Marcel Šebek created WFLY-10000: ----------------------------------- Summary: Wildfly shutdown deadlock with active websocket session Key: WFLY-10000 URL: https://issues.jboss.org/browse/WFLY-10000 Project: WildFly Issue Type: Bug Components: Web Sockets Affects Versions: 12.0.0.Final Environment: Linux - debian stretch (stable), openjdk 8. Reporter: Marcel Šebek Assignee: Stuart Douglas Wildfly hangs during shutdown if a websocket session is active. @OnClose callback is called, but after that, wildfly hangs forever. Thread dump shows that two threads are in BLOCKED state: {noformat} "default task-7" #429 prio=5 os_prio=0 tid=0x00005609dcd78800 nid=0x4bf6 waiting for monitor entry [0x00007fadc61bd000] java.lang.Thread.State: BLOCKED (on object monitor) at io.undertow.websockets.jsr.ServerWebSocketContainer$10.run(ServerWebSocketContainer.java:892) - waiting to lock <0x00000000f5fad4e0> (a io.undertow.websockets.jsr.ServerWebSocketContainer) - locked <0x00000000f0f7edf8> (a io.undertow.websockets.jsr.ServerWebSocketContainer$10) at io.undertow.websockets.jsr.SessionContainer.removeOpenSession(SessionContainer.java:52) - locked <0x00000000f5fad5a0> (a io.undertow.websockets.jsr.ConfiguredServerEndpoint) at io.undertow.websockets.jsr.UndertowSession$2.run(UndertowSession.java:370) at io.undertow.websockets.jsr.OrderedExecutor$ExecutorTask.run(OrderedExecutor.java:67) at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35) at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1985) at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1487) at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1378) at java.lang.Thread.run(Thread.java:748) Locked ownable synchronizers: - None "ServerService Thread Pool -- 50" #82 prio=5 os_prio=0 tid=0x00005609d81f1000 nid=0x48e8 waiting for monitor entry [0x00007fade862d000] java.lang.Thread.State: BLOCKED (on object monitor) at java.lang.Object.wait(Native Method) at io.undertow.websockets.jsr.SessionContainer.awaitClose(SessionContainer.java:67) - locked <0x00000000f5fad5a0> (a io.undertow.websockets.jsr.ConfiguredServerEndpoint) at io.undertow.websockets.jsr.ServerWebSocketContainer.close(ServerWebSocketContainer.java:779) - locked <0x00000000f5fad4e0> (a io.undertow.websockets.jsr.ServerWebSocketContainer) at io.undertow.websockets.jsr.ServerWebSocketContainer.close(ServerWebSocketContainer.java:784) - locked <0x00000000f5fad4e0> (a io.undertow.websockets.jsr.ServerWebSocketContainer) at io.undertow.websockets.jsr.Bootstrap$WebSocketListener.contextDestroyed(Bootstrap.java:128) at io.undertow.servlet.core.ApplicationListeners.contextDestroyed(ApplicationListeners.java:202) at io.undertow.servlet.core.DeploymentImpl.destroy(DeploymentImpl.java:252) at io.undertow.servlet.core.DeploymentManagerImpl$4.call(DeploymentManagerImpl.java:663) at io.undertow.servlet.core.DeploymentManagerImpl$4.call(DeploymentManagerImpl.java:660) at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:42) at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43) at org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105) at org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction$$Lambda$1145/655479276.call(Unknown Source) at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1526) at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction$$Lambda$1146/915737155.call(Unknown Source) at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1526) at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction$$Lambda$1146/915737155.call(Unknown Source) at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1526) at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction$$Lambda$1146/915737155.call(Unknown Source) at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1526) at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction$$Lambda$1146/915737155.call(Unknown Source) at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1526) at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction$$Lambda$1146/915737155.call(Unknown Source) at io.undertow.servlet.core.DeploymentManagerImpl.undeploy(DeploymentManagerImpl.java:668) at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.stopContext(UndertowDeploymentService.java:139) at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$2.run(UndertowDeploymentService.java:117) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35) at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1985) at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1487) at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1378) at java.lang.Thread.run(Thread.java:748) at org.jboss.threads.JBossThread.run(JBossThread.java:485) Locked ownable synchronizers: - None {noformat} There may be some other necessary conditions necessary to reproduce the issue (specific wildfly configuration, some application setup). If the issue is not clear from the thread dump, I can create some small example reproducing the problem. -- This message was sent by Atlassian JIRA (v7.5.0#75005)