Bug 243838

Summary:	GPUP deadlock shutting down RemoteRenderingBackend while drawing a MediaPlayer
Product:	WebKit	Reporter:	Kimmo Kinnunen <kkinnunen>
Component:	Canvas	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	a_protyasha, dino, jean-yves.avenard, jer.noble, simon.fraser, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	Other
Hardware:	Unspecified
OS:	Unspecified
See Also:	https://bugs.webkit.org/show_bug.cgi?id=253791
Bug Depends on:	235353
Bug Blocks:

Description Kimmo Kinnunen 2022-08-11 12:30:36 PDT

GPUP deadlock shutting down RemoteRenderingBackend while drawing a MediaPlayer

1. When shutting down RRB, GPUP main thread waits until the cleanup task has run
2. When drawing a media player, RRB work thread waits until the main thread has run the video player paint 

Solution is to run media players in a work queue

Comment 1 Radar WebKit Bug Importer 2022-08-11 12:30:51 PDT

<rdar://problem/98523368>

Comment 2 Kimmo Kinnunen 2022-08-11 22:50:43 PDT

I have not seen this one on any site, but I have not looked for it either. This has occurred for me in dev scenarios running a debugger.