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script: Fix IIRFilter crash on silent blocks and add crash test#41091

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Taym95:fix-iir-filter-silence-crashs
Dec 6, 2025
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script: Fix IIRFilter crash on silent blocks and add crash test#41091
jdm merged 1 commit intoservo:mainfrom
Taym95:fix-iir-filter-silence-crashs

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@Taym95 Taym95 commented Dec 5, 2025 •
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Fix IIRFilter crash on silent blocks and add crash test.

Before fix: let blocks: SmallVec<[Block; 1]> = SmallVec::new(); followed by blocks.as_slice().iter().map(.), Because blocks was empty, the iterator never produced anything, so the resulting Chunk had zero blocks and caused:

panic: index out of bounds: the len is 0 but the index is 0 (thread AudioRenderThread, at /home/runner/.cargo/git/checkouts/media-9074def3f0bdf023/b0d3b74/audio/iir_filter_node.rs:173)

Now: we still use SmallVec<[Block; 1]>, but we actually push a block into it before returning: create Block::default(), call explicit_silence() on it, blocks.push(block), then Chunk { blocks }. This ensures the chunk contains one explicit silent block, which is what downstream code expects.

Actual fix is in:
servo/media#477

This PR uses the new media version containing fix and added crash test.

Testing: added crash test.
Fixes: #41085

@servo-highfive servo-highfive added the S-awaiting-review There is new code that needs to be reviewed. label Dec 5, 2025
@Taym95 Taym95 added the T-linux-wpt Do a try run of the WPT label Dec 5, 2025
@github-actions github-actions bot removed the T-linux-wpt Do a try run of the WPT label Dec 5, 2025
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github-actions bot commented Dec 5, 2025

🔨 Triggering try run (#19978244364) for Linux (WPT)

@Taym95 Taym95 force-pushed the fix-iir-filter-silence-crashs branch from 864c4c7 to 3de4712 Compare December 5, 2025 22:52
@Taym95 Taym95 force-pushed the fix-iir-filter-silence-crashs branch from 3de4712 to 23ad2a5 Compare December 5, 2025 23:22
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github-actions bot commented Dec 5, 2025

Test results for linux-wpt from try job (#19978244364):

Flaky unexpected result (32)
  • OK /IndexedDB/idbfactory_open.any.html
    • FAIL [expected PASS] subtest: Calling open() with version argument 1.5 should not throw.

      assert_equals: version expected 1 but got 9007199254740991

  • OK /_mozilla/css/offset_properties_inline.html (#40543)
    • FAIL [expected PASS] subtest: offsetTop

      assert_equals: offsetTop of #inline-1 should be 0. expected 0 but got -1

    • FAIL [expected PASS] subtest: offsetLeft

      assert_equals: offsetLeft of #inline-2 should be 40. expected 40 but got 25

  • TIMEOUT [expected OK] /_mozilla/mozilla/img_load_more_than_cache.html
  • CRASH [expected PASS] /_mozilla/shadow-dom/move-element-with-ua-shadow-tree-crash.html (#39473)
  • OK /_mozilla/webxr/create_session.https.html
    • FAIL [expected PASS] subtest: create_session

      can't access property "simulateDeviceConnection", navigator.xr.test is undefined

  • ERROR [expected TIMEOUT] /_mozilla/webxr/sessionavailable.https.html
  • TIMEOUT [expected PASS] /css/css-backgrounds/background-size-034.html
  • TIMEOUT [expected FAIL] /css/css-backgrounds/background-size/vector/background-size-vector-003.html
  • OK /css/css-fonts/generic-family-keywords-003.html (#38994)
    • PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted fantasy (drawing text in a canvas)
    • PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted monospace (drawing text in a canvas)
    • PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted system-ui (drawing text in a canvas)
    • PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(fangsong) (drawing text in a canvas)
    • PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(khmer-mul) (drawing text in a canvas)
    • PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(nastaliq) (drawing text in a canvas)
    • PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted ui-serif (drawing text in a canvas)
  • OK /custom-elements/form-associated/ElementInternals-setFormValue.html (#29174)
    • PASS [expected FAIL] subtest: Single value - empty name exists
  • OK /fetch/metadata/window-open.https.sub.html (#40339)
    • FAIL [expected PASS] subtest: Same-site window, forced, reloaded

      The operation is insecure.

  • CRASH [expected ERROR] /html/anonymous-iframe/fenced-frame.tentative.https.window.html
  • CRASH [expected ERROR] /html/browsers/browsing-the-web/history-traversal/pageswap/pageswap-reload-navigation.html
  • OK /html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-window-open.html (#28691)
    • FAIL [expected PASS] subtest: load event does not fire on window.open('about:blank')

      assert_unreached: load should not be fired Reached unreachable code

  • TIMEOUT [expected OK] /html/interaction/focus/the-autofocus-attribute/autofocus-dialog.html (#29087)
    • TIMEOUT [expected FAIL] subtest: &lt;dialog&gt;-contained autofocus element gets focused when the dialog is shown

      Test timed out

  • TIMEOUT [expected OK] /html/interaction/focus/the-autofocus-attribute/document-with-fragment-top.html (#28259)
    • TIMEOUT [expected FAIL] subtest: Autofocus elements in top-level browsing context's documents with "top" fragments should work.

      Test timed out

  • OK /html/semantics/forms/form-submission-0/jsurl-form-submit.tentative.html (#36489)
    • PASS [expected FAIL] subtest: Verifies that form submissions scheduled inside javascript: urls take precedence over the javascript: url's return value.
  • OK /html/semantics/forms/form-submission-0/multipart-formdata.window.html (#28725)
    • FAIL [expected PASS] subtest: multipart/form-data: Basic test (formdata event)

      assert_equals: expected "\r\nContent-Disposition: form-data; name=\"basic\"\r\n\r\ntest\r\n--\r\n" but got ""

  • OK /html/semantics/forms/form-submission-0/text-plain.window.html (#28687)
    • FAIL [expected PASS] subtest: text/plain: Basic test (formdata event)

      assert_equals: expected "basic=test\r\n" but got ""

    • PASS [expected FAIL] subtest: text/plain: 0x00 in filename (formdata event)
  • OK /html/semantics/forms/form-submission-0/urlencoded2.window.html (#28687)
    • FAIL [expected PASS] subtest: application/x-www-form-urlencoded: Basic File test (normal form)

      assert_equals: expected "basic=file-test.txt" but got ""

