Bug 310965 – media/media-vp8-hiddenframes.html is sometimes crashing on EWS

• Component: Media
• Status: RESOLVED FIXED

[Jean-Yves Avenard [:jya]]

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

[Jean-Yves Avenard [:jya]]

Pull request: https://github.com/WebKit/WebKit/pull/61562

[EWS]

Committed 310263@main (95cfc9759c8a): <https://commits.webkit.org/310263@main>

Reviewed commits have been landed. Closing PR #61562 and removing active labels.