Closed Bug 1764585 Opened 3 years ago Closed 3 years ago

Permanent macOS 11 about:blank != about:blank | image comparison, max difference: 0, number of differing pixels: 0

Categories

(Core :: Layout, defect)

Product:
Core
Component:
Layout
Type:
defect

Tracking

()

Status:
RESOLVED FIXED
Milestone:
103 Branch
Tracking Flags:
Tracking Status
firefox-esr102 --- fixed
firefox102 --- wontfix
firefox103 --- fixed

People

(Reporter: intermittent-bug-filer, Assigned: emilio)

References

Details

(Keywords: intermittent-failure)

Attachments

(1 file)

Bug 1764585 - Wait for some pref changes to take effect. r=tnikkel
48 bytes, text/x-phabricator-request
Details | Review

Filed by: ccozmuta [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=374373271&repo=autoland
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/d2GYN3oJQ6K9WSs1_VIbGg/runs/1/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/d2GYN3oJQ6K9WSs1_VIbGg/runs/1/artifacts/public/logs/live_backing.log&only_show_unexpected=1

task 2022-04-13T15:38:42.077Z] 15:38:42     INFO - REFTEST TEST-START | about:blank != about:blank
[task 2022-04-13T15:38:42.078Z] 15:38:42     INFO - REFTEST INFO | RESTORE PREFERENCE pref(widget.non-native-theme.always-high-contrast,false)
[task 2022-04-13T15:38:42.079Z] 15:38:42     INFO - REFTEST INFO | RESTORE PREFERENCE pref(ui.use_standins_for_native_colors,false)
[task 2022-04-13T15:38:42.080Z] 15:38:42     INFO - REFTEST INFO | SET PREFERENCE pref(browser.display.document_color_use,2)
[task 2022-04-13T15:38:42.081Z] 15:38:42     INFO - REFTEST INFO | SET PREFERENCE pref(ui.use_standins_for_native_colors,true)
[task 2022-04-13T15:38:42.081Z] 15:38:42     INFO - REFTEST INFO | SET PREFERENCE pref(widget.non-native-theme.always-high-contrast,true)
[task 2022-04-13T15:38:42.082Z] 15:38:42     INFO - REFTEST INFO | SET PREFERENCE pref(browser.display.use_system_colors,true)
[task 2022-04-13T15:38:42.083Z] 15:38:42     INFO - REFTEST INFO | SET PREFERENCE pref(browser.display.document_color_use,0)
[task 2022-04-13T15:38:42.084Z] 15:38:42     INFO - REFTEST INFO | SET PREFERENCE pref(layout.css.prefers-color-scheme.content-override,0)
[task 2022-04-13T15:38:42.084Z] 15:38:42     INFO - REFTEST TEST-LOAD | about:blank | 42 / 47 (89%)
[task 2022-04-13T15:38:42.133Z] 15:38:42     INFO - REFTEST INFO | RESTORE PREFERENCE pref(layout.css.prefers-color-scheme.content-override,1)
[task 2022-04-13T15:38:42.135Z] 15:38:42     INFO - REFTEST INFO | RESTORE PREFERENCE pref(browser.display.document_color_use,2)
[task 2022-04-13T15:38:42.136Z] 15:38:42     INFO - REFTEST INFO | RESTORE PREFERENCE pref(browser.display.use_system_colors,false)
[task 2022-04-13T15:38:42.136Z] 15:38:42     INFO - REFTEST INFO | RESTORE PREFERENCE pref(widget.non-native-theme.always-high-contrast,false)
[task 2022-04-13T15:38:42.137Z] 15:38:42     INFO - REFTEST INFO | RESTORE PREFERENCE pref(ui.use_standins_for_native_colors,false)
[task 2022-04-13T15:38:42.139Z] 15:38:42     INFO - REFTEST INFO | RESTORE PREFERENCE pref(browser.display.document_color_use,1)
[task 2022-04-13T15:38:42.140Z] 15:38:42     INFO - REFTEST INFO | SET PREFERENCE pref(ui.use_standins_for_native_colors,true)
[task 2022-04-13T15:38:42.140Z] 15:38:42     INFO - REFTEST INFO | SET PREFERENCE pref(widget.non-native-theme.always-high-contrast,true)
[task 2022-04-13T15:38:42.141Z] 15:38:42     INFO - REFTEST INFO | SET PREFERENCE pref(browser.display.use_system_colors,true)
[task 2022-04-13T15:38:42.142Z] 15:38:42     INFO - REFTEST INFO | SET PREFERENCE pref(browser.display.document_color_use,0)
[task 2022-04-13T15:38:42.142Z] 15:38:42     INFO - REFTEST TEST-LOAD | about:blank | 42 / 47 (89%)
[task 2022-04-13T15:38:42.305Z] 15:38:42     INFO - REFTEST TEST-UNEXPECTED-FAIL | about:blank != about:blank | image comparison, max difference: 0, number of differing pixels: 0
[task 2022-04-13T15:38:42.305Z] 15:38:42     INFO - REFTEST   IMAGE: 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
[task 2022-04-13T15:38:42.305Z] 15:38:42     INFO - REFTEST INFO | Saved log: START about:blank
[task 2022-04-13T15:38:42.306Z] 15:38:42     INFO - REFTEST INFO | Saved log: [CONTENT] OnDocumentLoad triggering AfterOnLoadScripts
[task 2022-04-13T15:38:42.306Z] 15:38:42     INFO - REFTEST INFO | Saved log: Initializing canvas snapshot
[task 2022-04-13T15:38:42.306Z] 15:38:42     INFO - REFTEST INFO | Saved log: DoDrawWindow 0,0,800,1000
[task 2022-04-13T15:38:42.307Z] 15:38:42     INFO - REFTEST INFO | Saved log: [CONTENT] RecordResult fired
[task 2022-04-13T15:38:42.307Z] 15:38:42     INFO - REFTEST INFO | Saved log: RecordResult fired
[task 2022-04-13T15:38:42.307Z] 15:38:42     INFO - REFTEST INFO | Saved log: START about:blank
[task 2022-04-13T15:38:42.308Z] 15:38:42     INFO - REFTEST INFO | Saved log: [CONTENT] OnDocumentLoad triggering AfterOnLoadScripts
[task 2022-04-13T15:38:42.308Z] 15:38:42     INFO - REFTEST INFO | Saved log: Initializing canvas snapshot
[task 2022-04-13T15:38:42.308Z] 15:38:42     INFO - REFTEST INFO | Saved log: DoDrawWindow 0,0,800,1000
[task 2022-04-13T15:38:42.309Z] 15:38:42     INFO - REFTEST INFO | Saved log: [CONTENT] RecordResult fired
[task 2022-04-13T15:38:42.309Z] 15:38:42     INFO - REFTEST INFO | Saved log: RecordResult fired
[task 2022-04-13T15:38:42.309Z] 15:38:42     INFO - REFTEST TEST-END | about:blank != about:blank
Severity: S4 → --
Component: Reftest → Layout
Priority: P5 → --
Product: Testing → Core
Summary: Intermittent about:blank != about:blank | image comparison, max difference: 0, number of differing pixels: 0 → Permanent macOS 11 about:blank != about:blank | image comparison, max difference: 0, number of differing pixels: 0