    • PASS [expected FAIL] subtest: application/x-www-form-urlencoded: 0x00 in name (normal form)
    • PASS [expected FAIL] subtest: application/x-www-form-urlencoded: 0x00 in value (formdata event)
  • OK /html/semantics/scripting-1/the-script-element/module/dynamic-import/blob-url.any.worker.html (#33909)
    • FAIL [expected PASS] subtest: Revoking a blob URL immediately after calling import will not fail

      promise_test: Unhandled rejection with value: object "TypeError: Dynamic import failed"

  • OK /html/webappapis/user-prompts/print-during-unload.html (#35944)
    • FAIL [expected PASS] subtest: print() during unload

      assert_array_equals: expected property 1 to be "destination" but got "error: window.print is not a function" (expected array ["start", "destination"] got ["start", "error: window.print is not a function"])

  • FAIL [expected PASS] /png/apng/fcTL-blend-source-transparent.html (#39520)
  • OK /preload/link-header-preload-delay-onload.html (#39622)
    • FAIL [expected PASS] subtest: Makes sure that Link headers preload resources and block window.onload after resource discovery

      assert_true: expected true got false

  • OK /service-workers/service-worker/fetch-event.https.html (#36234)
    • PASS [expected FAIL] subtest: Service Worker falls back to network in fetch event with POST form
  • CRASH [expected OK] /trusted-types/Node-multiple-arguments.html
  • TIMEOUT /trusted-types/trusted-types-navigation.html?06-10 (#37920)
    • PASS [expected FAIL] subtest: Navigate a frame via anchor with javascript:-urls in report-only mode.
  • OK [expected TIMEOUT] /trusted-types/trusted-types-navigation.html?31-35 (#38034)
    • PASS [expected TIMEOUT] subtest: Navigate a frame via form-submission with javascript:-urls w/ default policy in report-only mode.
    • FAIL [expected NOTRUN] subtest: Navigate a window via form-submission with javascript:-urls w/ a default policy throwing an exception in enforcing mode.

      promise_test: Unhandled rejection with value: "Unexpected message received: \"No securitypolicyviolation reported!\""

    • FAIL [expected NOTRUN] subtest: Navigate a window via form-submission with javascript:-urls w/ a default policy throwing an exception in report-only mode.

      promise_test: Unhandled rejection with value: "Unexpected message received: \"No securitypolicyviolation reported!\""

    • FAIL [expected NOTRUN] subtest: Navigate a window via form-submission with javascript:-urls w/ a default policy making the URL invalid in enforcing mode.

      promise_test: Unhandled rejection with value: "Unexpected message received: \"No securitypolicyviolation reported!\""

  • CRASH [expected OK] /uievents/idlharness.window.html
  • OK /wasm/webapi/abort.any.html (#39966)
    • FAIL [expected PASS] subtest: instantiateStreaming() asynchronously racing with abort should succeed or reject with AbortError

      assert_equals: expected "AbortError" but got "CompileError"

  • CRASH [expected OK] /wasm/webapi/esm-integration/wasm-to-wasm-link-error.tentative.html
  • OK /webdriver/tests/classic/dismiss_alert/dismiss.py (#39098)
    • FAIL [expected PASS] subtest: test_dismiss_in_popup_window

      AssertionError: no such alert (404): No user prompt is currently active.

Stable unexpected results that are known to be intermittent (19)
  • OK /IndexedDB/idbobjectstore_getAll.any.html (#39276)
    • PASS [expected FAIL] subtest: Get all values with transaction.commit()
  • OK /IndexedDB/idbobjectstore_getAll.any.worker.html (#39400)
    • PASS [expected FAIL] subtest: Get all values with transaction.commit()
  • FAIL [expected PASS] /_mozilla/mozilla/sslfail.html (#10760)
  • TIMEOUT [expected OK] /_mozilla/mozilla/window_resize_event.html (#36741)
    • TIMEOUT [expected PASS] subtest: Popup onresize event fires after resizeTo

      Test timed out

  • OK /_webgl/conformance/textures/misc/texture-upload-size.html (#21770)
    • PASS [expected FAIL] subtest: WebGL test #45
    • PASS [expected FAIL] subtest: WebGL test #47
    • PASS [expected FAIL] subtest: WebGL test #49
    • PASS [expected FAIL] subtest: WebGL test #51
    • FAIL [expected PASS] subtest: WebGL test #53

      assert_true: Texture was smaller than the expected size 2x2 expected true got false

    • FAIL [expected PASS] subtest: WebGL test #55

      assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : when calling texSubImage2D with the same texture upload with offset 1, 1 expected true got false

    • FAIL [expected PASS] subtest: WebGL test #57

      assert_true: Texture was smaller than the expected size 2x2 expected true got false

    • FAIL [expected PASS] subtest: WebGL test #59

      assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : when calling texSubImage2D with the same texture upload with offset 1, 1 expected true got false

    • PASS [expected FAIL] subtest: WebGL test #61
    • PASS [expected FAIL] subtest: WebGL test #63
    • And 10 more unexpected results...
  • OK /content-security-policy/frame-ancestors/frame-ancestors-path-ignored.window.html (#36468)
    • FAIL [expected PASS] subtest: A 'frame-ancestors' CSP directive with a URL that includes a path should be ignored.

      assert_unreached: The IFrame should have been blocked (or cross-origin). It wasn't. Reached unreachable code

  • OK /css/css-cascade/layer-font-face-override.html (#35935)
    • FAIL [expected PASS] subtest: @font-face override update with appended sheet 1

      assert_equals: expected "80px" but got "38.3166666666667px"

    • FAIL [expected PASS] subtest: @font-face override update with appended sheet 2

      assert_equals: expected "80px" but got "38.3166666666667px"

  • OK /css/css-fonts/generic-family-keywords-001.html (#37467)
    • FAIL [expected PASS] subtest: @font-face matching for quoted and unquoted generic(fangsong)

      assert_equals: quoted generic(fangsong) matches  @font-face rule expected 50 but got 30

    • FAIL [expected PASS] subtest: @font-face matching for quoted and unquoted generic(khmer-mul)

      assert_equals: quoted generic(khmer-mul) matches  @font-face rule expected 50 but got 30

