Jenkins deadlock while loading jobs after plugin updates

[Pieter-Jan Busschaert]

Hello,


This morning I updated plugins on Jenkins 2.11, however after the restart Jenkins stays on the "Please wait while Jenkins is getting ready to work..." page.
I took a JVM thread dump and see "Found one Java-level deadlock", which lists the loading of 2 jobs.

Plugins which I updated:

• Git plugin
• Pipeline: Step API
• Durable Task Plugin
• GitHub API Plugin
• Pipeline: Nodes and Processes
• Pipeline: Groovy
• Pipeline: Shared Groovy Libraries

In attachment I have the Jenkins log since I entered the update center and triggered the update + restart + the thread dump with the deadlock.

Issuing the command "service jenkins restart" over an SSH connection fixed the issue for us, but maybe still interesting for someone to have a look.

Please advise if I should revert back one of those plugin updates or if this was just bad luck.

Kind regards,

Pieter-Jan