[Webkit-unassigned] [Bug 227366] REGRESSION: http/tests/preload/onload_event.html is a flaky timeout on Big Sur wk1 Release

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=227366

--- Comment #13 from Jer Noble <jer.noble at apple.com> ---
Classic AVFoundation deadlock:

- MainThread is querying for state on AVAssetTrack
- URLAssetWorkQueue.I thread is requesting more data from WebCore to fulfill query
- WebCore dispatches to MainThread to do networking

The real fix is to move either all of networking to a dedicated runloop/thread/queue, or to move all of AVFoundation access to a dedicated runloop/thread/queue.

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