  • OK /css/css-fonts/generic-family-keywords-002.html (#40929)
    • PASS [expected FAIL] subtest: font-family: -webkit-serif treated as &lt;font-family&gt;, not &lt;generic-name&gt;
    • PASS [expected FAIL] subtest: font-family: -webkit-sans-serif treated as &lt;font-family&gt;, not &lt;generic-name&gt;
    • PASS [expected FAIL] subtest: font-family: -webkit-cursive treated as &lt;font-family&gt;, not &lt;generic-name&gt;
    • PASS [expected FAIL] subtest: font-family: -webkit-fantasy treated as &lt;font-family&gt;, not &lt;generic-name&gt;
    • PASS [expected FAIL] subtest: font-family: -webkit-monospace treated as &lt;font-family&gt;, not &lt;generic-name&gt;
    • PASS [expected FAIL] subtest: font-family: -webkit-system-ui treated as &lt;font-family&gt;, not &lt;generic-name&gt;
    • PASS [expected FAIL] subtest: font-family: -webkit-math treated as &lt;font-family&gt;, not &lt;generic-name&gt;
    • FAIL [expected PASS] subtest: font-family: -webkit-generic(fangsong) treated as &lt;font-family&gt;, not &lt;generic-name&gt;

      assert_equals: expected 50 but got 30

    • FAIL [expected PASS] subtest: font-family: -webkit-generic(kai) treated as &lt;font-family&gt;, not &lt;generic-name&gt;

      assert_equals: expected 50 but got 30

    • FAIL [expected PASS] subtest: font-family: -webkit-generic(khmer-mul) treated as &lt;font-family&gt;, not &lt;generic-name&gt;

      assert_equals: expected 50 but got 30

    • And 12 more unexpected results...
  • OK /fetch/metadata/generated/css-font-face.https.sub.tentative.html (#32732)
    • FAIL [expected PASS] subtest: sec-fetch-storage-access - Cross-site

      promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."

  • OK /fetch/metadata/generated/css-font-face.sub.tentative.html (#34624)
    • FAIL [expected PASS] subtest: sec-fetch-storage-access - Not sent to non-trustworthy same-origin destination

      promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."

    • FAIL [expected PASS] subtest: sec-fetch-storage-access - Not sent to non-trustworthy same-site destination

      promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."

  • OK /fetch/metadata/generated/element-img-environment-change.https.sub.html (#30111)
    • PASS [expected FAIL] subtest: sec-fetch-site - Same origin, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Same-Origin -&gt; Cross-Site -&gt; Same-Origin redirect, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Cross-Site -&gt; Same Origin, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Cross-Site -&gt; Cross-Site, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Same-Origin -&gt; Same-Site, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Same-Origin -&gt; Cross-Site, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Same-Site -&gt; Same-Site, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Same-Site -&gt; Cross-Site, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-mode - no attributes
    • PASS [expected FAIL] subtest: sec-fetch-mode - attributes: crossorigin
    • And 4 more unexpected results...
  • OK /fetch/metadata/generated/element-img-environment-change.sub.html (#30111)
    • PASS [expected FAIL] subtest: sec-fetch-site - Not sent to non-trustworthy same-origin destination, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Not sent to non-trustworthy same-site destination, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Not sent to non-trustworthy cross-site destination, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-mode - Not sent to non-trustworthy same-site destination, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-mode - Not sent to non-trustworthy cross-site destination, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-dest - Not sent to non-trustworthy same-site destination, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-dest - Not sent to non-trustworthy cross-site destination, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-user - Not sent to non-trustworthy same-site destination, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-storage-access - Not sent to non-trustworthy same-site destination, no attributes
  • ERROR /fetch/metadata/generated/serviceworker.https.sub.html (#36247)
    • FAIL [expected PASS] subtest: sec-fetch-site - Same origin, no options - registration

      promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."

  • TIMEOUT [expected OK] /html/interaction/focus/the-autofocus-attribute/supported-elements.html (#24145)
    • TIMEOUT [expected FAIL] subtest: Element with tabindex should support autofocus

      Test timed out

    • NOTRUN [expected FAIL] subtest: Host element with delegatesFocus should support autofocus
    • NOTRUN [expected FAIL] subtest: Host element with delegatesFocus including no focusable descendants should be skipped
    • NOTRUN [expected FAIL] subtest: Area element should support autofocus
  • OK /navigation-timing/test-navigation-type-reload.html (#33334)
    • FAIL [expected PASS] subtest: Reload domContentLoadedEventEnd &gt; Original domContentLoadedEventEnd

      assert_true: Reload domContentLoadedEventEnd &gt; Original domContentLoadedEventEnd expected true got false

  • OK /preload/preload-error.sub.html (#37177)
    • PASS [expected FAIL] subtest: 404 (fetch): main
    • FAIL [expected PASS] subtest: CORS (fetch): main

      assert_greater_than: http://not-web-platform.test:8000/preload/resources/dummy.xml?pipe=header%28Access-Control-Allow-Origin%2C*%29&amp;label=fetch should be loaded expected a number greater than 0 but got 0

  • OK /resource-timing/buffer-full-add-then-clear.html (#40819)
    • PASS [expected FAIL] subtest: Test that if the buffer is cleared after entries were added to the secondary buffer, those entries make it into the primary one
  • OK [expected ERROR] /webxr/render_state_update.https.html (#27535)

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github-actions bot commented Dec 5, 2025

✨ Try run (#19978244364) succeeded.

@servo-wpt-sync servo-wpt-sync mentioned this pull request Dec 5, 2025
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servo-wpt-sync commented Dec 5, 2025

🤖 Opened new upstream WPT pull request (web-platform-tests/wpt#56542) with upstreamable changes.

@Taym95 Taym95 force-pushed the fix-iir-filter-silence-crashs branch from 23ad2a5 to c4869e3 Compare December 6, 2025 15:44
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servo-wpt-sync commented Dec 6, 2025

📝 Transplanted new upstreamable changes to existing upstream WPT pull request (web-platform-tests/wpt#56542).

@Taym95 Taym95 requested a review from jdm December 6, 2025 15:53
@servo-highfive servo-highfive removed the S-awaiting-review There is new code that needs to be reviewed. label Dec 6, 2025
@jdm jdm added the T-linux-wpt Do a try run of the WPT label Dec 6, 2025
@github-actions github-actions bot removed the T-linux-wpt Do a try run of the WPT label Dec 6, 2025
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github-actions bot commented Dec 6, 2025

🔨 Triggering try run (#19991318796) for Linux (WPT)

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github-actions bot commented Dec 6, 2025

Test results for linux-wpt from try job (#19991318796):

Flaky unexpected result (28)
  • OK /IndexedDB/idbfactory_open.any.html
    • FAIL [expected PASS] subtest: Calling open() with version argument 1.5 should not throw.

      assert_equals: version expected 1 but got 9007199254740991

  • PASS [expected FAIL] /_mozilla/css/linear_gradients_reverse_a.html
  • OK /_mozilla/webxr/create_session.https.html
    • FAIL [expected PASS] subtest: create_session

      can't access property "simulateDeviceConnection", navigator.xr.test is undefined

  • OK /_mozilla/webxr/obtain_frame.https.html
    • FAIL [expected PASS] subtest: obtain_frame

      promise_test: Unhandled rejection with value: object "TypeError: can't access property "simulateDeviceConnection", navigator.xr.test is undefined"

  • ERROR [expected TIMEOUT] /_mozilla/webxr/sessionavailable.https.html
  • OK /_webgl/conformance/textures/misc/texture-upload-size.html (#21770)
    • PASS [expected FAIL] subtest: WebGL test #45
    • PASS [expected FAIL] subtest: WebGL test #47
    • PASS [expected FAIL] subtest: WebGL test #49
    • PASS [expected FAIL] subtest: WebGL test #51
    • FAIL [expected PASS] subtest: WebGL test #53

      assert_true: Texture was smaller than the expected size 2x2 expected true got false

    • FAIL [expected PASS] subtest: WebGL test #55

      assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : when calling texSubImage2D with the same texture upload with offset 1, 1 expected true got false

    • FAIL [expected PASS] subtest: WebGL test #57

      assert_true: Texture was smaller than the expected size 2x2 expected true got false

    • FAIL [expected PASS] subtest: WebGL test #59

      assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : when calling texSubImage2D with the same texture upload with offset 1, 1 expected true got false

    • PASS [expected FAIL] subtest: WebGL test #61
    • PASS [expected FAIL] subtest: WebGL test #63
    • And 6 more unexpected results...
  • CRASH [expected OK] /_webgl/conformance2/extensions/webgl-stencil-texturing.html
  • CRASH [expected OK] /_webgl/conformance2/wasm/readpixels-2gb-in-4gb-wasm-memory.html
  • TIMEOUT /content-security-policy/inheritance/location-reload.html (#38983)
    • FAIL [expected PASS] subtest: location.reload() of empty iframe.

      assert_equals: Image should be blocked by CSP after reload. expected "img blocked" but got "img loaded"

  • ERROR [expected OK] /cookies/partitioned-cookies/partitioned-cookies-a-b-a-embed.tentative.https.html
  • OK /css/css-fonts/generic-family-keywords-003.html (#38994)
    • PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted monospace (drawing text in a canvas)
    • PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(khmer-mul) (drawing text in a canvas)
    • PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted ui-monospace (drawing text in a canvas)
  • ERROR [expected OK] /focus/focus-event-after-switching-iframes.sub.html (#40368)
  • OK /html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-window-open.html (#28691)
    • FAIL [expected PASS] subtest: load event does not fire on window.open('about:blank')

      assert_unreached: load should not be fired Reached unreachable code

  • TIMEOUT [expected OK] /html/interaction/focus/the-autofocus-attribute/update-the-rendering.html (#24145)
    • TIMEOUT [expected FAIL] subtest: "Flush autofocus candidates" should be happen before a scroll event and animation frame callbacks

      Test timed out

  • OK [expected TIMEOUT] /html/semantics/embedded-content/media-elements/src_object_blob.html (#40340)
    • PASS [expected TIMEOUT] subtest: HTMLMediaElement.srcObject blob
  • OK /html/semantics/forms/form-submission-0/jsurl-form-submit.tentative.html (#36489)
    • PASS [expected FAIL] subtest: Verifies that form submissions scheduled inside javascript: urls take precedence over the javascript: url's return value.
  • OK /html/semantics/forms/form-submission-0/multipart-formdata.window.html (#28725)
    • PASS [expected FAIL] subtest: multipart/form-data: 0x00 in name (normal form)
    • PASS [expected FAIL] subtest: multipart/form-data: 0x00 in value (normal form)
    • PASS [expected FAIL] subtest: multipart/form-data: \r\n in value (formdata event)
    • PASS [expected FAIL] subtest: multipart/form-data: double quote in value (formdata event)
  • OK /html/semantics/forms/form-submission-0/text-plain.window.html (#28687)
    • FAIL [expected PASS] subtest: text/plain: Basic test (formdata event)

      assert_equals: expected "basic=test\r\n" but got ""

    • FAIL [expected PASS] subtest: text/plain: Basic File test (normal form)

      assert_equals: expected "basic=file-test.txt\r\n" but got ""

    • PASS [expected FAIL] subtest: text/plain: \r\n in name (normal form)
  • OK /html/semantics/forms/form-submission-0/urlencoded2.window.html (#28687)
    • FAIL [expected PASS] subtest: application/x-www-form-urlencoded: Basic File test (normal form)

      assert_equals: expected "basic=file-test.txt" but got ""

    • PASS [expected FAIL] subtest: application/x-www-form-urlencoded: 0x00 in value (normal form)
    • PASS [expected FAIL] subtest: application/x-www-form-urlencoded: 0x00 in filename (normal form)
    • PASS [expected FAIL] subtest: application/x-www-form-urlencoded: \r\n in name (normal form)
    • PASS [expected FAIL] subtest: application/x-www-form-urlencoded: \r\n in value (formdata event)
    • PASS [expected FAIL] subtest: application/x-www-form-urlencoded: backslash in name (formdata event)
  • OK /html/semantics/scripting-1/the-script-element/execution-timing/077.html (#22139)
    • FAIL [expected PASS] subtest: adding several types of scripts through the DOM and removing some of them confuses scheduler

      assert_array_equals: expected property 1 to be "Script #1 ran" but got "Script #3 ran" (expected array ["Script #2 ran", "Script #1 ran", "Script #3 ran", "Script #4 ran"] got ["Script #2 ran", "Script #3 ran", "Script #4 ran", "Script #1 ran"])

  • CRASH [expected OK] /import-maps/multiple-import-maps/resolution-consistency-in-module-tree-inline.html
  • OK /preload/preload-error.sub.html (#37177)
    • PASS [expected FAIL] subtest: 404 (fetch): main
  • OK /preload/preload-xhr.html (#39092)
    • FAIL [expected PASS] subtest: Make an XHR request immediately after creating link rel=preload.

      assert_equals: resources/dummy.xml?token=270a2c09-e904-4838-835e-b3944fcbd568 expected 1 but got 0

  • TIMEOUT /trusted-types/trusted-types-navigation.html?06-10 (#37920)
    • TIMEOUT [expected FAIL] subtest: Navigate a frame via anchor with javascript:-urls in report-only mode.

