(LoginContext.java:683)
       at java.security.AccessController.doPrivileged(Native Method)
       at javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:680)
       at javax.security.auth.login.LoginContext.login(LoginContext.java:579)
       at org.apache.geronimo.jmxremoting.Authenticator.authenticate(Authenticator.java:68)
       at javax.management.remote.rmi.RMIServerImpl.doNewClient(RMIServerImpl.java:213)
       at javax.management.remote.rmi.RMIServerImpl.newClient(RMIServerImpl.java:180)
       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
       at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:597)
       at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:305)
       at sun.rmi.transport.Transport$1.run(Transport.java:159)
       at java.security.AccessController.doPrivileged(Native Method)
       at sun.rmi.transport.Transport.serviceCall(Transport.java:155)
       at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)
       at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)
       at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)
       at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
       at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
       at java.lang.Thread.run(Thread.java:619)
"main":
       at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:61)
       - waiting to lock <0xd50ca400> (a
org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
       at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
       at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
       - locked <0xd51edbf8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
       at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClassInternal(MultiParentClassLoader.java:441)
       - locked <0xd51edbf8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
       at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:69)
       - locked <0xd51eec50> (a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
       at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
       at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
       - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
       at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:392)
       - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
       at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:255)
       - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
       at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
       at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
       - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
       at org.aspectj.weaver.tools.WeavingAdaptor$WeavingAdaptorMessageHolder.<init>(WeavingAdaptor.java:498)
       at org.aspectj.weaver.tools.WeavingAdaptor.createMessageHandler(WeavingAdaptor.java:179)
       at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.initialize(ClassLoaderWeavingAdaptor.java:111)
       at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.initialize(Aj.java:151)
       at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.getWeavingAdaptor(Aj.java:156)
       at org.aspectj.weaver.loadtime.Aj$WeaverContainer.getWeaver(Aj.java:122)
       at org.aspectj.weaver.loadtime.Aj.preProcess(Aj.java:73)
       - locked <0xd5712f78> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
       at org.aspectj.weaver.loadtime.ClassPreProcessorAgentAdapter.transform(ClassPreProcessorAgentAdapter.java:52)
       at org.apache.geronimo.transformer.TransformerCollection.transform(TransformerCollection.java:43)
       at sun.instrument.TransformerManager.transform(TransformerManager.java:169)
       at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:365)
       at java.lang.ClassLoader.defineClass1(Native Method)
       at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
       at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
       at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
       at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
       at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
       at java.security.AccessController.doPrivileged(Native Method)
       at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
       at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:407)
       - locked <0xd5712f78> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
       at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:255)
       - locked <0xd5712f78> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
       at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
       at org.apache.geronimo.gbean.runtime.GBeanInstance.<init>(GBeanInstance.java:228)
       at org.apache.geronimo.kernel.basic.BasicKernel.loadGBean(BasicKernel.java:352)
       at org.apache.geronimo.kernel.config.ConfigurationUtil.startConfigurationGBeans(ConfigurationUtil.java:441)
       at org.apache.geronimo.kernel.config.KernelConfigurationManager.start(KernelConfigurationManager.java:190)
       at org.apache.geronimo.kernel.config.SimpleConfigurationManager.startConfiguration(SimpleConfigurationManager.java:562)
       - locked <0xd500a750> (a org.apache.geronimo.kernel.config.EditableKernelConfigurationManager)
       at sun.reflect.GeneratedMethodAccessor22.invoke(Unknown Source)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:597)
       at org.apache.geronimo.gbean.runtime.ReflectionMethodInvoker.invoke(ReflectionMethodInvoker.java:34)
       at org.apache.geronimo.gbean.runtime.GBeanOperation.invoke(GBeanOperation.java:130)
       at org.apache.geronimo.gbean.runtime.GBeanInstance.invoke(GBeanInstance.java:815)
       at org.apache.geronimo.gbean.runtime.RawInvoker.invoke(RawInvoker.java:57)
       at org.apache.geronimo.kernel.basic.RawOperationInvoker.invoke(RawOperationInvoker.java:35)
       at org.apache.geronimo.kernel.basic.ProxyMethodInterceptor.intercept(ProxyMethodInterceptor.java:96)
       at org.apache.geronimo.gbean.GBeanLifecycle$$EnhancerByCGLIB$$752a2ecb.startConfiguration(<generated>)
       at org.apache.geronimo.system.main.EmbeddedDaemon.doStartup(EmbeddedDaemon.java:161)
       at org.apache.geronimo.system.main.EmbeddedDaemon.execute(EmbeddedDaemon.java:78)
       at org.apache.geronimo.kernel.util.MainConfigurationBootstrapper.main(MainConfigurationBootstrapper.java:45)
       at org.apache.geronimo.cli.AbstractCLI.executeMain(AbstractCLI.java:65)
       at org.apache.geronimo.cli.daemon.DaemonCLI.main(DaemonCLI.java:30)
{noformat}



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[jira] Commented: (GERONIMO-4458) Another ClassLoader deadlock during server startup

Posted by "David Jencks (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/GERONIMO-4458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12656917#action_12656917 ] 

David Jencks commented on GERONIMO-4458:
----------------------------------------

This plan looks fine to me. Does transformer-agent has any parents other than the system classloader? If not I think the "if classloader is parent of transformer-agent, then ignore." is covered by the 2nd ignore.

> Another ClassLoader deadlock during server startup
> --------------------------------------------------
>
>                 Key: GERONIMO-4458
>                 URL: https://issues.apache.org/jira/browse/GERONIMO-4458
>             Project: Geronimo
>          Issue Type: Bug
>      Security Level: public(Regular issues) 
>    Affects Versions: 2.2
>            Reporter: Kevan Miller
>            Assignee: Kevan Miller
>            Priority: Critical
>             Fix For: 2.2
>
>
> G 2.2 TCK testing is running into a ClassLoader deadlock. Here are the stacktraces:
> {noformat}
> Found one Java-level deadlock:
> =============================
> "RMI TCP Connection(4)-9.42.75.229":
>  waiting to lock monitor 0x0849be70 (object 0xd57192c8, a org.apache.geronimo.kernel.config.MultiParentClassLoader),
>  which is held by "main"
> "main":
>  waiting to lock monitor 0x0849bed4 (object 0xd50ca400, a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader),
>  which is held by "RMI TCP Connection(4)-9.42.75.229"
> Java stack information for the threads listed above:
> ===================================================
> "RMI TCP Connection(4)-9.42.75.229":
>        at org.aspectj.weaver.tools.WeavingAdaptor$WeavingAdaptorMessageHolder.<init>(WeavingAdaptor.java:498)
>        at org.aspectj.weaver.tools.WeavingAdaptor.createMessageHandler(WeavingAdaptor.java:179)
>        at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.initialize(ClassLoaderWeavingAdaptor.java:111)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.initialize(Aj.java:151)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.getWeavingAdaptor(Aj.java:156)
>        at org.aspectj.weaver.loadtime.Aj$WeaverContainer.getWeaver(Aj.java:122)
>        at org.aspectj.weaver.loadtime.Aj.preProcess(Aj.java:73)
>        - locked <0xd4f23b40> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.aspectj.weaver.loadtime.ClassPreProcessorAgentAdapter.transform(ClassPreProcessorAgentAdapter.java:52)
>        at org.apache.geronimo.transformer.TransformerCollection.transform(TransformerCollection.java:43)
>        at sun.instrument.TransformerManager.transform(TransformerManager.java:169)
>        at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:365)
>        at java.lang.ClassLoader.defineClass1(Native Method)
>        at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
>        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
>        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
>        at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
>        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClassInternal(MultiParentClassLoader.java:455)
>        - locked <0xd4f23b40> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:69)
>        - locked <0xd4ea35c8> (a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd50ca440> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClassInternal(MultiParentClassLoader.java:441)
>        - locked <0xd50ca440> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:69)
>        - locked <0xd50ca400> (a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:392)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:255)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.Class.getDeclaredConstructors0(Native Method)
>        at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
>        at java.lang.Class.getConstructor0(Class.java:2699)
>        at java.lang.Class.newInstance0(Class.java:326)
>        at java.lang.Class.newInstance(Class.java:308)
>        at org.apache.geronimo.security.jaas.ClassOptionLoginModule.initialize(ClassOptionLoginModule.java:50)
>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at javax.security.auth.login.LoginContext.invoke(LoginContext.java:756)
>        at javax.security.auth.login.LoginContext.access$000(LoginContext.java:186)
>        at javax.security.auth.login.LoginContext$4.run(LoginContext.java:683)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:680)
>        at javax.security.auth.login.LoginContext.login(LoginContext.java:579)
>        at org.apache.geronimo.jmxremoting.Authenticator.authenticate(Authenticator.java:68)
>        at javax.management.remote.rmi.RMIServerImpl.doNewClient(RMIServerImpl.java:213)
>        at javax.management.remote.rmi.RMIServerImpl.newClient(RMIServerImpl.java:180)
>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:305)
>        at sun.rmi.transport.Transport$1.run(Transport.java:159)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at sun.rmi.transport.Transport.serviceCall(Transport.java:155)
>        at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)
>        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)
>        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)
>        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>        at java.lang.Thread.run(Thread.java:619)
> "main":
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:61)
>        - waiting to lock <0xd50ca400> (a
> org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd51edbf8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClassInternal(MultiParentClassLoader.java:441)
>        - locked <0xd51edbf8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:69)
>        - locked <0xd51eec50> (a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:392)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:255)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.aspectj.weaver.tools.WeavingAdaptor$WeavingAdaptorMessageHolder.<init>(WeavingAdaptor.java:498)
>        at org.aspectj.weaver.tools.WeavingAdaptor.createMessageHandler(WeavingAdaptor.java:179)
>        at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.initialize(ClassLoaderWeavingAdaptor.java:111)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.initialize(Aj.java:151)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.getWeavingAdaptor(Aj.java:156)
>        at org.aspectj.weaver.loadtime.Aj$WeaverContainer.getWeaver(Aj.java:122)
>        at org.aspectj.weaver.loadtime.Aj.preProcess(Aj.java:73)
>        - locked <0xd5712f78> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.aspectj.weaver.loadtime.ClassPreProcessorAgentAdapter.transform(ClassPreProcessorAgentAdapter.java:52)
>        at org.apache.geronimo.transformer.TransformerCollection.transform(TransformerCollection.java:43)
>        at sun.instrument.TransformerManager.transform(TransformerManager.java:169)
>        at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:365)
>        at java.lang.ClassLoader.defineClass1(Native Method)
>        at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
>        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
>        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
>        at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
>        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:407)
>        - locked <0xd5712f78> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:255)
>        - locked <0xd5712f78> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>        at org.apache.geronimo.gbean.runtime.GBeanInstance.<init>(GBeanInstance.java:228)
>        at org.apache.geronimo.kernel.basic.BasicKernel.loadGBean(BasicKernel.java:352)
>        at org.apache.geronimo.kernel.config.ConfigurationUtil.startConfigurationGBeans(ConfigurationUtil.java:441)
>        at org.apache.geronimo.kernel.config.KernelConfigurationManager.start(KernelConfigurationManager.java:190)
>        at org.apache.geronimo.kernel.config.SimpleConfigurationManager.startConfiguration(SimpleConfigurationManager.java:562)
>        - locked <0xd500a750> (a org.apache.geronimo.kernel.config.EditableKernelConfigurationManager)
>        at sun.reflect.GeneratedMethodAccessor22.invoke(Unknown Source)
>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at org.apache.geronimo.gbean.runtime.ReflectionMethodInvoker.invoke(ReflectionMethodInvoker.java:34)
>        at org.apache.geronimo.gbean.runtime.GBeanOperation.invoke(GBeanOperation.java:130)
>        at org.apache.geronimo.gbean.runtime.GBeanInstance.invoke(GBeanInstance.java:815)
>        at org.apache.geronimo.gbean.runtime.RawInvoker.invoke(RawInvoker.java:57)
>        at org.apache.geronimo.kernel.basic.RawOperationInvoker.invoke(RawOperationInvoker.java:35)
>        at org.apache.geronimo.kernel.basic.ProxyMethodInterceptor.intercept(ProxyMethodInterceptor.java:96)
>        at org.apache.geronimo.gbean.GBeanLifecycle$$EnhancerByCGLIB$$752a2ecb.startConfiguration(<generated>)
>        at org.apache.geronimo.system.main.EmbeddedDaemon.doStartup(EmbeddedDaemon.java:161)
>        at org.apache.geronimo.system.main.EmbeddedDaemon.execute(EmbeddedDaemon.java:78)
>        at org.apache.geronimo.kernel.util.MainConfigurationBootstrapper.main(MainConfigurationBootstrapper.java:45)
>        at org.apache.geronimo.cli.AbstractCLI.executeMain(AbstractCLI.java:65)
>        at org.apache.geronimo.cli.daemon.DaemonCLI.main(DaemonCLI.java:30)
> {noformat}

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[jira] Commented: (GERONIMO-4458) Another ClassLoader deadlock during server startup

Posted by "Kevan Miller (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/GERONIMO-4458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12656871#action_12656871 ] 

Kevan Miller commented on GERONIMO-4458:
----------------------------------------

Agreed that the contextclassloader change is not needed -- my mistake.

I agree that disallowing potentially cyclical classloader traversals will avoid deadlocks. I'll code this and assuming I'm happy with the implementation (and it works), will commit.

Note that I think we require the following checks during transform()

if classloader is parent of transformer-agent, then ignore.
if classloader is a parent of an individual ClassFileTransformer implementation, then ignore for the individual transformer.

I'm not advocating this for it's functionality, but it's needed to avoid deadlocks, given current config structure. The alternative is to compute the superset of all parents (transformer-agent parents and each ClassFileTransformer implementation parents). 

I think there are a few dependency issues which we should probably address while we're in the neighborhood...

1) wadi-clustering has a dependency on the aspectj config, I don't know why that's needed...
2) GERONIMO-3141 moved transformer-agent jars into the system classpath. I don't think that will be needed any longer and the jars can move back to transformer-agent.



> Another ClassLoader deadlock during server startup
> --------------------------------------------------
>
>                 Key: GERONIMO-4458
>                 URL: https://issues.apache.org/jira/browse/GERONIMO-4458
>             Project: Geronimo
>          Issue Type: Bug
>      Security Level: public(Regular issues) 
>    Affects Versions: 2.2
>            Reporter: Kevan Miller
>            Assignee: Kevan Miller
>            Priority: Critical
>             Fix For: 2.2
>
>
> G 2.2 TCK testing is running into a ClassLoader deadlock. Here are the stacktraces:
> {noformat}
> Found one Java-level deadlock:
> =============================
> "RMI TCP Connection(4)-9.42.75.229":
>  waiting to lock monitor 0x0849be70 (object 0xd57192c8, a org.apache.geronimo.kernel.config.MultiParentClassLoader),
>  which is held by "main"
> "main":
>  waiting to lock monitor 0x0849bed4 (object 0xd50ca400, a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader),
>  which is held by "RMI TCP Connection(4)-9.42.75.229"
> Java stack information for the threads listed above:
> ===================================================
> "RMI TCP Connection(4)-9.42.75.229":
>        at org.aspectj.weaver.tools.WeavingAdaptor$WeavingAdaptorMessageHolder.<init>(WeavingAdaptor.java:498)
>        at org.aspectj.weaver.tools.WeavingAdaptor.createMessageHandler(WeavingAdaptor.java:179)
>        at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.initialize(ClassLoaderWeavingAdaptor.java:111)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.initialize(Aj.java:151)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.getWeavingAdaptor(Aj.java:156)
>        at org.aspectj.weaver.loadtime.Aj$WeaverContainer.getWeaver(Aj.java:122)
>        at org.aspectj.weaver.loadtime.Aj.preProcess(Aj.java:73)
>        - locked <0xd4f23b40> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.aspectj.weaver.loadtime.ClassPreProcessorAgentAdapter.transform(ClassPreProcessorAgentAdapter.java:52)
>        at org.apache.geronimo.transformer.TransformerCollection.transform(TransformerCollection.java:43)
>        at sun.instrument.TransformerManager.transform(TransformerManager.java:169)
>        at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:365)
>        at java.lang.ClassLoader.defineClass1(Native Method)
>        at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
>        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
>        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
>        at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
>        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClassInternal(MultiParentClassLoader.java:455)
>        - locked <0xd4f23b40> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:69)
>        - locked <0xd4ea35c8> (a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd50ca440> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClassInternal(MultiParentClassLoader.java:441)
>        - locked <0xd50ca440> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:69)
>        - locked <0xd50ca400> (a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:392)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:255)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.Class.getDeclaredConstructors0(Native Method)
>        at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
>        at java.lang.Class.getConstructor0(Class.java:2699)
>        at java.lang.Class.newInstance0(Class.java:326)
>        at java.lang.Class.newInstance(Class.java:308)
>        at org.apache.geronimo.security.jaas.ClassOptionLoginModule.initialize(ClassOptionLoginModule.java:50)
>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at javax.security.auth.login.LoginContext.invoke(LoginContext.java:756)
>        at javax.security.auth.login.LoginContext.access$000(LoginContext.java:186)
>        at javax.security.auth.login.LoginContext$4.run(LoginContext.java:683)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:680)
>        at javax.security.auth.login.LoginContext.login(LoginContext.java:579)
>        at org.apache.geronimo.jmxremoting.Authenticator.authenticate(Authenticator.java:68)
>        at javax.management.remote.rmi.RMIServerImpl.doNewClient(RMIServerImpl.java:213)
>        at javax.management.remote.rmi.RMIServerImpl.newClient(RMIServerImpl.java:180)
>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:305)
>        at sun.rmi.transport.Transport$1.run(Transport.java:159)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at sun.rmi.transport.Transport.serviceCall(Transport.java:155)
>        at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)
>        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)
>        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)
>        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>        at java.lang.Thread.run(Thread.java:619)
> "main":
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:61)
>        - waiting to lock <0xd50ca400> (a
> org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd51edbf8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClassInternal(MultiParentClassLoader.java:441)
>        - locked <0xd51edbf8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:69)
>        - locked <0xd51eec50> (a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:392)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:255)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.aspectj.weaver.tools.WeavingAdaptor$WeavingAdaptorMessageHolder.<init>(WeavingAdaptor.java:498)
>        at org.aspectj.weaver.tools.WeavingAdaptor.createMessageHandler(WeavingAdaptor.java:179)
>        at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.initialize(ClassLoaderWeavingAdaptor.java:111)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.initialize(Aj.java:151)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.getWeavingAdaptor(Aj.java:156)
>        at org.aspectj.weaver.loadtime.Aj$WeaverContainer.getWeaver(Aj.java:122)
>        at org.aspectj.weaver.loadtime.Aj.preProcess(Aj.java:73)
>        - locked <0xd5712f78> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.aspectj.weaver.loadtime.ClassPreProcessorAgentAdapter.transform(ClassPreProcessorAgentAdapter.java:52)
>        at org.apache.geronimo.transformer.TransformerCollection.transform(TransformerCollection.java:43)
>        at sun.instrument.TransformerManager.transform(TransformerManager.java:169)
>        at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:365)
>        at java.lang.ClassLoader.defineClass1(Native Method)
>        at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
>        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
>        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
>        at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
>        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:407)
>        - locked <0xd5712f78> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:255)
>        - locked <0xd5712f78> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>        at org.apache.geronimo.gbean.runtime.GBeanInstance.<init>(GBeanInstance.java:228)
>        at org.apache.geronimo.kernel.basic.BasicKernel.loadGBean(BasicKernel.java:352)
>        at org.apache.geronimo.kernel.config.ConfigurationUtil.startConfigurationGBeans(ConfigurationUtil.java:441)
>        at org.apache.geronimo.kernel.config.KernelConfigurationManager.start(KernelConfigurationManager.java:190)
>        at org.apache.geronimo.kernel.config.SimpleConfigurationManager.startConfiguration(SimpleConfigurationManager.java:562)
>        - locked <0xd500a750> (a org.apache.geronimo.kernel.config.EditableKernelConfigurationManager)
>        at sun.reflect.GeneratedMethodAccessor22.invoke(Unknown Source)
>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at org.apache.geronimo.gbean.runtime.ReflectionMethodInvoker.invoke(ReflectionMethodInvoker.java:34)
>        at org.apache.geronimo.gbean.runtime.GBeanOperation.invoke(GBeanOperation.java:130)
>        at org.apache.geronimo.gbean.runtime.GBeanInstance.invoke(GBeanInstance.java:815)
>        at org.apache.geronimo.gbean.runtime.RawInvoker.invoke(RawInvoker.java:57)
>        at org.apache.geronimo.kernel.basic.RawOperationInvoker.invoke(RawOperationInvoker.java:35)
>        at org.apache.geronimo.kernel.basic.ProxyMethodInterceptor.intercept(ProxyMethodInterceptor.java:96)
>        at org.apache.geronimo.gbean.GBeanLifecycle$$EnhancerByCGLIB$$752a2ecb.startConfiguration(<generated>)
>        at org.apache.geronimo.system.main.EmbeddedDaemon.doStartup(EmbeddedDaemon.java:161)
>        at org.apache.geronimo.system.main.EmbeddedDaemon.execute(EmbeddedDaemon.java:78)
>        at org.apache.geronimo.kernel.util.MainConfigurationBootstrapper.main(MainConfigurationBootstrapper.java:45)
>        at org.apache.geronimo.cli.AbstractCLI.executeMain(AbstractCLI.java:65)
>        at org.apache.geronimo.cli.daemon.DaemonCLI.main(DaemonCLI.java:30)
> {noformat}

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[jira] Assigned: (GERONIMO-4458) Another ClassLoader deadlock during server startup

Posted by "Kevan Miller (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/GERONIMO-4458?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kevan Miller reassigned GERONIMO-4458:
--------------------------------------

