servoshell: Unset `webdriver_port` when scheduling shutdown #40974

yezhizhen · 2025-12-01T03:31:22Z

This is the minimal possible changes after I've tried several approaches. The original problem is tricky after multi-window support, as we want to shutdown normally while not panic after no window is open to support Servodriver.

Testing:

We no longer panic on

servo/tests/wpt/tests/webdriver/tests/classic/close_window/close.py

Line 87 in f0ed750

def test_element_usage_after_closing_browsing_context(session, inline):
Wpt can end normally instead of always "Max retry exceeded to normally shut down. Killing instead."

Fixes: #40972 (comment)

Signed-off-by: Euclid Ye <yezhizhenjiakang@gmail.com>

yezhizhen · 2025-12-01T03:34:59Z

ports/servoshell/running_app_state.rs

    /// Whether or not program exit has been triggered. This means that all windows
    /// will be destroyed and shutdown will start at the end of the current event loop.
-    exit_scheduled: Rc<Cell<bool>>,
+    exit_scheduled: Cell<bool>,


This Rc was likely wrongly added when copy-pasting the

servo/ports/servoshell/running_app_state.rs

Line 163 in f0ed750

pub(crate) achieved_stable_image: Rc<Cell<bool>>,

above.

github-actions · 2025-12-01T05:20:56Z

🔨 Triggering try run (#19812186282) for Linux (WPT)

github-actions · 2025-12-01T05:51:41Z

Test results for linux-wpt from try job (#19812186282):

Flaky unexpected result (40)

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

OK /_mozilla/mozilla/getBoundingClientRect.html (#39668)
- FAIL [expected PASS] subtest: getBoundingClientRect 1
```
assert_equals: expected 62 but got 60.35
```
ERROR [expected TIMEOUT] /_mozilla/webxr/sessionavailable.https.html
TIMEOUT [expected ERROR] /_webgl/conformance/extensions/oes-texture-float-with-canvas.html
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
```
FAIL [expected PASS] /css/css-backgrounds/background-size-041.html
FAIL [expected PASS] /css/css-backgrounds/border-image-repeat-space-9.html
OK /css/css-cascade/layer-cssom-order-reverse.html (#36094)
- PASS [expected FAIL] subtest: Delete layer invalidates @font-face
OK /custom-elements/form-associated/ElementInternals-setFormValue.html (#29174)
- PASS [expected FAIL] subtest: Single value - empty name exists
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."
```
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 [expected ERROR] /focus/focus-event-after-switching-iframes.sub.html (#40368)
TIMEOUT [expected CRASH] /html/anonymous-iframe/indexeddb.tentative.https.window.html (#39254)
ERROR [expected TIMEOUT] /html/browsers/browsing-the-web/history-traversal/pageswap/pageswap-initial-navigation.html (#40387)
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 [expected TIMEOUT] /html/interaction/focus/the-autofocus-attribute/autofocus-dialog.html (#29087)
- FAIL [expected TIMEOUT] subtest: <dialog>-contained autofocus element gets focused when the dialog is shown
```
assert_equals: expected "DIV" but got "BODY"
```
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/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 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: Basic File test (formdata event)
- PASS [expected FAIL] subtest: text/plain: \r\n in name (formdata event)
- PASS [expected FAIL] subtest: text/plain: non-ASCII in name and value (normal form)
OK [expected CRASH] /html/semantics/forms/the-fieldset-element/disabled-003.html (#31730, #39631)
OK [expected ERROR] /html/user-activation/no-activation-thru-escape-key.html (#40343)

