Watching Server Crash

Crash occurred - appears to be triggered by a watchdog process of some type:

Minecraft Crash Report ----
// Why did you do that?
 
Time: 2023-08-23 06:53:07
Description: Watching Server
 
java.lang.Error: Watchdog
at java.base@17.0.7/jdk.internal.misc.Unsafe.park(Native Method)
at java.base@17.0.7/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:252)
at bcn.bq(SourceFile:151)
at bcn.c(SourceFile:141)
at net.minecraft.server.MinecraftServer.p_(SourceFile:743)
at net.minecraft.server.MinecraftServer.w(SourceFile:675)
at net.minecraft.server.MinecraftServer.a(SourceFile:265)
at net.minecraft.server.MinecraftServer$$Lambda$4605/0x00000008019391d8.run(Unknown Source)
at java.base@17.0.7/java.lang.Thread.run(Thread.java:833)
 
 
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
 
– Head –
Thread: Server Watchdog
Stacktrace:
at java.base@17.0.7/jdk.internal.misc.Unsafe.park(Native Method)
at java.base@17.0.7/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:252)
at bcn.bq(SourceFile:151)
at bcn.c(SourceFile:141)
at net.minecraft.server.MinecraftServer.p_(SourceFile:743)
at net.minecraft.server.MinecraftServer.w(SourceFile:675)
at net.minecraft.server.MinecraftServer.a(SourceFile:265)
 
– Thread Dump –
Details:
Threads: "Reference Handler" daemon prio=10 Id=2 RUNNABLE
at java.base@17.0.7/java.lang.ref.Reference.waitForReferencePendingList(Native Method)
at java.base@17.0.7/java.lang.ref.Reference.processPendingReferences(Reference.java:253)
at java.base@17.0.7/java.lang.ref.Reference$ReferenceHandler.run(Reference.java:215)
 
 
"Finalizer" daemon prio=8 Id=3 WAITING on java.lang.ref.ReferenceQueue$Lock@48ac31a8
at java.base@17.0.7/java.lang.Object.wait(Native Method)

•  waiting on java.lang.ref.ReferenceQueue$Lock@48ac31a8
  at java.base@17.0.7/java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:155)
  at java.base@17.0.7/java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:176)
  at java.base@17.0.7/java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:172)
   
   
  "Signal Dispatcher" daemon prio=9 Id=4 RUNNABLE
   
   
  "Notification Thread" daemon prio=9 Id=10 RUNNABLE
   
   
  "Common-Cleaner" daemon prio=8 Id=11 TIMED_WAITING on java.lang.ref.ReferenceQueue$Lock@466bd6cd
  at java.base@17.0.7/java.lang.Object.wait(Native Method)

•  waiting on java.lang.ref.ReferenceQueue$Lock@466bd6cd
  at java.base@17.0.7/java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:155)
  at java.base@17.0.7/jdk.internal.ref.CleanerImpl.run(CleanerImpl.java:140)
  at java.base@17.0.7/java.lang.Thread.run(Thread.java:833)
  at java.base@17.0.7/jdk.internal.misc.InnocuousThread.run(InnocuousThread.java:162)
   
   
  "DestroyJavaVM" prio=5 Id=13 RUNNABLE
   
   
  "JNA Cleaner" daemon prio=5 Id=17 WAITING on java.lang.ref.ReferenceQueue$Lock@42545ad8
  at java.base@17.0.7/java.lang.Object.wait(Native Method)

•  waiting on java.lang.ref.ReferenceQueue$Lock@42545ad8
  at java.base@17.0.7/java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:155)
  at java.base@17.0.7/java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:176)
  at com.sun.jna.internal.Cleaner$1.run(Cleaner.java:58)
   
   
  "Timer hack thread" daemon prio=5 Id=18 TIMED_WAITING
  at java.base@17.0.7/java.lang.Thread.sleep(Native Method)
  at ac$9.run(SourceFile:839)
   
   
  "Yggdrasil Key Fetcher" daemon prio=5 Id=19 TIMED_WAITING on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@756dcf6
  at java.base@17.0.7/jdk.internal.misc.Unsafe.park(Native Method)

•  waiting on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@756dcf6
  at java.base@17.0.7/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:252)
  at java.base@17.0.7/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:1672)
  at java.base@17.0.7/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1182)
  at java.base@17.0.7/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899)
  at java.base@17.0.7/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1062)
  at java.base@17.0.7/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1122)
  at java.base@17.0.7/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
  ...
   