    Assignee: Kevan Miller

> Another ClassLoader deadlock during server startup
> --------------------------------------------------
>
>                 Key: GERONIMO-4458
>                 URL: https://issues.apache.org/jira/browse/GERONIMO-4458
>             Project: Geronimo
>          Issue Type: Bug
>      Security Level: public(Regular issues) 
>    Affects Versions: 2.2
>            Reporter: Kevan Miller
>            Assignee: Kevan Miller
>            Priority: Critical
>             Fix For: 2.2
>
>
> G 2.2 TCK testing is running into a ClassLoader deadlock. Here are the stacktraces:
> {noformat}
> Found one Java-level deadlock:
> =============================
> "RMI TCP Connection(4)-9.42.75.229":
>  waiting to lock monitor 0x0849be70 (object 0xd57192c8, a org.apache.geronimo.kernel.config.MultiParentClassLoader),
>  which is held by "main"
> "main":
>  waiting to lock monitor 0x0849bed4 (object 0xd50ca400, a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader),
>  which is held by "RMI TCP Connection(4)-9.42.75.229"
> Java stack information for the threads listed above:
> ===================================================
> "RMI TCP Connection(4)-9.42.75.229":
>        at org.aspectj.weaver.tools.WeavingAdaptor$WeavingAdaptorMessageHolder.<init>(WeavingAdaptor.java:498)
>        at org.aspectj.weaver.tools.WeavingAdaptor.createMessageHandler(WeavingAdaptor.java:179)
>        at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.initialize(ClassLoaderWeavingAdaptor.java:111)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.initialize(Aj.java:151)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.getWeavingAdaptor(Aj.java:156)
>        at org.aspectj.weaver.loadtime.Aj$WeaverContainer.getWeaver(Aj.java:122)
>        at org.aspectj.weaver.loadtime.Aj.preProcess(Aj.java:73)
>        - locked <0xd4f23b40> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.aspectj.weaver.loadtime.ClassPreProcessorAgentAdapter.transform(ClassPreProcessorAgentAdapter.java:52)
>        at org.apache.geronimo.transformer.TransformerCollection.transform(TransformerCollection.java:43)
>        at sun.instrument.TransformerManager.transform(TransformerManager.java:169)
>        at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:365)
>        at java.lang.ClassLoader.defineClass1(Native Method)
>        at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
>        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
>        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
>        at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
>        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClassInternal(MultiParentClassLoader.java:455)
>        - locked <0xd4f23b40> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:69)
>        - locked <0xd4ea35c8> (a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd50ca440> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClassInternal(MultiParentClassLoader.java:441)
>        - locked <0xd50ca440> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:69)
>        - locked <0xd50ca400> (a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:392)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:255)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.Class.getDeclaredConstructors0(Native Method)
>        at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
>        at java.lang.Class.getConstructor0(Class.java:2699)
>        at java.lang.Class.newInstance0(Class.java:326)
>        at java.lang.Class.newInstance(Class.java:308)
>        at org.apache.geronimo.security.jaas.ClassOptionLoginModule.initialize(ClassOptionLoginModule.java:50)
>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at javax.security.auth.login.LoginContext.invoke(LoginContext.java:756)
>        at javax.security.auth.login.LoginContext.access$000(LoginContext.java:186)
>        at javax.security.auth.login.LoginContext$4.run(LoginContext.java:683)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:680)
>        at javax.security.auth.login.LoginContext.login(LoginContext.java:579)
>        at org.apache.geronimo.jmxremoting.Authenticator.authenticate(Authenticator.java:68)
>        at javax.management.remote.rmi.RMIServerImpl.doNewClient(RMIServerImpl.java:213)
>        at javax.management.remote.rmi.RMIServerImpl.newClient(RMIServerImpl.java:180)
>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:305)
>        at sun.rmi.transport.Transport$1.run(Transport.java:159)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at sun.rmi.transport.Transport.serviceCall(Transport.java:155)
>        at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)
>        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)
>        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)
>        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>        at java.lang.Thread.run(Thread.java:619)
> "main":
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:61)
>        - waiting to lock <0xd50ca400> (a
> org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd51edbf8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClassInternal(MultiParentClassLoader.java:441)
>        - locked <0xd51edbf8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:69)
>        - locked <0xd51eec50> (a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:392)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:255)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.aspectj.weaver.tools.WeavingAdaptor$WeavingAdaptorMessageHolder.<init>(WeavingAdaptor.java:498)
>        at org.aspectj.weaver.tools.WeavingAdaptor.createMessageHandler(WeavingAdaptor.java:179)
>        at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.initialize(ClassLoaderWeavingAdaptor.java:111)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.initialize(Aj.java:151)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.getWeavingAdaptor(Aj.java:156)
>        at org.aspectj.weaver.loadtime.Aj$WeaverContainer.getWeaver(Aj.java:122)
>        at org.aspectj.weaver.loadtime.Aj.preProcess(Aj.java:73)
>        - locked <0xd5712f78> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.aspectj.weaver.loadtime.ClassPreProcessorAgentAdapter.transform(ClassPreProcessorAgentAdapter.java:52)
>        at org.apache.geronimo.transformer.TransformerCollection.transform(TransformerCollection.java:43)
>        at sun.instrument.TransformerManager.transform(TransformerManager.java:169)
>        at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:365)
>        at java.lang.ClassLoader.defineClass1(Native Method)
>        at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
>        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
>        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
>        at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
>        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:407)
>        - locked <0xd5712f78> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:255)
>        - locked <0xd5712f78> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>        at org.apache.geronimo.gbean.runtime.GBeanInstance.<init>(GBeanInstance.java:228)
>        at org.apache.geronimo.kernel.basic.BasicKernel.loadGBean(BasicKernel.java:352)
>        at org.apache.geronimo.kernel.config.ConfigurationUtil.startConfigurationGBeans(ConfigurationUtil.java:441)
>        at org.apache.geronimo.kernel.config.KernelConfigurationManager.start(KernelConfigurationManager.java:190)
>        at org.apache.geronimo.kernel.config.SimpleConfigurationManager.startConfiguration(SimpleConfigurationManager.java:562)
>        - locked <0xd500a750> (a org.apache.geronimo.kernel.config.EditableKernelConfigurationManager)
>        at sun.reflect.GeneratedMethodAccessor22.invoke(Unknown Source)
>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at org.apache.geronimo.gbean.runtime.ReflectionMethodInvoker.invoke(ReflectionMethodInvoker.java:34)
>        at org.apache.geronimo.gbean.runtime.GBeanOperation.invoke(GBeanOperation.java:130)
>        at org.apache.geronimo.gbean.runtime.GBeanInstance.invoke(GBeanInstance.java:815)
>        at org.apache.geronimo.gbean.runtime.RawInvoker.invoke(RawInvoker.java:57)
>        at org.apache.geronimo.kernel.basic.RawOperationInvoker.invoke(RawOperationInvoker.java:35)
>        at org.apache.geronimo.kernel.basic.ProxyMethodInterceptor.intercept(ProxyMethodInterceptor.java:96)
>        at org.apache.geronimo.gbean.GBeanLifecycle$$EnhancerByCGLIB$$752a2ecb.startConfiguration(<generated>)
>        at org.apache.geronimo.system.main.EmbeddedDaemon.doStartup(EmbeddedDaemon.java:161)
>        at org.apache.geronimo.system.main.EmbeddedDaemon.execute(EmbeddedDaemon.java:78)
>        at org.apache.geronimo.kernel.util.MainConfigurationBootstrapper.main(MainConfigurationBootstrapper.java:45)
>        at org.apache.geronimo.cli.AbstractCLI.executeMain(AbstractCLI.java:65)
>        at org.apache.geronimo.cli.daemon.DaemonCLI.main(DaemonCLI.java:30)
> {noformat}

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[jira] Commented: (GERONIMO-4458) Another ClassLoader deadlock during server startup

Posted by "Kevan Miller (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/GERONIMO-4458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12655293#action_12655293 ] 

Kevan Miller commented on GERONIMO-4458:
----------------------------------------

So, looks like to me that our use of AspectJ is introducing cycles in ClassLoading -- creating the potential for this type of deadlock...

Will need to try and workout what ClassLoaders the AspectJ weaving is going to invoke. Don't know how we're going to fix, yet. 

