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  1. JDK
  2. JDK-8275839

Socket Datagram Full thread dump OpenJDK 64-Bit Server VM 17+35-2724

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      ADDITIONAL SYSTEM INFORMATION :
      Linux Fedora 5.14.12-100.fc33.x86_64
      Java 17+35-2724

      A DESCRIPTION OF THE PROBLEM :
      Simple UDP Server on openjdk 17 do not have the same behavior on older openjdk version (Tested with openjdk 16 and 11)

      REGRESSION : Last worked in version 16

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      Run the provided code

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      Application should wait until receiving data and not producing a full thread dump
      ACTUAL -
      /home/.jdks/openjdk-17/bin/java -javaagent:/home/.local/share/JetBrains/Toolbox/apps/IDEA-U/ch-0/212.5457.46/lib/idea_rt.jar=42277:/home/.local/share/JetBrains/Toolbox/apps/IDEA-U/ch-0/212.5457.46/bin -Dfile.encoding=UTF-8 -classpath/classes UDPServer
      Java : 17+35-2724
      2021-10-21 13:52:15
      Full thread dump OpenJDK 64-Bit Server VM (17+35-2724 mixed mode, sharing):

      Threads class SMR info:
      _java_thread_list=0x00007f2b64001f70, length=13, elements={
      0x00007f2bb8025870, 0x00007f2bb810b9e0, 0x00007f2bb810cdc0, 0x00007f2bb8112140,
      0x00007f2bb81134f0, 0x00007f2bb8114900, 0x00007f2bb81162b0, 0x00007f2bb81177e0,
      0x00007f2bb8118c50, 0x00007f2bb8124110, 0x00007f2bb81b8a50, 0x00007f2bb81ba3e0,
      0x00007f2b64000fe0
      }

      "main" #1 prio=5 os_prio=0 cpu=97,80ms elapsed=6,08s tid=0x00007f2bb8025870 nid=0x3852 runnable [0x00007f2bbd8ef000]
         java.lang.Thread.State: RUNNABLE
      at sun.nio.ch.DatagramChannelImpl.receive0(java.base@17/Native Method)
      at sun.nio.ch.DatagramChannelImpl.receiveIntoNativeBuffer(java.base@17/DatagramChannelImpl.java:750)
      at sun.nio.ch.DatagramChannelImpl.receive(java.base@17/DatagramChannelImpl.java:728)
      at sun.nio.ch.DatagramChannelImpl.trustedBlockingReceive(java.base@17/DatagramChannelImpl.java:666)
      at sun.nio.ch.DatagramChannelImpl.blockingReceive(java.base@17/DatagramChannelImpl.java:635)
      at sun.nio.ch.DatagramSocketAdaptor.receive(java.base@17/DatagramSocketAdaptor.java:240)
      at java.net.DatagramSocket.receive(java.base@17/DatagramSocket.java:700)
      at UDPServer.main(UDPServer.java:14)

      "Reference Handler" #2 daemon prio=10 os_prio=0 cpu=0,14ms elapsed=6,07s tid=0x00007f2bb810b9e0 nid=0x385a waiting on condition [0x00007f2b9ca1e000]
         java.lang.Thread.State: RUNNABLE
      at java.lang.ref.Reference.waitForReferencePendingList(java.base@17/Native Method)
      at java.lang.ref.Reference.processPendingReferences(java.base@17/Reference.java:253)
      at java.lang.ref.Reference$ReferenceHandler.run(java.base@17/Reference.java:215)

      "Finalizer" #3 daemon prio=8 os_prio=0 cpu=0,36ms elapsed=6,07s tid=0x00007f2bb810cdc0 nid=0x385b in Object.wait() [0x00007f2b9c91d000]
         java.lang.Thread.State: WAITING (on object monitor)
      at java.lang.Object.wait(java.base@17/Native Method)
      - waiting on <0x000000008bb02f30> (a java.lang.ref.ReferenceQueue$Lock)
      at java.lang.ref.ReferenceQueue.remove(java.base@17/ReferenceQueue.java:155)
      - locked <0x000000008bb02f30> (a java.lang.ref.ReferenceQueue$Lock)
      at java.lang.ref.ReferenceQueue.remove(java.base@17/ReferenceQueue.java:176)
      at java.lang.ref.Finalizer$FinalizerThread.run(java.base@17/Finalizer.java:172)

      "Signal Dispatcher" #4 daemon prio=9 os_prio=0 cpu=0,43ms elapsed=6,06s tid=0x00007f2bb8112140 nid=0x385e waiting on condition [0x0000000000000000]
         java.lang.Thread.State: RUNNABLE

      "Service Thread" #5 daemon prio=9 os_prio=0 cpu=0,05ms elapsed=6,06s tid=0x00007f2bb81134f0 nid=0x385f runnable [0x0000000000000000]
         java.lang.Thread.State: RUNNABLE

      "Monitor Deflation Thread" #6 daemon prio=9 os_prio=0 cpu=0,20ms elapsed=6,06s tid=0x00007f2bb8114900 nid=0x3860 runnable [0x0000000000000000]
         java.lang.Thread.State: RUNNABLE

      "C2 CompilerThread0" #7 daemon prio=9 os_prio=0 cpu=20,25ms elapsed=6,06s tid=0x00007f2bb81162b0 nid=0x3861 waiting on condition [0x0000000000000000]
         java.lang.Thread.State: RUNNABLE
         No compile task

      "C1 CompilerThread0" #9 daemon prio=9 os_prio=0 cpu=41,62ms elapsed=6,06s tid=0x00007f2bb81177e0 nid=0x3862 waiting on condition [0x0000000000000000]
         java.lang.Thread.State: RUNNABLE
         No compile task

