Reoccurring null in LockableResourcesManager resources

[Naadwo]

Jenkins and plugins versions report

Environment

Jenkins: 2.426.2
OS: Linux - 5.15.0-1064-azure
Java: 17.0.9 - Eclipse Adoptium (OpenJDK 64-Bit Server VM)
lockable-resources:1218.va_3dd45e2b_fa_7

What Operating System are you using (both controller, and any agents involved in the problem)?

Jenkins is running in a container on Ubuntu 22

Reproduction steps

Unfortunately I do not have exact steps to reproduce the issue. I have a number of jobs that use lockable resources, so resources are locked/unlocked continuously minimum few times a minute. I've observed that every few days somehow a null is added to LockableResourcesManager resources list. This breaks not only the plugin (any call to step lock throws exception), but also global Jenkins configuration and the only option to fix it, is to directly replace resources list in LockableResourcesManager.
I'm not using any advanced features of this plugin, only simple step lock('lock-name') { }
I was tryin to find any logs from when this null was added, but I didn't find any.
I doubt it matters, but in my case job name is often used as resource name.

Expected Results

I don't know how is that even possible that a null resource is added to the LockableResourcesManager.resources, but I would expect that LockableResourcesManager should be able to remove it as clearly invalid entry.

Actual Results

I've observed two logs in case of failure (but I'm not sure why there are two variants) - both often appear mixed in log of the same job, that attempts to lock always the same resource.

Trying to acquire lock on [<lock name>]
[Pipeline] // lock
[Pipeline] End of Pipeline
java.lang.NullPointerException
Finished: FAILURE

and longer one:

[Pipeline] lock
Trying to acquire lock on [<lock name>]
[Pipeline] // lock
[Pipeline] End of Pipeline
Also:   org.jenkinsci.plugins.workflow.actions.ErrorAction$ErrorId: a326e53e-1b63-49e1-9293-60b260f97d14
java.lang.NullPointerException: Cannot invoke "org.jenkins.plugins.lockableresources.LockableResource.getName()" because "r" is null
	at org.jenkins.plugins.lockableresources.LockableResourcesManager.fromName(LockableResourcesManager.java:272)
	at org.jenkins.plugins.lockableresources.LockableResourcesManager.resourceExist(LockableResourcesManager.java:292)
	at org.jenkins.plugins.lockableresources.LockableResourcesManager.addResource(LockableResourcesManager.java:803)
	at org.jenkins.plugins.lockableresources.LockableResourcesManager.createResource(LockableResourcesManager.java:753)
	at org.jenkins.plugins.lockableresources.LockStepExecution.start(LockStepExecution.java:55)
	at org.jenkinsci.plugins.workflow.cps.DSL.invokeStep(DSL.java:323)
	at org.jenkinsci.plugins.workflow.cps.DSL.invokeMethod(DSL.java:196)
	at org.jenkinsci.plugins.workflow.cps.CpsScript.invokeMethod(CpsScript.java:124)
	at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:47)
	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)
	at com.cloudbees.groovy.cps.sandbox.DefaultInvoker.methodCall(DefaultInvoker.java:20)
	at org.jenkinsci.plugins.workflow.cps.LoggingInvoker.methodCall(LoggingInvoker.java:105)
	at discardOtherConcurrent.call(discardOtherConcurrent.groovy:6)
	at discardOtherConcurrent.call(discardOtherConcurrent.groovy)
	at WorkflowScript.run(WorkflowScript:32)
	at ___cps.transform___(Native Method)
	at com.cloudbees.groovy.cps.impl.ContinuationGroup.methodCall(ContinuationGroup.java:90)
	at com.cloudbees.groovy.cps.impl.FunctionCallBlock$ContinuationImpl.dispatchOrArg(FunctionCallBlock.java:116)
	at com.cloudbees.groovy.cps.impl.FunctionCallBlock$ContinuationImpl.fixArg(FunctionCallBlock.java:85)
	at jdk.internal.reflect.GeneratedMethodAccessor247.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at com.cloudbees.groovy.cps.impl.ContinuationPtr$ContinuationImpl.receive(ContinuationPtr.java:72)
	at com.cloudbees.groovy.cps.impl.ClosureBlock.eval(ClosureBlock.java:46)
	at com.cloudbees.groovy.cps.Next.step(Next.java:83)
	at com.cloudbees.groovy.cps.Continuable$1.call(Continuable.java:152)
	at com.cloudbees.groovy.cps.Continuable$1.call(Continuable.java:146)
	at org.codehaus.groovy.runtime.GroovyCategorySupport$ThreadCategoryInfo.use(GroovyCategorySupport.java:136)
	at org.codehaus.groovy.runtime.GroovyCategorySupport.use(GroovyCategorySupport.java:275)
	at com.cloudbees.groovy.cps.Continuable.run0(Continuable.java:146)
	at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.access$001(SandboxContinuable.java:18)
	at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.run0(SandboxContinuable.java:51)
	at org.jenkinsci.plugins.workflow.cps.CpsThread.runNextChunk(CpsThread.java:187)
	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.run(CpsThreadGroup.java:423)
	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:331)
	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:295)
	at org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService$2.call(CpsVmExecutorService.java:97)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at hudson.remoting.SingleLaneExecutorService$1.run(SingleLaneExecutorService.java:139)
	at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28)
	at jenkins.security.ImpersonatingExecutorService$1.run(ImpersonatingExecutorService.java:68)
	at jenkins.util.ErrorLoggingExecutorService.lambda$wrap$0(ErrorLoggingExecutorService.java:51)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	at java.base/java.lang.Thread.run(Thread.java:840)
Finished: FAILURE

Anything else?

No response

Are you interested in contributing a fix?

No response

[mPokornyETM]

May you pls install last version. 1218 a little bit old.

[epliskin]

Same problem with Jenkins 2.426.2.
Message
( java.lang.NullPointerException Cannot invoke "org.jenkins.plugins.lockableresources.LockableResource.getName()" because "r" is null)
seemingly at the exit from steps.lock() pipeline block.
This occurred for the second time in a few days.
Before that the same Jenkins installation worked smoothly for several months.
Recently have added some agent but it seems to work well...

[mPokornyETM]

Same problem with Jenkins 2.426.2. Message ( java.lang.NullPointerException Cannot invoke "org.jenkins.plugins.lockableresources.LockableResource.getName()" because "r" is null) seemingly at the exit from steps.lock() pipeline block. This occurred for the second time in a few days. Before that the same Jenkins installation worked smoothly for several months. Recently have added some agent but it seems to work well...

which plugin version do you used?

[epliskin]

Lockable Resources 1218.va_3dd45e2b_fa_7

[mPokornyETM]

1218

may you pls update the plugin to the last one version. There was many fixes and this issue is porbably fixed.

thx

[epliskin]

This plugin update probably requires total Jenkins update. Not so easy in our working environment. Will try when I can...