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 /navigation-timing/test-navigation-type-reload.html (#33334)
- PASS [expected FAIL] subtest: Reload domComplete > Original domComplete
- PASS [expected FAIL] subtest: Reload domContentLoadedEventStart > Original domContentLoadedEventStart
- PASS [expected FAIL] subtest: Reload domInteractive > Original domInteractive
- PASS [expected FAIL] subtest: Reload fetchStart > Original fetchStart
- PASS [expected FAIL] subtest: Reload loadEventEnd > Original loadEventEnd
- PASS [expected FAIL] subtest: Reload loadEventStart > Original loadEventStart
CRASH [expected ERROR] /pointerevents/pointerevent_touch-action-pan-up-css_touch.html
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=d51cfd49-5958-4317-96a5-9c4ad9f6c328 expected 1 but got 0
```
OK /resource-timing/buffer-full-add-then-clear.html (#40819)
- FAIL [expected PASS] subtest: Test that if the buffer is cleared after entries were added to the secondary buffer, those entries make it into the primary one
```
assert_equals: Number of entries does not match the expected value. expected 3 but got 0
```
CRASH [expected OK] /resource-timing/sizes-redirect-img.html
CRASH [expected OK] /trusted-types/Element-setAttribute-setAttributeNS-sinks.tentative.html
CRASH [expected OK] /trusted-types/TrustedTypePolicy-CSP-no-name.html
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] /wasm/webapi/esm-integration/worklet-import-source-phase.tentative.https.html
CRASH [expected OK] /webaudio/the-audio-api/the-audioparam-interface/audioparam-default-value.window.html
OK /webdriver/tests/classic/delete_cookie/delete.py
- FAIL [expected PASS] subtest: test_null_response_value
```
AssertionError: no such window (404): No such window
```
OK /webdriver/tests/classic/delete_cookie/user_prompts.py
- FAIL [expected PASS] subtest: test_accept[alert-None]
```
webdriver.error.NoSuchWindowException: no such window (404): No such window
```
OK /webdriver/tests/classic/element_clear/scroll_into_view.py
- FAIL [expected PASS] subtest: test_scroll_into_view
```
webdriver.error.NoSuchWindowException: no such window (404): No such window
```
OK /webdriver/tests/classic/is_element_enabled/enabled.py
- ERROR [expected PASS] subtest: test_no_top_browsing_context
```
setup error: webdriver.error.NoSuchElementException: no such element (404)
```
OK [expected ERROR] /webxr/render_state_update.https.html (#27535)
OK /webxr/xrSession_features_deviceSupport.https.html (#24357)
- FAIL [expected PASS] subtest: Immersive XRSession requests with no supported device should reject
```
assert_unreached: Should have rejected: undefined Reached unreachable code
```

Stable unexpected results that are known to be intermittent (25)

OK /IndexedDB/idbobjectstore_getAll.any.html (#39276)
- 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
```
CRASH [expected PASS] /_mozilla/shadow-dom/move-element-with-ua-shadow-tree-crash.html (#39473)
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 /css/css-fonts/generic-family-keywords-001.html (#37467)
- 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
```
- PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(nastaliq)
OK /css/css-fonts/generic-family-keywords-003.html (#38994)
- PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted ui-rounded (drawing text in a canvas)
FAIL [expected PASS] /css/css-grid/grid-lanes/tentative/alignment/row-grid-lanes-align-self-003.html (#40833)
FAIL [expected PASS] /css/css-grid/grid-lanes/tentative/grid-placement/row-explicit-placement-004.html (#40834)
FAIL [expected PASS] /css/css-grid/masonry/tentative/subgrid/column/masonry-subgrid-002f.html (#40830)
TIMEOUT [expected OK] /fetch/api/redirect/redirect-keepalive.https.any.html (#32153)
- TIMEOUT [expected PASS] subtest: [keepalive][iframe][load] mixed content redirect; setting up
```
Test timed out
```
OK /fetch/fetch-later/permissions-policy/deferred-fetch-allowed-by-permissions-policy.https.window.html (#40478)
- PASS [expected FAIL] subtest: Permissions policy header: "deferred-fetch=*" allows fetchLater() in the top-level document.
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 -> Cross-Site -> Same-Origin redirect, no attributes
- FAIL [expected PASS] subtest: sec-fetch-site - Same-Origin -> Same-Site -> Same-Origin redirect, no attributes
```
promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."
```
- PASS [expected FAIL] subtest: sec-fetch-site - Cross-Site -> Same Origin, no attributes
- FAIL [expected PASS] subtest: sec-fetch-site - Cross-Site -> Same-Site, no attributes
```
promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."
```
- PASS [expected FAIL] subtest: sec-fetch-site - Cross-Site -> Cross-Site, no attributes
- PASS [expected FAIL] subtest: sec-fetch-site - Same-Origin -> Same-Site, no attributes
- FAIL [expected PASS] subtest: sec-fetch-site - Same-Origin -> Cross-Site, no attributes
```
promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."
```
- PASS [expected FAIL] subtest: sec-fetch-site - Same-Site -> Same Origin, no attributes
- FAIL [expected PASS] subtest: sec-fetch-site - Same-Site -> Same-Site, no attributes
```
promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."
```
- PASS [expected FAIL] subtest: sec-fetch-site - Same-Site -> Cross-Site, no attributes
- And 2 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-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 cross-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 cross-site destination, no attributes
OK [expected CRASH] /fetch/metadata/window-open.https.sub.html (#40339)
- PASS [expected TIMEOUT] subtest: Same-origin window, user-activated
