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Issue 1162 attachment: deadlock.txt (14.9 KB)

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- locked <0x00000000ff10d7a8> (a sun.nio.ch.Util$2)
- locked <0x00000000ff10d798> (a java.util.Collections$UnmodifiableSet)
- locked <0x00000000ff10d2a8> (a sun.nio.ch.EPollSelectorImpl)
at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:80)
at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:84)
at org.apache.mina.transport.socket.nio.NioSocketAcceptor.select(NioSocketAcceptor.java:285)
at org.apache.mina.core.polling.AbstractPollingIoAcceptor$Acceptor.run(AbstractPollingIoAcceptor.java:401)
at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)

"Store diff_intraline Spool Thread" daemon prio=10 tid=0x00007f264c502000 nid=0x6ee3 waiting on condition [0x00007f26514aa000]
java.lang.Thread.State: TIMED_WAITING (sleeping)
at java.lang.Thread.sleep(Native Method)
at net.sf.ehcache.store.DiskStore.spoolAndExpiryThreadMain(DiskStore.java:634)
at net.sf.ehcache.store.DiskStore.access$900(DiskStore.java:68)
at net.sf.ehcache.store.DiskStore$SpoolAndExpiryThread.run(DiskStore.java:1110)

"Store web_sessions Spool Thread" daemon prio=10 tid=0x00007f264c4fd000 nid=0x6ee2 waiting on condition [0x00007f26515ab000]
java.lang.Thread.State: TIMED_WAITING (sleeping)
at java.lang.Thread.sleep(Native Method)
at net.sf.ehcache.store.DiskStore.spoolAndExpiryThreadMain(DiskStore.java:634)
at net.sf.ehcache.store.DiskStore.access$900(DiskStore.java:68)
at net.sf.ehcache.store.DiskStore$SpoolAndExpiryThread.run(DiskStore.java:1110)

"Store diff Spool Thread" daemon prio=10 tid=0x00007f264c537000 nid=0x6ee1 waiting on condition [0x00007f26516ac000]
java.lang.Thread.State: TIMED_WAITING (sleeping)
at java.lang.Thread.sleep(Native Method)
at net.sf.ehcache.store.DiskStore.spoolAndExpiryThreadMain(DiskStore.java:634)
at net.sf.ehcache.store.DiskStore.access$900(DiskStore.java:68)
at net.sf.ehcache.store.DiskStore$SpoolAndExpiryThread.run(DiskStore.java:1110)

"Store git_tags Spool Thread" daemon prio=10 tid=0x00007f264c3f8800 nid=0x6ee0 waiting on condition [0x00007f26517ad000]
java.lang.Thread.State: TIMED_WAITING (sleeping)
at java.lang.Thread.sleep(Native Method)
at net.sf.ehcache.store.DiskStore.spoolAndExpiryThreadMain(DiskStore.java:634)
at net.sf.ehcache.store.DiskStore.access$900(DiskStore.java:68)
at net.sf.ehcache.store.DiskStore$SpoolAndExpiryThread.run(DiskStore.java:1110)

"net.sf.ehcache.CacheManager@77a6686" daemon prio=10 tid=0x00007f264c344000 nid=0x6edf in Object.wait() [0x00007f26518ae000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00000000ff184f10> (a java.util.TaskQueue)
at java.util.TimerThread.mainLoop(Timer.java:509)
- locked <0x00000000ff184f10> (a java.util.TaskQueue)
at java.util.TimerThread.run(Timer.java:462)

"WorkQueue-1" prio=10 tid=0x00007f264c453000 nid=0x6ede waiting on condition [0x00007f26519af000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00000000ff109708> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:198)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2025)
at java.util.concurrent.DelayQueue.take(DelayQueue.java:164)
at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:609)
at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:602)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:662)

"AsyncAppender-Dispatcher-Thread-9" daemon prio=10 tid=0x00007f264c445000 nid=0x6edd in Object.wait() [0x00007f2651ab0000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00000000ff1002f8> (a java.util.ArrayList)
at java.lang.Object.wait(Object.java:485)
at org.apache.log4j.AsyncAppender$Dispatcher.run(AsyncAppender.java:548)
- locked <0x00000000ff1002f8> (a java.util.ArrayList)
at java.lang.Thread.run(Thread.java:662)

