Bug 261091

Summary: RemoteImageBufferProxy::ensureBackendCreated can wait for a message that isn't pending
Product: WebKit Reporter: Matt Woodrow <mattwoodrow>
Component: Layout and RenderingAssignee: Matt Woodrow <mattwoodrow>
Status: RESOLVED FIXED    
Severity: Normal CC: bfulgham, simon.fraser, webkit-bug-importer, zalan
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   

Description Matt Woodrow 2023-09-03 14:33:26 PDT 
<rdar://114795818>

ensureBackendCreated waits for the DidCreateBackend message to be delivered, but it's possible for the GPUP to have crashed and been recreated since the request was made, and thus the message will never arrive.

We make new requests for backends in RemoteResourceCacheProxy::remoteResourceCacheWasDestroyed, so it should be fine to just fail to return a backend in the meantime.
Comment 1 Matt Woodrow 2023-09-03 14:50:53 PDT 
Pull request: https://github.com/WebKit/WebKit/pull/17390
Comment 2 EWS 2023-09-05 01:25:14 PDT 
Committed 267619@main (df7a74a8f788): <https://commits.webkit.org/267619@main>

Reviewed commits have been landed. Closing PR #17390 and removing active labels.