Bug 259496

Summary:	REGRESSION(265561@main): [ Monterey+ x86_64 ] imported/w3c/web-platform-tests/webcodecs/temporal-svc-encoding.https.any.worker.html?vp9 is a constant failure
Product:	WebKit	Reporter:	Ben Schwartz <ben_schwartz>
Component:	New Bugs	Assignee:	youenn fablet <youennf>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	webkit-bot-watchers-bugzilla, webkit-bug-importer, youennf
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified
See Also:	https://bugs.webkit.org/show_bug.cgi?id=258076 https://bugs.webkit.org/show_bug.cgi?id=259497 https://github.com/web-platform-tests/wpt/pull/42661

Description Ben Schwartz 2023-07-25 14:07:03 PDT

imported/w3c/web-platform-tests/webcodecs/temporal-svc-encoding.https.any.worker.html?vp9

This test is a constant failure on macOS Monterey+ WK2.

HISTORY:

https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fwebcodecs%2Ftemporal-svc-encoding.https.any.worker.html%3Fvp9

TEXT DIFF:

 PASS SVC L1T2
-PASS SVC L1T3
+FAIL SVC L1T3 assert_equals: corrupted_frames: 8 expected 0 but got 1

DIFF URL:

https://build.webkit.org/results/Apple-Ventura-Debug-WK2-GPUProcess-Tests/265564@main%20(3027)/imported/w3c/web-platform-tests/webcodecs/temporal-svc-encoding.https.any.worker_vp9-pretty-diff.html

Comment 1 Radar WebKit Bug Importer 2023-07-25 14:07:24 PDT

<rdar://problem/112858534>

Comment 2 Ben Schwartz 2023-07-25 14:10:46 PDT

I was able to reproduce this bug on macOS Ventura using x86_64 running the test as follows:

run-webkit-tests imported/w3c/web-platform-tests/webcodecs/temporal-svc-encoding.https.any.worker.html

I was also able to bisect a regression point. This test reproduced at 265561@main, but it did not reproduce at 265560@main. Changes at 265561@main are directly related to this error, and is likely what caused the failure.

Comment 3 Ben Schwartz 2023-07-25 14:15:52 PDT

I have marked this test as a constant failure while this issue is investigated. (Link: https://github.com/WebKit/WebKit/pull/16076).

Comment 4 Ben Schwartz 2023-07-25 14:42:50 PDT

(In reply to Ben Schwartz from comment #3)
> I have marked this test as a constant failure while this issue is
> investigated. (Link: https://github.com/WebKit/WebKit/pull/16076).

Corrections:
 - Occurring on Monterey+ x86_64, not Monterey+ WK2.
 - Corrected pull request link: https://github.com/WebKit/WebKit/pull/16079

Comment 5 EWS 2023-07-25 15:44:06 PDT

Test gardening commit 266303@main (072aee3c8516): <https://commits.webkit.org/266303@main>

Reviewed commits have been landed. Closing PR #16079 and removing active labels.

Comment 6 youenn fablet 2023-10-13 05:49:42 PDT

Pull request: https://github.com/WebKit/WebKit/pull/19044

Comment 7 youenn fablet 2023-10-20 04:34:22 PDT

Submitted web-platform-tests pull request: https://github.com/web-platform-tests/wpt/pull/42661

Comment 8 EWS 2023-10-20 09:25:39 PDT

Committed 269569@main (8af9ce4f8d0a): <https://commits.webkit.org/269569@main>

Reviewed commits have been landed. Closing PR #19044 and removing active labels.