      Test timed out

    • NOTRUN [expected TIMEOUT] subtest: Navigate a frame via anchor with javascript:-urls w/ default policy in report-only mode.
  • CRASH [expected OK] /trusted-types/trusted-types-reporting-for-DedicatedWorker-ServiceWorkerContainer-register.https.html
  • CRASH [expected OK] /uievents/idlharness.window.html
  • CRASH [expected ERROR] /wasm/webapi/invalid-code.any.sharedworker.html
  • CRASH [expected OK] /webaudio/the-audio-api/the-audioparam-interface/k-rate-constant-source.html
Stable unexpected results that are known to be intermittent (22)
  • OK /IndexedDB/idbobjectstore_getAll.any.html (#39276)
    • PASS [expected FAIL] subtest: Get all values with transaction.commit()
  • OK /IndexedDB/idbobjectstore_getAll.any.worker.html (#39400)
    • PASS [expected FAIL] subtest: Get all values with transaction.commit()
  • FAIL [expected PASS] /_mozilla/mozilla/sslfail.html (#10760)
  • TIMEOUT [expected OK] /_mozilla/mozilla/window_resize_event.html (#36741)
    • TIMEOUT [expected PASS] subtest: Popup onresize event fires after resizeTo

      Test timed out

  • OK /css/css-cascade/layer-cssom-order-reverse.html (#36094)
    • PASS [expected FAIL] subtest: Delete layer invalidates @font-face
  • OK /css/css-cascade/layer-font-face-override.html (#35935)
    • FAIL [expected PASS] subtest: @font-face override update with appended sheet 1

      assert_equals: expected "80px" but got "38.3166666666667px"

    • FAIL [expected PASS] subtest: @font-face override update with appended sheet 2

      assert_equals: expected "80px" but got "38.3166666666667px"

  • OK /css/css-fonts/generic-family-keywords-001.html (#37467)
    • FAIL [expected PASS] subtest: @font-face matching for quoted and unquoted generic(fangsong)

      assert_equals: quoted generic(fangsong) matches  @font-face rule expected 50 but got 30

    • FAIL [expected PASS] subtest: @font-face matching for quoted and unquoted generic(khmer-mul)

      assert_equals: quoted generic(khmer-mul) matches  @font-face rule expected 50 but got 30

  • OK /css/css-fonts/generic-family-keywords-002.html (#40929)
    • PASS [expected FAIL] subtest: font-family: -webkit-serif treated as &lt;font-family&gt;, not &lt;generic-name&gt;
    • PASS [expected FAIL] subtest: font-family: -webkit-sans-serif treated as &lt;font-family&gt;, not &lt;generic-name&gt;
    • PASS [expected FAIL] subtest: font-family: -webkit-cursive treated as &lt;font-family&gt;, not &lt;generic-name&gt;
    • PASS [expected FAIL] subtest: font-family: -webkit-fantasy treated as &lt;font-family&gt;, not &lt;generic-name&gt;
    • PASS [expected FAIL] subtest: font-family: -webkit-monospace treated as &lt;font-family&gt;, not &lt;generic-name&gt;
    • PASS [expected FAIL] subtest: font-family: -webkit-system-ui treated as &lt;font-family&gt;, not &lt;generic-name&gt;
    • PASS [expected FAIL] subtest: font-family: -webkit-math treated as &lt;font-family&gt;, not &lt;generic-name&gt;
    • FAIL [expected PASS] subtest: font-family: -webkit-generic(fangsong) treated as &lt;font-family&gt;, not &lt;generic-name&gt;

      assert_equals: expected 50 but got 30

    • FAIL [expected PASS] subtest: font-family: -webkit-generic(kai) treated as &lt;font-family&gt;, not &lt;generic-name&gt;

      assert_equals: expected 50 but got 30

    • FAIL [expected PASS] subtest: font-family: -webkit-generic(khmer-mul) treated as &lt;font-family&gt;, not &lt;generic-name&gt;

      assert_equals: expected 50 but got 30

    • And 12 more unexpected results...
  • OK /fetch/metadata/generated/css-font-face.https.sub.tentative.html (#32732)
    • PASS [expected FAIL] subtest: sec-fetch-mode
    • PASS [expected FAIL] subtest: sec-fetch-user
    • FAIL [expected PASS] subtest: sec-fetch-storage-access - Cross-site

      promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."

  • OK /fetch/metadata/generated/css-font-face.sub.tentative.html (#34624)
    • FAIL [expected PASS] subtest: sec-fetch-storage-access - Not sent to non-trustworthy same-origin destination

      promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."

    • FAIL [expected PASS] subtest: sec-fetch-storage-access - Not sent to non-trustworthy same-site destination

      promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."

    • PASS [expected FAIL] subtest: sec-fetch-storage-access - Not sent to non-trustworthy cross-site destination
  • OK /fetch/metadata/generated/element-img-environment-change.https.sub.html (#30111)
    • PASS [expected FAIL] subtest: sec-fetch-site - Same origin, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Same-Origin -&gt; Cross-Site -&gt; Same-Origin redirect, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Cross-Site -&gt; Same Origin, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Cross-Site -&gt; Cross-Site, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Same-Origin -&gt; Same-Site, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Same-Origin -&gt; Cross-Site, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Same-Site -&gt; Same-Site, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Same-Site -&gt; Cross-Site, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-mode - no attributes
    • PASS [expected FAIL] subtest: sec-fetch-mode - attributes: crossorigin
    • And 4 more unexpected results...
  • OK /fetch/metadata/generated/element-img-environment-change.sub.html (#30111)
    • PASS [expected FAIL] subtest: sec-fetch-site - Not sent to non-trustworthy same-origin destination, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Not sent to non-trustworthy same-site destination, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Not sent to non-trustworthy cross-site destination, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-mode - Not sent to non-trustworthy same-site destination, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-mode - Not sent to non-trustworthy cross-site destination, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-dest - Not sent to non-trustworthy same-site destination, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-dest - Not sent to non-trustworthy cross-site destination, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-user - Not sent to non-trustworthy same-site destination, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-storage-access - Not sent to non-trustworthy same-site destination, no attributes
  • ERROR /fetch/metadata/generated/serviceworker.https.sub.html (#36247)
    • FAIL [expected PASS] subtest: sec-fetch-site - Same origin, no options - registration

      promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."

