[Webkit-unassigned] [Bug 191278] Layout Test imported/w3c/web-platform-tests/webrtc/RTCPeerConnection-setRemoteDescription-tracks.https.html is flaky

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=191278

--- Comment #1 from Ryan Haddad <ryanhaddad at apple.com> ---
This test also seems to be a flaky crash, as seen on this run:
https://build.webkit.org/results/Apple%20High%20Sierra%20Release%20WK2%20(Tests)/r237778%20(7615)/results.html

Thread 20 Crashed:: com.apple.audio.IOThread.client
0   com.apple.WebCore                   0x0000000109ede9a8 WebCore::AudioSampleDataSource::pushSamplesInternal(AudioBufferList const&, WTF::MediaTime const&, unsigned long) + 104 (AudioSampleDataSource.mm:154)
1   com.apple.WebCore                   0x000000010afc5da0 WebCore::RealtimeOutgoingAudioSourceCocoa::audioSamplesAvailable(WTF::MediaTime const&, WebCore::PlatformAudioData const&, WebCore::AudioStreamDescription const&, unsigned long) + 784 (RealtimeOutgoingAudioSourceCocoa.cpp:109)
2   com.apple.WebCore                   0x000000010afa6707 WebCore::MediaStreamTrackPrivate::forEachObserver(WTF::Function<void (WebCore::MediaStreamTrackPrivate::Observer&)> const&) const + 711 (Atomics.h:247)
3   com.apple.WebCore                   0x000000010afa6ebf WebCore::MediaStreamTrackPrivate::audioSamplesAvailable(WTF::MediaTime const&, WebCore::PlatformAudioData const&, WebCore::AudioStreamDescription const&, unsigned long) + 191 (MediaStreamTrackPrivate.cpp:249)
4   com.apple.WebCore                   0x000000010afa9cc7 WebCore::RealtimeMediaSource::forEachObserver(WTF::Function<void (WebCore::RealtimeMediaSource::Observer&)> const&) const + 711 (Atomics.h:247)
5   com.apple.WebCore                   0x000000010afa9f7c WebCore::RealtimeMediaSource::audioSamplesAvailable(WTF::MediaTime const&, WebCore::PlatformAudioData const&, WebCore::AudioStreamDescription const&, unsigned long) + 92 (RealtimeMediaSource.cpp:170)
6   com.apple.WebCore                   0x0000000109de7c53 WebCore::MediaStreamAudioSource::consumeAudio(WebCore::AudioBus&, unsigned long) + 419 (MediaStreamAudioSourceCocoa.cpp:86)
7   com.apple.WebCore                   0x000000010a639f1b WebCore::AudioDestinationNode::render(WebCore::AudioBus*, WebCore::AudioBus*, unsigned long) + 395 (AudioDestinationNode.cpp:93)
8   com.apple.WebCore                   0x000000010aeb7bf2 WebCore::AudioDestinationMac::render(unsigned int, AudioBufferList*) + 82 (DumbPtrTraits.h:41)
9   com.apple.WebCore                   0x000000010aeb7b0f WebCore::AudioDestinationMac::inputProc(void*, unsigned int*, AudioTimeStamp const*, unsigned int, unsigned int, AudioBufferList*) + 15 (AudioDestinationMac.cpp:190)
10  com.apple.audio.units.Components    0x000000046a226da9 AUInputElement::PullInput(unsigned int&, AudioTimeStamp const&, unsigned int, unsigned int) + 185
11  com.apple.audio.units.Components    0x000000046a103f97 AUInputFormatConverter2::InputProc(OpaqueAudioConverter*, unsigned int*, AudioBufferList*, AudioStreamPacketDescription**, void*) + 199
12  com.apple.audio.toolbox.AudioToolbox        0x00007fff34080257 AudioConverterChain::CallInputProc(unsigned int) + 613
13  com.apple.audio.toolbox.AudioToolbox        0x00007fff3407ff0d AudioConverterChain::FillBufferFromInputProc(unsigned int*, CABufferList*) + 127
14  com.apple.audio.toolbox.AudioToolbox        0x00007fff3407fe6f BufferedAudioConverter::GetInputBytes(unsigned int, unsigned int&, CABufferList const*&) + 207
15  com.apple.audio.toolbox.AudioToolbox        0x00007fff3407fc71 CBRConverter::RenderOutput(CABufferList*, unsigned int, unsigned int&, AudioStreamPacketDescription*) + 107
16  com.apple.audio.toolbox.AudioToolbox        0x00007fff3407298a BufferedAudioConverter::FillBuffer(unsigned int&, AudioBufferList&, AudioStreamPacketDescription*) + 346
17  com.apple.audio.toolbox.AudioToolbox        0x00007fff34072cda AudioConverterChain::RenderOutput(CABufferList*, unsigned int, unsigned int&, AudioStreamPacketDescription*) + 106
18  com.apple.audio.toolbox.AudioToolbox        0x00007fff3407298a BufferedAudioConverter::FillBuffer(unsigned int&, AudioBufferList&, AudioStreamPacketDescription*) + 346
19  com.apple.audio.toolbox.AudioToolbox        0x00007fff3407231f AudioConverterFillComplexBuffer + 1076
20  com.apple.audio.units.Components    0x000000046a1036cb AUInputFormatConverter2::PullAndConvertInput(AudioTimeStamp const&, unsigned int&, AudioBufferList&, AudioStreamPacketDescription*, bool&) + 107
21  com.apple.audio.units.Components    0x000000046a10350c AUConverterBase::RenderBus(unsigned int&, AudioTimeStamp const&, unsigned int, unsigned int) + 572
22  com.apple.audio.units.Components    0x000000046a22dca4 AUBase::DoRenderBus(unsigned int&, AudioTimeStamp const&, unsigned int, AUOutputElement*, unsigned int, AudioBufferList&) + 166
23  com.apple.audio.units.Components    0x000000046a22d37a AUBase::DoRender(unsigned int&, AudioTimeStamp const&, unsigned int, unsigned int, AudioBufferList&) + 546
24  com.apple.audio.units.Components    0x000000046a106d44 AUHAL::AUIOProc(unsigned int, AudioTimeStamp const*, AudioBufferList const*, AudioTimeStamp const*, AudioBufferList*, AudioTimeStamp const*, void*) + 1726
25  com.apple.audio.CoreAudio           0x00007fff35136885 HALC_ProxyIOContext::IOWorkLoop() + 5021
26  com.apple.audio.CoreAudio           0x00007fff3513531c HALC_ProxyIOContext::IOThreadEntry(void*) + 128
27  com.apple.audio.CoreAudio           0x00007fff3513505e HALB_IOThread::Entry(void*) + 72
28  libsystem_pthread.dylib             0x00007fff5dda8661 _pthread_body + 340
29  libsystem_pthread.dylib             0x00007fff5dda850d _pthread_start + 377
30  libsystem_pthread.dylib             0x00007fff5dda7bf9 thread_start + 13

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