We run Jenkins 2.107.2 / 2.107.3 on Debian Linux server and >50 agents with linux, Win7, Win10 connected via JNLP.

Sometimes we use the possibility to cancel running jobs interactively without problems.

When upgrading the Jenkins server to 2.150.3 (and 2.176.2) and the agent jars appropriately, we get trouble. After canceling a job execution, the agent running the job looses the connection to the master. The agent's log says

java.nio.channels.ClosedChannelException
at org.jenkinsci.remoting.protocol.NetworkLayer.onRecvClosed(NetworkLayer.java:154)
at org.jenkinsci.remoting.protocol.impl.NIONetworkLayer.ready(NIONetworkLayer.java:179)
at org.jenkinsci.remoting.protocol.IOHub$OnReady.run(IOHub.java:795)
at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28)
at jenkins.security.ImpersonatingExecutorService$1.run(ImpersonatingExecutorService.java:59)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)

The master's log contains the following entries

Aug 01, 2019 9:35:00 AM hudson.model.Run execute
INFO: UTIL_cancel #1 aborted
java.lang.InterruptedException
at java.lang.Object.wait(Native Method)
at hudson.remoting.Request.call(Request.java:177)
at hudson.remoting.Channel.call(Channel.java:956)
at hudson.remoting.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:283)
at com.sun.proxy.$Proxy74.join(Unknown Source)
at hudson.Launcher$RemoteLauncher$ProcImpl.join(Launcher.java:1136)
at hudson.tasks.CommandInterpreter.join(CommandInterpreter.java:155)
at hudson.tasks.CommandInterpreter.perform(CommandInterpreter.java:109)
at hudson.tasks.CommandInterpreter.perform(CommandInterpreter.java:66)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:741)
at hudson.model.Build$BuildExecution.build(Build.java:206)
at hudson.model.Build$BuildExecution.doRun(Build.java:163)
at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:504)
at hudson.model.Run.execute(Run.java:1818)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at hudson.model.ResourceController.execute(ResourceController.java:97)
at hudson.model.Executor.run(Executor.java:429)

Aug 01, 2019 9:35:02 AM jenkins.slaves.DefaultJnlpSlaveReceiver channelClosed
INFO: IOHub#1: Worker[channel:java.nio.channels.SocketChannel[connected local=/192.168.75.8:45607 remote=192.168.75.198/192.168.75.198:52076]] / Computer.threadPoolForRemoting 34 for R-Test-ST-Win7-64B-EN-Rhap-Agent2 terminated: java.nio.channels.ClosedChannelException