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https://issues.apache.org/jira/browse/SLING-12421?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Julian Sedding resolved SLING-12421.
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Resolution: Fixed
> Race between serving request and destroying JspServletWrapper
> -------------------------------------------------------------
>
> Key: SLING-12421
> URL: https://issues.apache.org/jira/browse/SLING-12421
> Project: Sling
> Issue Type: Bug
> Components: Scripting
> Affects Versions: Scripting JSP 2.6.2
> Reporter: Julian Sedding
> Assignee: Julian Sedding
> Priority: Minor
> Fix For: Scripting JSP 2.6.4
>
>
> When a {{JspServletWrapper}} is destroyed, it is possible that a request is
> still being served concurrently. This can lead to a {{NullPointerException}}
> if the internal field {{theServlet}} is already set to {{null}} by the time
> it's {{service()}} method is called.
> To fix this, {{theServlet}} should be copied to a local field at the
> beginning of the {{JspServletWrapper#service()}} method.
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