jenkinsci / jenkinsci/postbuild-task-plugin

[JENKINS-16052] Empty Post-Build Action Causing NPE

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component:postbuild-task-plugin imported-jira-issue priority:minor resolution:unresolved
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Description

I just stood up a new Jenkins instance and imported a lot (300+) jobs from an old Hudson instance.

On both old (imported) and newly created jobs, selecting "Configure" for the job creates an empty post-build action. Trying to save with this empty action in the configuration causes a 500/NPE. The workaround is to go back and remove the empty post-build action; it then saves correctly.

This is the stack trace:

javax.servlet.ServletException: java.lang.NullPointerException

at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:615)

at org.kohsuke.stapler.Stapler.invoke(Stapler.java:658)

at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:241)

at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)

at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:573)

at org.kohsuke.stapler.Stapler.invoke(Stapler.java:658)

at org.kohsuke.stapler.Stapler.invoke(Stapler.java:487)

at org.kohsuke.stapler.Stapler.service(Stapler.java:164)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:95)

at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:87)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:47)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)

at hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:51)

at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)

at org.acegisecurity.ui.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:166)

at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)

at org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)

at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)

at org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:142)

at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)

at org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271)

at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)

at org.acegisecurity.ui.basicauth.BasicProcessingFilter.doFilter(BasicProcessingFilter.java:173)

at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)

at jenkins.security.ApiTokenFilter.doFilter(ApiTokenFilter.java:63)

at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)

at org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)

at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:66)

at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)

at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)

at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:164)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:50)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)

at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)

at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002)

at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)

at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)

at java.lang.Thread.run(Thread.java:722)

Caused by: java.lang.NullPointerException

at hudson.model.Descriptor.newInstancesFromHeteroList(Descriptor.java:939)

at hudson.model.Descriptor.newInstancesFromHeteroList(Descriptor.java:926)

at hudson.util.DescribableList.rebuildHetero(DescribableList.java:203)

at hudson.maven.MavenModuleSet.submit(MavenModuleSet.java:1120)

at hudson.model.Job.doConfigSubmit(Job.java:1045)

at hudson.model.AbstractProject.doConfigSubmit(AbstractProject.java:722)

at sun.reflect.GeneratedMethodAccessor1036.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:288)

at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:151)

at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:90)

at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:111)

at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)

at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:573)

... 59 more

---
Originally reported by breitenb, imported from: Empty Post-Build Action Causing NPE


  • status: Open
  • priority: Minor
  • component(s): postbuild-task-plugin
  • resolution: Unresolved
  • votes: 0
  • watchers: 2
  • imported: 20251223-222157

Raw content of original issue

I just stood up a new Jenkins instance and imported a lot (300+) jobs from an old Hudson instance.  



On both old (imported) and newly created jobs, selecting "Configure" for the job creates an empty post-build action.  Trying to save with this empty action in the configuration causes a 500/NPE.  The workaround is to go back and remove the empty post-build action; it then saves correctly.  



This is the stack trace: 



javax.servlet.ServletException: java.lang.NullPointerException

	at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:615)

	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:658)

	at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:241)

	at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)

	at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:573)

	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:658)

	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:487)

	at org.kohsuke.stapler.Stapler.service(Stapler.java:164)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

	at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:95)

	at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:87)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

	at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:47)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)

	at hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:51)

	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)

	at org.acegisecurity.ui.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:166)

	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)

	at org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)

	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)

	at org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:142)

	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)

	at org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271)

	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)

	at org.acegisecurity.ui.basicauth.BasicProcessingFilter.doFilter(BasicProcessingFilter.java:173)

	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)

	at jenkins.security.ApiTokenFilter.doFilter(ApiTokenFilter.java:63)

	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)

	at org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)

	at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:66)

	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)

	at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)

	at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:164)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

	at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:50)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

	at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)

	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)

	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)

	at java.lang.Thread.run(Thread.java:722)

Caused by: java.lang.NullPointerException

	at hudson.model.Descriptor.newInstancesFromHeteroList(Descriptor.java:939)

	at hudson.model.Descriptor.newInstancesFromHeteroList(Descriptor.java:926)

	at hudson.util.DescribableList.rebuildHetero(DescribableList.java:203)

	at hudson.maven.MavenModuleSet.submit(MavenModuleSet.java:1120)

	at hudson.model.Job.doConfigSubmit(Job.java:1045)

	at hudson.model.AbstractProject.doConfigSubmit(AbstractProject.java:722)

	at sun.reflect.GeneratedMethodAccessor1036.invoke(Unknown Source)

	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

	at java.lang.reflect.Method.invoke(Method.java:601)

	at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:288)

	at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:151)

	at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:90)

	at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:111)

	at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)

	at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:573)

	... 59 more

Contributor guide

Open the contributing guide

Research direction

Start by reproducing the issue through a job's Configure page and saving with an empty post-build action. Read hudson.maven.MavenModuleSet.submit, hudson.util.DescribableList.rebuildHetero, and hudson.model.Descriptor.newInstancesFromHeteroList, which appear in the stack trace. Done means the configuration saves without a 500 response or NullPointerException.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
ci-cd
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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