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  1. JBoss Enterprise Application Platform
  2. JBEAP-20706

[GSS](7.3.z) UNDERTOW-1828 NullPointerException occurred if a servlet calls HttpServletRequest#getContextPath() while EAP was shutting down

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Details

    • Bug
    • Resolution: Done
    • Major
    • 7.3.6.CR1, 7.3.6.GA
    • 7.3.4.GA
    • Undertow
    • None
    • False
    • False
    • +
    • Undefined
    • Workaround Exists
    • Hide

      use graceful shutdown like as `shutdown --suspend-timeout=60`.

      Show
      use graceful shutdown like as `shutdown --suspend-timeout=60`.
    • Hide

      1. startup EAP with default standalone.xml.
      2. deploy the reproducer application attached on this jira.
      3. execute servlet that invokes getContextPath() after sleeping 10 seconds. (http://localhost:8080/hello/hello)
      4. shutdown EAP with Ctrl+C during sleeping the servlet.

      Show
      1. startup EAP with default standalone.xml. 2. deploy the reproducer application attached on this jira. 3. execute servlet that invokes getContextPath() after sleeping 10 seconds. ( http://localhost:8080/hello/hello ) 4. shutdown EAP with Ctrl+C during sleeping the servlet.

    Description

      When calling HttpServlet#getContextPath() from a servlet while the EAP is shutting down, the call will throws an NPE with the following stack trace.

      2020-12-11 14:41:44,383 INFO  [org.jboss.as.server] (Thread-2) WFLYSRV0272: Suspending server
2020-12-11 14:41:44,387 INFO  [org.jboss.as.ejb3] (Thread-2) WFLYEJB0493: EJB subsystem suspension complete
2020-12-11 14:41:44,415 INFO  [org.jboss.as.server] (Thread-2) WFLYSRV0220: Server shutdown has been requested via an OS signal
2020-12-11 14:41:44,436 INFO  [org.jboss.as.mail.extension] (MSC service thread 1-5) WFLYMAIL0002: Unbound mail session [java:jboss/mail/Default]
2020-12-11 14:41:44,437 INFO  [org.wildfly.extension.undertow] (ServerService Thread Pool -- 77) WFLYUT0022: Unregistered web context: '/hello' from server 'default-server'
2020-12-11 14:41:44,443 INFO  [org.jboss.as.connector.subsystems.datasources] (MSC service thread 1-8) WFLYJCA0010: Unbound data source [java:jboss/datasources/ExampleDS]
2020-12-11 14:41:44,446 INFO  [org.jboss.as.connector.deployers.jdbc] (MSC service thread 1-8) WFLYJCA0019: Stopped Driver service with driver-name = h2
2020-12-11 14:41:44,452 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-8) WFLYUT0019: Host default-host stopping
2020-12-11 14:41:44,454 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 77) WFLYCLINF0003: Stopped client-mappings cache from ejb container
2020-12-11 14:41:44,475 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-2) WFLYUT0008: Undertow HTTPS listener https suspending
2020-12-11 14:41:44,475 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-8) WFLYUT0008: Undertow HTTP listener default suspending
2020-12-11 14:41:44,475 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-8) WFLYUT0007: Undertow HTTP listener default stopped, was bound to 127.0.0.1:8080
2020-12-11 14:41:44,475 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-2) WFLYUT0007: Undertow HTTPS listener https stopped, was bound to 127.0.0.1:8443
2020-12-11 14:41:44,476 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-4) WFLYUT0004: Undertow 2.0.32.SP1-redhat-00001 stopping
2020-12-11 14:41:44,477 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-8) WFLYSRV0028: Stopped deployment hello.war (runtime-name: hello.war) in 53ms
2020-12-11 14:41:44,586 ERROR [io.undertow.request] (default task-1) UT005023: Exception handling request to /hello/hello: java.lang.NullPointerException
	at io.undertow.servlet.spec.ServletContextImpl.getContextPath(ServletContextImpl.java:210)
	at io.undertow.servlet.spec.HttpServletRequestImpl.getContextPath(HttpServletRequestImpl.java:296)
	at com.example.Hello.doGet(Hello.java:29)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:503)
    ...

      Attachments

        1. reproducer.zip
          3 kB
        2. server.log
          28 kB

        Issue Links

          is blocked by

          Bug - A problem that impairs or prevents the functions of the product. UNDERTOW-1828 NullPointerException occurred if a servlet calls HttpServletRequest#getContextPath() while EAP was shutting down

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Resolved
          is incorporated by

          Component Upgrade - A task tracking an update to a bundled component or revision of component upstream of the project. JBEAP-20628 [GSS] (7.3.z) Upgrade undertow from 2.0.33.SP2-redhat-00001 to 2.0.34.SP1-redhat-00001

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed

          Activity

            People

              mshikalw Moulali Shikalwadi
              rhn-support-hdaicho Hiroki Daicho (Inactive)
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              Dates

                Created:
                Updated:
                Resolved: