1710396 - Intermittent TEST-UNEXPECTED-TIMEOUT | /css/cssom-view/add-background-attachment-fixed-during-smooth-scroll.html | expected FAIL

Status: RESOLVED INCOMPLETE

(Core :: Layout, defect, P5)

Description

[Treeherder Bug Filer]

Filed by: abutkovits [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=339226299&repo=autoland
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/Mq8HbbrGSS2jHPLtjIf0MA/runs/0/artifacts/public/logs/live_backing.log
Reftest URL: https://hg.mozilla.org/mozilla-central/raw-file/tip/layout/tools/reftest/reftest-analyzer.xhtml#logurl=https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/Mq8HbbrGSS2jHPLtjIf0MA/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

---

[task 2021-05-10T01:23:50.664Z] 01:23:50     INFO - TEST-START | /css/cssom-view/add-background-attachment-fixed-during-smooth-scroll.html
[task 2021-05-10T01:23:50.767Z] 01:23:50     INFO - Setting pref dom.animations-api.compositing.enabled (true)
[task 2021-05-10T01:23:50.811Z] 01:23:50     INFO - Setting pref gfx.font_rendering.fallback.async (false)
[task 2021-05-10T01:23:50.988Z] 01:23:50     INFO - PID 5776 | [Parent 8172, Main Thread] WARNING: NS_ENSURE_TRUE(uri) failed: file /builds/worker/checkouts/gecko/caps/BasePrincipal.cpp:1327
[task 2021-05-10T01:23:50.993Z] 01:23:50     INFO - PID 5776 | [Parent 8172, Main Thread] WARNING: NS_ENSURE_TRUE(rootFrame) failed: file /builds/worker/checkouts/gecko/dom/base/nsGlobalWindowOuter.cpp:4240
[task 2021-05-10T01:23:51.068Z] 01:23:51     INFO - PID 5776 | [2021-05-10T01:23:51Z WARN  webrender::device::gl] Missing optimized shader source for gpu_cache_update
[task 2021-05-10T01:23:51.120Z] 01:23:51     INFO - PID 5776 | [2021-05-10T01:23:51Z WARN  webrender::device::gl] Cropping texture upload Rect(0x1 at (0, 0)) to None
[task 2021-05-10T01:23:51.122Z] 01:23:51     INFO - PID 5776 | [2021-05-10T01:23:51Z WARN  webrender::device::gl] Cropping texture upload Rect(0x1 at (0, 0)) to None
[task 2021-05-10T01:23:51.123Z] 01:23:51     INFO - PID 5776 | [2021-05-10T01:23:51Z WARN  webrender::device::gl] Cropping texture upload Rect(0x1 at (0, 0)) to None
[task 2021-05-10T01:23:51.147Z] 01:23:51     INFO - PID 5776 | 1620609831145	Marionette	INFO	Testing http://web-platform.test:8000/css/cssom-view/add-background-attachment-fixed-during-smooth-scroll.html == http://web-platform.test:8000/css/cssom-view/add-background-attachment-fixed-during-smooth-scroll-ref.html
[task 2021-05-10T01:23:51.195Z] 01:23:51     INFO - PID 5776 | [2021-05-10T01:23:51Z WARN  webrender::device::gl] Cropping texture upload Rect(0x1 at (0, 0)) to None
[task 2021-05-10T01:23:51.196Z] 01:23:51     INFO - PID 5776 | [2021-05-10T01:23:51Z WARN  webrender::device::gl] Cropping texture upload Rect(0x1 at (0, 0)) to None
[task 2021-05-10T01:23:51.197Z] 01:23:51     INFO - PID 5776 | [2021-05-10T01:23:51Z WARN  webrender::device::gl] Cropping texture upload Rect(0x1 at (0, 0)) to None
[task 2021-05-10T01:23:51.219Z] 01:23:51     INFO - PID 5776 | [2021-05-10T01:23:51Z WARN  webrender::device::gl] Cropping texture upload Rect(0x1 at (0, 0)) to None
[task 2021-05-10T01:23:51.221Z] 01:23:51     INFO - PID 5776 | [2021-05-10T01:23:51Z WARN  webrender::device::gl] Cropping texture upload Rect(0x1 at (0, 0)) to None
[task 2021-05-10T01:23:51.222Z] 01:23:51     INFO - PID 5776 | [2021-05-10T01:23:51Z WARN  webrender::device::gl] Cropping texture upload Rect(0x1 at (0, 0)) to None
[task 2021-05-10T01:23:59.880Z] 01:23:59     INFO - PID 5776 | [Child 9640, Main Thread] WARNING: early callback, or time went backwards: '!aAllowIdleDispatch', file /builds/worker/checkouts/gecko/xpcom/threads/IdleTaskRunner.cpp:179
[task 2021-05-10T01:24:31.030Z] 01:24:31     INFO - PID 5776 | [GPU 5772, Compositor] WARNING: Possibly dropping task posted to updater thread: file /builds/worker/checkouts/gecko/gfx/layers/apz/src/APZUpdater.cpp:370
[task 2021-05-10T01:24:31.031Z] 01:24:31     INFO - PID 5776 | [GPU 5772, Compositor] WARNING: Possibly dropping task posted to updater thread: file /builds/worker/checkouts/gecko/gfx/layers/apz/src/APZUpdater.cpp:370
[task 2021-05-10T01:24:31.076Z] 01:24:31  WARNING - Failed to get assertion count; window was closed
[task 2021-05-10T01:24:31.091Z] 01:24:31  WARNING - Failed to get assertion count; window was closed
[task 2021-05-10T01:24:31.094Z] 01:24:31     INFO - TEST-UNEXPECTED-TIMEOUT | /css/cssom-view/add-background-attachment-fixed-during-smooth-scroll.html | expected FAIL
[task 2021-05-10T01:24:31.094Z] 01:24:31     INFO - TEST-INFO expected FAIL | took 40430ms```