   
  "Server thread" prio=5 Id=23 TIMED_WAITING on java.lang.String@2ede8cc5
  at java.base@17.0.7/jdk.internal.misc.Unsafe.park(Native Method)

•  waiting on java.lang.String@2ede8cc5
  at java.base@17.0.7/java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:252)
  at bcn.bq(SourceFile:151)
  at bcn.c(SourceFile:141)
  at net.minecraft.server.MinecraftServer.p_(SourceFile:743)
  at net.minecraft.server.MinecraftServer.w(SourceFile:675)
  at net.minecraft.server.MinecraftServer.a(SourceFile:265)
  at net.minecraft.server.MinecraftServer$$Lambda$4605/0x00000008019391d8.run(Unknown Source)
  ...
   
   
  "Server console handler" daemon prio=5 Id=25 RUNNABLE (in native)
  at java.base@17.0.7/java.io.FileInputStream.readBytes(Native Method)
  at java.base@17.0.7/java.io.FileInputStream.read(FileInputStream.java:276)
  at java.base@17.0.7/java.io.BufferedInputStream.read1(BufferedInputStream.java:282)
  at java.base@17.0.7/java.io.BufferedInputStream.read(BufferedInputStream.java:343)

•  locked java.io.BufferedInputStream@361bfa6d
  at java.base@17.0.7/sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:270)
  at java.base@17.0.7/sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:313)
  at java.base@17.0.7/sun.nio.cs.StreamDecoder.read(StreamDecoder.java:188)

•  locked java.io.InputStreamReader@5679f4ec
  at java.base@17.0.7/java.io.InputStreamReader.read(InputStreamReader.java:177)
  ...
   
   
  "Netty Epoll Server IO #0" daemon prio=5 Id=26 RUNNABLE (in native)
  at io.netty.channel.epoll.Native.epollWait(Native Method)
  at io.netty.channel.epoll.Native.epollWait(Native.java:209)
  at io.netty.channel.epoll.Native.epollWait(Native.java:202)
  at io.netty.channel.epoll.EpollEventLoop.epollWaitNoTimerChange(EpollEventLoop.java:306)
  at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:363)
  at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
  at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
  at java.base@17.0.7/java.lang.Thread.run(Thread.java:833)
   
   
  "Server Watchdog" daemon prio=5 Id=30 RUNNABLE
  at java.management@17.0.7/sun.management.ThreadImpl.dumpThreads0(Native Method)
  at java.management@17.0.7/sun.management.ThreadImpl.dumpAllThreads(ThreadImpl.java:521)
  at java.management@17.0.7/sun.management.ThreadImpl.dumpAllThreads(ThreadImpl.java:509)
  at ahh.run(SourceFile:47)
  at java.base@17.0.7/java.lang.Thread.run(Thread.java:833)
   
   
  "Netty Epoll Server IO #1" daemon prio=5 Id=34 RUNNABLE (in native)
  at io.netty.channel.epoll.Native.epollWait(Native Method)
  at io.netty.channel.epoll.Native.epollWait(Native.java:209)
  at io.netty.channel.epoll.Native.epollWait(Native.java:202)
  at io.netty.channel.epoll.EpollEventLoop.epollWaitNoTimerChange(EpollEventLoop.java:306)
  at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:363)
  at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
  at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
  at java.base@17.0.7/java.lang.Thread.run(Thread.java:833)
   