  • OK /html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-click.html (#28697)
    • PASS [expected FAIL] subtest: aElement.click() before the load event must NOT replace
  • OK /html/browsers/history/the-history-interface/traverse_the_history_4.html (#21383)
    • PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted
  • OK [expected TIMEOUT] /html/infrastructure/urls/base-url/document-base-url-window-initiator-is-not-opener.https.window.html (#30970)
  • OK /html/interaction/focus/the-autofocus-attribute/supported-elements.html (#24145)
    • PASS [expected NOTRUN] subtest: Non-HTMLElement should not support autofocus
  • TIMEOUT [expected ERROR] /html/semantics/links/links-created-by-a-and-area-elements/target_blank_implicit_noopener_base.html (#40347)
  • OK /navigation-timing/test-navigation-type-reload.html (#33334)
    • FAIL [expected PASS] subtest: Reload domContentLoadedEventEnd &gt; Original domContentLoadedEventEnd

      assert_true: Reload domContentLoadedEventEnd &gt; Original domContentLoadedEventEnd expected true got false

  • TIMEOUT /trusted-types/trusted-types-navigation.html?26-30 (#38807)
    • PASS [expected TIMEOUT] subtest: Navigate a window via form-submission with javascript:-urls in report-only mode.
    • PASS [expected NOTRUN] subtest: Navigate a window via form-submission with javascript:-urls w/ default policy in report-only mode.
    • PASS [expected NOTRUN] subtest: Navigate a frame via form-submission with javascript:-urls in enforcing mode.
    • TIMEOUT [expected NOTRUN] subtest: Navigate a frame via form-submission with javascript:-urls w/ default policy in enforcing mode.

      Test timed out

  • TIMEOUT [expected OK] /webstorage/localstorage-about-blank-3P-iframe-opens-3P-window.partitioned.html (#29053)
    • TIMEOUT [expected PASS] subtest: StorageKey: test 3P about:blank window opened from a 3P iframe

      Test timed out

  • OK [expected ERROR] /webxr/render_state_update.https.html (#27535)

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github-actions bot commented Dec 6, 2025

✨ Try run (#19991318796) succeeded.

@Taym95 Taym95 force-pushed the fix-iir-filter-silence-crashs branch from c4869e3 to 4e099f7 Compare December 6, 2025 19:09
@servo-highfive servo-highfive added S-awaiting-review There is new code that needs to be reviewed. S-needs-rebase There are merge conflict errors. labels Dec 6, 2025
@Taym95 Taym95 enabled auto-merge December 6, 2025 19:10
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servo-wpt-sync commented Dec 6, 2025

📝 Transplanted new upstreamable changes to existing upstream WPT pull request (web-platform-tests/wpt#56542).

@mrobinson mrobinson changed the title Fix IIRFilter crash on silent blocks and add crash test script: Fix IIRFilter crash on silent blocks and add crash test Dec 6, 2025
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mrobinson commented Dec 6, 2025

@Taym95 Do you mind explaining what was wrong and what the fix did to fix this in the PR title and description before landing? Thanks.

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servo-wpt-sync commented Dec 6, 2025

✍ Updated existing upstream WPT pull request (web-platform-tests/wpt#56542) title and body.

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servo-wpt-sync commented Dec 6, 2025

✍ Updated existing upstream WPT pull request (web-platform-tests/wpt#56542) title and body.

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servo-wpt-sync commented Dec 6, 2025

✍ Updated existing upstream WPT pull request (web-platform-tests/wpt#56542) title and body.

@Taym95 Taym95 force-pushed the fix-iir-filter-silence-crashs branch from 4e099f7 to c3375a5 Compare December 6, 2025 19:41
@servo-highfive servo-highfive removed the S-needs-rebase There are merge conflict errors. label Dec 6, 2025
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servo-wpt-sync commented Dec 6, 2025

📝 Transplanted new upstreamable changes to existing upstream WPT pull request (web-platform-tests/wpt#56542).

@Taym95 Taym95 added this pull request to the merge queue Dec 6, 2025
@servo-highfive servo-highfive added the S-awaiting-merge The PR is in the process of compiling and running tests on the automated CI. label Dec 6, 2025
@github-merge-queue github-merge-queue bot removed this pull request from the merge queue due to failed status checks Dec 6, 2025
@servo-highfive servo-highfive added S-tests-failed The changes caused existing tests to fail. and removed S-awaiting-merge The PR is in the process of compiling and running tests on the automated CI. labels Dec 6, 2025
@Taym95 Taym95 added this pull request to the merge queue Dec 6, 2025
@servo-highfive servo-highfive added S-awaiting-merge The PR is in the process of compiling and running tests on the automated CI. and removed S-tests-failed The changes caused existing tests to fail. labels Dec 6, 2025
@jdm jdm removed this pull request from the merge queue due to a manual request Dec 6, 2025
@servo-highfive servo-highfive removed the S-awaiting-merge The PR is in the process of compiling and running tests on the automated CI. label Dec 6, 2025
@Taym95 Taym95 added the T-linux-wpt Do a try run of the WPT label Dec 6, 2025
@github-actions github-actions bot removed the T-linux-wpt Do a try run of the WPT label Dec 6, 2025
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github-actions bot commented Dec 6, 2025

🔨 Triggering try run (#19994237204) for Linux (WPT)

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Test results for linux-wpt from try job (#19994237204):

Flaky unexpected result (37)
  • OK /IndexedDB/idbfactory_open.any.html
    • FAIL [expected PASS] subtest: Calling open() with version argument 1.5 should not throw.

      assert_equals: version expected 1 but got 9007199254740991

  • CRASH [expected PASS] /_mozilla/shadow-dom/move-element-with-ua-shadow-tree-crash.html (#39473)
  • OK /_mozilla/webxr/create_session.https.html
    • FAIL [expected PASS] subtest: create_session

      can't access property "simulateDeviceConnection", navigator.xr.test is undefined

  • OK /_mozilla/webxr/obtain_frame.https.html
    • FAIL [expected PASS] subtest: obtain_frame

      promise_test: Unhandled rejection with value: object "TypeError: can't access property "simulateDeviceConnection", navigator.xr.test is undefined"

  • ERROR [expected TIMEOUT] /_mozilla/webxr/sessionavailable.https.html
  • OK /_webgl/conformance/textures/misc/texture-upload-size.html (#21770)
    • PASS [expected FAIL] subtest: WebGL test #45
    • PASS [expected FAIL] subtest: WebGL test #47
    • PASS [expected FAIL] subtest: WebGL test #49
    • PASS [expected FAIL] subtest: WebGL test #51
    • FAIL [expected PASS] subtest: WebGL test #53

      assert_true: Texture was smaller than the expected size 2x2 expected true got false

