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  1. JDK
  2. JDK-8260238

Java or JavaFX application freezes after some time when using the WebView

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P4
    • Resolution: Cannot Reproduce
    • Affects Version/s: 8u271
    • Fix Version/s: None
    • Component/s: javafx
    • Subcomponent:
      web
    • CPU:
      x86_64
    • OS:
      windows_10

      Description

      ADDITIONAL SYSTEM INFORMATION :
      Reproduced with:
      * Oracle JRE 1.8.0_271 win 64
      * zulu8.50.0.53-ca-fx-jre8.0.275-win_x64

      A DESCRIPTION OF THE PROBLEM :
      The Java or JavaFX application that uses a WebView freezes and no longer responds to anything. It doesn't crash, it freezes. This happens randomly with very small apps as well as larger ones. We tried with a Java app embedding an JXPanel and a 100% JavaFX application. Both freeze.

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      Compile the attached application

      Run the app, browse, switch another application several times. Then leave it running. It will eventually freeze.


      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      The application should not freeze
      ACTUAL -
      The application eventually freezes.

      Once frozen, we forced a Windows full crash dump and inspected with Win10dbg. Here are the results:

      0:000> !locks

      CritSec ntdll!LdrpLoaderLock+0 at 00007ff89a31f4f8
      WaiterWoken No
      LockCount 1
      RecursionCount 1
      OwningThread 2d14
      EntryCount 0
      ContentionCount 1
      *** Locked

      Scanned 18 critical sections
      0:000> !cs -l
      -----------------------------------------
      DebugInfo = 0x00007ff89a31f978
      Critical section = 0x00007ff89a31f4f8 (ntdll!LdrpLoaderLock+0x0)
      LOCKED
      LockCount = 0x1
      WaiterWoken = No
      OwningThread = 0x0000000000002d14
      RecursionCount = 0x1
      LockSemaphore = 0xFFFFFFFF
      SpinCount = 0x0000000004000000