      "Sweeper thread" #10 daemon prio=9 os_prio=0 cpu=0,11ms elapsed=6,06s tid=0x00007f2bb8118c50 nid=0x3863 runnable [0x0000000000000000]
         java.lang.Thread.State: RUNNABLE

      "Common-Cleaner" #11 daemon prio=8 os_prio=0 cpu=0,17ms elapsed=6,01s tid=0x00007f2bb8124110 nid=0x3864 in Object.wait() [0x00007f2b9c216000]
         java.lang.Thread.State: TIMED_WAITING (on object monitor)
      at java.lang.Object.wait(java.base@17/Native Method)
      - waiting on <0x000000008bb41d68> (a java.lang.ref.ReferenceQueue$Lock)
      at java.lang.ref.ReferenceQueue.remove(java.base@17/ReferenceQueue.java:155)
      - locked <0x000000008bb41d68> (a java.lang.ref.ReferenceQueue$Lock)
      at jdk.internal.ref.CleanerImpl.run(java.base@17/CleanerImpl.java:140)
      at java.lang.Thread.run(java.base@17/Thread.java:833)
      at jdk.internal.misc.InnocuousThread.run(java.base@17/InnocuousThread.java:162)

      "Monitor Ctrl-Break" #12 daemon prio=5 os_prio=0 cpu=16,68ms elapsed=5,96s tid=0x00007f2bb81b8a50 nid=0x3867 runnable [0x00007f2b9c115000]
         java.lang.Thread.State: RUNNABLE
      at sun.nio.ch.SocketDispatcher.read0(java.base@17/Native Method)
      at sun.nio.ch.SocketDispatcher.read(java.base@17/SocketDispatcher.java:47)
      at sun.nio.ch.NioSocketImpl.tryRead(java.base@17/NioSocketImpl.java:261)
      at sun.nio.ch.NioSocketImpl.implRead(java.base@17/NioSocketImpl.java:312)
      at sun.nio.ch.NioSocketImpl.read(java.base@17/NioSocketImpl.java:350)
      at sun.nio.ch.NioSocketImpl$1.read(java.base@17/NioSocketImpl.java:803)
      at java.net.Socket$SocketInputStream.read(java.base@17/Socket.java:966)
      at sun.nio.cs.StreamDecoder.readBytes(java.base@17/StreamDecoder.java:270)
      at sun.nio.cs.StreamDecoder.implRead(java.base@17/StreamDecoder.java:313)
      at sun.nio.cs.StreamDecoder.read(java.base@17/StreamDecoder.java:188)
      - locked <0x000000008ba9e100> (a java.io.InputStreamReader)
      at java.io.InputStreamReader.read(java.base@17/InputStreamReader.java:177)
      at java.io.BufferedReader.fill(java.base@17/BufferedReader.java:162)
      at java.io.BufferedReader.readLine(java.base@17/BufferedReader.java:329)
      - locked <0x000000008ba9e100> (a java.io.InputStreamReader)
      at java.io.BufferedReader.readLine(java.base@17/BufferedReader.java:396)
      at com.intellij.rt.execution.application.AppMainV2$1.run(AppMainV2.java:49)

      "Notification Thread" #13 daemon prio=9 os_prio=0 cpu=0,07ms elapsed=5,96s tid=0x00007f2bb81ba3e0 nid=0x3868 runnable [0x0000000000000000]
         java.lang.Thread.State: RUNNABLE

      "Attach Listener" #14 daemon prio=9 os_prio=0 cpu=0,13ms elapsed=4,95s tid=0x00007f2b64000fe0 nid=0x3872 runnable [0x0000000000000000]
         java.lang.Thread.State: RUNNABLE

      "VM Thread" os_prio=0 cpu=2,00ms elapsed=6,07s tid=0x00007f2bb81079f0 nid=0x3858 runnable

      "GC Thread#0" os_prio=0 cpu=0,16ms elapsed=6,08s tid=0x00007f2bb8063be0 nid=0x3853 runnable

      "G1 Main Marker" os_prio=0 cpu=0,06ms elapsed=6,08s tid=0x00007f2bb8074a00 nid=0x3854 runnable

      "G1 Conc#0" os_prio=0 cpu=0,03ms elapsed=6,08s tid=0x00007f2bb8075960 nid=0x3855 runnable

      "G1 Refine#0" os_prio=0 cpu=0,04ms elapsed=6,08s tid=0x00007f2bb80db590 nid=0x3856 runnable

      "G1 Service" os_prio=0 cpu=1,06ms elapsed=6,08s tid=0x00007f2bb80dc480 nid=0x3857 runnable

      "VM Periodic Task Thread" os_prio=0 cpu=3,30ms elapsed=5,96s tid=0x00007f2bb8027910 nid=0x3869 waiting on condition

      JNI global refs: 14, weak refs: 0

      Heap
       garbage-first heap total 131072K, used 3042K [0x0000000083e00000, 0x0000000100000000)
        region size 1024K, 3 young (3072K), 0 survivors (0K)
       Metaspace used 949K, committed 1152K, reserved 1056768K
        class space used 84K, committed 192K, reserved 1048576K


      ---------- BEGIN SOURCE ----------
      class UDPServer
      {
          public static void main(String args[]) throws Exception
          {
              System.out.println("Java : " + Runtime.version().toString());
              DatagramSocket serverSocket = new DatagramSocket(7053);
              byte[] receiveData = new byte[1024];
              DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);
              serverSocket.receive(receivePacket);
          }
      }

      ---------- END SOURCE ----------

      FREQUENCY : always


            michaelm Michael McMahon
            webbuggrp Webbug Group
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              Created:
              Updated: