310965 2026-03-28 02:12:36 -0700 media/media-vp8-hiddenframes.html is sometimes crashing on EWS 2026-03-30 15:54:12 -0700 1 1 1 Unclassified WebKit Media WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 jean-yves.avenard jean-yves.avenard webkit-bug-importer oldest_to_newest 2194649 0 jean-yves.avenard 2026-03-28 02:12:36 -0700 media/media-vp8-hiddenframes.html is sometimes crashing on EWS: ``` ASSERTION FAILED: queue.isCurrent() /Volumes/Data/worker/macOS-Tahoe-Debug-Build-EWS/build/WebKitBuild/Debug/usr/local/include/wtf/FunctionDispatcher.h(59) : void WTF::assertIsCurrent(const SerialFunctionDispatcher &) 1 0x300652b30 WTF::assertIsCurrent(WTF::SerialFunctionDispatcher const&) 2 0x300739c24 WTF::NativePromise<WTF::MediaTime, WebCore::PlatformMediaError, 0u>::ThenCallback<false, void>::disconnect() 3 0x300730cb0 WTF::NativePromiseRequest::disconnect() 4 0x3007882ec WebCore::MediaPlayerPrivateWebM::cancelPendingSeek() 5 0x300788000 WebCore::MediaPlayerPrivateWebM::~MediaPlayerPrivateWebM() 6 0x300788750 WebCore::MediaPlayerPrivateWebM::~MediaPlayerPrivateWebM() 7 0x3007887b4 WebCore::MediaPlayerPrivateWebM::~MediaPlayerPrivateWebM() 8 0x3007b1858 void WTF::ThreadSafeWeakPtrControlBlock::strongDeref<WebCore::MediaPlayerPrivateWebM, (WTF::DestructionThread)1>() const::'lambda'()::operator()() const 9 0x3007b17e4 WTF::Detail::CallableWrapper<void WTF::ThreadSafeWeakPtrControlBlock::strongDeref<WebCore::MediaPlayerPrivateWebM, (WTF::DestructionThread)1>() const::'lambda'(), void>::call() 10 0x12d86bed4 WTF::Function<void ()>::operator()() const 11 0x12d8f80d8 WTF::ensureOnMainThread(WTF::Function<void ()>&&) 12 0x3007b0f28 void WTF::ThreadSafeWeakPtrControlBlock::strongDeref<WebCore::MediaPlayerPrivateWebM, (WTF::DestructionThread)1>() const 13 0x3007b0ce8 WTF::ThreadSafeRefCountedAndCanMakeThreadSafeWeakPtr<WebCore::MediaPlayerPrivateWebM, (WTF::DestructionThread)1>::deref() const 14 0x30079714c WebCore::MediaPlayerPrivateWebM::deref() const 15 0x300918dcc WTF::DefaultRefDerefTraits<WebCore::MediaPlayerPrivateInterface>::derefIfNotNull(WebCore::MediaPlayerPrivateInterface*) 16 0x300918d90 WTF::RefPtr<WebCore::MediaPlayerPrivateInterface, WTF::RawPtrTraits<WebCore::MediaPlayerPrivateInterface>, WTF::DefaultRefDerefTraits<WebCore::MediaPlayerPrivateInterface>>::~RefPtr() 17 0x300905d64 WTF::RefPtr<WebCore::MediaPlayerPrivateInterface, WTF::RawPtrTraits<WebCore::MediaPlayerPrivateInterface>, WTF::DefaultRefDerefTraits<WebCore::MediaPlayerPrivateInterface>>::~RefPtr() 18 0x307385ffc WebCore::MediaPlayer::~MediaPlayer() 19 0x307386144 WebCore::MediaPlayer::~MediaPlayer() 20 0x300647a94 void WTF::ThreadSafeWeakPtrControlBlock::strongDeref<WebCore::MediaPlayer, (WTF::DestructionThread)1>() const::'lambda'()::operator()() const 21 0x300647a28 WTF::Detail::CallableWrapper<void WTF::ThreadSafeWeakPtrControlBlock::strongDeref<WebCore::MediaPlayer, (WTF::DestructionThread)1>() const::'lambda'(), void>::call() 22 0x12d86bed4 WTF::Function<void ()>::operator()() const 23 0x12d8f80d8 WTF::ensureOnMainThread(WTF::Function<void ()>&&) 24 0x3006471c4 void WTF::ThreadSafeWeakPtrControlBlock::strongDeref<WebCore::MediaPlayer, (WTF::DestructionThread)1>() const 25 0x300646fb4 WTF::ThreadSafeRefCountedAndCanMakeThreadSafeWeakPtr<WebCore::MediaPlayer, (WTF::DestructionThread)1>::deref() const 26 0x300646e54 WTF::DefaultRefDerefTraits<WebCore::MediaPlayer>::derefIfNotNull(WebCore::MediaPlayer*) 27 0x300646e20 WTF::RefPtr<WebCore::MediaPlayer, WTF::RawPtrTraits<WebCore::MediaPlayer>, WTF::DefaultRefDerefTraits<WebCore::MediaPlayer>>::~RefPtr() 28 0x300641c88 WTF::RefPtr<WebCore::MediaPlayer, WTF::RawPtrTraits<WebCore::MediaPlayer>, WTF::DefaultRefDerefTraits<WebCore::MediaPlayer>>::~RefPtr() 29 0x305fe3894 WebCore::HTMLMediaElement::clearMediaPlayer() 30 0x305fc69e8 WebCore::HTMLMediaElement::userCancelledLoad() 31 0x305fe3bdc WebCore::HTMLMediaElement::stopWithoutDestroyingMediaPlayer() com.apple.WebKit.WebContent.Development terminated (pid 38054) for reason: crash ``` rdar://173480850 2194650 1 jean-yves.avenard 2026-03-28 02:19:39 -0700 Pull request: https://github.com/WebKit/WebKit/pull/61562 2195324 2 ews-feeder 2026-03-30 15:54:10 -0700 Committed 310263@main (95cfc9759c8a): <https://commits.webkit.org/310263@main> Reviewed commits have been landed. Closing PR #61562 and removing active labels.