RESOLVED FIXED 221965
REGRESSION (r272842): [ BigSur Wk2 ] imported/w3c/web-platform-tests/media-source/mediasource-seekable.html is a flakey text failure 
https://bugs.webkit.org/show_bug.cgi?id=221965
Summary REGRESSION (r272842): [ BigSur Wk2 ] imported/w3c/web-platform-tests/media-so...
Robert Jenner
Reported 2021-02-16 08:57:55 PST
imported/w3c/web-platform-tests/media-source/mediasource-seekable.html is a flakey text failure in BigSur release and debug in Wk 2. HISTORY URL: https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fmedia-source%2Fmediasource-seekable.html DIFF URL: https://build.webkit.org/results/Apple-BigSur-Release-WK2-Tests/r272904%20(227)/imported/w3c/web-platform-tests/media-source/mediasource-seekable-pretty-diff.html TEXT DIFF: PASS Get seekable time ranges when the sourcebuffer is empty. -PASS Get seekable time ranges after init segment received. +FAIL Get seekable time ranges after init segment received. assert_equals: expected 6.549 but got NaN PASS Get seekable time ranges on an infinite stream.
Attachments
Patch (1.69 KB, patch)
2021-02-16 09:18 PST, Robert Jenner 		no flags
DetailsFormatted DiffDiff
Patch (2.34 KB, patch)
2021-02-16 09:47 PST, Robert Jenner 		no flags
DetailsFormatted DiffDiff
Patch (1.43 KB, patch)
2021-02-17 14:33 PST, Robert Jenner 		no flags
DetailsFormatted DiffDiff
Show Obsolete (3) View All Add attachment proposed patch, testcase, etc.
Radar WebKit Bug Importer
Comment 1 2021-02-16 08:58:15 PST
<rdar://problem/74393187>
Robert Jenner
Comment 2 2021-02-16 09:09:07 PST
Failure reproducible with the same reported failure result at tip of tree using the test: run-webkit-test imported/w3c/web-platform-tests/media-source/mediasource-seekable.html --iterations 1000 -f Failures appear to have started with r272842. CHANGESET URL: https://trac.webkit.org/changeset/272842/webkit
Robert Jenner
Comment 3 2021-02-16 09:18:29 PST
Created attachment 420475 [details] Patch
Robert Jenner
Comment 4 2021-02-16 09:47:52 PST
Created attachment 420481 [details] Patch
Robert Jenner
Comment 5 2021-02-16 11:52:23 PST
Discovered more tests that started flakey crashing at r272842: • http/tests/navigation/parsed-iframe-dynamic-form-back-entry.html • imported/w3c/web-platform-tests/html/canvas/element/imagebitmap/createImageBitmap-origin.sub.html • imported/w3c/web-platform-tests/intersection-observer/text-target.html • imported/w3c/web-platform-tests/html/semantics/embedded-content/media-elements/event_playing.html HISTORY URL: https://results.webkit.org/?suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fsemantics%2Fembedded-content%2Fmedia-elements%2Fevent_playing.html&test=imported%2Fw3c%2Fweb-platform-tests%2Fintersection-observer%2Ftext-target.html&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fsemantics%2Fembedded-content%2Fmedia-elements%2Fevent_canplaythrough.html&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fcanvas%2Felement%2Fimagebitmap%2FcreateImageBitmap-origin.sub.html&platform=mac
Ryan Haddad
Comment 6 2021-02-17 10:44:50 PST
Comment on attachment 420481 [details] Patch Too many changelogs.
Robert Jenner
Comment 7 2021-02-17 14:33:25 PST
Created attachment 420718 [details] Patch
Truitt Savell
Comment 8 2021-02-17 14:38:31 PST
Comment on attachment 420718 [details] Patch Clearing flags on attachment: 420718 Committed r273031 (234232@main): <https://commits.webkit.org/234232@main>
Peng Liu
Comment 9 2021-03-18 11:15:26 PDT
I think r274591 has fixed the flakiness.
Peng Liu
Comment 10 2021-03-18 11:48:34 PDT
TestExpectations was updated in r274649.
Note You need to log in before you can comment on or make changes to this bug.