One CPS VM thread was hung in a remoting call:
"Computer.threadPoolForRemoting [#...] / waiting for hudson.remoting.Channel@..."
java.lang.Thread.State: TIMED_WAITING
at java.lang.Object.wait(Native Method)
- waiting on <...> (a hudson.remoting.UserRequest)
at hudson.remoting.Request.call(Request.java:147)
at hudson.remoting.Channel.call(Channel.java:780)
at hudson.Launcher$RemoteLauncher.kill(Launcher.java:954)
at org.jenkinsci.plugins.workflow.support.steps.ExecutorStepExecution$PlaceholderTask.finish(ExecutorStepExecution.java:345)
- locked <...> (a java.util.HashMap)
at org.jenkinsci.plugins.workflow.support.steps.ExecutorStepExecution$PlaceholderTask.access$400(ExecutorStepExecution.java:145)
at org.jenkinsci.plugins.workflow.support.steps.ExecutorStepExecution$PlaceholderTask$Callback.finished(ExecutorStepExecution.java:374)
at org.jenkinsci.plugins.workflow.steps.BodyExecutionCallback$TailCall.onFailure(BodyExecutionCallback.java:123)
at ...
That held the lock on runningTasks, causing another thread to block:
"Handling POST /.../stop from ..."
java.lang.Thread.State: BLOCKED
at org.jenkinsci.plugins.workflow.support.steps.ExecutorStepExecution$PlaceholderTask.finish(ExecutorStepExecution.java:337)
- waiting to lock <...> (a java.util.HashMap) owned by "Computer.threadPoolForRemoting..."
at org.jenkinsci.plugins.workflow.support.steps.ExecutorStepExecution$PlaceholderTask.access$400(ExecutorStepExecution.java:145)
at org.jenkinsci.plugins.workflow.support.steps.ExecutorStepExecution.stop(ExecutorStepExecution.java:122)
at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution$6.onSuccess(CpsFlowExecution.java:703)
at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution$6.onSuccess(CpsFlowExecution.java:698)
at org.jenkinsci.plugins.workflow.support.concurrent.Futures$1.run(Futures.java:150)
at com.google.common.util.concurrent.MoreExecutors$SameThreadExecutorService.execute(MoreExecutors.java:253)
at com.google.common.util.concurrent.ExecutionList$RunnableExecutorPair.execute(ExecutionList.java:149)
at com.google.common.util.concurrent.ExecutionList.add(ExecutionList.java:105)
at com.google.common.util.concurrent.AbstractFuture.addListener(AbstractFuture.java:155)
at org.jenkinsci.plugins.workflow.support.concurrent.Futures.addCallback(Futures.java:160)
at org.jenkinsci.plugins.workflow.support.concurrent.Futures.addCallback(Futures.java:90)
at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.interrupt(CpsFlowExecution.java:698)
at org.jenkinsci.plugins.workflow.job.WorkflowRun$2.interrupt(WorkflowRun.java:226)
at hudson.model.Executor.interrupt(Executor.java:225)
at hudson.model.Executor.interrupt(Executor.java:195)
at hudson.model.Executor.interrupt(Executor.java:185)
at hudson.model.Executor.interrupt(Executor.java:171)
at hudson.model.Executor.doStop(Executor.java:853)
at org.jenkinsci.plugins.workflow.job.WorkflowRun.doStop(WorkflowRun.java:603)
- locked <...> (a org.jenkinsci.plugins.workflow.job.WorkflowRun)
at ...
which in turn caused many other threads to hang:
"Handling GET /jenkins/ from ... View/index.jelly View/sidepanel.jelly"
java.lang.Thread.State: WAITING
at sun.misc.Unsafe.park(Native Method)
- waiting to lock <...> (a java.util.concurrent.locks.ReentrantReadWriteLock$NonfairSync) owned by "Handling POST ..."
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireShared(AbstractQueuedSynchronizer.java:967)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireShared(AbstractQueuedSynchronizer.java:1283)
at java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock.lock(ReentrantReadWriteLock.java:727)
at hudson.model.Executor.getAsynchronousExecution(Executor.java:615)
at hudson.model.Executor.isDisplayCell(Executor.java:635)
at hudson.model.Computer.getDisplayExecutors(Computer.java:937)
at ...
JENKINS-34026 Deadlock while interrupting workflow
