Bug 229009 - [ Win EWS ] fast/forms/* tests are flaky crashing FAULTING_IP: WebKit!WebCore::FontCache::lastResortFallbackFont+ec [C:\cygwin\home\buildbot\worker\Windows-EWS\build\Source\WebCore\platform\graphics\win\FontCacheWin.cpp @ 424]
Summary: [ Win EWS ] fast/forms/* tests are flaky crashing FAULTING_IP: WebKit!WebCor...
Alias: None
Product: WebKit
Classification: Unclassified
Component: New Bugs (show other bugs)
Version: WebKit Nightly Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
Keywords: InRadar
: 228968 229143 229194 (view as bug list)
Depends on:
Reported: 2021-08-11 11:36 PDT by ayumi_kojima
Modified: 2021-08-24 11:03 PDT (History)
5 users (show)

See Also:

Crash log (141.74 KB, text/plain)
2021-08-11 11:37 PDT, ayumi_kojima
no flags Details

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Description ayumi_kojima 2021-08-11 11:36:25 PDT

Is flaky crashing on Windows-EWS.

It seems that the crash is not showing up in the open source directory https://results.webkit.org/?suite=layout-tests&test=fast/forms/input-baseline.html

It appears to have started at around https://ews-build.webkit.org/#/builders/10/builds/100149

Results page: https://ews-build.s3-us-west-2.amazonaws.com/Windows-EWS/r433905-100149/results.html
Comment 1 ayumi_kojima 2021-08-11 11:37:09 PDT
Created attachment 435363 [details]
Crash log
Comment 2 Radar WebKit Bug Importer 2021-08-11 11:38:53 PDT
Comment 3 ayumi_kojima 2021-08-11 11:47:10 PDT
Updated test expectations https://trac.webkit.org/changeset/280923/webkit
Comment 4 ayumi_kojima 2021-08-11 11:49:35 PDT
This bug https://bugs.webkit.org/show_bug.cgi?id=228968 might be related. This is about a flaky crash at fast/forms/search/search-zoom-computed-style-height.html and this also started at around same build (100140)
Comment 5 Ryan Haddad 2021-08-11 12:15:37 PDT
WebKit!WebCore::FontCache::lastResortFallbackFont+ec [C:\cygwin\home\buildbot\worker\Windows-EWS\build\Source\WebCore\platform\graphics\win\FontCacheWin.cpp @ 424]
Comment 6 ayumi_kojima 2021-08-16 09:48:01 PDT

Are also flaky crashing on Windows-EWS.

Not showing up on the open source directory: https://results.webkit.org/?suite=layout-tests&suite=layout-tests&suite=layout-tests&test=fast%2Fforms%2Ffocus-selection-input.html&test=fast%2Fforms%2Fselect%2Flistbox-in-multi-column.html&test=fast%2Fforms%2Fform-element-geometry.html

Seems like the crash logs indicate that they are related to each other.

Builds first started showing crashes:
fast/forms/form-element-geometry.html:  https://ews-build.webkit.org/#/builders/10/builds/100147
fast/forms/focus-selection-input.html: https://ews-build.webkit.org/#/builders/10/builds/100132
fast/forms/select/listbox-in-multi-column.html: https://ews-build.webkit.org/#/builders/10/builds/100140
Comment 7 ayumi_kojima 2021-08-16 09:52:15 PDT
Updated test expectations https://trac.webkit.org/changeset/281092/webkit
Comment 8 ayumi_kojima 2021-08-17 09:40:17 PDT
*** Bug 229194 has been marked as a duplicate of this bug. ***
Comment 9 ayumi_kojima 2021-08-19 08:36:24 PDT
More fast tests are showing up as flaky tests on Win EWS:


It looks like this bug https://bugs.webkit.org/show_bug.cgi?id=228186 is related. 

Marked expectations to speed up EWS while this bug is being fixed: https://trac.webkit.org/changeset/281236/webkit
Comment 10 ayumi_kojima 2021-08-24 10:59:50 PDT
It looks like the bug is fixed here:https://bugs.webkit.org/show_bug.cgi?id=228186

Confirmed the tests are not showing up on EWS. Removing test expectations https://trac.webkit.org/changeset/281499/webkit
Comment 11 ayumi_kojima 2021-08-24 11:00:18 PDT
*** Bug 228968 has been marked as a duplicate of this bug. ***
Comment 12 ayumi_kojima 2021-08-24 11:00:34 PDT
*** Bug 229143 has been marked as a duplicate of this bug. ***