Uploaded image for project: 'Jenkins'
  1. Jenkins
  2. JENKINS-56031

SSH plugin fails intermittently because of issue with JSch

    XMLWordPrintable

Details

    Description

      This is similar to an earlier bug https://issues.jenkins-ci.org/browse/JENKINS-24402?jql=text%20~%20%22jsch%22

       

      Same problem has resurfaced in the later releases of JSch, because of that we get failed builds intermittently with the below error.

       

      JSch has included a fix for this problem in the latest version , v0.1.55.

      Upgrading Jenkins SSH plugin to this version should fix this problem.

       

      These discussion forums provide the context

      discussion about the issues in JSch and fix https://sourceforge.net/p/jsch/bugs/111/

      discussion about previous fix in Jenkins SSH plugin and further recurrences https://stackoverflow.com/questions/12279836/ssh-using-jschexception-verify-false-sometimes-fails

       

      Stacktrace:

      [SSH] executing...
      [SSH] Exception:Session.connect: java.security.SignatureException: Invalid encoding for signature
      com.jcraft.jsch.JSchException: Session.connect: java.security.SignatureException: Invalid encoding for signature
      at com.jcraft.jsch.Session.connect(Session.java:565)
      at org.jvnet.hudson.plugins.CredentialsSSHSite.createSession(CredentialsSSHSite.java:132)
      at org.jvnet.hudson.plugins.CredentialsSSHSite.executeCommand(CredentialsSSHSite.java:208)
      at org.jvnet.hudson.plugins.SSHBuilder.perform(SSHBuilder.java:104)
      at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
      at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:744)
      at hudson.model.Build$BuildExecution.build(Build.java:206)
      at hudson.model.Build$BuildExecution.doRun(Build.java:163)
      at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:504)
      at hudson.model.Run.execute(Run.java:1798)
      at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
      at hudson.model.ResourceController.execute(ResourceController.java:97)
      at hudson.model.Executor.run(Executor.java:429)

       

      Attachments

        Activity

          People

            kusumanchi V Kusumanchi
            kusumanchi V Kusumanchi
            Votes:
            0 Vote for this issue
            Watchers:
            4 Start watching this issue

            Dates

              Created:
              Updated: