Bug 208345

Summary: REGRESSION: [ Mac wk1 ] fast/canvas/webgl/canvas-webgl-page-cache.html is flaky crashing in rx::GetFunctionsGL
Product: WebKit Reporter: Jason Lawrence <Lawrence.j>
Component: WebGLAssignee: Nobody <webkit-unassigned>
Status: RESOLVED CONFIGURATION CHANGED    
Severity: Normal CC: cdumez, dino, jdarpinian, justin_fan, kbr, webkit-bot-watchers-bugzilla, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Mac   
OS: macOS 10.14   
Attachments:
Description Flags
crash log none

Description Jason Lawrence 2020-02-27 15:31:20 PST 
Created attachment 391929 [details]
crash log

fast/canvas/webgl/canvas-webgl-page-cache.html

Description:
This test is flaky crashing on Mac. It appears to have a regression point at r256910.

History:
https://results.webkit.org/?suite=layout-tests&test=fast%2Fcanvas%2Fwebgl%2Fcanvas-webgl-page-cache.html&flavor=wk1&limit=50000&platform=mac

Crash log attached.
Comment 1 Radar WebKit Bug Importer 2020-02-27 15:32:15 PST 
<rdar://problem/59865686>
Comment 2 Jason Lawrence 2020-02-27 15:45:25 PST 
I have marked this test as crashing while this is investigated.
https://trac.webkit.org/changeset/257594/webkit
Comment 3 Alexey Proskuryakov 2020-02-29 13:01:53 PST 
Seems more likely to be an ANGLE regression, r256784. Jason couldn't reproduce, but it's certainly happening on the bots.
Comment 4 Kenneth Russell 2020-03-01 10:58:17 PST 
Most likely when a page is retrieved from the back-forward cache it's not reinitializing all of the ANGLE-related data structures. Need to catch this in the debugger.
Comment 5 Ryan Haddad 2020-04-28 22:53:29 PDT 
Removed flaky expectation in https://trac.webkit.org/changeset/260873/webkit since the test has been consistently passing for the past few weeks.