[Webkit-unassigned] [Bug 240735] New: REGRESSION (r294536): [ macOS Release wk2 ] Twelve webgl/2.0.0/conformance2/textures/image_bitmap_from_image_bitmap/tex are a flaky failure

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Fri May 20 14:20:10 PDT 2022 

https://bugs.webkit.org/show_bug.cgi?id=240735

            Bug ID: 240735
           Summary: REGRESSION (r294536): [ macOS Release wk2 ] Twelve
                    webgl/2.0.0/conformance2/textures/image_bitmap_from_im
                    age_bitmap/tex are a flaky failure
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: rackler at apple.com

Description:
webgl/2.0.0/conformance/textures/image_bitmap_from_image_bitmap/tex-2d-rgb-rgb-unsigned_short_5_6_5.html
webgl/2.0.0/conformance/textures/image_bitmap_from_image_bitmap/tex-2d-rgba-rgba-unsigned_byte.html
webgl/2.0.0/conformance/textures/image_bitmap_from_image_bitmap/tex-2d-rgba-rgba-unsigned_short_4_4_4_4.html
webgl/2.0.0/conformance2/textures/image_bitmap_from_image_bitmap/tex-2d-r11f_g11f_b10f-rgb-unsigned_int_10f_11f_11f_rev.html
webgl/2.0.0/conformance2/textures/image_bitmap_from_image_bitmap/tex-2d-r16f-red-float.html
webgl/2.0.0/conformance2/textures/image_bitmap_from_image_bitmap/tex-2d-r8-red-unsigned_byte.html
webgl/2.0.0/conformance2/textures/image_bitmap_from_image_bitmap/tex-2d-rgb5_a1-rgba-unsigned_short_5_5_5_1.html
webgl/2.0.0/conformance2/textures/image_bitmap_from_image_bitmap/tex-3d-rgb16f-rgb-float.html
webgl/2.0.0/conformance2/textures/image_bitmap_from_image_bitmap/tex-3d-rgb565-rgb-unsigned_short_5_6_5.html
webgl/2.0.0/conformance2/textures/image_bitmap_from_image_bitmap/tex-3d-rgb9_e5-rgb-half_float.html
webgl/2.0.0/conformance2/textures/image_bitmap_from_image_bitmap/tex-3d-rgba32f-rgba-float.html
webgl/2.0.0/conformance2/textures/image_bitmap_from_image_bitmap/tex-3d-rgba8ui-rgba_integer-unsigned_byte.html

The first failure I saw on the dashboard was on 5/20/2022 at r294536. 

REPRODUCTION STEPS
I can reproduce this on r294536, but unable to reproduce it on r294535 or earlier.

Command: 
run-webkit-tests --root 294536 --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 --iterations 50 -f --no-retry webgl/2.0.0/conformance/textures/image_bitmap_from_image_bitmap/tex-2d-rgb-rgb-unsigned_short_5_6_5.html

Result: 
Regressions: Unexpected text-only failures (1)
  webgl/2.0.0/conformance/textures/image_bitmap_from_image_bitmap/tex-2d-rgb-rgb-unsigned_short_5_6_5.html [ Failure ]

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&suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&test=webgl%2F2.0.0%2Fconformance%2Ftextures%2Fimage_bitmap_from_image_bitmap%2Ftex-2d-rgb-rgb-unsigned_short_5_6_5.html&test=webgl%2F2.0.0%2Fconformance%2Ftextures%2Fimage_bitmap_from_image_bitmap%2Ftex-2d-rgba-rgba-unsigned_byte.html&test=webgl%2F2.0.0%2Fconformance%2Ftextures%2Fimage_bitmap_from_image_bitmap%2Ftex-2d-rgba-rgba-unsigned_short_4_4_4_4.html&test=webgl%2F2.0.0%2Fconformance2%2Ftextures%2Fimage_bitmap_from_image_bitmap%2Ftex-2d-r11f_g11f_b10f-rgb-unsigned_int_10f_11f_11f_rev.html&test=webgl%2F2.0.0%2Fconformance2%2Ftextures%2Fimage_bitmap_from_image_bitmap%2Ftex-2d-r16f-red-float.html&test=webgl%2F2.0.0%2Fconformance2%2Ftextures%2Fimage_bitmap_from_image_bitmap%2Ftex-2d-r8-red-unsigned_byte.html&test=webgl%2F2.0.0%2Fconformance2%2Ftextures%2Fimage_bitmap_from_image_bitmap%2Ftex-2d-rgb5_a1-rgba-unsigned_short_5_5_5_1.html&test=webgl%2F2.0.0%2Fconformance2%2Ftextures%2Fimage_bitmap_from_image_bitmap%2Ftex-3d-rgb16f-rgb-float.html&test=webgl%2F2.0.0%2Fconformance2%2Ftextures%2Fimage_bitmap_from_image_bitmap%2Ftex-3d-rgb565-rgb-unsigned_short_5_6_5.html&test=webgl%2F2.0.0%2Fconformance2%2Ftextures%2Fimage_bitmap_from_image_bitmap%2Ftex-3d-rgb9_e5-rgb-half_float.html&test=webgl%2F2.0.0%2Fconformance2%2Ftextures%2Fimage_bitmap_from_image_bitmap%2Ftex-3d-rgba32f-rgba-float.html&test=webgl%2F2.0.0%2Fconformance2%2Ftextures%2Fimage_bitmap_from_image_bitmap%2Ftex-3d-rgba8ui-rgba_integer-unsigned_byte.html&platform=mac&style=release&limit=50000

