Bug 242546

Summary:	[ EWS macOS wk1 ] media/video-canvas-createPattern.html is a flaky failure
Product:	WebKit	Reporter:	Hercules Hjalmarsson <hhjalmarsson>
Component:	Media	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	eric.carlson, jer.noble, ryanhaddad, webkit-bot-watchers-bugzilla, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description Hercules Hjalmarsson 2022-07-08 16:50:24 PDT

media/video-canvas-createPattern.html

Is a flaky text failure that has been flaky failing on macOS Release wk1. History shows that it is failing more frequently on arm64 architecture, most recently at 252245@main.

HISTORY:
https://results.webkit.org/?suite=layout-tests&test=media%2Fvideo-canvas-createPattern.html

DIFF URL:
https://build.webkit.org/results/Apple-Monterey-Release-AppleSilicon-WK1-Tests/251556@main%20(3959)/media/video-canvas-createPattern-pretty-diff.html

Comment 1 Radar WebKit Bug Importer 2022-07-08 16:51:29 PDT

<rdar://problem/96705902>

Comment 2 Hercules Hjalmarsson 2022-07-08 16:57:49 PDT

I was able to reproduce the flaky failure ~2% out of 10k iterations on macOS ToT using a arm64 machine, with wk1 and command:

run-webkit-test media/video-canvas-createPattern.html

Comment 3 Hercules Hjalmarsson 2022-07-08 17:10:43 PDT

Pull request: https://github.com/WebKit/WebKit/pull/2253

Comment 4 EWS 2022-07-08 17:15:15 PDT

Test gardening commit 252309@main (881e36db26e6): <https://commits.webkit.org/252309@main>

Reviewed commits have been landed. Closing PR #2253 and removing active labels.

Comment 5 Alexey Proskuryakov 2022-07-09 19:10:20 PDT

It's all black:

-Saw close enough to (200, 200, 0) at (40, 165) OK
-Saw close enough to (200, 200, 0) at (355, 165) OK
-Saw close enough to (200, 200, 0) at (40, 403) OK
-Saw close enough to (200, 200, 0) at (355, 403) OK
-Saw close enough to (57, 202, 203) at (56, 165) OK
-Saw close enough to (57, 202, 203) at (371, 165) OK
-Saw close enough to (57, 202, 203) at (56, 403) OK
-Saw close enough to (57, 202, 203) at (371, 403) OK
-Saw close enough to (53, 203, 9) at (73, 165) OK
-Saw close enough to (53, 203, 9) at (388, 165) OK
-Saw close enough to (53, 203, 9) at (73, 403) OK
-Saw close enough to (53, 203, 9) at (388, 403) OK
+Expected (200, 200, 0) at (40, 165) but saw (0, 0, 0) FAIL
+Expected (200, 200, 0) at (355, 165) but saw (0, 0, 0) FAIL
+Expected (200, 200, 0) at (40, 403) but saw (0, 0, 0) FAIL
+Expected (200, 200, 0) at (355, 403) but saw (0, 0, 0) FAIL
+Expected (57, 202, 203) at (56, 165) but saw (0, 0, 0) FAIL
+Expected (57, 202, 203) at (371, 165) but saw (0, 0, 0) FAIL
+Expected (57, 202, 203) at (56, 403) but saw (0, 0, 0) FAIL
+Expected (57, 202, 203) at (371, 403) but saw (0, 0, 0) FAIL
+Expected (53, 203, 9) at (73, 165) but saw (0, 0, 0) FAIL
+Expected (53, 203, 9) at (388, 165) but saw (0, 0, 0) FAIL
+Expected (53, 203, 9) at (73, 403) but saw (0, 0, 0) FAIL
+Expected (53, 203, 9) at (388, 403) but saw (0, 0, 0) FAIL