Random NPE in org.jboss.as.controller.OperationContextImpl.createTargetAttribute -------------------------------------------------------------------------------- Key: WFCORE-520 URL: https://issues.jboss.org/browse/WFCORE-520 Project: WildFly Core Issue Type: Bug Components: Domain Management Affects Versions: 1.0.0.Alpha9 Reporter: Brad Maxwell Assignee: Brian Stansberry Fix For: 1.0.0.Alpha19 Attachments: JMXTest.java, server.log A NullPointerException randomly occurs in org.jboss.as.controller.OperationContextImpl.createTargetAttribute(OperationContextImpl.java:1172) when getMBeanCount is called over and over. See attached server.log and reproducer {noformat} 00:16:01,315 ERROR [org.jboss.as.controller.management-operation] (pool-2-thread-2) WFLYCTL0013: Operation ("check-default-resource-access") failed - address: ([ ("core-service" => "management"), ("service" => "management-operations"), ("active-operation" => "-1652526387") ]): java.lang.NullPointerException at org.jboss.as.controller.OperationContextImpl.createTargetAttribute(OperationContextImpl.java:1172) [wildfly-controller-1.0.0.Alpha9.jar:1.0.0.Alpha9] at org.jboss.as.controller.OperationContextImpl.authorizeResource(OperationContextImpl.java:1136) [wildfly-controller-1.0.0.Alpha9.jar:1.0.0.Alpha9] at org.jboss.as.controller.OperationContextImpl.authorizeResource(OperationContextImpl.java:130) [wildfly-controller-1.0.0.Alpha9.jar:1.0.0.Alpha9] at org.jboss.as.controller.operations.global.ReadResourceDescriptionHandler$CheckResourceAccessHandler.execute(ReadResourceDescriptionHandler.java:467) [wildfly-controller-1.0.0.Alpha9.jar:1.0.0.Alpha9] at org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:700) [wildfly-controller-1.0.0.Alpha9.jar:1.0.0.Alpha9] at org.jboss.as.controller.AbstractOperationContext.doCompleteStep(AbstractOperationContext.java:535) [wildfly-controller-1.0.0.Alpha9.jar:1.0.0.Alpha9] at org.jboss.as.controller.AbstractOperationContext.completeStepInternal(AbstractOperationContext.java:308) [wildfly-controller-1.0.0.Alpha9.jar:1.0.0.Alpha9] at org.jboss.as.controller.AbstractOperationContext.executeOperation(AbstractOperationContext.java:303) [wildfly-controller-1.0.0.Alpha9.jar:1.0.0.Alpha9] at org.jboss.as.controller.OperationContextImpl.executeOperation(OperationContextImpl.java:1158) [wildfly-controller-1.0.0.Alpha9.jar:1.0.0.Alpha9] at org.jboss.as.controller.ModelControllerImpl.internalExecute(ModelControllerImpl.java:328) [wildfly-controller-1.0.0.Alpha9.jar:1.0.0.Alpha9] at org.jboss.as.controller.ModelControllerImpl.execute(ModelControllerImpl.java:197) [wildfly-controller-1.0.0.Alpha9.jar:1.0.0.Alpha9] at org.jboss.as.jmx.model.ResourceAccessControlUtil.getResourceAccess(ResourceAccessControlUtil.java:85) [wildfly-jmx-1.0.0.Alpha9.jar:1.0.0.Alpha9] at org.jboss.as.jmx.model.RootResourceIterator.doIterate(RootResourceIterator.java:51) [wildfly-jmx-1.0.0.Alpha9.jar:1.0.0.Alpha9] at org.jboss.as.jmx.model.RootResourceIterator.doIterate(RootResourceIterator.java:61) [wildfly-jmx-1.0.0.Alpha9.jar:1.0.0.Alpha9] at org.jboss.as.jmx.model.RootResourceIterator.doIterate(RootResourceIterator.java:61) [wildfly-jmx-1.0.0.Alpha9.jar:1.0.0.Alpha9] at org.jboss.as.jmx.model.RootResourceIterator.doIterate(RootResourceIterator.java:61) [wildfly-jmx-1.0.0.Alpha9.jar:1.0.0.Alpha9] at org.jboss.as.jmx.model.RootResourceIterator.iterate(RootResourceIterator.java:43) [wildfly-jmx-1.0.0.Alpha9.jar:1.0.0.Alpha9] at org.jboss.as.jmx.model.ModelControllerMBeanHelper.getMBeanCount(ModelControllerMBeanHelper.java:105) [wildfly-jmx-1.0.0.Alpha9.jar:1.0.0.Alpha9] at org.jboss.as.jmx.model.ModelControllerMBeanServerPlugin.getMBeanCount(ModelControllerMBeanServerPlugin.java:154) [wildfly-jmx-1.0.0.Alpha9.jar:1.0.0.Alpha9] at org.jboss.as.jmx.PluggableMBeanServerImpl.getMBeanCount(PluggableMBeanServerImpl.java:561) [wildfly-jmx-1.0.0.Alpha9.jar:1.0.0.Alpha9] at org.jboss.as.jmx.BlockingNotificationMBeanServer.getMBeanCount(BlockingNotificationMBeanServer.java:143) [wildfly-jmx-1.0.0.Alpha9.jar:1.0.0.Alpha9] at org.jboss.remotingjmx.protocol.v2.ServerProxy$GetMBeanCountHandler.handle(ServerProxy.java:655) at org.jboss.remotingjmx.protocol.v2.ServerCommon$MessageReciever$1$1.run(ServerCommon.java:153) at org.jboss.as.jmx.ServerInterceptorFactory$Interceptor$1.run(ServerInterceptorFactory.java:75) [wildfly-jmx-1.0.0.Alpha9.jar:1.0.0.Alpha9] at org.jboss.as.jmx.ServerInterceptorFactory$Interceptor$1.run(ServerInterceptorFactory.java:70) [wildfly-jmx-1.0.0.Alpha9.jar:1.0.0.Alpha9] at java.security.AccessController.doPrivileged(Native Method) [rt.jar:1.7.0_51] at javax.security.auth.Subject.doAs(Subject.java:415) [rt.jar:1.7.0_51] at org.jboss.as.controller.AccessAuditContext.doAs(AccessAuditContext.java:94) [wildfly-controller-1.0.0.Alpha9.jar:1.0.0.Alpha9] at org.jboss.as.jmx.ServerInterceptorFactory$Interceptor.handleEvent(ServerInterceptorFactory.java:70) [wildfly-jmx-1.0.0.Alpha9.jar:1.0.0.Alpha9] at org.jboss.remotingjmx.protocol.v2.ServerCommon$MessageReciever$1.run(ServerCommon.java:149) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_51] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_51] at java.lang.Thread.run(Thread.java:744) [rt.jar:1.7.0_51] {noformat}