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      <base href="https://bugs.webkit.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [GTK] Several tests crashing on debug bot in (anonymous namespace)::MediaPlayerPrivateGStreamerBase::repaint"
   href="https://bugs.webkit.org/show_bug.cgi?id=163511">163511</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[GTK] Several tests crashing on debug bot in (anonymous namespace)::MediaPlayerPrivateGStreamerBase::repaint
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>Other
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Media Elements
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>mcatanzaro&#64;igalia.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>bugs-noreply&#64;webkitgtk.org, magomez&#64;igalia.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>The GTK+ debug bot is exiting early due to a bunch of crashes in media elements code. I wonder if it could be related to r207287 &quot;[GTK] Video playback doesn't work properly with accelerated compositing disabled&quot;.

This backtrace is typical:

Thread 1 (Thread 0x7f1b8cfd1700 (LWP 5543)):
#0  0x00007f1c3f074162 in WTFCrash () at ../../Source/WTF/wtf/Assertions.cpp:323
#1  0x00007f1c4767a7fc in (anonymous namespace)::MediaPlayerPrivateGStreamerBase::repaint (this=0x7f1c2e9e1240) at ../../Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.cpp:564
#2  0x00007f1c4767aa0f in (anonymous namespace)::MediaPlayerPrivateGStreamerBase::triggerRepaint (this=0x7f1c2e9e1240, sample=0x5ba0f0) at ../../Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.cpp:613
#3  0x00007f1c4767aa81 in (anonymous namespace)::MediaPlayerPrivateGStreamerBase::repaintCallback (player=0x7f1c2e9e1240, sample=0x5ba0f0) at ../../Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.cpp:633
#4  0x00007f1c3949ef53 in g_cclosure_marshal_VOID__BOXEDv () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/glib-2.44.1/gobject/gmarshal.c:1950
#5  0x00007f1c3949c3b4 in _g_closure_invoke_va () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/glib-2.44.1/gobject/gclosure.c:831
#6  0x00007f1c394b54c8 in g_signal_emit_valist () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/glib-2.44.1/gobject/gsignal.c:3214
#7  0x00007f1c394b5dc2 in g_signal_emit () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/glib-2.44.1/gobject/gsignal.c:3361
#8  0x00007f1c47684c36 in webkitVideoSinkRepaintRequested (sink=0x8a6c00, sample=0x5ba0f0) at ../../Source/WebCore/platform/graphics/gstreamer/VideoSinkGStreamer.cpp:184
#9  0x00007f1c47685868 in VideoRenderRequestScheduler::requestRender (this=0x8a6920, sink=0x8a6c00, buffer=0x7f1bac088740) at ../../Source/WebCore/platform/graphics/gstreamer/VideoSinkGStreamer.cpp:110
#10 0x00007f1c4768501b in webkitVideoSinkRender (baseSink=0x8a6c00, buffer=0x7f1bac088740) at ../../Source/WebCore/platform/graphics/gstreamer/VideoSinkGStreamer.cpp:265
#11 0x00007f1c3aaaf6fd in gst_base_sink_do_preroll () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/libs/gst/base/gstbasesink.c:2289
#12 0x00007f1c3aab02bb in gst_base_sink_do_sync () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/libs/gst/base/gstbasesink.c:2508
#13 0x00007f1c3aab1208 in gst_base_sink_chain_unlocked () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/libs/gst/base/gstbasesink.c:3494
#14 0x00007f1c3aab2b64 in gst_base_sink_chain_main () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/libs/gst/base/gstbasesink.c:3655
#15 0x00007f1c3ab5a01a in gst_pad_chain_data_unchecked () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstpad.c:4156
#16 gst_pad_push_data () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstpad.c:4408
#17 0x00007f1c3ab61b0e in gst_pad_push () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstpad.c:4527
#18 0x00007f1c3ab4afa3 in gst_proxy_pad_chain_default () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstghostpad.c:126
#19 0x00007f1c3ab5a01a in gst_pad_chain_data_unchecked () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstpad.c:4156
#20 gst_pad_push_data () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstpad.c:4408
#21 0x00007f1c3ab61b0e in gst_pad_push () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstpad.c:4527
#22 0x00007f1c3ab4afa3 in gst_proxy_pad_chain_default () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstghostpad.c:126
#23 0x00007f1c3ab5a01a in gst_pad_chain_data_unchecked () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstpad.c:4156
#24 gst_pad_push_data () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstpad.c:4408
#25 0x00007f1c3ab61b0e in gst_pad_push () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstpad.c:4527
#26 0x00007f1c3aabc72d in gst_base_transform_chain () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/libs/gst/base/gstbasetransform.c:2369
#27 0x00007f1c3ab5a01a in gst_pad_chain_data_unchecked () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstpad.c:4156
#28 gst_pad_push_data () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstpad.c:4408
#29 0x00007f1c3ab61b0e in gst_pad_push () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstpad.c:4527
#30 0x00007f1c3aabc72d in gst_base_transform_chain () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/libs/gst/base/gstbasetransform.c:2369
#31 0x00007f1c3ab5a01a in gst_pad_chain_data_unchecked () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstpad.c:4156
#32 gst_pad_push_data () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstpad.c:4408
#33 0x00007f1c3ab61b0e in gst_pad_push () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstpad.c:4527
#34 0x00007f1c3aabc72d in gst_base_transform_chain () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/libs/gst/base/gstbasetransform.c:2369
#35 0x00007f1c3ab5a01a in gst_pad_chain_data_unchecked () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstpad.c:4156
#36 gst_pad_push_data () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstpad.c:4408
#37 0x00007f1c3ab61b0e in gst_pad_push () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstpad.c:4527
#38 0x00007f1c3aabc72d in gst_base_transform_chain () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/libs/gst/base/gstbasetransform.c:2369
#39 0x00007f1c3ab5a01a in gst_pad_chain_data_unchecked () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstpad.c:4156
#40 gst_pad_push_data () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstpad.c:4408
#41 0x00007f1c3ab61b0e in gst_pad_push () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstpad.c:4527
#42 0x00007f1c3ab4afa3 in gst_proxy_pad_chain_default () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstghostpad.c:126
#43 0x00007f1c3ab5a01a in gst_pad_chain_data_unchecked () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstpad.c:4156
#44 gst_pad_push_data () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstpad.c:4408
#45 0x00007f1c3ab61b0e in gst_pad_push () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gstpad.c:4527
#46 0x00007f1beccb8d57 in gst_queue_push_one () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/plugins/elements/gstqueue.c:1338
#47 gst_queue_loop () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/plugins/elements/gstqueue.c:1485
#48 0x00007f1c3ab8b621 in gst_task_func () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/gstreamer-1.8.0/gst/gsttask.c:332
#49 0x00007f1c393c17e8 in g_thread_pool_thread_proxy () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/glib-2.44.1/glib/gthreadpool.c:307
#50 0x00007f1c393c0e65 in g_thread_proxy () at /home/slave/webkitgtk/gtk-linux-64-debug-tests/build/WebKitBuild/DependenciesGTK/Source/glib-2.44.1/glib/gthread.c:764
#51 0x00007f1c3ad540a4 in start_thread (arg=0x7f1b8cfd1700) at pthread_create.c:309
#52 0x00007f1c3648a87d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111</pre>
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