Failing on this line

pref(browser.display.use_system_colors,true) pref(browser.display.document_color_use,0) test-pref(layout.css.prefers-color-scheme.content-override,0) != about:blank about:blank

in layout/reftests/high-contrast/reftest.list

This is permafailing since the changes in Bug 1692609 here. Tom, could you have a look over it? Thank you.

Flags: needinfo?(tom)

Daniel, could you see what's going on here and why is this failing on macOS only? Thank you.
From 114 total failures in the last 30 days only 2 are on macosx1015-64-qr debug the rest are on macosx1100-64-shippable-qr opt.
https://treeherder.mozilla.org/intermittent-failures/bugdetails?startday=2022-05-20&endday=2022-06-19&tree=all&bug=1764585

Flags: needinfo?(dholbert)

So the test in question is this one (newlines added for readability):

pref(browser.display.use_system_colors,true)
pref(browser.display.document_color_use,0)
test-pref(layout.css.prefers-color-scheme.content-override,0)
  != about:blank about:blank

https://searchfox.org/mozilla-central/rev/81c95e56daabc6b6cd84b65349fc6163c490f957/layout/reftests/high-contrast/reftest.list#88

That reftest came from Bug 1739699, https://hg.mozilla.org/integration/autoland/rev/498dca8a1373 -- needinfo'ing emilio.

In the failures that I've looked at here, both reftest snapshots are fully black (which is a failure since it's a not-equal test).

From setting the test's prefs locally (on Linux), it looks like black is the right coloring for the testcase (that's how about:blank looks when I have all 3 prefs set), whereas white is the right coloring for the reference case (that's how about:blank looks when I have just the first two prefs set).

Based on the failure, I assume we've got a race condition of some sort here, where our reference-case's removal of layout.css.prefers-color-scheme.content-override hasn't taken effect in time for the reference case snapshot, given that:

  • the failure was intermittent until a change to refresh-rate made it perma-failing
  • the failure happens on debug too but to a much lower rate (i.e. we're "winning" the race there due to debug-related changes in timing)

So this is probably a bug in handling the layout.css.prefers-color-scheme.content-override pref (it's not sufficiently synchronous/immediate, I guess).

If we need an extremely short-term stopgap, we could probably mark this test as skipped on macOS opt builds. Longer-term we need to figure out why the race condition is failing and address it in the code and/or in a more-robust test.

It's also conceivable that something is fiddly with the about:blank URLs here, causing the testcase-to-reference-case navigation to be considered as the same page rather than a navigation; I can't remember if the reftest harness navigates somewhere else in between. If that's part of the issue, we might be able to address that by adding ?test and ?ref as suffixes to the URL or sometihng.

Flags: needinfo?(dholbert) → needinfo?(emilio)

Changes to that pref are supposed to be async but we're already waiting for a refresh driver tick which should be enough for the pref change to be processed... https://searchfox.org/mozilla-central/rev/81c95e56daabc6b6cd84b65349fc6163c490f957/testing/specialpowers/content/SpecialPowersParent.jsm#417

I don't understand why the regressing bug changed this tho, shouldn't have changed non-rfp behavior right?

Assignee: nobody → emilio
Status: NEW → ASSIGNED
Flags: needinfo?(emilio)
Pushed by ealvarez@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/91fe1def0df9 Wait for some pref changes to take effect. r=tnikkel
Pushed by emilio@crisal.io: https://hg.mozilla.org/integration/autoland/rev/e4f0bd30e0a5 Re-add a line accidentally removed.
Regressions: 1775123

https://hg.mozilla.org/mozilla-central/rev/91fe1def0df9
https://hg.mozilla.org/mozilla-central/rev/e4f0bd30e0a5

Status: ASSIGNED → RESOLVED
Closed: 3 years ago
status-firefox103: --- → fixed
Resolution: --- → FIXED
Target Milestone: --- → 103 Branch
status-firefox102: affected → wontfix
Flags: needinfo?(tom)
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