Bug 240654 – REGRESSION (r294452): [ iOS ] ImageBufferIOSurfaceBackend - nine tests are a consistent image failure

• Component: New Bugs
• Status: RESOLVED FIXED

[Karl Rackler]

Description:
fast/css/paint-order-shadow.html
fast/forms/ios/focus-ring-size.html
fast/inline/hidpi-outline-auto-negative-offset-with-border-radius.html
fast/inline/hidpi-outline-auto-with-border-radius-horizontal-ltr.html
fast/inline/hidpi-outline-auto-with-border-radius-horizontal-rtl.html
fast/inline/hidpi-outline-auto-with-border-radius-vertical-ltr.html
fast/inline/hidpi-outline-auto-with-border-radius-vertical-rtl.html
fast/inline/hidpi-outline-auto-with-fractional-radius.html
fast/inline/hidpi-outline-auto-with-one-focusring-rect.html

The first failure I saw on the dashboard was on 5/18/2022 at r294452.  The seven fast/inline/hidpi-outline-auto tests have a blank expected image, fast/css/paint-order-shadow.html has a blank actual image, and fast/forms/ios/focus-ring-size.html has both an expected and actual image.

REPRODUCTION STEPS
I can reproduce this on r294452, but unable to reproduce it on r294451 or earlier.

Command: 
run-webkit-tests --root 294452 --ios-simulator --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 --iterations 50 --no-retry fast/inline/hidpi-outline-auto-negative-offset-with-border-radius.html

Result: 
Regressions: Unexpected image-only failures (1)
  fast/inline/hidpi-outline-auto-negative-offset-with-border-radius.html [ ImageOnlyFailure ]

History:
https://results.webkit.org/?suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&test=fast%2Finline%2Fhidpi-outline-auto-negative-offset-with-border-radius.html&test=fast%2Finline%2Fhidpi-outline-auto-with-border-radius-horizontal-ltr.html&test=fast%2Finline%2Fhidpi-outline-auto-with-border-radius-horizontal-rtl.html&test=fast%2Finline%2Fhidpi-outline-auto-with-border-radius-vertical-ltr.html&test=fast%2Finline%2Fhidpi-outline-auto-with-border-radius-vertical-rtl.html&test=fast%2Finline%2Fhidpi-outline-auto-with-fractional-radius.html&test=fast%2Finline%2Fhidpi-outline-auto-with-one-focusring-rect.html&platform=ios&limit=50000

Image Diff:
fast/inline/hidpi-outline-auto-negative-offset-with-border-radius.html
https://build.webkit.org/results/Apple-iOS-15-Simulator-Debug-WK2-Tests/250732%40main%20(2603)/fast/forms/ios/focus-ring-size-diffs.html

fast/inline/hidpi-outline-auto-with-border-radius-horizontal-ltr.html
https://build.webkit.org/results/Apple-iOS-15-Simulator-Debug-WK2-Tests/250732%40main%20(2603)/fast/inline/hidpi-outline-auto-negative-offset-with-border-radius-diffs.html

fast/inline/hidpi-outline-auto-with-border-radius-horizontal-rtl.html
https://build.webkit.org/results/Apple-iOS-15-Simulator-Debug-WK2-Tests/250732%40main%20(2603)/fast/inline/hidpi-outline-auto-with-border-radius-horizontal-rtl-diffs.html

fast/inline/hidpi-outline-auto-with-border-radius-vertical-ltr.html
https://build.webkit.org/results/Apple-iOS-15-Simulator-Debug-WK2-Tests/250732%40main%20(2603)/fast/inline/hidpi-outline-auto-with-border-radius-vertical-ltr-diffs.html

fast/inline/hidpi-outline-auto-with-border-radius-vertical-rtl.html
https://build.webkit.org/results/Apple-iOS-15-Simulator-Debug-WK2-Tests/250732%40main%20(2603)/fast/inline/hidpi-outline-auto-with-border-radius-vertical-rtl-diffs.html

fast/inline/hidpi-outline-auto-with-fractional-radius.html
https://build.webkit.org/results/Apple-iOS-15-Simulator-Debug-WK2-Tests/250732%40main%20(2603)/fast/inline/hidpi-outline-auto-with-fractional-radius-diffs.html

fast/inline/hidpi-outline-auto-with-one-focusring-rect.html
https://build.webkit.org/results/Apple-iOS-15-Simulator-Debug-WK2-Tests/250732%40main%20(2603)/fast/inline/hidpi-outline-auto-with-one-focusring-rect-diffs.html

[Radar WebKit Bug Importer]

<rdar://problem/93578166>

[Karl Rackler]

I have marked this test as a consistent image failure while this issue is investigated.

[Karl Rackler]

Pull request: https://github.com/WebKit/WebKit/pull/785

[EWS]

Test gardening commit r294484 (250743@main): <https://commits.webkit.org/250743@main>

Reviewed commits have been landed. Closing PR #785 and removing active labels.

[Kimmo Kinnunen]

Pull request: https://github.com/WebKit/WebKit/pull/1177

[EWS]

Committed r295123 (251214@main): <https://commits.webkit.org/251214@main>

Reviewed commits have been landed. Closing PR #1177 and removing active labels.