TCP: deadlock when loopback=true -------------------------------- Key: JGRP-496 URL: http://jira.jboss.com/jira/browse/JGRP-496 Project: JGroups Issue Type: Bug Reporter: Bela Ban Assigned To: Bela Ban Fix For: 2.5 Found one Java-level deadlock: ============================= "ConnectionTable.Connection.Receiver [10.68.28.33:7800 - 10.68.0.33:41796]": waiting to lock monitor 0x080ca6dc (object 0xdec9a0c8, a org.jgroups.stack.NakReceiverWindow), which is held by "Incoming Thread,perf,10.68.28.33:7800" "Incoming Thread,perf,10.68.28.33:7800": waiting to lock monitor 0x080ca3dc (object 0xdeb9f9e8, a java.lang.Object), which is held by "ConnectionTable.Connection.Receiver [10.68.28.33:7800 - 10.68.0.33:41796]" Java stack information for the threads listed above: =================================================== "ConnectionTable.Connection.Receiver [10.68.28.33:7800 - 10.68.0.33:41796]": at org.jgroups.protocols.pbcast.NAKACK.handleMessage(NAKACK.java:714) - waiting to lock <0xdec9a0c8> (a org.jgroups.stack.NakReceiverWindow) at org.jgroups.protocols.pbcast.NAKACK.up(NAKACK.java:549) at org.jgroups.protocols.pbcast.NAKACK.handleXmitRsp(NAKACK.java:962) at org.jgroups.protocols.pbcast.NAKACK.up(NAKACK.java:565) at org.jgroups.protocols.BARRIER.up(BARRIER.java:119) at org.jgroups.protocols.VERIFY_SUSPECT.up(VERIFY_SUSPECT.java:154) at org.jgroups.protocols.FD.up(FD.java:328) at org.jgroups.protocols.FD_SOCK.up(FD_SOCK.java:301) at org.jgroups.protocols.MERGE2.up(MERGE2.java:145) at org.jgroups.protocols.Discovery.up(Discovery.java:224) at org.jgroups.protocols.MPING.up(MPING.java:151) at org.jgroups.protocols.TP$IncomingPacket.handleMyMessage(TP.java:1536) at org.jgroups.protocols.TP$IncomingPacket.run(TP.java:1485) at java.util.concurrent.ThreadPoolExecutor$CallerRunsPolicy.rejectedExecution(ThreadPoolExecutor.java:1455) at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:384) at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:867) at org.jgroups.protocols.TP.dispatchToThreadPool(TP.java:1050) at org.jgroups.protocols.TP.receive(TP.java:1021) at org.jgroups.protocols.BasicTCP.receive(BasicTCP.java:233) at org.jgroups.blocks.BasicConnectionTable.receive(BasicConnectionTable.java:163) - locked <0xdeb9f9e8> (a java.lang.Object) at org.jgroups.blocks.BasicConnectionTable$Connection.run(BasicConnectionTable.java:593) at java.lang.Thread.run(Thread.java:595) "Incoming Thread,perf,10.68.28.33:7800": at org.jgroups.blocks.BasicConnectionTable.receive(BasicConnectionTable.java:163) - waiting to lock <0xdeb9f9e8> (a java.lang.Object) at org.jgroups.blocks.BasicConnectionTable.send(BasicConnectionTable.java:230) at org.jgroups.protocols.TCP.send(TCP.java:54) at org.jgroups.protocols.BasicTCP.sendToSingleMember(BasicTCP.java:194) at org.jgroups.protocols.BasicTCP.sendToAllMembers(BasicTCP.java:179) at org.jgroups.protocols.TP.doSend(TP.java:1189) at org.jgroups.protocols.TP.send(TP.java:1179) at org.jgroups.protocols.TP.down(TP.java:953) at org.jgroups.protocols.Discovery.down(Discovery.java:325) at org.jgroups.protocols.MERGE2.down(MERGE2.java:184) at org.jgroups.protocols.FD_SOCK.down(FD_SOCK.java:406) at org.jgroups.protocols.FD.down(FD.java:363) at org.jgroups.stack.Protocol.down(Protocol.java:252) at org.jgroups.protocols.BARRIER.down(BARRIER.java:94) at org.jgroups.protocols.pbcast.NAKACK.send(NAKACK.java:651) at org.jgroups.protocols.pbcast.NAKACK.down(NAKACK.java:441) at org.jgroups.protocols.pbcast.STABLE.sendStableMessage(STABLE.java:628) at org.jgroups.protocols.pbcast.STABLE.handleRegularMessage(STABLE.java:281) at org.jgroups.protocols.pbcast.STABLE.up(STABLE.java:223) at org.jgroups.protocols.pbcast.NAKACK.handleMessage(NAKACK.java:723) - locked <0xdec9a0c8> (a org.jgroups.stack.NakReceiverWindow) at org.jgroups.protocols.pbcast.NAKACK.up(NAKACK.java:549) at org.jgroups.protocols.pbcast.NAKACK.handleXmitRsp(NAKACK.java:962) at org.jgroups.protocols.pbcast.NAKACK.up(NAKACK.java:565) at org.jgroups.protocols.BARRIER.up(BARRIER.java:119) at org.jgroups.protocols.VERIFY_SUSPECT.up(VERIFY_SUSPECT.java:154) at org.jgroups.protocols.FD.up(FD.java:328) at org.jgroups.protocols.FD_SOCK.up(FD_SOCK.java:301) at org.jgroups.protocols.MERGE2.up(MERGE2.java:145) at org.jgroups.protocols.Discovery.up(Discovery.java:224) at org.jgroups.protocols.MPING.up(MPING.java:151) at org.jgroups.protocols.TP$IncomingPacket.handleMyMessage(TP.java:1536) at org.jgroups.protocols.TP$IncomingPacket.run(TP.java:1485) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675) at java.lang.Thread.run(Thread.java:595) Found 1 deadlock. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira