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  1. Jenkins
  2. JENKINS-25897

Infinite loop with crontab "H H(19-24) * * *"

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      Description

      Bug similar to JENKINS-12356 and JENKINS-12357.

      Problem: setting "Build periodically" on schedule H H(19-24) * * * triggers infinite loop. There are multiple threads taking all available CPU resources.

      http://localhost:8080/threadDump shows traces like this:

      "Handling GET /view/q/job/t/descriptorByName/hudson.triggers.TimerTrigger/checkSpec : RequestHandlerThread[#11]" Id=128 Group=main RUNNABLE
      	at java.util.GregorianCalendar.computeTime(GregorianCalendar.java:2592)
      	at java.util.Calendar.updateTime(Calendar.java:2606)
      	at java.util.Calendar.complete(Calendar.java:1558)
      	at java.util.GregorianCalendar.add(GregorianCalendar.java:891)
      	at hudson.scheduler.CronTab$CalendarField.addTo(CronTab.java:169)
      	at hudson.scheduler.CronTab.floor(CronTab.java:367)
      	at hudson.scheduler.CronTabList.previous(CronTabList.java:99)
      	at hudson.triggers.TimerTrigger$DescriptorImpl.doCheckSpec(TimerTrigger.java:81)
      	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      	at java.lang.reflect.Method.invoke(Method.java:606)
      	at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:298)
      	at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:161)
      	at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:96)
      	at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:121)
      	at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
      	at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:745)
      	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:875)
      	at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:249)
      	at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
      	at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:745)
      	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:875)
      	at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:249)
      	at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
      	at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:745)
      	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:875)
      	at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:249)
      	at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
      	at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:745)
      	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:875)
      	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:648)
      	at org.kohsuke.stapler.Stapler.service(Stapler.java:237)
      	at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
      	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:686)
      	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1494)
      	at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:96)
      	at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:88)
      	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1482)
      	at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:48)
      	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1482)
      	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)
      	at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)
      	at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:164)
      	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1482)
      	at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:46)
      	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1482)
      	at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81)
      	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1474)
      	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:499)
      	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
      	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:533)
      	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
      	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086)
      	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:428)
      	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
      	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020)
      	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
      	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
      	at org.eclipse.jetty.server.Server.handle(Server.java:370)
      	at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
      	at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:949)
      	at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1011)
      	at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644)
      	at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
      	at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
      	at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:668)
      	at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
      	at winstone.BoundedExecutorService$1.run(BoundedExecutorService.java:77)
      	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
      	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
      	at java.lang.Thread.run(Thread.java:745)
      
      	Number of locked synchronizers = 1
      	- java.util.concurrent.ThreadPoolExecutor$Worker@79fa1df7
      
      

      The issue has been identified in production with 1.580.1 and 1.565.3. The following setup was enough to reproduce the problem:

      • Jenkins: 1.580.1
      • Cron Column Plugin 1.4 (not confirmed if relevant)
      • java -version
         
        java version "1.7.0_65"
        OpenJDK Runtime Environment (IcedTea 2.5.3) (7u71-2.5.3-0ubuntu1)
        OpenJDK 64-Bit Server VM (build 24.65-b04, mixed mode)
        
      • running on Ubuntu 14.10

      Entering of this specific schedule was not enough to trigger the bug. A few editing attempts, especially changing "24" to 23 and back could trigger this infinite loop.

      In production jenkins the job with this particular schedule was not triggered at the specified hour.

      In case someone needs it: workaround for not restarting the master was to .stop() offending threads using Groovy console.

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            Assignee:
            danielbeck Daniel Beck
            Reporter:
            ortylp Paul Ortyl
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              Dates

              Created:
              Updated:
              Resolved: