Bug 288036 – NEW TEST(289843@main): [macOS iOS Debug]: ASSERTION FAILED: frame->presentationTime() >= m_lastMuxedSampleStartTime

• Status: NEW
• Component: Media

[Marta Darbinyan]

There is assertion failure in http/wpt/mediarecorder/MediaRecorder-matroska-AV-audio-video-dataavailable.html that causing the test to crash. The test is also false-positive in EWS.

The test was added in 289843@main and it has been having assertion since then. 

stderr:
ASSERTION FAILED: frame->presentationTime() >= m_lastMuxedSampleStartTime
/Volumes/Data/worker/macOS-Sequoia-Debug-Build-EWS/build/Source/WebCore/platform/mediarecorder/MediaRecorderPrivateEncoder.cpp(853) : void WebCore::MediaRecorderPrivateEncoder::interleaveAndEnqueueNextFrame()
1   0x3066dc7ec WebCore::MediaRecorderPrivateEncoder::interleaveAndEnqueueNextFrame()
2   0x3066dc430 WebCore::MediaRecorderPrivateEncoder::partiallyFlushEncodedQueues()
3   0x3066dbd54 WebCore::MediaRecorderPrivateEncoder::enqueueCompressedVideoFrame(WebCore::VideoEncoder::EncodedFrame&&)
4   0x3067061ac _ZZZN7WebCore27MediaRecorderPrivateEncoder16appendVideoFrameEN3WTF9MediaTimeEONS1_3RefINS_10VideoFrameENS1_12RawPtrTraitsIS4_EENS1_21DefaultRefDerefTraitsIS4_EEEEENK3$_2clINS_12VideoEncoder12EncodedFrameEEEDaOT_ENUlvE_clEv
5   0x3067060c8 _ZN3WTF6Detail15CallableWrapperIZZN7WebCore27MediaRecorderPrivateEncoder16appendVideoFrameENS_9MediaTimeEONS_3RefINS2_10VideoFrameENS_12RawPtrTraitsIS6_EENS_21DefaultRefDerefTraitsIS6_EEEEENK3$_2clINS2_12VideoEncoder12EncodedFrameEEEDaOT_EUlvE_vJEE4callEv
6   0x12c130fec WTF::Function<void ()>::operator()() const
7   0x12c2f71d0 WTF::(anonymous namespace)::DispatchWorkItem::operator()()
8   0x12c2f61a0 void WTF::dispatchWorkItem<WTF::(anonymous namespace)::DispatchWorkItem>(void*)
9   0x186c055b4 _dispatch_client_callout
10  0x186c0cbd8 _dispatch_lane_serial_drain
11  0x186c0d730 _dispatch_lane_invoke
12  0x186c189a0 _dispatch_root_queue_drain_deferred_wlh
13  0x186c181ec _dispatch_workloop_worker_thread
14  0x186db43d8 _pthread_wqthread
15  0x186db30f0 start_wqthread
com.apple.WebKit.WebContent.Development terminated (pid 29564) for reason: crash
LEAK: 2 WebPageProxy

Test link:
https://ews-build.s3-us-west-2.amazonaws.com/macOS-Sequoia-Debug-WK2-Tests-EWS/ad2a90e5-13097-rerun/results.html

History:
https://results.webkit.org/?suite=layout-tests&test=http%2Fwpt%2Fmediarecorder%2FMediaRecorder-matroska-AV-audio-video-dataavailable.html&flavor=wk2&style=debug&recent=false

[Radar WebKit Bug Importer]

<rdar://problem/145182916>

[EWS]

Test gardening commit 290676@main (141a002a1aa6): <https://commits.webkit.org/290676@main>

Reviewed commits have been landed. Closing PR #40931 and removing active labels.

[EWS]

Test gardening commit 290759@main (e9a1e3cbc830): <https://commits.webkit.org/290759@main>

Reviewed commits have been landed. Closing PR #41023 and removing active labels.