    • FAIL [expected PASS] subtest: WebGL test #55

      assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : when calling texSubImage2D with the same texture upload with offset 1, 1 expected true got false

    • FAIL [expected PASS] subtest: WebGL test #57

      assert_true: Texture was smaller than the expected size 2x2 expected true got false

    • FAIL [expected PASS] subtest: WebGL test #59

      assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : when calling texSubImage2D with the same texture upload with offset 1, 1 expected true got false

    • PASS [expected FAIL] subtest: WebGL test #61
    • PASS [expected FAIL] subtest: WebGL test #63
    • And 14 more unexpected results...
  • CRASH [expected OK] /_webgl/conformance2/context/incorrect-context-object-behaviour.html
  • FAIL [expected PASS] /css/css-backgrounds/background-size-041.html
  • OK /css/css-cascade/layer-font-face-override.html (#35935)
    • FAIL [expected PASS] subtest: @font-face override update with appended sheet 1

      assert_equals: expected "80px" but got "38.3166666666667px"

    • FAIL [expected PASS] subtest: @font-face override update with appended sheet 2

      assert_equals: expected "80px" but got "38.3166666666667px"

  • OK /custom-elements/form-associated/ElementInternals-setFormValue.html (#29174)
    • PASS [expected FAIL] subtest: Null value should submit nothing
    • PASS [expected FAIL] subtest: Newline normalization - \r\n in value (formdata)
  • ERROR [expected TIMEOUT] /html/browsers/browsing-the-web/history-traversal/pageswap/pageswap-initial-navigation.html (#40387)
  • OK /html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin.window.html (#29049)
    • PASS [expected FAIL] subtest: Same-origin navigation started from unload handler must be ignored
  • OK /html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-click.html (#28697)
    • PASS [expected FAIL] subtest: aElement.click() before the load event must NOT replace
  • OK /html/browsers/history/the-history-interface/traverse_the_history_2.html (#21383)
    • PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted
  • OK /html/browsers/history/the-history-interface/traverse_the_history_4.html (#21383)
    • PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted
  • OK /html/browsers/history/the-history-interface/traverse_the_history_5.html (#21383)
    • FAIL [expected PASS] subtest: Multiple history traversals, last would be aborted

      assert_array_equals: Pages opened during history navigation expected property 1 to be 5 but got 3 (expected array [6, 5] got [6, 3])

  • OK /html/semantics/embedded-content/media-elements/media_fragment_seek.html (#24114)
    • FAIL [expected PASS] subtest: Video should seek to time specified in media fragment syntax

      assert_equals: expected 3 but got 0

  • TIMEOUT /html/semantics/embedded-content/media-elements/preserves-pitch.html (#40352)
    • PASS [expected TIMEOUT] subtest: Speed-ups should not change the pitch when preservesPitch=true
    • PASS [expected NOTRUN] subtest: Slow-downs should not change the pitch when preservesPitch=true
    • TIMEOUT [expected NOTRUN] subtest: Speed-ups should change the pitch when preservesPitch=false

      Test timed out

  • OK [expected TIMEOUT] /html/semantics/embedded-content/media-elements/src_object_blob.html (#40340)
    • PASS [expected TIMEOUT] subtest: HTMLMediaElement.srcObject blob
  • OK /html/semantics/forms/form-submission-0/multipart-formdata.window.html (#28725)
    • FAIL [expected PASS] subtest: multipart/form-data: Basic test (formdata event)

      assert_equals: expected "\r\nContent-Disposition: form-data; name=\"basic\"\r\n\r\ntest\r\n--\r\n" but got ""

  • OK /html/semantics/forms/form-submission-0/text-plain.window.html (#28687)
    • FAIL [expected PASS] subtest: text/plain: Basic File test (normal form)

      assert_equals: expected "basic=file-test.txt\r\n" but got ""

    • PASS [expected FAIL] subtest: text/plain: 0x00 in value (normal form)
    • PASS [expected FAIL] subtest: text/plain: 0x00 in filename (formdata event)
    • PASS [expected FAIL] subtest: text/plain: single quote in value (normal form)
  • OK [expected ERROR] /html/user-activation/no-activation-thru-escape-key.html (#40343)
  • CRASH [expected OK] /html/webappapis/scripting/reporterror.any.worker.html
  • CRASH [expected OK] /intersection-observer/v2/animated-occlusion.html
  • FAIL [expected PASS] /png/apng/fcTL-dispose-in-region-previous.html
  • OK /preload/prefetch-document.html (#37210)
    • FAIL [expected PASS] subtest: different-site document prefetch with 'as=document' should not be consumed

      assert_equals: expected 2 but got 1

  • OK /preload/preload-xhr.html (#39092)
    • FAIL [expected PASS] subtest: Make an XHR request immediately after creating link rel=preload.

      assert_equals: resources/dummy.xml?token=30f60991-ad63-4471-bb65-526af41348e4 expected 1 but got 0

  • OK /resource-timing/buffer-full-add-then-clear.html (#40819)
    • PASS [expected FAIL] subtest: Test that if the buffer is cleared after entries were added to the secondary buffer, those entries make it into the primary one
  • ERROR [expected OK] /resource-timing/cors-preflight.any.html (#28694)
  • CRASH [expected ERROR] /trusted-types/SharedWorker-importScripts.html
  • OK [expected TIMEOUT] /trusted-types/trusted-types-navigation.html?06-10 (#37920)
    • PASS [expected TIMEOUT] subtest: Navigate a frame via anchor with javascript:-urls w/ default policy in report-only mode.
    • FAIL [expected NOTRUN] subtest: Navigate a window via anchor with javascript:-urls w/ a default policy throwing an exception in enforcing mode.

      promise_test: Unhandled rejection with value: "Unexpected message received: \"No securitypolicyviolation reported!\""

    • FAIL [expected NOTRUN] subtest: Navigate a window via anchor with javascript:-urls w/ a default policy throwing an exception in report-only mode.

      promise_test: Unhandled rejection with value: "Unexpected message received: \"No securitypolicyviolation reported!\""

  • OK [expected TIMEOUT] /trusted-types/trusted-types-navigation.html?26-30 (#38807)
    • PASS [expected TIMEOUT] subtest: Navigate a window via form-submission with javascript:-urls in report-only mode.
    • PASS [expected NOTRUN] subtest: Navigate a window via form-submission with javascript:-urls w/ default policy in report-only mode.
    • PASS [expected NOTRUN] subtest: Navigate a frame via form-submission with javascript:-urls in enforcing mode.
    • PASS [expected NOTRUN] subtest: Navigate a frame via form-submission with javascript:-urls w/ default policy in enforcing mode.
  • TIMEOUT /trusted-types/trusted-types-navigation.html?31-35 (#38034)
    • TIMEOUT [expected PASS] subtest: Navigate a frame via form-submission with javascript:-urls in report-only mode.