      0:000> ~
      . 0 Id: 29a8.416c Suspend: 0 Teb: 00000000`0092f000 Unfrozen
         1 Id: 29a8.1258 Suspend: 0 Teb: 00000000`00937000 Unfrozen
         2 Id: 29a8.3b8c Suspend: 0 Teb: 00000000`00939000 Unfrozen
         3 Id: 29a8.3598 Suspend: 0 Teb: 00000000`0093b000 Unfrozen
         4 Id: 29a8.41e0 Suspend: 0 Teb: 00000000`0093d000 Unfrozen
         5 Id: 29a8.4270 Suspend: 0 Teb: 00000000`0093f000 Unfrozen
         6 Id: 29a8.3e38 Suspend: 0 Teb: 00000000`00941000 Unfrozen
         7 Id: 29a8.2f4c Suspend: 0 Teb: 00000000`00943000 Unfrozen
         8 Id: 29a8.3aa4 Suspend: 0 Teb: 00000000`00945000 Unfrozen
         9 Id: 29a8.1874 Suspend: 0 Teb: 00000000`00947000 Unfrozen
        10 Id: 29a8.4354 Suspend: 0 Teb: 00000000`00949000 Unfrozen
        11 Id: 29a8.9ec Suspend: 0 Teb: 00000000`0094b000 Unfrozen
        12 Id: 29a8.3f8c Suspend: 0 Teb: 00000000`0094d000 Unfrozen
        13 Id: 29a8.2874 Suspend: 0 Teb: 00000000`0094f000 Unfrozen
        14 Id: 29a8.1184 Suspend: 0 Teb: 00000000`00951000 Unfrozen
        15 Id: 29a8.2e84 Suspend: 0 Teb: 00000000`00953000 Unfrozen
        16 Id: 29a8.dcc Suspend: 0 Teb: 00000000`00955000 Unfrozen
        17 Id: 29a8.3f48 Suspend: 0 Teb: 00000000`00957000 Unfrozen
        18 Id: 29a8.1df0 Suspend: 0 Teb: 00000000`00959000 Unfrozen
        19 Id: 29a8.42e4 Suspend: 0 Teb: 00000000`0095b000 Unfrozen
        20 Id: 29a8.2c60 Suspend: 0 Teb: 00000000`0095d000 Unfrozen
        21 Id: 29a8.3724 Suspend: 0 Teb: 00000000`0095f000 Unfrozen
        22 Id: 29a8.1fd0 Suspend: 0 Teb: 00000000`00961000 Unfrozen
        23 Id: 29a8.4178 Suspend: 0 Teb: 00000000`00963000 Unfrozen
        24 Id: 29a8.37f8 Suspend: 0 Teb: 00000000`00965000 Unfrozen
        25 Id: 29a8.2984 Suspend: 0 Teb: 00000000`00967000 Unfrozen
        26 Id: 29a8.3d48 Suspend: 0 Teb: 00000000`00969000 Unfrozen
        27 Id: 29a8.432c Suspend: 0 Teb: 00000000`00973000 Unfrozen
        28 Id: 29a8.a2c Suspend: 0 Teb: 00000000`00975000 Unfrozen
        29 Id: 29a8.3aac Suspend: 0 Teb: 00000000`00977000 Unfrozen
        30 Id: 29a8.3b24 Suspend: 0 Teb: 00000000`00979000 Unfrozen
        31 Id: 29a8.3088 Suspend: 0 Teb: 00000000`0097b000 Unfrozen
        32 Id: 29a8.2e30 Suspend: 0 Teb: 00000000`0097f000 Unfrozen
        33 Id: 29a8.4208 Suspend: 0 Teb: 00000000`00989000 Unfrozen
        34 Id: 29a8.1e80 Suspend: 0 Teb: 00000000`0098b000 Unfrozen
        35 Id: 29a8.4014 Suspend: 0 Teb: 00000000`0098f000 Unfrozen
        36 Id: 29a8.2970 Suspend: 0 Teb: 00000000`00991000 Unfrozen
        37 Id: 29a8.42d4 Suspend: 0 Teb: 00000000`00993000 Unfrozen
        38 Id: 29a8.3414 Suspend: 0 Teb: 00000000`00995000 Unfrozen
        39 Id: 29a8.b50 Suspend: 0 Teb: 00000000`009a5000 Unfrozen
        40 Id: 29a8.3c1c Suspend: 0 Teb: 00000000`009a7000 Unfrozen
        41 Id: 29a8.b8c Suspend: 0 Teb: 00000000`009a9000 Unfrozen
        42 Id: 29a8.b24 Suspend: 0 Teb: 00000000`009ab000 Unfrozen
        43 Id: 29a8.3b54 Suspend: 0 Teb: 00000000`009ad000 Unfrozen
        44 Id: 29a8.4300 Suspend: 0 Teb: 00000000`009af000 Unfrozen
        45 Id: 29a8.6c0 Suspend: 0 Teb: 00000000`009b3000 Unfrozen
        46 Id: 29a8.4374 Suspend: 0 Teb: 00000000`009b5000 Unfrozen
        47 Id: 29a8.41f8 Suspend: 0 Teb: 00000000`009cd000 Unfrozen
        48 Id: 29a8.3528 Suspend: 0 Teb: 00000000`009db000 Unfrozen
        49 Id: 29a8.3d88 Suspend: 0 Teb: 00000000`009f3000 Unfrozen
        50 Id: 29a8.38a4 Suspend: 0 Teb: 00000000`009a1000 Unfrozen
        51 Id: 29a8.4274 Suspend: 0 Teb: 00000000`0084a000 Unfrozen
        52 Id: 29a8.4058 Suspend: 0 Teb: 00000000`00870000 Unfrozen
        53 Id: 29a8.1c80 Suspend: 0 Teb: 00000000`00820000 Unfrozen
        54 Id: 29a8.14f0 Suspend: 0 Teb: 00000000`00822000 Unfrozen
        55 Id: 29a8.4324 Suspend: 0 Teb: 00000000`00824000 Unfrozen
        56 Id: 29a8.2810 Suspend: 0 Teb: 00000000`00826000 Unfrozen
        57 Id: 29a8.2d14 Suspend: 0 Teb: 00000000`00828000 Unfrozen
        58 Id: 29a8.2d18 Suspend: 0 Teb: 00000000`0082a000 Unfrozen
        59 Id: 29a8.34c4 Suspend: 0 Teb: 00000000`0089a000 Unfrozen
        60 Id: 29a8.38b4 Suspend: 0 Teb: 00000000`0089e000 Unfrozen
        61 Id: 29a8.43c4 Suspend: 0 Teb: 00000000`00983000 Unfrozen
        62 Id: 29a8.415c Suspend: 0 Teb: 00000000`008d8000 Unfrozen
        63 Id: 29a8.2308 Suspend: 0 Teb: 00000000`00812000 Unfrozen
        64 Id: 29a8.3fd8 Suspend: 0 Teb: 00000000`00814000 Unfrozen
        65 Id: 29a8.413c Suspend: 0 Teb: 00000000`00816000 Unfrozen
        66 Id: 29a8.3ee4 Suspend: 0 Teb: 00000000`00818000 Unfrozen
        67 Id: 29a8.2ddc Suspend: 0 Teb: 00000000`00872000 Unfrozen
        68 Id: 29a8.3c0c Suspend: 0 Teb: 00000000`009f7000 Unfrozen
        69 Id: 29a8.22c4 Suspend: 0 Teb: 00000000`0092a000 Unfrozen
        70 Id: 29a8.30f4 Suspend: 0 Teb: 00000000`009d1000 Unfrozen
        71 Id: 29a8.3660 Suspend: 0 Teb: 00000000`009d3000 Unfrozen
        72 Id: 29a8.2cd0 Suspend: 0 Teb: 00000000`009d5000 Unfrozen
        73 Id: 29a8.41a8 Suspend: 0 Teb: 00000000`009d7000 Unfrozen
        74 Id: 29a8.1b6c Suspend: 0 Teb: 00000000`009d9000 Unfrozen
        75 Id: 29a8.3a84 Suspend: 0 Teb: 00000000`009dd000 Unfrozen
        76 Id: 29a8.2714 Suspend: 0 Teb: 00000000`009df000 Unfrozen
        77 Id: 29a8.3988 Suspend: 0 Teb: 00000000`009e1000 Unfrozen
        78 Id: 29a8.43b8 Suspend: 0 Teb: 00000000`009e3000 Unfrozen
        79 Id: 29a8.2834 Suspend: 0 Teb: 00000000`009e5000 Unfrozen
        80 Id: 29a8.3bfc Suspend: 0 Teb: 00000000`009e7000 Unfrozen

      0:000> ~57 kv
       # Child-SP RetAddr : Args to Child : Call Site
      00 00000000`6aaff7c8 00007ff8`96b245c3 : 00000000`00000000 00000000`527001ea 00000000`00000030 00000000`00000030 : ntdll!NtWaitForSingleObject+0x14
      01 00000000`6aaff7d0 00000000`528b3a8d : 00000000`3d7c9200 00000000`02ac4440 00000000`00000000 00000000`00000cd8 : KERNELBASE!WaitForSingleObjectEx+0x93
      02 00000000`6aaff870 00000000`5282cd5b : 00000000`3d7c9200 00000000`02ac4440 00000000`3d87d800 00000000`00000000 : jvm!JVM_RaiseSignal+0x523d
      03 00000000`6aaff8a0 00000000`5282d3b7 : 00000000`3d87d800 00000000`02ac4440 00000000`00000000 00007ff8`9a219860 : jvm!JVM_Sleep+0x7c88b
      04 00000000`6aaff8d0 00000000`5276f785 : 00000000`00000000 00000000`3d87d800 00000000`00000001 00000000`6aaffa70 : jvm!JVM_Sleep+0x7cee7
      05 00000000`6aaff900 00007ff8`3ed36377 : 00000000`5a938b28 00000000`00000001 00000000`00000001 60f632d9`00000003 : jvm!JNI_CreateJavaVM+0x205
      06 00000000`6aaff9a0 00007ff8`3ed4937b : 00000000`5a938b28 00000000`00000001 7ff00000`00000000 00000000`6aaffa70 : jfxwebkit!WTF::isMainThread+0x57
      07 00000000`6aaff9f0 00007ff8`3eee58fd : 00000000`00000001 00007ff8`9a1d267d 00000000`001d0000 00007ff8`711530de : jfxwebkit!WTF::Thread::create+0x29b
      08 00000000`6aaffb30 00007ff8`3ee2d077 : 00000000`00000020 00000000`56efceb0 00000000`56efcea0 00000000`56efce70 : jfxwebkit!WTF::platformUserPreferredLanguages+0x15a95d
      09 00000000`6aaffb60 00007ff8`9a208f07 : 00000000`7ffe0385 00000000`00000000 00000000`00000003 00000000`7ffe0384 : jfxwebkit!WTF::platformUserPreferredLanguages+0xa20d7
      0a 00000000`6aaffb90 00007ff8`9a20903b : 00007ff8`3eee8a00 00007ff8`3d660000 00007ff8`00000003 00000000`00828000 : ntdll!LdrpCallInitRoutine+0x6f
      0b 00000000`6aaffc00 00007ff8`9a2065b1 : 00000000`00828000 00000000`00828000 00007ff8`3eee8a00 00007ff8`3ee2d014 : ntdll!LdrpCallTlsInitializers+0x87
      0c 00000000`6aaffc80 00007ff8`9a22a2be : 00000000`3d0b0d00 00000000`00000000 00000000`00000000 00000000`00000000 : ntdll!LdrShutdownThread+0x141
      0d 00000000`6aaffd80 00007ff8`96b4772a : 00007ff8`3d660000 00000000`00000000 00000000`3d0b0d50 00000000`00000000 : ntdll!RtlExitUserThread+0x3e
      0e 00000000`6aaffdc0 00007ff8`96ff04c4 : 00000000`5c6857b0 00000000`00000000 00000000`00000000 00000000`00000000 : KERNELBASE!FreeLibraryAndExitThread+0x4a
      0f 00000000`6aaffdf0 00007ff8`96ff03c1 : 00000000`5c6857b0 00000000`5c6857b0 00000000`00000000 00000000`00000000 : ucrtbase!common_end_thread+0xa4
      10 00000000`6aaffe20 00007ff8`99ad81f4 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : ucrtbase!thread_start<unsigned int (__cdecl*)(void * __ptr64)>+0x41
      11 00000000`6aaffe50 00007ff8`9a22a251 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : kernel32!BaseThreadInitThunk+0x14
      12 00000000`6aaffe80 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : ntdll!RtlUserThreadStart+0x21