Diff:
https://build.webkit.org/results/Apple-Monterey-Release-WK2-Tests/250806%40main%20(4184)/webgl/2.0.0/conformance/textures/image_bitmap_from_image_bitmap/tex-2d-rgb-rgb-unsigned_short_5_6_5-diff.txt
https://build.webkit.org/results/Apple-Monterey-Release-WK2-Tests/250806%40main%20(4184)/webgl/2.0.0/conformance/textures/image_bitmap_from_image_bitmap/tex-2d-rgba-rgba-unsigned_byte-diff.txt
https://build.webkit.org/results/Apple-Monterey-Release-WK2-Tests/250806%40main%20(4184)/webgl/2.0.0/conformance/textures/image_bitmap_from_image_bitmap/tex-2d-rgba-rgba-unsigned_short_4_4_4_4-diff.txt
https://build.webkit.org/results/Apple-Monterey-Release-WK2-Tests/250806%40main%20(4184)/webgl/2.0.0/conformance2/textures/image_bitmap_from_image_bitmap/tex-2d-r11f_g11f_b10f-rgb-unsigned_int_10f_11f_11f_rev-diff.txt
https://build.webkit.org/results/Apple-Monterey-Release-WK2-Tests/250806%40main%20(4184)/webgl/2.0.0/conformance2/textures/image_bitmap_from_image_bitmap/tex-2d-r16f-red-float-diff.txt
https://build.webkit.org/results/Apple-Monterey-Release-WK2-Tests/250806%40main%20(4184)/webgl/2.0.0/conformance2/textures/image_bitmap_from_image_bitmap/tex-2d-r8-red-unsigned_byte-diff.txt
https://build.webkit.org/results/Apple-Monterey-Release-WK2-Tests/250806%40main%20(4184)/webgl/2.0.0/conformance2/textures/image_bitmap_from_image_bitmap/tex-2d-rgb5_a1-rgba-unsigned_short_5_5_5_1-diff.txt
https://build.webkit.org/results/Apple-Monterey-Release-WK2-Tests/250806%40main%20(4184)/webgl/2.0.0/conformance2/textures/image_bitmap_from_image_bitmap/tex-3d-rgb16f-rgb-float-diff.txt
https://build.webkit.org/results/Apple-Monterey-Release-WK2-Tests/250806%40main%20(4184)/webgl/2.0.0/conformance2/textures/image_bitmap_from_image_bitmap/tex-3d-rgb565-rgb-unsigned_short_5_6_5-diff.txt
https://build.webkit.org/results/Apple-Monterey-Release-WK2-Tests/250806%40main%20(4184)/webgl/2.0.0/conformance2/textures/image_bitmap_from_image_bitmap/tex-3d-rgb9_e5-rgb-half_float-diff.txt
https://build.webkit.org/results/Apple-Monterey-Release-WK2-Tests/250806%40main%20(4184)/webgl/2.0.0/conformance2/textures/image_bitmap_from_image_bitmap/tex-3d-rgba32f-rgba-float-diff.txt
https://build.webkit.org/results/Apple-Monterey-Release-WK2-Tests/250806%40main%20(4184)/webgl/2.0.0/conformance2/textures/image_bitmap_from_image_bitmap/tex-3d-rgba8ui-rgba_integer-unsigned_byte-diff.txt

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