JBoss EAP server (or JBoss CLI process) failed to start because org.xnio.nio.NioXnioProvider could not be instantiated

Issue

• Server failed to start with the following stack traces
  EAP 6

      09:23:08,823 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-10) MSC000001: Failed to start service jboss.remoting.endpoint.subsystem: org.jboss.msc.service.StartException in service jboss.remoting.endpoint.subsystem: Failed to start service
          at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1767) [jboss-msc-1.0.4.GA-redhat-1.jar:1.0.4.GA-redhat-1]
          at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_75]
          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_75]
          at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_75]
      Caused by: java.util.ServiceConfigurationError: org.xnio.XnioProvider: Provider org.xnio.nio.NioXnioProvider could not be instantiated
          at java.util.ServiceLoader.fail(ServiceLoader.java:224) [rt.jar:1.7.0_75]
          at java.util.ServiceLoader.access$100(ServiceLoader.java:181) [rt.jar:1.7.0_75]
          at java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:377) [rt.jar:1.7.0_75]
          at java.util.ServiceLoader$1.next(ServiceLoader.java:445) [rt.jar:1.7.0_75]
          at org.xnio.Xnio.doGetInstance(Xnio.java:187) [xnio-api-3.0.10.GA-redhat-1.jar:3.0.10.GA-redhat-1]
          at org.xnio.Xnio.getInstance(Xnio.java:146) [xnio-api-3.0.10.GA-redhat-1.jar:3.0.10.GA-redhat-1]
          at org.jboss.remoting3.Remoting.createEndpoint(Remoting.java:73) [jboss-remoting-3.2.19.GA-redhat-1.jar:3.2.19.GA-redhat-1]
          at org.jboss.as.remoting.EndpointService.start(EndpointService.java:71) [jboss-as-remoting-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
          at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.4.GA-redhat-1.jar:1.0.4.GA-redhat-1]
          at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.4.GA-redhat-1.jar:1.0.4.GA-redhat-1]
          ... 3 more
      Caused by: java.lang.NoClassDefFoundError: Could not initialize class org.xnio.nio.NioXnioProvider
          at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) [rt.jar:1.7.0_75]
          at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) [rt.jar:1.7.0_75]
          at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) [rt.jar:1.7.0_75]
          at java.lang.reflect.Constructor.newInstance(Constructor.java:526) [rt.jar:1.7.0_75]
          at java.lang.Class.newInstance(Class.java:379) [rt.jar:1.7.0_75]
          at java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:373) [rt.jar:1.7.0_75]
          ... 10 more
  
      09:23:08,823 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-3) MSC000001: Failed to start service jboss.remoting.endpoint.management: org.jboss.msc.service.StartException in service jboss.remoting.endpoint.management: Failed to start service
              at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1767) [jboss-msc-1.0.4.GA-redhat-1.jar:1.0.4.GA-redhat-1]
              at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_75]
              at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_75]
              at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_75]
      Caused by: java.util.ServiceConfigurationError: org.xnio.XnioProvider: Provider org.xnio.nio.NioXnioProvider could not be instantiated
              at java.util.ServiceLoader.fail(ServiceLoader.java:224) [rt.jar:1.7.0_75]
              at java.util.ServiceLoader.access$100(ServiceLoader.java:181) [rt.jar:1.7.0_75]
              at java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:377) [rt.jar:1.7.0_75]
              at java.util.ServiceLoader$1.next(ServiceLoader.java:445) [rt.jar:1.7.0_75]
              at org.xnio.Xnio.doGetInstance(Xnio.java:187)
              at org.xnio.Xnio.getInstance(Xnio.java:146)
              at org.jboss.remoting3.Remoting.createEndpoint(Remoting.java:73)
              at org.jboss.as.remoting.EndpointService.start(EndpointService.java:71)
              at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.4.GA-redhat-1.jar:1.0.4.GA-redhat-1]
              at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.4.GA-redhat-1.jar:1.0.4.GA-redhat-1]
              ... 3 more
      Caused by: java.lang.ExceptionInInitializerError
              at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) [rt.jar:1.7.0_75]
              at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) [rt.jar:1.7.0_75]
              at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) [rt.jar:1.7.0_75]
              at java.lang.reflect.Constructor.newInstance(Constructor.java:526) [rt.jar:1.7.0_75]
              at java.lang.Class.newInstance(Class.java:379) [rt.jar:1.7.0_75]
              at java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:373) [rt.jar:1.7.0_75]
              ... 10 more
      Caused by: java.lang.IllegalStateException: No functional selector provider is available
              at org.xnio.nio.NioXnio$2.run(NioXnio.java:158)
              at org.xnio.nio.NioXnio$2.run(NioXnio.java:81)
              at java.security.AccessController.doPrivileged(Native Method) [rt.jar:1.7.0_75]
              at org.xnio.nio.NioXnio.<init>(NioXnio.java:80)
              at org.xnio.nio.NioXnioProvider.<clinit>(NioXnioProvider.java:34)
              ... 16 more
  

  EAP 7

      XXXXXX ERROR [org.jboss.msc.service.fail] (MSC service thread 1-1) MSC000001: Failed to start service org.wildfly.io.worker.default: org.jboss.msc.service.StartException in service org.wildfly.io.worker.default: Failed to start service
          at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1904)
          at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
          at java.lang.Thread.run(Thread.java:748)
      Caused by: java.lang.IllegalArgumentException: XNIO001001: No XNIO provider found
          at org.xnio.Xnio.doGetInstance(Xnio.java:255)
          at org.xnio.Xnio.getInstance(Xnio.java:198)
          at org.wildfly.extension.io.WorkerService.start(WorkerService.java:51)
          at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1948)
          at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1881)
          ... 3 more
  

EAP 7 outputs ERROR messages with "XNIO001001: No XNIO provider found". It is necessary to enable a debug log of org.xnio to confirm the same messages as EAP 6.