- PASS [expected TIMEOUT] subtest: Same-site window, user-activated
- PASS [expected TIMEOUT] subtest: Cross-site window, user-activated
- FAIL [expected PASS] subtest: Same-site window, user-activated: sec-fetch-site
```
assert_equals: expected "same-site" but got "same-origin"
```
- FAIL [expected PASS] subtest: Cross-site window, user-activated: sec-fetch-site
```
assert_equals: expected "cross-site" but got "same-origin"
```
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 /html/interaction/focus/the-autofocus-attribute/supported-elements.html (#24145)
- FAIL [expected TIMEOUT] subtest: Element with tabindex should support autofocus
```
assert_equals: expected "SPAN" but got "BODY"
```
- TIMEOUT [expected NOTRUN] subtest: Non-HTMLElement should not support autofocus
```
Test timed out
```
OK /html/semantics/embedded-content/media-elements/preserves-pitch.html (#40352)
- FAIL [expected PASS] subtest: Speed-ups should not change the pitch when preservesPitch=true
```
assert_approx_equals: The actual pitch should be close to the expected pitch. expected 440 +/- 66 but got 0
```
- FAIL [expected PASS] subtest: Slow-downs should not change the pitch when preservesPitch=true
```
assert_approx_equals: The actual pitch should be close to the expected pitch. expected 440 +/- 66 but got 0
```
TIMEOUT [expected ERROR] /html/semantics/links/links-created-by-a-and-area-elements/target_blank_implicit_noopener_base.html (#40347)
CRASH [expected OK] /pointerevents/compat/pointerevent_touch-action_two-finger_interaction.html (#40418)

OK /preload/preload-error.sub.html (#37177)

FAIL [expected PASS] subtest: 404 (fetch): main

assert_greater_than: http://web-platform.test:8000/preload/resources/dummy.xml?pipe=status%28404%29&amp;label=fetch should be loaded expected a number greater than 0 but got 0

PASS [expected FAIL] subtest: CORS (fetch): main

OK [expected ERROR] /resource-timing/cors-preflight.any.html (#28694)
TIMEOUT [expected OK] /trusted-types/trusted-types-navigation.html?01-05 (#38975)
- TIMEOUT [expected PASS] subtest: Navigate a window via anchor with javascript:-urls in report-only mode.
```
Test timed out
```
- NOTRUN [expected PASS] subtest: Navigate a window via anchor with javascript:-urls w/ default policy in report-only mode.
- NOTRUN [expected PASS] subtest: Navigate a frame via anchor with javascript:-urls in enforcing mode.
TIMEOUT [expected OK] /trusted-types/trusted-types-navigation.html?26-30 (#38807)
- TIMEOUT [expected FAIL] subtest: Navigate a window via form-submission with javascript:-urls in report-only mode.
```
Test timed out
```
- NOTRUN [expected PASS] subtest: Navigate a window via form-submission with javascript:-urls w/ default policy in report-only mode.
- NOTRUN [expected FAIL] subtest: Navigate a frame via form-submission with javascript:-urls in enforcing mode.
- NOTRUN [expected PASS] subtest: Navigate a frame via form-submission with javascript:-urls w/ default policy in enforcing mode.

github-actions · 2025-12-01T05:51:49Z

✨ Try run (#19812186282) succeeded.

mrobinson

Thanks for the fix!

Fix things

c3ab2f3

Signed-off-by: Euclid Ye <yezhizhenjiakang@gmail.com>

yezhizhen requested review from jschwe, mrobinson and xiaochengh December 1, 2025 03:31

servo-highfive added the S-awaiting-review There is new code that needs to be reviewed. label Dec 1, 2025

yezhizhen commented Dec 1, 2025

View reviewed changes

yezhizhen added the T-linux-wpt Do a try run of the WPT label Dec 1, 2025

github-actions bot removed the T-linux-wpt Do a try run of the WPT label Dec 1, 2025

mrobinson approved these changes Dec 1, 2025

View reviewed changes

servo-highfive removed the S-awaiting-review There is new code that needs to be reviewed. label Dec 1, 2025

yezhizhen added this pull request to the merge queue Dec 1, 2025

servo-highfive added the S-awaiting-merge The PR is in the process of compiling and running tests on the automated CI. label Dec 1, 2025

Merged via the queue into servo:main with commit b4b3993 Dec 1, 2025
69 checks passed

yezhizhen deleted the pls-shutdown branch December 1, 2025 08:43

servo-highfive removed the S-awaiting-merge The PR is in the process of compiling and running tests on the automated CI. label Dec 1, 2025

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Uh oh!

Uh oh!

servoshell: Unset `webdriver_port` when scheduling shutdown #40974

servoshell: Unset `webdriver_port` when scheduling shutdown #40974

Uh oh!

yezhizhen commented Dec 1, 2025 •

edited

Loading

Uh oh!

yezhizhen Dec 1, 2025 •

edited

Loading

Uh oh!

github-actions bot commented Dec 1, 2025

Uh oh!

github-actions bot commented Dec 1, 2025

Uh oh!

github-actions bot commented Dec 1, 2025

Uh oh!

mrobinson left a comment

Uh oh!

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

3 participants

Uh oh!

servoshell: Unset webdriver_port when scheduling shutdown #40974

servoshell: Unset webdriver_port when scheduling shutdown #40974

Uh oh!

Conversation

yezhizhen commented Dec 1, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

yezhizhen Dec 1, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Choose a reason for hiding this comment

Uh oh!

github-actions bot commented Dec 1, 2025

Uh oh!

github-actions bot commented Dec 1, 2025

Uh oh!

github-actions bot commented Dec 1, 2025

Uh oh!

mrobinson left a comment

Choose a reason for hiding this comment

Uh oh!

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

3 participants

servoshell: Unset `webdriver_port` when scheduling shutdown #40974

servoshell: Unset `webdriver_port` when scheduling shutdown #40974

yezhizhen commented Dec 1, 2025 •

edited

Loading

yezhizhen Dec 1, 2025 •

edited

Loading