      We looked for locks, found the one which seems to be frozen and forced a dump of its call stack. It seems to be blocked in the webkit and WTF layers.



      ---------- BEGIN SOURCE ----------
      package org.test.webview;

      import javafx.application.Application;
      import javafx.geometry.HPos;
      import javafx.geometry.VPos;
      import javafx.scene.Node;
      import javafx.scene.Scene;
      import javafx.scene.layout.HBox;
      import javafx.scene.layout.Priority;
      import javafx.scene.layout.Region;
      import javafx.scene.paint.Color;
      import javafx.scene.web.WebEngine;
      import javafx.scene.web.WebView;
      import javafx.stage.Stage;

      public class WebViewApp extends Application {

          private Scene scene;

          @Override
          public void start(Stage stage) {
              // create the scene
              stage.setTitle("Web View");
              scene = new Scene(new FxBrowser(), 750, 500, Color.web("#666970"));
              stage.setScene(scene);
              scene.getStylesheets().add("webviewsample/BrowserToolbar.css");
              stage.show();
          }

          public static void main(String[] args) {
              launch(args);
          }
      }

      class FxBrowser extends Region {

          final WebView browser = new WebView();
          final WebEngine webEngine = browser.getEngine();

          public FxBrowser() {
              //apply the styles
              getStyleClass().add("browser");
              // load the web page
              webEngine.load("https://www.wikipedia.org/");
              //add the web view to the scene
              getChildren().add(browser);
          }

          private Node createSpacer() {
              Region spacer = new Region();
              HBox.setHgrow(spacer, Priority.ALWAYS);
              return spacer;
          }

          @Override
          protected void layoutChildren() {
              double w = getWidth();
              double h = getHeight();
              layoutInArea(browser, 0, 0, w, h, 0, HPos.CENTER, VPos.CENTER);
          }

          @Override
          protected double computePrefWidth(double height) {
              return 750;
          }

          @Override
          protected double computePrefHeight(double width) {
              return 500;
          }
      }
      ---------- END SOURCE ----------

      FREQUENCY : often


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              Assignee:
              pnarayanaswa Praveen Narayanaswamy
              Reporter:
              webbuggrp Webbug Group
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                Created:
                Updated:
                Resolved: