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Posted to commits@wicket.apache.org by "Youri de Boer (Jira)" <ji...@apache.org> on 2022/03/29 09:41:00 UTC
[jira] [Created] (WICKET-6966) IndexOutOfBounds in InSessionPageStore
Youri de Boer created WICKET-6966:
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Summary: IndexOutOfBounds in InSessionPageStore
Key: WICKET-6966
URL: https://issues.apache.org/jira/browse/WICKET-6966
Project: Wicket
Issue Type: Bug
Affects Versions: 9.8.0
Reporter: Youri de Boer
Recently we are seeing the following exception in our log.
{{ERROR | [default task-43] | 2022-03-28 10:19:03,978 | org.apache.wicket.util.listener.ListenerCollection$1.java:124 | Error invoking listener: org.apache.wicket.Application$2@6e1ac438 "mdw=152293"}}
{{java.lang.IndexOutOfBoundsException: Index: 0, Size: -1}}
{{ at java.base/java.util.LinkedList.checkPositionIndex(LinkedList.java:564)}}
{{ at java.base/java.util.LinkedList.listIterator(LinkedList.java:871)}}
{{ at java.base/java.util.AbstractList.listIterator(AbstractList.java:311)}}
{{ at java.base/java.util.AbstractSequentialList.iterator(AbstractSequentialList.java:238)}}
{{ at org.apache.wicket.pageStore.InSessionPageStore$SessionData.remove(InSessionPageStore.java:226)}}
{{ at org.apache.wicket.pageStore.InSessionPageStore$SessionData.add(InSessionPageStore.java:212)}}
{{ at org.apache.wicket.pageStore.InSessionPageStore$CountLimitedData.add(InSessionPageStore.java:320)}}
{{ at org.apache.wicket.pageStore.InSessionPageStore.addPage(InSessionPageStore.java:127)}}
{{ at org.apache.wicket.pageStore.CachingPageStore.addPage(CachingPageStore.java:71)}}
{{ at org.apache.wicket.pageStore.RequestPageStore.detach(RequestPageStore.java:114)}}
{{ at org.apache.wicket.page.PageManager.detach(PageManager.java:91)}}
{{ at org.apache.wicket.Application$2.onDetach(Application.java:1582)}}
{{ at org.apache.wicket.request.cycle.RequestCycleListenerCollection$3.notify(RequestCycleListenerCollection.java:105)}}
{{ at org.apache.wicket.request.cycle.RequestCycleListenerCollection$3.notify(RequestCycleListenerCollection.java:101)}}
{{ at org.apache.wicket.util.listener.ListenerCollection$1.notify(ListenerCollection.java:120)}}
{{ at org.apache.wicket.util.listener.ListenerCollection.reversedNotify(ListenerCollection.java:144)}}
{{ at org.apache.wicket.util.listener.ListenerCollection.reversedNotifyIgnoringExceptions(ListenerCollection.java:113)}}
{{ at org.apache.wicket.request.cycle.RequestCycleListenerCollection.onDetach(RequestCycleListenerCollection.java:100)}}
{{ at org.apache.wicket.request.cycle.RequestCycle.onDetach(RequestCycle.java:670)}}
{{ at org.apache.wicket.request.cycle.RequestCycle.detach(RequestCycle.java:625)}}
{{ at org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:285)}}
{{ at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:208)}}
{{ at org.apache.wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:137)}}
{{ at javax.servlet.api@2.0.0.Final-redhat-00001//javax.servlet.http.HttpServlet.service(HttpServlet.java:503)}}
When this occurs it typically appears about 100 times in a very short time span. The users experiences a hanging page.
Obviously, the size of a list can not be -1; I believe this to be a result of a race condition between one of the public methods (which are synchronized) and the writeObject method, which is not synchronized.
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