221965 2021-02-16 08:57:55 -0800 REGRESSION (r272842): [ BigSur Wk2 ] imported/w3c/web-platform-tests/media-source/mediasource-seekable.html is a flakey text failure 2021-03-18 11:48:34 -0700 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED https://bugs.webkit.org/show_bug.cgi?id=221293 https://bugs.webkit.org/show_bug.cgi?id=221830 https://bugs.webkit.org/show_bug.cgi?id=221686 InRadar P2 Normal --- 1 jenner peng.liu6 jonlee peng.liu6 tsavell webkit-bot-watchers-bugzilla webkit-bug-importer oldest_to_newest 1729693 0 jenner 2021-02-16 08:57:55 -0800 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. 1729694 1 webkit-bug-importer 2021-02-16 08:58:15 -0800 <rdar://problem/74393187> 1729699 2 jenner 2021-02-16 09:09:07 -0800 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 1729706 3 420475 jenner 2021-02-16 09:18:29 -0800 Created attachment 420475 Patch 1729735 4 420481 jenner 2021-02-16 09:47:52 -0800 Created attachment 420481 Patch 1729843 5 jenner 2021-02-16 11:52:23 -0800 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 1730379 6 420481 ryanhaddad 2021-02-17 10:44:50 -0800 Comment on attachment 420481 Patch Too many changelogs. 1730539 7 420718 jenner 2021-02-17 14:33:25 -0800 Created attachment 420718 Patch 1730543 8 420718 tsavell 2021-02-17 14:38:31 -0800 Comment on attachment 420718 Patch Clearing flags on attachment: 420718 Committed r273031 (234232@main): <https://commits.webkit.org/234232@main> 1741275 9 peng.liu6 2021-03-18 11:15:26 -0700 I think r274591 has fixed the flakiness. 1741303 10 peng.liu6 2021-03-18 11:48:34 -0700 TestExpectations was updated in r274649. 420475 2021-02-16 09:18:29 -0800 2021-02-16 09:47:50 -0800 Patch bug-221965-20210216091828.patch text/plain 1732 jenner U3VidmVyc2lvbiBSZXZpc2lvbjogMjcyOTA4CmRpZmYgLS1naXQgYS9MYXlvdXRUZXN0cy9DaGFu Z2VMb2cgYi9MYXlvdXRUZXN0cy9DaGFuZ2VMb2cKaW5kZXggODE2ZTE1NWU0NDU1ZWY4OTRhNGI4 YTBkODU0ZGE4ZTU0YjFlNWQ4MC4uNjMyYzBhMjEzMDg5ODAxODk1YTAzNjU3OTQ1MjI4OGVmYzk5 YTk2YiAxMDA2NDQKLS0tIGEvTGF5b3V0VGVzdHMvQ2hhbmdlTG9nCisrKyBiL0xheW91dFRlc3Rz L0NoYW5nZUxvZwpAQCAtMSwzICsxLDEyIEBACisyMDIxLTAyLTE2ICBSb2JlcnQgSmVubmVyICA8 amVubmVyQGFwcGxlLmNvbT4KKworICAgICAgICBSRUdSRVNTSU9OIChyMjcyODQyKTogWyBCaWdT dXIgV2syIF0gaW1wb3J0ZWQvdzNjL3dlYi1wbGF0Zm9ybS10ZXN0cy9tZWRpYS1zb3VyY2UvbWVk aWFzb3VyY2Utc2Vla2FibGUuaHRtbCBpcyBhIGZsYWtleSB0ZXh0IGZhaWx1cmUKKyAgICAgICAg aHR0cHM6Ly9idWdzLndlYmtpdC5vcmcvc2hvd19idWcuY2dpP2lkPTIyMTk2NQorCisgICAgICAg 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