[JENKINS-43283] Unable to run batch script with root working directory

If you try to run a batch script while in a root directory (e.g. c:\), it will fail. It looks like BatchController tries to make a temporary directory that's a sibling of the working directory, but c:\ has no parent directory. I did this in a pipeline script, I don't know if it's possible in a freestyle job (possibly if the workspace were set to c:\).

Jenkinsfile

node 'windows', {

	dir 'c:\\', {

		bat 'echo test'

	}

}

Stacktrace

java.lang.NullPointerException

	at hudson.FilePath.sibling(FilePath.java:1257)

	at org.jenkinsci.plugins.durabletask.FileMonitoringTask$FileMonitoringController.tempDir(FileMonitoringTask.java:208)

	at org.jenkinsci.plugins.durabletask.FileMonitoringTask$FileMonitoringController.(FileMonitoringTask.java:113)

	at org.jenkinsci.plugins.durabletask.WindowsBatchScript$BatchController.(WindowsBatchScript.java:94)

	at org.jenkinsci.plugins.durabletask.WindowsBatchScript$BatchController.(WindowsBatchScript.java:92)

	at org.jenkinsci.plugins.durabletask.WindowsBatchScript.doLaunch(WindowsBatchScript.java:60)

	at org.jenkinsci.plugins.durabletask.FileMonitoringTask.launchWithCookie(FileMonitoringTask.java:68)

	at org.jenkinsci.plugins.durabletask.FileMonitoringTask.launch(FileMonitoringTask.java:63)

	at org.jenkinsci.plugins.workflow.steps.durable_task.DurableTaskStep$Execution.start(DurableTaskStep.java:166)

---
Originally reported by mrozekma, imported from: Unable to run batch script with root working directory

• status: Open
  
• priority: Minor
  
• component(s): durable-task-plugin
  
• label(s): NullPointerException, bat, triaged-2018-11, windows
  
• resolution: Unresolved
  
• votes: 2
  
• watchers: 5
  
• imported: 2025-12-09
  

Raw content of original issue

If you try to run a batch script while in a root directory (e.g. c:\), it will fail. It looks like BatchController tries to make a temporary directory that's a sibling of the working directory, but c:\ has no parent directory. I did this in a pipeline script, I don't know if it's possible in a freestyle job (possibly if the workspace were set to c:\).


Jenkinsfile




node 'windows', {

	dir 'c:\\', {

		bat 'echo test'

	}

}







Stacktrace




java.lang.NullPointerException

	at hudson.FilePath.sibling(FilePath.java:1257)

	at org.jenkinsci.plugins.durabletask.FileMonitoringTask$FileMonitoringController.tempDir(FileMonitoringTask.java:208)

	at org.jenkinsci.plugins.durabletask.FileMonitoringTask$FileMonitoringController.<init>(FileMonitoringTask.java:113)

	at org.jenkinsci.plugins.durabletask.WindowsBatchScript$BatchController.<init>(WindowsBatchScript.java:94)

	at org.jenkinsci.plugins.durabletask.WindowsBatchScript$BatchController.<init>(WindowsBatchScript.java:92)

	at org.jenkinsci.plugins.durabletask.WindowsBatchScript.doLaunch(WindowsBatchScript.java:60)

	at org.jenkinsci.plugins.durabletask.FileMonitoringTask.launchWithCookie(FileMonitoringTask.java:68)

	at org.jenkinsci.plugins.durabletask.FileMonitoringTask.launch(FileMonitoringTask.java:63)

	at org.jenkinsci.plugins.workflow.steps.durable_task.DurableTaskStep$Execution.start(DurableTaskStep.java:166)

• environment: Jenkins 2.52, Durable Task Plugin 1.13