> Another ClassLoader deadlock during server startup
> --------------------------------------------------
>
>                 Key: GERONIMO-4458
>                 URL: https://issues.apache.org/jira/browse/GERONIMO-4458
>             Project: Geronimo
>          Issue Type: Bug
>      Security Level: public(Regular issues) 
>    Affects Versions: 2.2
>            Reporter: Kevan Miller
>            Priority: Critical
>             Fix For: 2.2
>
>
> G 2.2 TCK testing is running into a ClassLoader deadlock. Here are the stacktraces:
> {noformat}
> Found one Java-level deadlock:
> =============================
> "RMI TCP Connection(4)-9.42.75.229":
>  waiting to lock monitor 0x0849be70 (object 0xd57192c8, a org.apache.geronimo.kernel.config.MultiParentClassLoader),
>  which is held by "main"
> "main":
>  waiting to lock monitor 0x0849bed4 (object 0xd50ca400, a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader),
>  which is held by "RMI TCP Connection(4)-9.42.75.229"
> Java stack information for the threads listed above:
> ===================================================
> "RMI TCP Connection(4)-9.42.75.229":
>        at org.aspectj.weaver.tools.WeavingAdaptor$WeavingAdaptorMessageHolder.<init>(WeavingAdaptor.java:498)
>        at org.aspectj.weaver.tools.WeavingAdaptor.createMessageHandler(WeavingAdaptor.java:179)
>        at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.initialize(ClassLoaderWeavingAdaptor.java:111)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.initialize(Aj.java:151)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.getWeavingAdaptor(Aj.java:156)
>        at org.aspectj.weaver.loadtime.Aj$WeaverContainer.getWeaver(Aj.java:122)
>        at org.aspectj.weaver.loadtime.Aj.preProcess(Aj.java:73)
>        - locked <0xd4f23b40> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.aspectj.weaver.loadtime.ClassPreProcessorAgentAdapter.transform(ClassPreProcessorAgentAdapter.java:52)
>        at org.apache.geronimo.transformer.TransformerCollection.transform(TransformerCollection.java:43)
>        at sun.instrument.TransformerManager.transform(TransformerManager.java:169)
>        at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:365)
>        at java.lang.ClassLoader.defineClass1(Native Method)
>        at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
>        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
>        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
>        at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
>        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClassInternal(MultiParentClassLoader.java:455)
>        - locked <0xd4f23b40> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:69)
>        - locked <0xd4ea35c8> (a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd50ca440> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClassInternal(MultiParentClassLoader.java:441)
>        - locked <0xd50ca440> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:69)
>        - locked <0xd50ca400> (a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:392)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:255)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.Class.getDeclaredConstructors0(Native Method)
>        at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
>        at java.lang.Class.getConstructor0(Class.java:2699)
>        at java.lang.Class.newInstance0(Class.java:326)
>        at java.lang.Class.newInstance(Class.java:308)
>        at org.apache.geronimo.security.jaas.ClassOptionLoginModule.initialize(ClassOptionLoginModule.java:50)
>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at javax.security.auth.login.LoginContext.invoke(LoginContext.java:756)
>        at javax.security.auth.login.LoginContext.access$000(LoginContext.java:186)
>        at javax.security.auth.login.LoginContext$4.run(LoginContext.java:683)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:680)
>        at javax.security.auth.login.LoginContext.login(LoginContext.java:579)
>        at org.apache.geronimo.jmxremoting.Authenticator.authenticate(Authenticator.java:68)
>        at javax.management.remote.rmi.RMIServerImpl.doNewClient(RMIServerImpl.java:213)
>        at javax.management.remote.rmi.RMIServerImpl.newClient(RMIServerImpl.java:180)
>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:305)
>        at sun.rmi.transport.Transport$1.run(Transport.java:159)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at sun.rmi.transport.Transport.serviceCall(Transport.java:155)
>        at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)
>        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)
>        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)
>        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>        at java.lang.Thread.run(Thread.java:619)
> "main":
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:61)
>        - waiting to lock <0xd50ca400> (a
> org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd51edbf8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClassInternal(MultiParentClassLoader.java:441)
>        - locked <0xd51edbf8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:69)
>        - locked <0xd51eec50> (a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:392)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:255)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.aspectj.weaver.tools.WeavingAdaptor$WeavingAdaptorMessageHolder.<init>(WeavingAdaptor.java:498)
>        at org.aspectj.weaver.tools.WeavingAdaptor.createMessageHandler(WeavingAdaptor.java:179)
>        at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.initialize(ClassLoaderWeavingAdaptor.java:111)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.initialize(Aj.java:151)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.getWeavingAdaptor(Aj.java:156)
>        at org.aspectj.weaver.loadtime.Aj$WeaverContainer.getWeaver(Aj.java:122)
>        at org.aspectj.weaver.loadtime.Aj.preProcess(Aj.java:73)
>        - locked <0xd5712f78> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.aspectj.weaver.loadtime.ClassPreProcessorAgentAdapter.transform(ClassPreProcessorAgentAdapter.java:52)
>        at org.apache.geronimo.transformer.TransformerCollection.transform(TransformerCollection.java:43)
>        at sun.instrument.TransformerManager.transform(TransformerManager.java:169)
>        at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:365)
>        at java.lang.ClassLoader.defineClass1(Native Method)
>        at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
>        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
>        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
>        at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
>        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:407)
>        - locked <0xd5712f78> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:255)
>        - locked <0xd5712f78> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>        at org.apache.geronimo.gbean.runtime.GBeanInstance.<init>(GBeanInstance.java:228)
>        at org.apache.geronimo.kernel.basic.BasicKernel.loadGBean(BasicKernel.java:352)
>        at org.apache.geronimo.kernel.config.ConfigurationUtil.startConfigurationGBeans(ConfigurationUtil.java:441)
>        at org.apache.geronimo.kernel.config.KernelConfigurationManager.start(KernelConfigurationManager.java:190)
>        at org.apache.geronimo.kernel.config.SimpleConfigurationManager.startConfiguration(SimpleConfigurationManager.java:562)
>        - locked <0xd500a750> (a org.apache.geronimo.kernel.config.EditableKernelConfigurationManager)
>        at sun.reflect.GeneratedMethodAccessor22.invoke(Unknown Source)
>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at org.apache.geronimo.gbean.runtime.ReflectionMethodInvoker.invoke(ReflectionMethodInvoker.java:34)
>        at org.apache.geronimo.gbean.runtime.GBeanOperation.invoke(GBeanOperation.java:130)
>        at org.apache.geronimo.gbean.runtime.GBeanInstance.invoke(GBeanInstance.java:815)
>        at org.apache.geronimo.gbean.runtime.RawInvoker.invoke(RawInvoker.java:57)
>        at org.apache.geronimo.kernel.basic.RawOperationInvoker.invoke(RawOperationInvoker.java:35)
>        at org.apache.geronimo.kernel.basic.ProxyMethodInterceptor.intercept(ProxyMethodInterceptor.java:96)
>        at org.apache.geronimo.gbean.GBeanLifecycle$$EnhancerByCGLIB$$752a2ecb.startConfiguration(<generated>)
>        at org.apache.geronimo.system.main.EmbeddedDaemon.doStartup(EmbeddedDaemon.java:161)
>        at org.apache.geronimo.system.main.EmbeddedDaemon.execute(EmbeddedDaemon.java:78)
>        at org.apache.geronimo.kernel.util.MainConfigurationBootstrapper.main(MainConfigurationBootstrapper.java:45)
>        at org.apache.geronimo.cli.AbstractCLI.executeMain(AbstractCLI.java:65)
>        at org.apache.geronimo.cli.daemon.DaemonCLI.main(DaemonCLI.java:30)
> {noformat}

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[jira] Closed: (GERONIMO-4458) Another ClassLoader deadlock during server startup

Posted by "Kevan Miller (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/GERONIMO-4458?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kevan Miller closed GERONIMO-4458.
----------------------------------

    Resolution: Fixed

Closing. Problem has been fixed.

> Another ClassLoader deadlock during server startup
> --------------------------------------------------
>
>                 Key: GERONIMO-4458
>                 URL: https://issues.apache.org/jira/browse/GERONIMO-4458
>             Project: Geronimo
>          Issue Type: Bug
>      Security Level: public(Regular issues) 
>    Affects Versions: 2.2
>            Reporter: Kevan Miller
>            Assignee: Kevan Miller
>            Priority: Critical
>             Fix For: 2.2
>
>
> G 2.2 TCK testing is running into a ClassLoader deadlock. Here are the stacktraces:
> {noformat}
> Found one Java-level deadlock:
> =============================
> "RMI TCP Connection(4)-9.42.75.229":
>  waiting to lock monitor 0x0849be70 (object 0xd57192c8, a org.apache.geronimo.kernel.config.MultiParentClassLoader),
>  which is held by "main"
> "main":
>  waiting to lock monitor 0x0849bed4 (object 0xd50ca400, a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader),
>  which is held by "RMI TCP Connection(4)-9.42.75.229"
> Java stack information for the threads listed above:
> ===================================================
> "RMI TCP Connection(4)-9.42.75.229":
>        at org.aspectj.weaver.tools.WeavingAdaptor$WeavingAdaptorMessageHolder.<init>(WeavingAdaptor.java:498)
>        at org.aspectj.weaver.tools.WeavingAdaptor.createMessageHandler(WeavingAdaptor.java:179)
>        at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.initialize(ClassLoaderWeavingAdaptor.java:111)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.initialize(Aj.java:151)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.getWeavingAdaptor(Aj.java:156)
>        at org.aspectj.weaver.loadtime.Aj$WeaverContainer.getWeaver(Aj.java:122)
>        at org.aspectj.weaver.loadtime.Aj.preProcess(Aj.java:73)
>        - locked <0xd4f23b40> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.aspectj.weaver.loadtime.ClassPreProcessorAgentAdapter.transform(ClassPreProcessorAgentAdapter.java:52)
>        at org.apache.geronimo.transformer.TransformerCollection.transform(TransformerCollection.java:43)
>        at sun.instrument.TransformerManager.transform(TransformerManager.java:169)
>        at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:365)
>        at java.lang.ClassLoader.defineClass1(Native Method)
>        at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
>        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
>        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
>        at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
>        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClassInternal(MultiParentClassLoader.java:455)
>        - locked <0xd4f23b40> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:69)
>        - locked <0xd4ea35c8> (a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd50ca440> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClassInternal(MultiParentClassLoader.java:441)
>        - locked <0xd50ca440> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:69)
>        - locked <0xd50ca400> (a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:392)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:255)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.Class.getDeclaredConstructors0(Native Method)
>        at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
>        at java.lang.Class.getConstructor0(Class.java:2699)
>        at java.lang.Class.newInstance0(Class.java:326)
>        at java.lang.Class.newInstance(Class.java:308)
>        at org.apache.geronimo.security.jaas.ClassOptionLoginModule.initialize(ClassOptionLoginModule.java:50)
>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at javax.security.auth.login.LoginContext.invoke(LoginContext.java:756)
>        at javax.security.auth.login.LoginContext.access$000(LoginContext.java:186)
>        at javax.security.auth.login.LoginContext$4.run(LoginContext.java:683)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:680)
>        at javax.security.auth.login.LoginContext.login(LoginContext.java:579)
>        at org.apache.geronimo.jmxremoting.Authenticator.authenticate(Authenticator.java:68)
>        at javax.management.remote.rmi.RMIServerImpl.doNewClient(RMIServerImpl.java:213)
>        at javax.management.remote.rmi.RMIServerImpl.newClient(RMIServerImpl.java:180)
>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:305)
>        at sun.rmi.transport.Transport$1.run(Transport.java:159)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at sun.rmi.transport.Transport.serviceCall(Transport.java:155)
>        at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)
>        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)
>        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)
>        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>        at java.lang.Thread.run(Thread.java:619)
> "main":
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:61)
>        - waiting to lock <0xd50ca400> (a
> org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd51edbf8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClassInternal(MultiParentClassLoader.java:441)
>        - locked <0xd51edbf8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:69)
>        - locked <0xd51eec50> (a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:392)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:255)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.aspectj.weaver.tools.WeavingAdaptor$WeavingAdaptorMessageHolder.<init>(WeavingAdaptor.java:498)
>        at org.aspectj.weaver.tools.WeavingAdaptor.createMessageHandler(WeavingAdaptor.java:179)
>        at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.initialize(ClassLoaderWeavingAdaptor.java:111)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.initialize(Aj.java:151)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.getWeavingAdaptor(Aj.java:156)
>        at org.aspectj.weaver.loadtime.Aj$WeaverContainer.getWeaver(Aj.java:122)
>        at org.aspectj.weaver.loadtime.Aj.preProcess(Aj.java:73)
>        - locked <0xd5712f78> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.aspectj.weaver.loadtime.ClassPreProcessorAgentAdapter.transform(ClassPreProcessorAgentAdapter.java:52)
>        at org.apache.geronimo.transformer.TransformerCollection.transform(TransformerCollection.java:43)
>        at sun.instrument.TransformerManager.transform(TransformerManager.java:169)
>        at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:365)
>        at java.lang.ClassLoader.defineClass1(Native Method)
>        at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
>        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
>        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
>        at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
>        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:407)
>        - locked <0xd5712f78> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:255)
>        - locked <0xd5712f78> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>        at org.apache.geronimo.gbean.runtime.GBeanInstance.<init>(GBeanInstance.java:228)
>        at org.apache.geronimo.kernel.basic.BasicKernel.loadGBean(BasicKernel.java:352)
>        at org.apache.geronimo.kernel.config.ConfigurationUtil.startConfigurationGBeans(ConfigurationUtil.java:441)
>        at org.apache.geronimo.kernel.config.KernelConfigurationManager.start(KernelConfigurationManager.java:190)
>        at org.apache.geronimo.kernel.config.SimpleConfigurationManager.startConfiguration(SimpleConfigurationManager.java:562)
>        - locked <0xd500a750> (a org.apache.geronimo.kernel.config.EditableKernelConfigurationManager)
>        at sun.reflect.GeneratedMethodAccessor22.invoke(Unknown Source)
>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at org.apache.geronimo.gbean.runtime.ReflectionMethodInvoker.invoke(ReflectionMethodInvoker.java:34)
>        at org.apache.geronimo.gbean.runtime.GBeanOperation.invoke(GBeanOperation.java:130)
>        at org.apache.geronimo.gbean.runtime.GBeanInstance.invoke(GBeanInstance.java:815)
>        at org.apache.geronimo.gbean.runtime.RawInvoker.invoke(RawInvoker.java:57)
>        at org.apache.geronimo.kernel.basic.RawOperationInvoker.invoke(RawOperationInvoker.java:35)
>        at org.apache.geronimo.kernel.basic.ProxyMethodInterceptor.intercept(ProxyMethodInterceptor.java:96)
>        at org.apache.geronimo.gbean.GBeanLifecycle$$EnhancerByCGLIB$$752a2ecb.startConfiguration(<generated>)
>        at org.apache.geronimo.system.main.EmbeddedDaemon.doStartup(EmbeddedDaemon.java:161)
>        at org.apache.geronimo.system.main.EmbeddedDaemon.execute(EmbeddedDaemon.java:78)
>        at org.apache.geronimo.kernel.util.MainConfigurationBootstrapper.main(MainConfigurationBootstrapper.java:45)
>        at org.apache.geronimo.cli.AbstractCLI.executeMain(AbstractCLI.java:65)
>        at org.apache.geronimo.cli.daemon.DaemonCLI.main(DaemonCLI.java:30)
> {noformat}

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[jira] Commented: (GERONIMO-4458) Another ClassLoader deadlock during server startup

Posted by "David Jencks (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/GERONIMO-4458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12656168#action_12656168 ] 

David Jencks commented on GERONIMO-4458:
----------------------------------------

I talked with Kevan on irc for a bit.

I don't think the context classloader enters into the question at all.

I think the problem is caused directly by trying to enhance a class in a parent classloader of the enhancer.

Putting all the enhancers in the primordial classloader will obviously fix this problem but maybe this is more than is needed.  In our system, enhancers are installed at arbitrary times in the server.  They can't expect to be able to enhance classes in their parent classloaders because those classes might have already been loaded.

Therefore we ought to be able to solve the problem by wrapping enhancers in something that checks that the classloader supplied to transform is not a parent of the enhancer's classloader.

something like

public class ClassFileTransformerWrapper implements ClassFileTransformer  {

private final ClassFIleTransformer delegate;
private final IdentityHashSet parents;

//constructor
    
    public byte[] transform(java.lang.ClassLoader classLoader, java.lang.String s, java.lang.Class<?> aClass, java.security.ProtectionDomain protectionDomain, byte[] bytes) throws java.lang.instrument.IllegalClassFormatException {

         if (parents.contans(classLoader) return null;
         return delegate.transform(classLoader, s, aClasss, protectionDoemain, bytes);
    }
}



