Problem still occurs for EAP 6.3.0.ER10.

This issue can be reproduced in EAP 6.3 as well as 6.2.x.
In order to reproduce this issue without even involving a simple web application can be used which tries to register a servlet to "/" dynamically using ServletContext API (inside ServletContextListener) something as following:

+++++++++++++
        @Override
        public void contextInitialized(ServletContextEvent event) {
                ServletContext context = event.getServletContext();
                System.out.println("\n\t Registering ServletA from inside the MyContextListener contextInitialized method.");
                Dynamic dynamic = context.addServlet("ServletA", ServletA.class);
                dynamic.addMapping("/");
                System.out.println("\t ServletA is Registered with url-pattern /*");
        }
+++++++++++++

The attached simple servlet3 demo can be used to reproduce this issue:

Deploy the attached WAR "Servlet3DemoA.war" then access the URL:
http://localhost:8080/Servlet3DemoA/

Above should cause 404 Page not found error.

In order to workaround this change the servlet mapping to something else (like /*) other than "/"

++++++++++
        @Override
        public void contextInitialized(ServletContextEvent event) {
                ServletContext context = event.getServletContext();
                System.out.println("\n\t Registering ServletA from inside the MyContextListener contextInitialized method.");
                Dynamic dynamic = context.addServlet("ServletA", ServletA.class);
                dynamic.addMapping("/*");
                System.out.println("\t ServletA is Registered with url-pattern /*");
        }
++++++++++

Created attachment 935119 [details]
Servlet3DemoA.war

I have no information to provide. I never felt it was important to fix this and the updates needed were a bit too extensive for the benefit, which is the reason it didn't get fixed.

Bartosz Baranowski <bbaranow> updated the status of jira JBMETA-385 to Coding In Progress

Re-acking after "qa_ack flag reset for and jboss-eap-6.4.0 and jboss-eap-6.4.z items" cleanup.

Jean-Frederic Clere <jfclere> updated the status of jira JBMETA-385 to Closed

Verified for EAP 6.4.1.CP.CR2.

I got it to work by adding a "*" to the servlet mapping -> "/*".

Full example: 

public class AppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {

    @Override
    protected Class<?>[] getRootConfigClasses() {
        return null;

    protected Class<?>[] getServletConfigClasses() {
        return new Class[] { AppWebConfig.class };
    }

    @Override
    protected String[] getServletMappings() {
        return new String[] { "/*" };
    }
}

My requests are then handlet by the DispatcherServlet.

Depending on your application that may or may not be a work around. The different is that all requests that do not match other mappings will be sent to the DispatcherServlet rather than returning a 404 directly.  They will probably end up with a 404 anyway, but may not.

Retroactively bulk-closing issues from released EAP 6.4 cummulative patches.

Retroactively bulk-closing issues from released EAP 6.4 cummulative patches.