"AsyncAppender-Dispatcher-Thread-8" daemon prio=10 tid=0x00007f264c53e800 nid=0x6ed3 in Object.wait() [0x00007f2651bb1000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00000000f0a4ec00> (a java.util.ArrayList)
at java.lang.Object.wait(Object.java:485)
at org.apache.log4j.AsyncAppender$Dispatcher.run(AsyncAppender.java:548)
- locked <0x00000000f0a4ec00> (a java.util.ArrayList)
at java.lang.Thread.run(Thread.java:662)

"pool-1-thread-1" prio=10 tid=0x00007f264c2b4800 nid=0x6ed2 waiting on condition [0x00007f2651cb2000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00000000f0ae3860> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:198)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2025)
at java.util.concurrent.DelayQueue.take(DelayQueue.java:164)
at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:609)
at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:602)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:662)

"H2 Log Writer REVIEWDB" daemon prio=10 tid=0x00007f264c484800 nid=0x6ed1 waiting on condition [0x00007f2651dba000]
java.lang.Thread.State: TIMED_WAITING (sleeping)
at java.lang.Thread.sleep(Native Method)
at org.h2.store.WriterThread.run(WriterThread.java:102)
at java.lang.Thread.run(Thread.java:662)

"H2 File Lock Watchdog /home/CORPUSERS/23054798/gerrit_repos/gerrit_all_refs/test_site/db/ReviewDB.lock.db" daemon prio=10 tid=0x00007f264c402000 nid=0x6ed0 waiting on condition [0x00007f2651ebb000]
java.lang.Thread.State: TIMED_WAITING (sleeping)
at java.lang.Thread.sleep(Native Method)
at org.h2.store.FileLock.run(FileLock.java:491)
at java.lang.Thread.run(Thread.java:662)

"Low Memory Detector" daemon prio=10 tid=0x000000004031a000 nid=0x6eca runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE

"C2 CompilerThread1" daemon prio=10 tid=0x0000000040317800 nid=0x6ec9 waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE

"C2 CompilerThread0" daemon prio=10 tid=0x0000000040312800 nid=0x6ec8 waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE

"Signal Dispatcher" daemon prio=10 tid=0x0000000040310000 nid=0x6ec7 runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE

"Finalizer" daemon prio=10 tid=0x00000000402f3000 nid=0x6ec6 in Object.wait() [0x00007f2652a35000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00000000f00e2b70> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:118)
- locked <0x00000000f00e2b70> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:134)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159)

"Reference Handler" daemon prio=10 tid=0x00000000402eb800 nid=0x6ec5 in Object.wait() [0x00007f2652b36000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00000000f00e2b30> (a java.lang.ref.Reference$Lock)
at java.lang.Object.wait(Object.java:485)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:116)
- locked <0x00000000f00e2b30> (a java.lang.ref.Reference$Lock)

"main" prio=10 tid=0x000000004028b000 nid=0x6ec1 in Object.wait() [0x00007f26570e6000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00000000ff24e1e8> (a com.google.gerrit.pgm.util.RuntimeShutdown$ShutdownCallback)
at java.lang.Object.wait(Object.java:485)
at com.google.gerrit.pgm.util.RuntimeShutdown$ShutdownCallback.waitForShutdown(RuntimeShutdown.java:104)
- locked <0x00000000ff24e1e8> (a com.google.gerrit.pgm.util.RuntimeShutdown$ShutdownCallback)
at com.google.gerrit.pgm.util.RuntimeShutdown.waitFor(RuntimeShutdown.java:39)
at com.google.gerrit.pgm.Daemon.run(Daemon.java:169)
at com.google.gerrit.pgm.util.AbstractProgram.main(AbstractProgram.java:76)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.google.gerrit.launcher.GerritLauncher.invokeProgram(GerritLauncher.java:165)
at com.google.gerrit.launcher.GerritLauncher.mainImpl(GerritLauncher.java:89)
at com.google.gerrit.launcher.GerritLauncher.main(GerritLauncher.java:47)
at Main.main(Main.java:25)

"VM Thread" prio=10 tid=0x00000000402e5000 nid=0x6ec4 runnable

"GC task thread#0 (ParallelGC)" prio=10 tid=0x000000004029e000 nid=0x6ec2 runnable

"GC task thread#1 (ParallelGC)" prio=10 tid=0x00000000402a0000 nid=0x6ec3 runnable

