Hi all, I came upon an apparent deadlock when working with MSC services in the AbstractRemoveStepHandler.performRuntime() My code is like this: performRuntime(OperationContext context, ModelNode operation, ModelNode model) { sr = context.getServiceRegistry(true); ... which will hang under certain circumstances inside getServiceRegistry() What I'm trying to do here is obtain an MSC service inside the performRuntime() so I can make some calls on it. The stack trace is below [1]. I'm a little confused about the fact that it says 'locked 78fb1b0' and then a few lines up says 'waiting on 78fb1b0' in the same thread. Is this a bug? Or should I be interacting with services in a different way from here? I'm also attaching the full threaddump.txt in case someone is interested. I noticed that another thread is also doing something wrt to removing a resource, but I don't understand why that should block a service registry lookup. Thanks, David [1] "management-handler-thread - 2" prio=5 tid=0000000001a41000 nid=0xb30e3000 in Object.wait() [00000000b30e2000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) - waiting on <00000000078fd1b0> (a org.jboss.as.controller.ContainerStateMonitor) at java.lang.Object.wait(Object.java:485) at org.jboss.as.controller.ContainerStateMonitor.await(ContainerStateMonitor.java:153) - locked <00000000078fd1b0> (a org.jboss.as.controller.ContainerStateMonitor) at org.jboss.as.controller.ModelControllerImpl.awaitContainerMonitor(ModelControllerImpl.java:428) at org.jboss.as.controller.OperationContextImpl.awaitContainerMonitor(OperationContextImpl.java:373) at org.jboss.as.controller.OperationContextImpl.getServiceRegistry(OperationContextImpl.java:226) at org.jboss.as.configadmin.parser.ConfigAdminExtension.getConfigAdminService(ConfigAdminExtension.java:48) at org.jboss.as.configadmin.parser.ConfigurationRemove.performRuntime(ConfigurationRemove.java:48) at org.jboss.as.controller.AbstractRemoveStepHandler$1.execute(AbstractRemoveStepHandler.java:50) at org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:385) at org.jboss.as.controller.AbstractOperationContext.doCompleteStep(AbstractOperationContext.java:272) at org.jboss.as.controller.AbstractOperationContext.completeStep(AbstractOperationContext.java:200) at org.jboss.as.controller.ModelControllerImpl$DefaultPrepareStepHandler.execute(ModelControllerImpl.java:466) at org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:385) at org.jboss.as.controller.AbstractOperationContext.doCompleteStep(AbstractOperationContext.java:272) at org.jboss.as.controller.AbstractOperationContext.completeStep(AbstractOperationContext.java:200) at org.jboss.as.controller.ModelControllerImpl.execute(ModelControllerImpl.java:121) at org.jboss.as.controller.ModelControllerImpl$1.execute(ModelControllerImpl.java:304) at org.jboss.as.controller.ModelControllerImpl$1.execute(ModelControllerImpl.java:294) at org.jboss.as.configadmin.service.ConfigAdminServiceImpl.removeConfiguration(ConfigAdminServiceImpl.java:150) at org.jboss.as.configadmin.parser.ConfigurationRemove.performRuntime(ConfigurationRemove.java:50) at org.jboss.as.controller.AbstractRemoveStepHandler$1.execute(AbstractRemoveStepHandler.java:50) at org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:385) at org.jboss.as.controller.AbstractOperationContext.doCompleteStep(AbstractOperationContext.java:272) at org.jboss.as.controller.AbstractOperationContext.completeStep(AbstractOperationContext.java:200) at org.jboss.as.controller.ModelControllerImpl$DefaultPrepareStepHandler.execute(ModelControllerImpl.java:466) at org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:385) at org.jboss.as.controller.AbstractOperationContext.doCompleteStep(AbstractOperationContext.java:272) at org.jboss.as.controller.AbstractOperationContext.completeStep(AbstractOperationContext.java:200) at org.jboss.as.controller.ModelControllerImpl.execute(ModelControllerImpl.java:121) at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler.doExecute(ModelControllerClientOperationHandler.java:139) at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler$1.execute(ModelControllerClientOperationHandler.java:108) at org.jboss.as.protocol.mgmt.AbstractMessageHandler$2$1.doExecute(AbstractMessageHandler.java:287) at org.jboss.as.protocol.mgmt.AbstractMessageHandler$AsyncTaskRunner.run(AbstractMessageHandler.java:487) 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:680) at org.jboss.threads.JBossThread.run(JBossThread.java:122)