Bug 232456

Summary: REGRESSION (r283935): fast/css/style-element-process-crash.html is a flaky failure
Product: WebKit Reporter: Eric Hutchison <ehutchison>
Component: FormsAssignee: Chris Dumez <cdumez>
Status: RESOLVED FIXED    
Severity: Normal CC: achristensen, cdumez, dino, ehutchison, koivisto, rniwa, simon.fraser, webkit-bot-watchers-bugzilla, webkit-bug-importer, wenson_hsieh
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Patch none

Description Eric Hutchison 2021-10-28 14:44:59 PDT 
fast/css/style-element-process-crash.html

is a flaky failure on iOS15 Simulator, most often failing on gpuprocess.

History: https://results.webkit.org/?suite=layout-tests&test=fast/css/style-element-process-crash.html

Build: https://ews-build.webkit.org/#/builders/68/builds/660

Results: https://ews-build.s3-us-west-2.amazonaws.com/iOS-15-Simulator-WK2-Tests-EWS/r442696-660/results.html

Diff:
--- /Volumes/Data/worker/iOS-15-Simulator-WK2-Tests-EWS/build/layout-test-results/fast/css/style-element-process-crash-expected.txt
+++ /Volumes/Data/worker/iOS-15-Simulator-WK2-Tests-EWS/build/layout-test-results/fast/css/style-element-process-crash-actual.txt
@@ -1 +1 @@
-PASS. WebKit didn't crash.
+

Reproduced failure locally on ToT (r284955) using run-webkit-tests --ios-simulator --force -f --iterations 500 --exit-after-n-failures 1 --clobber-old-results fast/css/style-element-process-crash.html and run-webkit-tests --ios-simulator --force -f --iterations 500 --exit-after-n-failures 1 --clobber-old-results --use-gpu-process fast/css/style-element-process-crash.html.
Comment 1 Radar WebKit Bug Importer 2021-10-28 14:46:21 PDT 
<rdar://problem/84779240>
Comment 2 Eric Hutchison 2021-10-28 14:54:43 PDT 
Updated test expectations at https://trac.webkit.org/changeset/285005/webkit
Comment 3 Alexey Proskuryakov 2021-10-31 12:36:49 PDT 
History is somewhat sparse on iOS, but this is clearly a regression.

On the WPE bot, this regressed on 2021-10-11. Must have been r283935.
Comment 4 Chris Dumez 2021-11-01 08:09:44 PDT 
Created attachment 442977 [details]
Patch
Comment 5 EWS 2021-11-01 08:55:26 PDT 
Committed r285106 (243747@main): <https://commits.webkit.org/243747@main>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 442977 [details].