> Another ClassLoader deadlock during server startup
> --------------------------------------------------
>
>                 Key: GERONIMO-4458
>                 URL: https://issues.apache.org/jira/browse/GERONIMO-4458
>             Project: Geronimo
>          Issue Type: Bug
>      Security Level: public(Regular issues) 
>    Affects Versions: 2.2
>            Reporter: Kevan Miller
>            Priority: Critical
>             Fix For: 2.2
>
>
> G 2.2 TCK testing is running into a ClassLoader deadlock. Here are the stacktraces:
> {noformat}
> Found one Java-level deadlock:
> =============================
> "RMI TCP Connection(4)-9.42.75.229":
>  waiting to lock monitor 0x0849be70 (object 0xd57192c8, a org.apache.geronimo.kernel.config.MultiParentClassLoader),
>  which is held by "main"
> "main":
>  waiting to lock monitor 0x0849bed4 (object 0xd50ca400, a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader),
>  which is held by "RMI TCP Connection(4)-9.42.75.229"
> Java stack information for the threads listed above:
> ===================================================
> "RMI TCP Connection(4)-9.42.75.229":
>        at org.aspectj.weaver.tools.WeavingAdaptor$WeavingAdaptorMessageHolder.<init>(WeavingAdaptor.java:498)
>        at org.aspectj.weaver.tools.WeavingAdaptor.createMessageHandler(WeavingAdaptor.java:179)
>        at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.initialize(ClassLoaderWeavingAdaptor.java:111)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.initialize(Aj.java:151)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.getWeavingAdaptor(Aj.java:156)
>        at org.aspectj.weaver.loadtime.Aj$WeaverContainer.getWeaver(Aj.java:122)
>        at org.aspectj.weaver.loadtime.Aj.preProcess(Aj.java:73)
>        - locked <0xd4f23b40> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.aspectj.weaver.loadtime.ClassPreProcessorAgentAdapter.transform(ClassPreProcessorAgentAdapter.java:52)
>        at org.apache.geronimo.transformer.TransformerCollection.transform(TransformerCollection.java:43)
>        at sun.instrument.TransformerManager.transform(TransformerManager.java:169)
>        at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:365)
>        at java.lang.ClassLoader.defineClass1(Native Method)
>        at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
>        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
>        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
>        at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
>        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClassInternal(MultiParentClassLoader.java:455)
>        - locked <0xd4f23b40> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:69)
>        - locked <0xd4ea35c8> (a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd50ca440> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClassInternal(MultiParentClassLoader.java:441)
>        - locked <0xd50ca440> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:69)
>        - locked <0xd50ca400> (a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:392)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:255)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.Class.getDeclaredConstructors0(Native Method)
>        at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
>        at java.lang.Class.getConstructor0(Class.java:2699)
>        at java.lang.Class.newInstance0(Class.java:326)
>        at java.lang.Class.newInstance(Class.java:308)
>        at org.apache.geronimo.security.jaas.ClassOptionLoginModule.initialize(ClassOptionLoginModule.java:50)
>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at javax.security.auth.login.LoginContext.invoke(LoginContext.java:756)
>        at javax.security.auth.login.LoginContext.access$000(LoginContext.java:186)
>        at javax.security.auth.login.LoginContext$4.run(LoginContext.java:683)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:680)
>        at javax.security.auth.login.LoginContext.login(LoginContext.java:579)
>        at org.apache.geronimo.jmxremoting.Authenticator.authenticate(Authenticator.java:68)
>        at javax.management.remote.rmi.RMIServerImpl.doNewClient(RMIServerImpl.java:213)
>        at javax.management.remote.rmi.RMIServerImpl.newClient(RMIServerImpl.java:180)
>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:305)
>        at sun.rmi.transport.Transport$1.run(Transport.java:159)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at sun.rmi.transport.Transport.serviceCall(Transport.java:155)
>        at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)
>        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)
>        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)
>        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>        at java.lang.Thread.run(Thread.java:619)
> "main":
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:61)
>        - waiting to lock <0xd50ca400> (a
> org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd51edbf8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClassInternal(MultiParentClassLoader.java:441)
>        - locked <0xd51edbf8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:69)
>        - locked <0xd51eec50> (a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:392)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:255)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.aspectj.weaver.tools.WeavingAdaptor$WeavingAdaptorMessageHolder.<init>(WeavingAdaptor.java:498)
>        at org.aspectj.weaver.tools.WeavingAdaptor.createMessageHandler(WeavingAdaptor.java:179)
>        at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.initialize(ClassLoaderWeavingAdaptor.java:111)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.initialize(Aj.java:151)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.getWeavingAdaptor(Aj.java:156)
>        at org.aspectj.weaver.loadtime.Aj$WeaverContainer.getWeaver(Aj.java:122)
>        at org.aspectj.weaver.loadtime.Aj.preProcess(Aj.java:73)
>        - locked <0xd5712f78> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.aspectj.weaver.loadtime.ClassPreProcessorAgentAdapter.transform(ClassPreProcessorAgentAdapter.java:52)
>        at org.apache.geronimo.transformer.TransformerCollection.transform(TransformerCollection.java:43)
>        at sun.instrument.TransformerManager.transform(TransformerManager.java:169)
>        at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:365)
>        at java.lang.ClassLoader.defineClass1(Native Method)
>        at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
>        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
>        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
>        at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
>        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:407)
>        - locked <0xd5712f78> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:255)
>        - locked <0xd5712f78> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>        at org.apache.geronimo.gbean.runtime.GBeanInstance.<init>(GBeanInstance.java:228)
>        at org.apache.geronimo.kernel.basic.BasicKernel.loadGBean(BasicKernel.java:352)
>        at org.apache.geronimo.kernel.config.ConfigurationUtil.startConfigurationGBeans(ConfigurationUtil.java:441)
>        at org.apache.geronimo.kernel.config.KernelConfigurationManager.start(KernelConfigurationManager.java:190)
>        at org.apache.geronimo.kernel.config.SimpleConfigurationManager.startConfiguration(SimpleConfigurationManager.java:562)
>        - locked <0xd500a750> (a org.apache.geronimo.kernel.config.EditableKernelConfigurationManager)
>        at sun.reflect.GeneratedMethodAccessor22.invoke(Unknown Source)
>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at org.apache.geronimo.gbean.runtime.ReflectionMethodInvoker.invoke(ReflectionMethodInvoker.java:34)
>        at org.apache.geronimo.gbean.runtime.GBeanOperation.invoke(GBeanOperation.java:130)
>        at org.apache.geronimo.gbean.runtime.GBeanInstance.invoke(GBeanInstance.java:815)
>        at org.apache.geronimo.gbean.runtime.RawInvoker.invoke(RawInvoker.java:57)
>        at org.apache.geronimo.kernel.basic.RawOperationInvoker.invoke(RawOperationInvoker.java:35)
>        at org.apache.geronimo.kernel.basic.ProxyMethodInterceptor.intercept(ProxyMethodInterceptor.java:96)
>        at org.apache.geronimo.gbean.GBeanLifecycle$$EnhancerByCGLIB$$752a2ecb.startConfiguration(<generated>)
>        at org.apache.geronimo.system.main.EmbeddedDaemon.doStartup(EmbeddedDaemon.java:161)
>        at org.apache.geronimo.system.main.EmbeddedDaemon.execute(EmbeddedDaemon.java:78)
>        at org.apache.geronimo.kernel.util.MainConfigurationBootstrapper.main(MainConfigurationBootstrapper.java:45)
>        at org.apache.geronimo.cli.AbstractCLI.executeMain(AbstractCLI.java:65)
>        at org.apache.geronimo.cli.daemon.DaemonCLI.main(DaemonCLI.java:30)
> {noformat}

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[jira] Commented: (GERONIMO-4458) Another ClassLoader deadlock during server startup

Posted by "Kevan Miller (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/GERONIMO-4458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12656075#action_12656075 ] 

Kevan Miller commented on GERONIMO-4458:
----------------------------------------

I understand the basic issue:

At present, ClassFileTransformer's can introduce cycles in our ClassLoader structure.

Imagine a ClassLoader A whose parents are ClassLoaders B and C. B's parent is C.

{noformat}

           C
         /    \
        B    |
           \  |
             A          
{noformat}

On Thread 1 (whose ContextClassLoader is A), we're trying to load a class Z1 and hold monitors on A and C.
On Thread 2 (whose ContextClassLoader is B), we're trying to load a class Z2 and hold a monitor on B and are waiting for a monitor on C.

On Thread1, we are loading class Z1 from ClassLoader C. This will trigger ClassFileTransformer processing for Z1. If this processing requires any Classes to be loaded, we're going to start loading classes using the Thread ContextClassLoader (i.e. A). Since B is a parent of A, we may search ClassLoader B (making B a logical parent of C). So, we have an indirect cycle in our ClassLoader hierarchy.

I think we need to:

1. Set the Thread ContextClassLoader from oag.transform.TransformerCollection.transform() before invoking registered ClassFileTransformers.
2. Move all ClassFileTransformer jars into the primordial ClassLoader. 

I've hacked together a server that does the above (hacks were to the server.jar manifest -- i.e. not integrated into a build, yet).

I'm running tests with the above (repeated server starts/stops) and have yet to encounter a problem. Assuming tests continue to run well, I'll intend on making the above changes.

Comments welcome...

> Another ClassLoader deadlock during server startup
> --------------------------------------------------
>
>                 Key: GERONIMO-4458
>                 URL: https://issues.apache.org/jira/browse/GERONIMO-4458
>             Project: Geronimo
>          Issue Type: Bug
>      Security Level: public(Regular issues) 
>    Affects Versions: 2.2
>            Reporter: Kevan Miller
>            Priority: Critical
>             Fix For: 2.2
>
>
> G 2.2 TCK testing is running into a ClassLoader deadlock. Here are the stacktraces:
> {noformat}
> Found one Java-level deadlock:
> =============================
> "RMI TCP Connection(4)-9.42.75.229":
>  waiting to lock monitor 0x0849be70 (object 0xd57192c8, a org.apache.geronimo.kernel.config.MultiParentClassLoader),
>  which is held by "main"
> "main":
>  waiting to lock monitor 0x0849bed4 (object 0xd50ca400, a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader),
>  which is held by "RMI TCP Connection(4)-9.42.75.229"
> Java stack information for the threads listed above:
> ===================================================
> "RMI TCP Connection(4)-9.42.75.229":
>        at org.aspectj.weaver.tools.WeavingAdaptor$WeavingAdaptorMessageHolder.<init>(WeavingAdaptor.java:498)
>        at org.aspectj.weaver.tools.WeavingAdaptor.createMessageHandler(WeavingAdaptor.java:179)
>        at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.initialize(ClassLoaderWeavingAdaptor.java:111)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.initialize(Aj.java:151)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.getWeavingAdaptor(Aj.java:156)
>        at org.aspectj.weaver.loadtime.Aj$WeaverContainer.getWeaver(Aj.java:122)
>        at org.aspectj.weaver.loadtime.Aj.preProcess(Aj.java:73)
>        - locked <0xd4f23b40> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.aspectj.weaver.loadtime.ClassPreProcessorAgentAdapter.transform(ClassPreProcessorAgentAdapter.java:52)
>        at org.apache.geronimo.transformer.TransformerCollection.transform(TransformerCollection.java:43)
>        at sun.instrument.TransformerManager.transform(TransformerManager.java:169)
>        at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:365)
>        at java.lang.ClassLoader.defineClass1(Native Method)
>        at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
>        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
>        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
>        at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
>        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClassInternal(MultiParentClassLoader.java:455)
>        - locked <0xd4f23b40> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:69)
>        - locked <0xd4ea35c8> (a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd50ca440> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClassInternal(MultiParentClassLoader.java:441)
>        - locked <0xd50ca440> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:69)
>        - locked <0xd50ca400> (a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:392)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:255)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
>        - locked <0xd51f63e8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.Class.getDeclaredConstructors0(Native Method)
>        at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
>        at java.lang.Class.getConstructor0(Class.java:2699)
>        at java.lang.Class.newInstance0(Class.java:326)
>        at java.lang.Class.newInstance(Class.java:308)
>        at org.apache.geronimo.security.jaas.ClassOptionLoginModule.initialize(ClassOptionLoginModule.java:50)
>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at javax.security.auth.login.LoginContext.invoke(LoginContext.java:756)
>        at javax.security.auth.login.LoginContext.access$000(LoginContext.java:186)
>        at javax.security.auth.login.LoginContext$4.run(LoginContext.java:683)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:680)
>        at javax.security.auth.login.LoginContext.login(LoginContext.java:579)
>        at org.apache.geronimo.jmxremoting.Authenticator.authenticate(Authenticator.java:68)
>        at javax.management.remote.rmi.RMIServerImpl.doNewClient(RMIServerImpl.java:213)
>        at javax.management.remote.rmi.RMIServerImpl.newClient(RMIServerImpl.java:180)
>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:305)
>        at sun.rmi.transport.Transport$1.run(Transport.java:159)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at sun.rmi.transport.Transport.serviceCall(Transport.java:155)
>        at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)
>        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)
>        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)
>        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>        at java.lang.Thread.run(Thread.java:619)
> "main":
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:61)
>        - waiting to lock <0xd50ca400> (a
> org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd51edbf8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClassInternal(MultiParentClassLoader.java:441)
>        - locked <0xd51edbf8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:69)
>        - locked <0xd51eec50> (a org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader)
>        at org.apache.geronimo.kernel.config.ChildrenConfigurationClassLoader.loadClass(ChildrenConfigurationClassLoader.java:52)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.checkParents(MultiParentClassLoader.java:483)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:392)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:255)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
>        - locked <0xd57192c8> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.aspectj.weaver.tools.WeavingAdaptor$WeavingAdaptorMessageHolder.<init>(WeavingAdaptor.java:498)
>        at org.aspectj.weaver.tools.WeavingAdaptor.createMessageHandler(WeavingAdaptor.java:179)
>        at org.aspectj.weaver.loadtime.ClassLoaderWeavingAdaptor.initialize(ClassLoaderWeavingAdaptor.java:111)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.initialize(Aj.java:151)
>        at org.aspectj.weaver.loadtime.Aj$ExplicitlyInitializedClassLoaderWeavingAdaptor.getWeavingAdaptor(Aj.java:156)
>        at org.aspectj.weaver.loadtime.Aj$WeaverContainer.getWeaver(Aj.java:122)
>        at org.aspectj.weaver.loadtime.Aj.preProcess(Aj.java:73)
>        - locked <0xd5712f78> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.aspectj.weaver.loadtime.ClassPreProcessorAgentAdapter.transform(ClassPreProcessorAgentAdapter.java:52)
>        at org.apache.geronimo.transformer.TransformerCollection.transform(TransformerCollection.java:43)
>        at sun.instrument.TransformerManager.transform(TransformerManager.java:169)
>        at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:365)
>        at java.lang.ClassLoader.defineClass1(Native Method)
>        at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
>        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
>        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
>        at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
>        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
>        at java.security.AccessController.doPrivileged(Native Method)
>        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadOptimizedClass(MultiParentClassLoader.java:407)
>        - locked <0xd5712f78> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at org.apache.geronimo.kernel.config.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:255)
>        - locked <0xd5712f78> (a org.apache.geronimo.kernel.config.MultiParentClassLoader)
>        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
>        at org.apache.geronimo.gbean.runtime.GBeanInstance.<init>(GBeanInstance.java:228)
>        at org.apache.geronimo.kernel.basic.BasicKernel.loadGBean(BasicKernel.java:352)
>        at org.apache.geronimo.kernel.config.ConfigurationUtil.startConfigurationGBeans(ConfigurationUtil.java:441)
>        at org.apache.geronimo.kernel.config.KernelConfigurationManager.start(KernelConfigurationManager.java:190)
>        at org.apache.geronimo.kernel.config.SimpleConfigurationManager.startConfiguration(SimpleConfigurationManager.java:562)
>        - locked <0xd500a750> (a org.apache.geronimo.kernel.config.EditableKernelConfigurationManager)
>        at sun.reflect.GeneratedMethodAccessor22.invoke(Unknown Source)
>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:597)
>        at org.apache.geronimo.gbean.runtime.ReflectionMethodInvoker.invoke(ReflectionMethodInvoker.java:34)
>        at org.apache.geronimo.gbean.runtime.GBeanOperation.invoke(GBeanOperation.java:130)
>        at org.apache.geronimo.gbean.runtime.GBeanInstance.invoke(GBeanInstance.java:815)
>        at org.apache.geronimo.gbean.runtime.RawInvoker.invoke(RawInvoker.java:57)
>        at org.apache.geronimo.kernel.basic.RawOperationInvoker.invoke(RawOperationInvoker.java:35)
>        at org.apache.geronimo.kernel.basic.ProxyMethodInterceptor.intercept(ProxyMethodInterceptor.java:96)
>        at org.apache.geronimo.gbean.GBeanLifecycle$$EnhancerByCGLIB$$752a2ecb.startConfiguration(<generated>)
>        at org.apache.geronimo.system.main.EmbeddedDaemon.doStartup(EmbeddedDaemon.java:161)
>        at org.apache.geronimo.system.main.EmbeddedDaemon.execute(EmbeddedDaemon.java:78)
>        at org.apache.geronimo.kernel.util.MainConfigurationBootstrapper.main(MainConfigurationBootstrapper.java:45)
>        at org.apache.geronimo.cli.AbstractCLI.executeMain(AbstractCLI.java:65)
>        at org.apache.geronimo.cli.daemon.DaemonCLI.main(DaemonCLI.java:30)
> {noformat}

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