Bug 288327 – Crash under RemoteSampleBufferDisplayLayer::ref()

• Status: RESOLVED
• Resolution: FIXED
• Component: Media

[Chris Dumez]

Crash under RemoteSampleBufferDisplayLayer::ref():
```
Thread 14 Crashed::  Dispatch queue: RemoteVideoMediaStreamTrackRenderer
0   WebKit                        	       0x1167b0844 WTFCrashWithInfo(int, char const*, char const*, int) + 100 (Assertions.h:920)
1   WebKit                        	       0x117d8c6f8 WebKit::RemoteSampleBufferDisplayLayer::ref() const + 168 (RemoteSampleBufferDisplayLayer.h:59)
2   WebKit                        	       0x118a9c9f8 WTF::DefaultRefDerefTraits<WebKit::RemoteSampleBufferDisplayLayer>::refIfNotNull(WebKit::RemoteSampleBufferDisplayLayer*) + 40 (Ref.h:49)
3   WebKit                        	       0x118a9c9b8 WTF::RefPtr<WebKit::RemoteSampleBufferDisplayLayer, WTF::RawPtrTraits<WebKit::RemoteSampleBufferDisplayLayer>, WTF::DefaultRefDerefTraits<WebKit::RemoteSampleBufferDisplayLayer>>::RefPtr(WebKit::RemoteSampleBufferDisplayLayer*) + 40 (RefPtr.h:48)
4   WebKit                        	       0x118a800e4 WTF::RefPtr<WebKit::RemoteSampleBufferDisplayLayer, WTF::RawPtrTraits<WebKit::RemoteSampleBufferDisplayLayer>, WTF::DefaultRefDerefTraits<WebKit::RemoteSampleBufferDisplayLayer>>::RefPtr(WebKit::RemoteSampleBufferDisplayLayer*) + 40 (RefPtr.h:48)
5   WebKit                        	       0x118a7fff4 WebKit::RemoteSampleBufferDisplayLayerManager::dispatchMessage(IPC::Connection&, IPC::Decoder&) + 148 (RemoteSampleBufferDisplayLayerManager.cpp:88)
6   WebKit                        	       0x117d541e0 WebKit::RemoteSampleBufferDisplayLayerManager::didReceiveMessage(IPC::Connection&, IPC::Decoder&) + 500 (RemoteSampleBufferDisplayLayerManagerMessageReceiver.cpp:59)
7   WebKit                        	       0x11af3b094 IPC::Connection::dispatchMessageReceiverMessage(IPC::MessageReceiver&, WTF::UniqueRef<IPC::Decoder>&&) + 448 (Connection.cpp:475)
8   WebKit                        	       0x11af48770 IPC::WorkQueueMessageReceiverQueue::enqueueMessage(IPC::Connection&, WTF::UniqueRef<IPC::Decoder>&&)::'lambda'()::operator()() + 68 (MessageReceiveQueues.h:70)
```

[Chris Dumez]

<rdar://145426041>

[Chris Dumez]

Pull request: https://github.com/WebKit/WebKit/pull/41179

[EWS]

Committed 290949@main (a83b1901c7a4): <https://commits.webkit.org/290949@main>

Reviewed commits have been landed. Closing PR #41179 and removing active labels.