Comment 1

[Emilio Cobos Álvarez [:emilio]]

Are you sure of that regression range? The test doesn't have much to do with APZ, and there's no transform in the test that would cause a behavior change with my patch, afaics

Comment 2

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

It's an assumption based on

• all failures being on WebRender platforms and the test modifying gfx/layers/wr/WebRenderScrollDataWrapper.h
• the test being about scrolling and the test modifying gfx/layers/wr/WebRenderScrollDataWrapper.h
• the test smooth scrolling with requestAnimationFrame and transform

Comment 3

[Emilio Cobos Álvarez [:emilio]]

Where's the transform? There's no transform on this test-case, it only uses will-change: transform

Comment 4

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

Matt: Based on backfills & retriggers, could this be from bug 1708325?

Comment 5

[Emilio Cobos Álvarez [:emilio]]

Yeah, that seems a bit more plausible at least.

Comment 6

[Intermittent Failures Robot]

20 failures in 540 pushes (0.037 failures/push) were associated with this bug yesterday.

Repository breakdown:

• mozilla-central: 8
• autoland: 11
• try: 1

Platform and build breakdown:

• linux1804-64-qr: 5
  • debug: 5
• windows10-64-qr: 14
  • debug: 14
• windows10-64-shippable-qr: 1
  • opt: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1710396&startday=2021-05-11&endday=2021-05-11&tree=all

Comment 7

[Andreea Pavel [:apavel]]

There are 66 total failures in the last 7 days on

• linux1804-64-qr debug
• windows10-64-ccov-qr opt
• windows10-64-qr debug and opt
• windows10-64-shippable-qr opt
  Recent failure log: https://treeherder.mozilla.org/logviewer?job_id=339760209&repo=mozilla-central&lineNumber=13907

[task 2021-05-15T00:16:47.489Z] 00:16:47 INFO - TEST-START | /css/selectors/old-tests/css3-modsel-155c.xml
[task 2021-05-15T00:16:47.496Z] 00:16:47 INFO - PID 7704 | 1621037807494 Marionette INFO Testing http://web-platform.test:8000/css/selectors/old-tests/css3-modsel-155c.xml == http://web-platform.test:8000/css/selectors/old-tests/reference/this-line-lime-background.xht
[task 2021-05-15T00:16:47.598Z] 00:16:47 INFO - TEST-UNEXPECTED-TIMEOUT | /css/cssom-view/add-background-attachment-fixed-during-smooth-scroll.html | expected FAIL
[task 2021-05-15T00:16:47.601Z] 00:16:47 INFO - TEST-INFO expected FAIL | took 20221ms
[task 2021-05-15T00:16:47.636Z] 00:16:47 INFO - PID 7276 | 1621037807634 Marionette INFO Stopped listening on port 57652
[task 2021-05-15T00:16:47.712Z] 00:16:47 INFO - PID 7704 | 1621037807680 Marionette INFO No differences allowed
[task 2021-05-15T00:16:47.779Z] 00:16:47 INFO - TEST-PASS | /css/selectors/old-tests/css3-modsel-155c.xml | took 254ms

Comment 8

[Andreea Pavel [:apavel]]

Attachment: Bug 1710396 - update add-background-attachment-fixed-during-smooth-scroll.html expectation for win and linux-qr r=ahal

Comment 9

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/fca35964a229
update add-background-attachment-fixed-during-smooth-scroll.html expectation for win and linux-qr r=intermittent-reviewers,ahal

Comment 10

[Iulian Moraru]

https://hg.mozilla.org/mozilla-central/rev/fca35964a229

Comment 11

[Intermittent Failures Robot]

17 failures in 3061 pushes (0.006 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 11
• mozilla-central: 6

Platform and build breakdown:

• windows10-64-qr: 3
  • opt: 3
• windows10-64-shippable-qr: 1
  • opt: 1
• linux1804-64-qr: 9
  • debug: 9
• windows10-64-ccov-qr: 4
  • opt: 4

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1710396&startday=2021-05-17&endday=2021-05-23&tree=all

Comment 12

[BugBot [:suhaib / :marco/ :calixte]]

https://wiki.mozilla.org/Bug_Triage#Intermittent_Test_Failure_Cleanup
For more information, please visit BugBot documentation.

Comment 13

[Intermittent Failures Robot]

Summary

1 failures in 4826 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• linux1804-64-ccov-qr: 1
  • opt: 1

Table

	no_variant
linux1804-64-ccov-qr--/opt	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1710396&startday=2025-03-10&endday=2025-03-16&tree=all

Comment 14

[Intermittent Failures Robot]

1 failures were associated with this bug in the last 7 days.

Repository breakdown:

• try: 1

Table

	nofis
android-x86/opt	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1710396&startday=2025-08-25&endday=2025-08-31&tree=all

Comment 15

[Intermittent Failures Robot]

1 failures were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Table

	nofis
android-x86/opt	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1710396&startday=2025-10-13&endday=2025-10-19&tree=all

Comment 16

[Intermittent Failures Robot]

1 failures were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-beta: 1

Table

	nofis
android-x86/opt	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1710396&startday=2025-10-20&endday=2025-10-26&tree=all