229094 2021-08-13 14:02:33 -0700 REGRESSION: [ iOS ] 5 TestWebKitAPI.WebpagePreferences.* api tests are flaky timing out 2021-12-20 23:11:14 -0800 1 1 1 Unclassified WebKit WebKit API WebKit Nightly Build iPhone / iPad Unspecified RESOLVED FIXED https://bugs.webkit.org/show_bug.cgi?id=229452 https://bugs.webkit.org/show_bug.cgi?id=229258 InRadar P2 Normal --- 1 ayumi_kojima achristensen achristensen cdumez darin ehutchison ggaren webkit-bot-watchers-bugzilla webkit-bug-importer wenson_hsieh oldest_to_newest 1784208 0 ayumi_kojima 2021-08-13 14:02:33 -0700 TestWebKitAPI.WebpagePreferences.WebsitePoliciesAutoplayEnabled TestWebKitAPI.WebpagePreferences.WebsitePoliciesUserInterferenceWithPlaying TestWebKitAPI.WebpagePreferences.WebsitePoliciesUpdates TestWebKitAPI.WebpagePreferences.WebsitePoliciesPlayingWithoutInterference TestWebKitAPI.WebpagePreferences.WebsitePoliciesPlayingWithUserGesture Are flaky timing out on iOS 14 E Simulator. History: https://results.webkit.org/?suite=api-tests&suite=api-tests&suite=api-tests&suite=api-tests&suite=api-tests&test=TestWebKitAPI.WebpagePreferences.WebsitePoliciesAutoplayEnabled&test=TestWebKitAPI.WebpagePreferences.WebsitePoliciesPlayingWithUserGesture&test=TestWebKitAPI.WebpagePreferences.WebsitePoliciesPlayingWithoutInterference&test=TestWebKitAPI.WebpagePreferences.WebsitePoliciesUpdates&test=TestWebKitAPI.WebpagePreferences.WebsitePoliciesUserInterferenceWithPlaying stdio: https://build.webkit.org/#/builders/45/builds/1794/steps/17/logs/stdio Looking at the history, it looks like the flaky timeout has started at https://trac.webkit.org/changeset/279835/webkit because the tests were consistently crashing for a short period of time before they started flaky timing out and this change https://trac.webkit.org/changeset/279679/webkit fixed the crash. 1784209 1 webkit-bug-importer 2021-08-13 14:03:28 -0700 <rdar://problem/81915299> 1784257 2 cdumez 2021-08-13 15:31:46 -0700 I don't think the regression point is correct. r279835 got reverted in r279840 and yet the tests were still flaky after that. 1784263 3 ayumi_kojima 2021-08-13 15:48:04 -0700 You are right. It is r279840. 1784264 4 cdumez 2021-08-13 15:50:48 -0700 (In reply to ayumi_kojima from comment #3) > You are right. It is r279840. No, this doesn't make sense either since r279840 is a simple revert of r279835. 1784266 5 ayumi_kojima 2021-08-13 16:07:45 -0700 Okay, now I understand it. I will try bisect it and research more. Thanks Chris! 1784295 6 ehutchison 2021-08-13 18:27:59 -0700 Reproduction: 1) TestWebKitAPI.WebpagePreferences.WebsitePoliciesAutoplayEnabled timeout was reproduced on r279831 using run-api-tests --iOS-simulator --release TestWebKitAPI.WebpagePreferences.WebsitePoliciesAutoplayEnabled. The test passed on r 279866 using the same command. There are no available spades between those revisions to test on. 2) TestWebKitAPI.WebpagePreferences.WebsitePoliciesUserInterferenceWithPlaying TestWebKitAPI.WebpagePreferences.WebsitePoliciesUpdates TestWebKitAPI.WebpagePreferences.WebsitePoliciesPlayingWithoutInterference TestWebKitAPI.WebpagePreferences.WebsitePoliciesPlayingWithUserGesture: each of these tests passed on r279831 and r279866 with the same command as above. Was unable to reproduce the timeout on these tests. 1791558 7 ehutchison 2021-09-08 11:39:35 -0700 Attempted to reproduce timeouts using run-api-tests --iterations 100 --iOS-simulator --no-build tesname on r281989 and r281920. Unable to reproduce. 1794523 8 438491 achristensen 2021-09-17 11:25:12 -0700 Created attachment 438491 Patch 1794545 9 ews-feeder 2021-09-17 11:56:43 -0700 Committed r282678 (241819@main): <https://commits.webkit.org/241819@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 438491. 1794609 10 ehutchison 2021-09-17 14:14:02 -0700 Patch applied disables test; issue is not resolved. Reopening bug. 1825831 11 447672 achristensen 2021-12-20 18:03:41 -0800 Created attachment 447672 Patch 1825879 12 ews-feeder 2021-12-20 22:23:54 -0800 Committed r287298 (245450@main): <https://commits.webkit.org/245450@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 447672. 438491 2021-09-17 11:25:12 -0700 2021-12-20 18:03:39 -0800 Patch bug-229094-20210917112511.patch text/plain 3649 achristensen U3VidmVyc2lvbiBSZXZpc2lvbjogMjgyNDg1CmRpZmYgLS1naXQgYS9Ub29scy9DaGFuZ2VMb2cg Yi9Ub29scy9DaGFuZ2VMb2cKaW5kZXggMTUwNmY4NmU5ZTE2Nzk4Mzk2OWZiYmE4YmM0ZGFjMDMw NTUyZjU2Ni4uZDM2YmE2ODAwMThmZTNlYzNlN2E1ZDE1MDYxMzFlYjM4MDQ3NDlmNSAxMDA2NDQK LS0tIGEvVG9vbHMvQ2hhbmdlTG9nCisrKyBiL1Rvb2xzL0NoYW5nZUxvZwpAQCAtMSwzICsxLDE2 IEBACisyMDIxLTA5LTE3ICBBbGV4IENocmlzdGVuc2VuICA8YWNocmlzdGVuc2VuQHdlYmtpdC5v cmc+CisKKyAgICAgICAgUkVHUkVTU0lPTjogWyBpT1MgXSA1IFRlc3RXZWJLaXRBUEkuV2VicGFn ZVByZWZlcmVuY2VzLiogYXBpIHRlc3RzIGFyZSBmbGFreSB0aW1pbmcgb3V0CisgICAgICAgIGh0 dHBzOi8vYnVncy53ZWJraXQub3JnL3Nob3dfYnVnLmNnaT9pZD0yMjkwOTQKKworICAgICAgICBS ZXZpZXdlZCBieSBOT0JPRFkgKE9PUFMhKS4KKworICAgICAgICBEaXNhYmxlIHRoZSB0ZXN0cyBv biBpT1MgdW50aWwgd2UgY2FuIGZpeCB0aGUgcHJvYmxlbS4KKyAgICAgICAgVGhpcyB3aWxsIGhl 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