"VM Periodic Task Thread" prio=10 tid=0x0000000040325000 nid=0x6ecb waiting on condition

JNI global references: 1437


Found one Java-level deadlock:
=============================
"SshCommandStart-1":
waiting to lock monitor 0x00000000402f0128 (object 0x00000000fae83070, a java.lang.Object),
which is held by "NioProcessor-2"
"NioProcessor-2":
waiting to lock monitor 0x0000000040b36340 (object 0x00000000faeb5428, a com.google.gerrit.sshd.CommandFactoryProvider$Trampoline),
which is held by "SshCommandStart-1"

Java stack information for the threads listed above:
===================================================
"SshCommandStart-1":
at org.apache.sshd.common.future.DefaultSshFuture.addListener(DefaultSshFuture.java:274)
- waiting to lock <0x00000000fae83070> (a java.lang.Object)
at org.apache.sshd.server.channel.ChannelSession.close(ChannelSession.java:172)
at org.apache.sshd.server.channel.ChannelSession.closeShell(ChannelSession.java:542)
at org.apache.sshd.server.channel.ChannelSession$2.onExit(ChannelSession.java:454)
at com.google.gerrit.sshd.CommandFactoryProvider$Trampoline$2.onExit(CommandFactoryProvider.java:147)
at com.google.gerrit.sshd.BaseCommand.onExit(BaseCommand.java:273)
at com.google.gerrit.sshd.DispatchCommand.start(DispatchCommand.java:106)
at com.google.gerrit.sshd.DispatchCommand.start(DispatchCommand.java:97)
at com.google.gerrit.sshd.CommandFactoryProvider$Trampoline.onStart(CommandFactoryProvider.java:151)
- locked <0x00000000faeb5428> (a com.google.gerrit.sshd.CommandFactoryProvider$Trampoline)
at com.google.gerrit.sshd.CommandFactoryProvider$Trampoline.access$000(CommandFactoryProvider.java:72)
at com.google.gerrit.sshd.CommandFactoryProvider$Trampoline$1.run(CommandFactoryProvider.java:115)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206)
at com.google.gerrit.server.git.WorkQueue$Task.run(WorkQueue.java:324)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
"NioProcessor-2":
at com.google.gerrit.sshd.CommandFactoryProvider$Trampoline.destroy(CommandFactoryProvider.java:186)
- waiting to lock <0x00000000faeb5428> (a com.google.gerrit.sshd.CommandFactoryProvider$Trampoline)
at org.apache.sshd.server.channel.ChannelSession$1.operationComplete(ChannelSession.java:175)
at org.apache.sshd.common.future.DefaultSshFuture.notifyListener(DefaultSshFuture.java:339)
at org.apache.sshd.common.future.DefaultSshFuture.notifyListeners(DefaultSshFuture.java:324)
at org.apache.sshd.common.future.DefaultSshFuture.setValue(DefaultSshFuture.java:252)
at org.apache.sshd.common.future.DefaultCloseFuture.setClosed(DefaultCloseFuture.java:44)
at org.apache.sshd.common.channel.AbstractChannel.handleClose(AbstractChannel.java:111)
- locked <0x00000000fae83070> (a java.lang.Object)
at org.apache.sshd.common.session.AbstractSession.channelClose(AbstractSession.java:979)
at org.apache.sshd.server.session.ServerSession.handleMessage(ServerSession.java:227)
at org.apache.sshd.common.session.AbstractSession.decode(AbstractSession.java:523)
at org.apache.sshd.common.session.AbstractSession.messageReceived(AbstractSession.java:226)
- locked <0x00000000ff18e6b8> (a java.lang.Object)
at org.apache.sshd.common.AbstractSessionIoHandler.messageReceived(AbstractSessionIoHandler.java:58)
at org.apache.mina.core.filterchain.DefaultIoFilterChain$TailFilter.messageReceived(DefaultIoFilterChain.java:716)
at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434)
at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:46)
at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:796)
at org.apache.mina.core.filterchain.IoFilterAdapter.messageReceived(IoFilterAdapter.java:119)
at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434)
at org.apache.mina.core.filterchain.DefaultIoFilterChain.fireMessageReceived(DefaultIoFilterChain.java:426)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:693)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:646)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:635)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.access$400(AbstractPollingIoProcessor.java:67)
at org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:1079)
at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)

Found 1 deadlock.


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