Bug 141716
| Summary: | [GStreamer] GLib-GObject-WARNING **: cannot register existing type 'ClutterGstVideoSink' | ||
|---|---|---|---|
| Product: | WebKit | Reporter: | Michael Catanzaro <mcatanzaro> |
| Component: | Media | Assignee: | Michael Catanzaro <mcatanzaro> |
| Status: | RESOLVED DUPLICATE | ||
| Severity: | Major | CC: | mcatanzaro |
| Priority: | P2 | ||
| Version: | 528+ (Nightly build) | ||
| Hardware: | PC | ||
| OS: | Linux | ||
Michael Catanzaro
This is a regression introduced sometime in the past month. Some pages like https://groups.google.com/forum/#!search/libseccomp can no longer be loaded in WebKitGTK+:
(WebKitWebProcess:30350): GLib-GObject-WARNING **: cannot register existing type 'ClutterGstVideoSink'
(WebKitWebProcess:30350): GLib-GObject-CRITICAL **: g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE (instance_type)' failed
(WebKitWebProcess:30350): GLib-CRITICAL **: g_once_init_leave: assertion 'result != 0' failed
(WebKitWebProcess:30350): GStreamer-CRITICAL **: gst_element_register: assertion 'g_type_is_a (type, GST_TYPE_ELEMENT)' failed
The page continues loading forever.
| Attachments | ||
|---|---|---|
| Add attachment proposed patch, testcase, etc. |
Michael Catanzaro
Ah drat, I don't have a debug build so no backtrace. Will try to post one soon.
Michael Catanzaro
I'm not sure how we try to register the type twice, but it looks like this is only a problem for in-process plugin scanning, which only I use because we only do this with seccomp filters enabled. And we need to stop doing in-process plugin scanning before we turn on seccomp filters by default, see bug #140131 which is a priority for me. So, I won't bother any further with this.
Stack trace of thread 4166:
#0 0x00007f68a68f6cd5 _g_log_abort (libglib-2.0.so.0)
#1 0x00007f68a68f7bb7 g_logv (libglib-2.0.so.0)
#2 0x00007f68a68f7ca5 g_log (libglib-2.0.so.0)
#3 0x00007f68a68f7ce6 g_return_if_fail_warning (libglib-2.0.so.0)
#4 0x00007f68a6c2fb11 g_type_add_interface_static (libgobject-2.0.so.0)
#5 0x00007f67eba77d84 clutter_gst_video_sink_get_type (libgstclutter.so)
#6 0x00007f67eba77bb5 plugin_init (libgstclutter.so)
#7 0x00007f68a3f16261 gst_plugin_register_func (libgstreamer-1.0.so.0)
#8 0x00007f68a3f1722c gst_plugin_load_file (libgstreamer-1.0.so.0)
#9 0x00007f68a3f28c52 gst_registry_scan_plugin_file (libgstreamer-1.0.so.0)
#10 0x00007f68a3f29580 gst_registry_scan_path_level (libgstreamer-1.0.so.0)
#11 0x00007f68a3f2963a gst_registry_scan_path_internal (libgstreamer-1.0.so.0)
#12 0x00007f68a3f2a0b0 scan_and_update_registry (libgstreamer-1.0.so.0)
#13 0x00007f68a3f2a7d3 ensure_current_registry (libgstreamer-1.0.so.0)
#14 0x00007f68a3f2a8c8 gst_update_registry (libgstreamer-1.0.so.0)
#15 0x00007f68a3eb6426 init_post (libgstreamer-1.0.so.0)
#16 0x00007f68a68fe37c g_option_context_parse (libglib-2.0.so.0)
#17 0x00007f68a3eb5830 gst_init_check (libgstreamer-1.0.so.0)
#18 0x00007f68b0d1abd4 _ZN7WebCore19initializeGStreamerEv (libwebkit2gtk-4.0.so.37)
#19 0x00007f68b0d1dbcf _ZN7WebCore44initializeGStreamerAndRegisterWebKitElementsEv (libwebkit2gtk-4.0.so.37)
#20 0x00007f68b0d1dca4 _ZN7WebCore27MediaPlayerPrivateGStreamer11isAvailableEv (libwebkit2gtk-4.0.so.37)
#21 0x00007f68b0d1db85 _ZN7WebCore27MediaPlayerPrivateGStreamer19registerMediaEngineEPFvPFN3WTF10PassOwnPtrINS_27MediaPlayerPrivateInterfaceEEEPNS_11MediaPlayerEEPFvRNS1_7HashSetINS1_6StringENS1_10StringHashENS1_10HashTraitsISA_EEEEEPFNS5_12SupportsTypeERKNS_28MediaEngineSupportParametersEEPFvRNS1_6VectorISA_Lm0ENS1_15CrashOnOverflowEEEEPFvvEPFvRKSA_EPFbSX_SX_EE (libwebkit2gtk-4.0.so.37)
#22 0x00007f68b06bbcda buildMediaEnginesVector (libwebkit2gtk-4.0.so.37)
#23 0x00007f68b06bbcfa installedMediaEngines (libwebkit2gtk-4.0.so.37)
#24 0x00007f68b06bd9f1 _ZN7WebCore11MediaPlayer11isAvailableEv (libwebkit2gtk-4.0.so.37)
#25 0x00007f68b1213d7d videoConstructor (libwebkit2gtk-4.0.so.37)
#26 0x00007f68b1214054 _ZN7WebCore18HTMLElementFactory13createElementERKNS_13QualifiedNameERNS_8DocumentEPNS_15HTMLFormElementEb (libwebkit2gtk-4.0.so.37)
#27 0x00007f68b0151951 _ZN7WebCore12HTMLDocument13createElementERKN3WTF12AtomicStringERi (libwebkit2gtk-4.0.so.37)
#28 0x00007f68b0ec5182 _ZN7WebCore40jsDocumentPrototypeFunctionCreateElementEPN3JSC9ExecStateE (libwebkit2gtk-4.0.so.37)
#29 0x00007f6843fff0a8 n/a (n/a)
Michael Catanzaro
*** This bug has been marked as a duplicate of bug 142978 ***