      Test timed out

    • NOTRUN [expected TIMEOUT] subtest: Navigate a frame via form-submission with javascript:-urls w/ default policy in report-only mode.
  • CRASH [expected OK] /trusted-types/trusted-types-reporting-for-Document-execCommand.html
  • CRASH [expected OK] /webaudio/the-audio-api/the-audiobuffersourcenode-interface/ctor-audiobuffersource.html
  • OK /webdriver/tests/classic/dismiss_alert/dismiss.py (#39098)
    • FAIL [expected PASS] subtest: test_dismiss_in_popup_window

      AssertionError: no such alert (404): No user prompt is currently active.

  • TIMEOUT [expected OK] /webstorage/localstorage-about-blank-3P-iframe-opens-3P-window.partitioned.html (#29053)
    • TIMEOUT [expected PASS] subtest: StorageKey: test 3P about:blank window opened from a 3P iframe

      Test timed out

Stable unexpected results that are known to be intermittent (16)
  • OK /IndexedDB/idbobjectstore_getAll.any.html (#39276)
    • PASS [expected FAIL] subtest: Get all values with transaction.commit()
  • OK /IndexedDB/idbobjectstore_getAll.any.worker.html (#39400)
    • PASS [expected FAIL] subtest: Get all values with transaction.commit()
  • FAIL [expected PASS] /_mozilla/mozilla/sslfail.html (#10760)
  • TIMEOUT [expected OK] /_mozilla/mozilla/window_resize_event.html (#36741)
    • TIMEOUT [expected PASS] subtest: Popup onresize event fires after resizeTo

      Test timed out

  • OK /css/css-fonts/generic-family-keywords-001.html (#37467)
    • PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(kai)
  • OK /css/css-fonts/generic-family-keywords-003.html (#38994)
    • PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(fangsong) (drawing text in a canvas)
    • PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted ui-monospace (drawing text in a canvas)
  • OK /fetch/metadata/generated/css-font-face.https.sub.tentative.html (#32732)
    • PASS [expected FAIL] subtest: sec-fetch-mode
    • FAIL [expected PASS] subtest: sec-fetch-storage-access - Cross-site

      promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."

  • OK /fetch/metadata/generated/css-font-face.sub.tentative.html (#34624)
    • FAIL [expected PASS] subtest: sec-fetch-storage-access - Not sent to non-trustworthy same-origin destination

      promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."

    • FAIL [expected PASS] subtest: sec-fetch-storage-access - Not sent to non-trustworthy same-site destination

      promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."

  • OK /fetch/metadata/generated/element-img-environment-change.https.sub.html (#30111)
    • PASS [expected FAIL] subtest: sec-fetch-site - Same origin, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Same-Origin -&gt; Cross-Site -&gt; Same-Origin redirect, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Cross-Site -&gt; Same Origin, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Cross-Site -&gt; Cross-Site, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Same-Origin -&gt; Same-Site, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Same-Origin -&gt; Cross-Site, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Same-Site -&gt; Same-Site, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Same-Site -&gt; Cross-Site, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-mode - no attributes
    • PASS [expected FAIL] subtest: sec-fetch-mode - attributes: crossorigin
    • And 4 more unexpected results...
  • OK /fetch/metadata/generated/element-img-environment-change.sub.html (#30111)
    • PASS [expected FAIL] subtest: sec-fetch-site - Not sent to non-trustworthy same-origin destination, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Not sent to non-trustworthy same-site destination, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-site - Not sent to non-trustworthy cross-site destination, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-mode - Not sent to non-trustworthy same-site destination, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-mode - Not sent to non-trustworthy cross-site destination, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-dest - Not sent to non-trustworthy same-site destination, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-dest - Not sent to non-trustworthy cross-site destination, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-user - Not sent to non-trustworthy same-site destination, no attributes
    • PASS [expected FAIL] subtest: sec-fetch-storage-access - Not sent to non-trustworthy same-site destination, no attributes
  • OK /html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-window-open.html (#28691)
    • FAIL [expected PASS] subtest: load event does not fire on window.open('about:blank')

      assert_unreached: load should not be fired Reached unreachable code

  • OK /html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin-fragment.html (#20768)
    • PASS [expected FAIL] subtest: Tests that a fragment navigation in the unload handler will not block the initial navigation
  • TIMEOUT [expected OK] /html/interaction/focus/the-autofocus-attribute/supported-elements.html (#24145)
    • PASS [expected NOTRUN] subtest: Non-HTMLElement should not support autofocus
    • TIMEOUT [expected FAIL] subtest: Host element with delegatesFocus including no focusable descendants should be skipped

      Test timed out

    • NOTRUN [expected FAIL] subtest: Area element should support autofocus
  • TIMEOUT [expected OK] /html/interaction/focus/the-autofocus-attribute/update-the-rendering.html (#24145)
    • TIMEOUT [expected FAIL] subtest: "Flush autofocus candidates" should be happen before a scroll event and animation frame callbacks

      Test timed out

  • OK /html/webappapis/user-prompts/print-during-unload.html (#35944)
    • FAIL [expected PASS] subtest: print() during unload

      assert_array_equals: expected property 1 to be "destination" but got "error: window.print is not a function" (expected array ["start", "destination"] got ["start", "error: window.print is not a function"])

  • OK /preload/preload-error.sub.html (#37177)
    • PASS [expected FAIL] subtest: 404 (fetch): main

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github-actions bot commented Dec 6, 2025

✨ Try run (#19994237204) succeeded.

@jdm jdm added this pull request to the merge queue Dec 6, 2025
@servo-highfive servo-highfive added the S-awaiting-merge The PR is in the process of compiling and running tests on the automated CI. label Dec 6, 2025
Merged via the queue into servo:main with commit c6257f9 Dec 6, 2025
74 checks passed
@servo-highfive servo-highfive removed the S-awaiting-merge The PR is in the process of compiling and running tests on the automated CI. label Dec 6, 2025
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@Taym95 @servo-wpt-sync @mrobinson @jdm @servo-highfive