[JIRA] (JENKINS-15929) Visiting Configure System page in Jenkins causes deadlock in JClouds plugin, freezing entire system

[jenk...@adamrofer.com (JIRA)]

Adam Rofer created JENKINS-15929 Visiting Configure System page in Jenkins causes deadlock in JClouds plugin, freezing entire system Issue Type: Bug Assignee: abayer Components: jclouds Created: 26/Nov/12 11:23 PM Description: Booting up jenkins and using it works fine. If I visit the Configure System page, it appears to populate the settings I have correctly but then it freezes all of jenkins (first noticed as expanding a help bubble never succeeded). No more logs are produced by jenkins. Running jstack on the Jenkins process reveals this: Found one Java-level deadlock: ============================= "Handling POST /jenkins/descriptorByName/jenkins.plugins.jclouds.compute.JCloudsSlaveTemplate/fillHardwareIdItems : RequestHandlerThread14": waiting to lock Monitor@0x00007f7ad800aac8 (Object@0x00000004c4438d38, a java/lang/Class), which is held by "Handling POST /jenkins/descriptorByName/jenkins.plugins.jclouds.compute.JCloudsSlaveTemplate/fillHardwareIdItems : RequestHandlerThread20" "Handling POST /jenkins/descriptorByName/jenkins.plugins.jclouds.compute.JCloudsSlaveTemplate/fillHardwareIdItems : RequestHandlerThread20": waiting to lock Monitor@0x00007f7afc207150 (Object@0x00000004c1164bc8, a java/lang/Class), which is held by "Handling POST /jenkins/descriptorByName/jenkins.plugins.jclouds.compute.JCloudsSlaveTemplate/fillHardwareIdItems : RequestHandlerThread14" I have the complete stack dump too, if that is needed. The only solution is restarting jenkins once the page has been visited. Environment: Jenkins 1.492, JClouds plugin 2.3.1, CentOS 6 Project: Jenkins Priority: Critical Reporter: Adam Rofer

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