[Webkit-unassigned] [Bug 190135] New: [GStreamer] Rare crash (_g_log_abort) in flushCurrentBuffer()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=190135

            Bug ID: 190135
           Summary: [GStreamer] Rare crash (_g_log_abort) in
                    flushCurrentBuffer()
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Gtk
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: aboya at igalia.com
                CC: bugs-noreply at webkitgtk.org

I've seen this happen once:

(WebKitWebProcess:24060): GStreamer-CRITICAL **: gst_sample_get_info: assertion 'GST_IS_SAMPLE (sample)' failed
Thread 1 (Thread 0x7f05dfa136c0 (LWP 24060)):
#0  _g_log_abort () at /webkit/WebKitBuild/DependenciesGTK/Source/glib-2.54.2/glib/gmessages.c:554
#1  0x00007f05c2850559 in g_logv () at /webkit/WebKitBuild/DependenciesGTK/Source/glib-2.54.2/glib/gmessages.c:1362
#2  0x00007f05c2850712 in g_log () at /webkit/WebKitBuild/DependenciesGTK/Source/glib-2.54.2/glib/gmessages.c:1403
#3  0x00007f05c5106bb2 in gst_sample_get_info () at /webkit/WebKitBuild/DependenciesGTK/Source/gstreamer-1.14.3/gst/gstsample.c:216
#4  0x00007f05d9e0c8ca in WebCore::MediaPlayerPrivateGStreamerBase::flushCurrentBuffer (this=0x7f0562e94000) at ../../Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.cpp:921
#5  0x00007f05d9e0cfe5 in WebCore::MediaPlayerPrivateGStreamerBase::<lambda(GstPad*, GstPadProbeInfo*, gpointer)>::operator()(GstPad *, GstPadProbeInfo *, gpointer) const (__closure=0x0, info=0x7ffd075cd030, userData=0x7f0562e94000) at ../../Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.cpp:1091
#6  0x00007f05d9e0d019 in WebCore::MediaPlayerPrivateGStreamerBase::<lambda(GstPad*, GstPadProbeInfo*, gpointer)>::_FUN(GstPad *, GstPadProbeInfo *, gpointer) () at ../../Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.cpp:1093
#7  0x00007f05c50def8e in probe_hook_marshal () at /webkit/WebKitBuild/DependenciesGTK/Source/gstreamer-1.14.3/gst/gstpad.c:3561
#8  0x00007f05c283a6a4 in g_hook_list_marshal () at /webkit/WebKitBuild/DependenciesGTK/Source/glib-2.54.2/glib/ghook.c:672
#9  0x00007f05c50de697 in do_probe_callbacks () at /webkit/WebKitBuild/DependenciesGTK/Source/gstreamer-1.14.3/gst/gstpad.c:3723
#10 0x00007f05c50e0ea3 in gst_pad_send_event_unchecked () at /webkit/WebKitBuild/DependenciesGTK/Source/gstreamer-1.14.3/gst/gstpad.c:5733
#11 0x00007f05c50e1564 in gst_pad_push_event_unchecked () at /webkit/WebKitBuild/DependenciesGTK/Source/gstreamer-1.14.3/gst/gstpad.c:5406

Probably m_sample is null at that point.

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