   
  "Netty Epoll Server IO #2" daemon prio=5 Id=35 RUNNABLE (in native)
  at io.netty.channel.epoll.Native.epollWait(Native Method)
  at io.netty.channel.epoll.Native.epollWait(Native.java:209)
  at io.netty.channel.epoll.Native.epollWait(Native.java:202)
  at io.netty.channel.epoll.EpollEventLoop.epollWaitNoTimerChange(EpollEventLoop.java:306)
  at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:363)
  at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
  at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
  at java.base@17.0.7/java.lang.Thread.run(Thread.java:833)
   
   
  "Netty Epoll Server IO #3" daemon prio=5 Id=36 RUNNABLE (in native)
  at io.netty.channel.epoll.Native.epollWait(Native Method)
  at io.netty.channel.epoll.Native.epollWait(Native.java:209)
  at io.netty.channel.epoll.Native.epollWait(Native.java:202)
  at io.netty.channel.epoll.EpollEventLoop.epollWaitNoTimerChange(EpollEventLoop.java:306)
  at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:363)
  at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
  at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
  at java.base@17.0.7/java.lang.Thread.run(Thread.java:833)
   
   
   
  Stacktrace:
  at ahh.run(SourceFile:63)
  at java.base/java.lang.Thread.run(Thread.java:833)
   

  • Performance stats –
    Details:
    Random tick rate: 3
    Level stats: ResourceKey[minecraft:dimension / minecraft:overworld]: players: 0, entities: 100,100,77,529,529,0,0 [minecraft:cow:15,minecraft:pig:14,minecraft:sheep:12,minecraft:bat:9,minecraft:squid:7], block_entities: 56 [minecraft:mob_spawner:41,minecraft:furnace:8,minecraft:beehive:4,minecraft:sign:3], block_ticks: 0, fluid_ticks: 23, chunk_source: Chunks[S] W: 2209 E: 100,100,77,529,529,0,0,
    ResourceKey[minecraft:dimension / minecraft:the_end]: players: 0, entities: 0,0,0,0,0,0,0 [], block_entities: 0 [], block_ticks: 0, fluid_ticks: 0, chunk_source: Chunks[S] W: 0 E: 0,0,0,0,0,0,0,
    ResourceKey[minecraft:dimension / minecraft:the_nether]: players: 0, entities: 0,0,0,0,0,0,0 [], block_entities: 0 [], block_ticks: 0, fluid_ticks: 0, chunk_source: Chunks[S] W: 0 E: 0,0,0,0,0,0,0
     

  • System Details –
    Details:
    Minecraft Version: 1.20.1
    Minecraft Version ID: 1.20.1
    Operating System: Linux (amd64) version 5.10.0-25-cloud-amd64
    Java Version: 17.0.7, Debian
    Java VM Version: OpenJDK 64-Bit Server VM (mixed mode, sharing), Debian
    Memory: 877565728 bytes (836 MiB) / 3221225472 bytes (3072 MiB) up to 3221225472 bytes (3072 MiB)
    CPUs: 2
    Processor Vendor: GenuineIntel
    Processor Name: Intel(R) Xeon(R) CPU @ 2.20GHz
    Identifier: Intel64 Family 6 Model 79 Stepping 0
    Microarchitecture: Broadwell (Server)
    Frequency (GHz): 2.20
    Number of physical packages: 1
    Number of physical CPUs: 1
    Number of logical CPUs: 2
    Graphics card #0 name: Virtio SCSI
    Graphics card #0 vendor: Red Hat, Inc. (0x1af4)
    Graphics card #0 VRAM (MB): 0.00
    Graphics card #0 deviceId: 0x1004
    Graphics card #0 versionInfo: unknown
    Virtual memory max (MB): 1965.37
    Virtual memory used (MB): 3925.73
    Swap memory total (MB): 0.00
    Swap memory used (MB): 0.00
    JVM Flags: 2 total; -Xmx3G -Xms3G
    Server Running: true
    Player Count: 0 / 100; []
    Data Packs: vanilla
    Enabled Feature Flags: minecraft:vanilla
    World Generation: Stable
    Is Modded: Probably not. Server jar signature and brand is untouched
    Type: Dedicated Server (map_server.txt)