[Webkit-unassigned] [Bug 239942] New: [GStreamer][Debug] media-recorder tests hitting an ASSERT

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=239942

            Bug ID: 239942
           Summary: [GStreamer][Debug] media-recorder tests hitting an
                    ASSERT
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Platform
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: pnormand at igalia.com

Thread 1 (Thread 0x7f7cc17fa640 (LWP 46093)):
#0  WTFCrash() () at /app/webkit/Source/WTF/wtf/Assertions.cpp:322
#1  0x00007f7e39393be6 in WTFCrashWithInfo(int, char const*, char const*, int) () at /app/webkit/WebKitBuild/Debug/WTF/Headers/wtf/Assertions.h:748
#2  0x00007f7e406de452 in WebCore::RealtimeMediaSource::removeAudioSampleObserver(WebCore::RealtimeMediaSource::AudioSampleObserver&) (this=0x7f7d44186500, observer=...) at /app/webkit/Source/WebCore/platform/mediastream/RealtimeMediaSource.cpp:73
#3  0x00007f7e3cbe6c43 in InternalSource::stopObserving() (this=0x7f7cde096900) at /app/webkit/Source/WebCore/platform/mediastream/gstreamer/GStreamerMediaStreamSource.cpp:197
#4  0x00007f7e3cbe30ed in webkitMediaStreamSrcChangeState(GstElement*, GstStateChange) (element=0x5626fb816770 [WebKitMediaStreamSrc|webkitmediastreamsrc6], transition=GST_STATE_CHANGE_PAUSED_TO_READY) at /app/webkit/Source/WebCore/platform/mediastream/gstreamer/GStreamerMediaStreamSource.cpp:539
#5  0x00007f7e2fb97922 in gst_element_change_state (element=element at entry=0x5626fb816770 [WebKitMediaStreamSrc|webkitmediastreamsrc6], transition=transition at entry=GST_STATE_CHANGE_PAUSED_TO_READY) at ../gst/gstelement.c:3083
#6  0x00007f7e2fb98065 in gst_element_set_state_func (element=0x5626fb816770 [WebKitMediaStreamSrc|webkitmediastreamsrc6], state=GST_STATE_READY) at ../gst/gstelement.c:3037
#7  0x00007f7e2fb73eec in gst_bin_element_set_state (next=GST_STATE_READY, current=GST_STATE_PAUSED, start_time=0 [0:00:00.000000000], base_time=11596110641054559 [3221:08:30.641054559], element=0x5626fb816770 [WebKitMediaStreamSrc|webkitmediastreamsrc6], bin=0x5626fb826550 [GstURISourceBin|urisourcebin6]) at ../gst/gstbin.c:2581
#8  gst_bin_change_state_func (element=0x5626fb826550 [GstURISourceBin|urisourcebin6], transition=GST_STATE_CHANGE_PAUSED_TO_READY) at ../gst/gstbin.c:2923
#9  0x00007f7de817469f in gst_uri_source_bin_change_state (element=0x5626fb826550 [GstURISourceBin|urisourcebin6], transition=GST_STATE_CHANGE_PAUSED_TO_READY) at ../gst/playback/gsturisourcebin.c:2931
#10 0x00007f7e2fb97922 in gst_element_change_state (element=element at entry=0x5626fb826550 [GstURISourceBin|urisourcebin6], transition=transition at entry=GST_STATE_CHANGE_PAUSED_TO_READY) at ../gst/gstelement.c:3083
#11 0x00007f7e2fb98065 in gst_element_set_state_func (element=0x5626fb826550 [GstURISourceBin|urisourcebin6], state=GST_STATE_READY) at ../gst/gstelement.c:3037
#12 0x00007f7e2fb73eec in gst_bin_element_set_state (next=GST_STATE_READY, current=GST_STATE_PAUSED, start_time=0 [0:00:00.000000000], base_time=11596110641054559 [3221:08:30.641054559], element=0x5626fb826550 [GstURISourceBin|urisourcebin6], bin=0x5626fb89a070 [GstUriTranscodeBin|uritranscodebin]) at ../gst/gstbin.c:2581
#13 gst_bin_change_state_func (element=0x5626fb89a070 [GstUriTranscodeBin|uritranscodebin], transition=GST_STATE_CHANGE_PAUSED_TO_READY) at ../gst/gstbin.c:2923
#14 0x00007f7e2fbc223e in gst_pipeline_change_state (element=0x5626fb89a070 [GstUriTranscodeBin|uritranscodebin], transition=GST_STATE_CHANGE_PAUSED_TO_READY) at ../gst/gstpipeline.c:529
#15 0x00007f7de81e6e8e in gst_uri_transcode_bin_change_state (element=0x5626fb89a070 [GstUriTranscodeBin|uritranscodebin], transition=GST_STATE_CHANGE_PAUSED_TO_READY) at ../gst/transcode/gsturitranscodebin.c:466
#16 0x00007f7e2fb97922 in gst_element_change_state (element=element at entry=0x5626fb89a070 [GstUriTranscodeBin|uritranscodebin], transition=GST_STATE_CHANGE_PAUSED_TO_READY) at ../gst/gstelement.c:3083
#17 0x00007f7e2fb9839a in gst_element_continue_state (element=element at entry=0x5626fb89a070 [GstUriTranscodeBin|uritranscodebin], ret=ret at entry=GST_STATE_CHANGE_NO_PREROLL) at ../gst/gstelement.c:2791
#18 0x00007f7e2fb97a25 in gst_element_change_state (element=element at entry=0x5626fb89a070 [GstUriTranscodeBin|uritranscodebin], transition=transition at entry=GST_STATE_CHANGE_PLAYING_TO_PAUSED) at ../gst/gstelement.c:3129
#19 0x00007f7e2fb98065 in gst_element_set_state_func (element=0x5626fb89a070 [GstUriTranscodeBin|uritranscodebin], state=GST_STATE_NULL) at ../gst/gstelement.c:3037
#20 0x00007f7e2cc5f3bb in gst_transcoder_main (data=<optimized out>) at ../gst-libs/gst/transcoder/gsttranscoder.c:842
#21 0x00007f7e2fdf9351 in g_thread_proxy (data=0x7f7ccc0018c0) at ../glib/gthread.c:827
#22 0x00007f7e2d3cc3ba in start_thread (arg=0x7f7cc17fa640) at pthread_create.c:481
#23 0x00007f7e2f6c3b03 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

STDERR: ASSERTION FAILED: isMainThread()
STDERR: /app/webkit/Source/WebCore/platform/mediastream/RealtimeMediaSource.cpp(73) : void WebCore::RealtimeMediaSource::removeAudioSampleObserver(WebCore::RealtimeMediaSource::AudioSampleObserver&)

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