1936521 - High frequency toolkit/components/contentanalysis/tests/browser/browser_content_analysis_dnd_diff_origin.js | single tracking bug

Status: RESOLVED INCOMPLETE

(Toolkit :: General, defect, P5)

Description

[Treeherder Bug Filer]

Filed by: amarc [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=486427226&repo=mozilla-central
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/E9esseHxROKE3heH1-xrlQ/runs/0/artifacts/public/logs/live_backing.log

---

[task 2024-12-11T12:24:01.223Z] 12:24:01     INFO - TEST-PASS | toolkit/components/contentanalysis/tests/browser/browser_content_analysis_dnd_diff_origin.js | [tab1->tab2:deny_drop|dragSource]| [dragend]| Successfully read from DataTransfer - "Dragged Test Data" == "Dragged Test Data" - 
[task 2024-12-11T12:24:01.224Z] 12:24:01     INFO - [tab1->tab2:deny_drop|dragSource]| Document received dragend
[task 2024-12-11T12:24:01.224Z] 12:24:01     INFO - Buffered messages finished
[task 2024-12-11T12:24:01.228Z] 12:24:01     INFO - TEST-UNEXPECTED-FAIL | toolkit/components/contentanalysis/tests/browser/browser_content_analysis_dnd_diff_origin.js | [tab1->tab2:deny_drop|dragTarget]| drop or drag leave existed - false == true - got false, expected true (operator ==)
[task 2024-12-11T12:24:01.228Z] 12:24:01     INFO - Stack trace:
[task 2024-12-11T12:24:01.228Z] 12:24:01     INFO - ok@resource://testing-common/SpecialPowersSandbox.sys.mjs:85:21
[task 2024-12-11T12:24:01.228Z] 12:24:01     INFO - DragChildContextBase/this.ok@chrome://mochikit/content/tests/SimpleTest/DragChildContextBase.sys.mjs:148:15
[task 2024-12-11T12:24:01.228Z] 12:24:01     INFO - checkDropOrDragLeave@chrome://mochikit/content/tests/SimpleTest/DragTargetChildContext.sys.mjs:15:10
[task 2024-12-11T12:24:01.228Z] 12:24:01     INFO - @chrome://mochikit/content/tests/SimpleTest/DragParentContextBase.sys.mjs:70:51
[task 2024-12-11T12:24:01.228Z] 12:24:01     INFO - execute@resource://testing-common/SpecialPowersSandbox.sys.mjs:139:12
[task 2024-12-11T12:24:01.228Z] 12:24:01     INFO - _spawnTask@resource://testing-common/SpecialPowersChild.sys.mjs:1620:15
[task 2024-12-11T12:24:01.229Z] 12:24:01     INFO - receiveMessage@resource://testing-common/SpecialPowersChild.sys.mjs:255:21
[task 2024-12-11T12:24:01.229Z] 12:24:01     INFO - JSActor query*receiveMessage@resource://testing-common/SpecialPowersParent.sys.mjs:1383:14
[task 2024-12-11T12:24:01.229Z] 12:24:01     INFO - JSActor query*spawn@resource://testing-common/SpecialPowersChild.sys.mjs:1549:17
[task 2024-12-11T12:24:01.229Z] 12:24:01     INFO - runRemote@chrome://mochikit/content/tests/SimpleTest/DragParentContextBase.sys.mjs:65:31
[task 2024-12-11T12:24:01.229Z] 12:24:01     INFO - checkDropOrDragLeave@chrome://mochikit/content/tests/SimpleTest/DragTargetParentContext.sys.mjs:36:17
[task 2024-12-11T12:24:01.229Z] 12:24:01     INFO - synthesizeMockDragAndDrop@chrome://mochikit/content/tests/SimpleTest/EventUtils.js:4556:23
[task 2024-12-11T12:24:01.229Z] 12:24:01     INFO - async*runDnd@chrome://mochitests/content/browser/dom/events/test/browser_dragdrop_impl.js:31:21
[task 2024-12-11T12:24:01.229Z] 12:24:01     INFO - runTest@chrome://mochitests/content/browser/toolkit/components/contentanalysis/tests/browser/browser_content_analysis_dnd_diff_origin.js:166:11
[task 2024-12-11T12:24:01.229Z] 12:24:01     INFO - async*test_dnd_tab1_to_tab2@chrome://mochitests/content/browser/dom/events/test/browser_dragdrop_impl.js:137:9
[task 2024-12-11T12:24:01.229Z] 12:24:01     INFO - handleTask@chrome://mochikit/content/browser-test.js:1147:26
[task 2024-12-11T12:24:01.229Z] 12:24:01     INFO - _runTaskBasedTest@chrome://mochikit/content/browser-test.js:1219:18
[task 2024-12-11T12:24:01.229Z] 12:24:01     INFO - async*Tester_execTest@chrome://mochikit/content/browser-test.js:1360:14
[task 2024-12-11T12:24:01.229Z] 12:24:01     INFO - nextTest/<@chrome://mochikit/content/browser-test.js:1136:14
[task 2024-12-11T12:24:01.229Z] 12:24:01     INFO - SimpleTest.waitForFocus/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1058:13
[task 2024-12-11T12:24:01.230Z] 12:24:01     INFO - TEST-PASS | toolkit/components/contentanalysis/tests/browser/browser_content_analysis_dnd_diff_origin.js | [tab1->tab2:deny_drop|dragTarget]| 	element received proper number of mousedown events. - 0 == 0 - 

Comment 1

[Intermittent Failures Robot]

Summary

1 failures in 4615 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 1

Platform and build breakdown:

• windows11-64-2009-asan-qr: 1
  • opt: 1

Table

	1proc	1proc-s	1proc-swr	a11y-checks	a11y-checks-s	a11y-checks-swr	a11y-checks-swr-s	condprof	condprof-s	fis	fis-hv	fis-hv-s	fis-s	headless	headless-s	http2	http3	mda-gpu	mda-gpu-s	msix	msix-s	no_variant	nofis	nofis-aab	nofis-s	nofis-ship	nofis-ship-s	nofis-spi	nofis-swr	nofis-swr-s	nogpu	nogpu-s	s	spi	spi-nw	spi-nw-1proc	spi-nw-nofis	spi-nw-nofis-s	spi-nw-s	spi-s	swr	swr-s	wmfme	wmfme-s	wr-dc0	wr-dc0-s	wr-dc1-p	wr-dc2-o	wr-dc3-c	wr-dc3-c-s	xorig	xorig-s
windows11-64-2009-asan-qr/opt																						1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1936521&startday=2024-12-09&endday=2024-12-15&tree=all

Comment 2

[Intermittent Failures Robot]

Summary

3 failures in 3774 pushes (0.001 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-beta: 1
• try: 1
• autoland: 1

Platform and build breakdown:

• windows11-64-2009-asan-qr: 3
  • opt: 3

Table

	1proc	1proc-s	1proc-swr	a11y-checks	a11y-checks-s	a11y-checks-swr	a11y-checks-swr-s	condprof-s	fis	fis-hv	fis-hv-s	fis-s	headless	headless-s	http2	http3	mda-gpu	mda-gpu-s	msix	msix-s	no_variant	nofis	nofis-aab	nofis-s	nofis-ship	nofis-ship-s	nofis-spi	nofis-swr	nofis-swr-s	nogpu	nogpu-s	s	spi	spi-nw	spi-nw-1proc	spi-nw-nofis	spi-nw-nofis-s	spi-nw-s	spi-s	swr	swr-s	vt	vt-s	wmfme	wr-dc0	wr-dc0-s	wr-dc1-p	wr-dc1-p-s	wr-dc2-o	wr-dc3-c	wr-dc3-c-s	xorig	xorig-s
windows11-64-2009-asan-qr/opt																					3

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1936521&startday=2024-12-16&endday=2024-12-22&tree=all

Comment 3

[Intermittent Failures Robot]

Summary

1 failures in 1319 pushes (0.001 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 1

Platform and build breakdown:

• windows11-64-2009-asan-qr: 1
  • opt: 1

Table

	no_variant
windows11-64-2009-asan-qr/opt	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1936521&startday=2024-12-30&endday=2025-01-05&tree=all

Comment 4

[Intermittent Failures Robot]

Summary

11 failures in 3682 pushes (0.003 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 10
• mozilla-central: 1

Platform and build breakdown:

• windows11-64-2009-asan-qr: 11
  • opt: 11

Table

	no_variant
windows11-64-2009-asan-qr/opt	11

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1936521&startday=2025-01-06&endday=2025-01-12&tree=all

Comment 5

[Intermittent Failures Robot]

Summary

1 failures in 4508 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 1

Platform and build breakdown:

• windows11-64-2009-asan-qr: 1
  • opt: 1

Table

	no_variant
windows11-64-2009-asan-qr/-/opt	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1936521&startday=2025-01-13&endday=2025-01-19&tree=all

Comment 6

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

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

Comment 7

[Treeherder Bug Filer]

New failure instance: https://treeherder.mozilla.org/logviewer?job_id=511472664&repo=autoland

Comment 8

[Intermittent Failures Robot]

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

This failure happened more than 30 times this week! Resolving this bug is a high priority.

Try to resolve this bug as soon as possible. If unresolved for 2 weeks, the affected test(s) may be disabled.

Repository breakdown:

• mozilla-central: 16
• autoland: 14
• try: 6

Table

	cf	msix	no_variant	spi-nw	spi-nw-cf
windows11-x86/opt			1
windows11-x86_64/opt	1	5	14	14	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1936521&startday=2025-06-02&endday=2025-06-08&tree=all

Comment 9

[Intermittent Failures Robot]

42 failures were associated with this bug in the last 7 days.
This is the #32 most frequent failure this week.

This failure happened more than 30 times this week! Resolving this bug is a high priority.

Try to resolve this bug as soon as possible. If unresolved for 2 weeks, the affected test(s) may be disabled.

Repository breakdown:

• autoland: 15
• try: 6
• mozilla-central: 21

Table

	msix	no_variant	spi-nw
windows11-x86_64/opt	1	1	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1936521&startday=2025-06-09&endday=2025-06-15&tree=all

Comment 10

[amarc]

Hi Greg, could you please take a look at this frequent failure?

Recent failure log -> https://treeherder.mozilla.org/logviewer?job_id=513442159&repo=autoland&lineNumber=6850

Comment 11

[Intermittent Failures Robot]

16 failures were associated with this bug yesterday.

Repository breakdown:

• autoland: 11
• mozilla-central: 4
• try: 1

Table

	no_variant	spi-nw
windows11-x86_64/opt	1	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1936521&startday=2025-06-16&endday=2025-06-16&tree=all

Comment 12

[Greg Stoll :gstoll]

It's weird that this started failing two weeks ago; AFAICT there haven't been any content analysis changes that landed around that time.

The test is failing because the call from the mock to the real GetURIForDropEvent() is returning NS_ERROR_FAILURE.

Looking at the real method, it does return NS_ERROR_FAILURE in a few cases - if we can't get the browser parent, or we can't get the browsing context from the browser parent. I guess I can return different errors in those cases and at least see which case we're hitting.

Comment 13

[Greg Stoll :gstoll]

Attachment: Bug 1936521 - set different errors for different ways GetURIForDropEvent() can fail r=#dlp-reviewers!

Comment 14

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/49256f5d794d
https://hg.mozilla.org/integration/autoland/rev/15581637d218
set different errors for different ways GetURIForDropEvent() can fail r=dlp-reviewers,handyman

Comment 15

[Cristian Tuns]

https://hg.mozilla.org/mozilla-central/rev/15581637d218

Comment 16

[Intermittent Failures Robot]

33 failures were associated with this bug in the last 7 days.
This is the #41 most frequent failure this week.

This failure happened more than 30 times this week! Resolving this bug is a high priority.

Try to resolve this bug as soon as possible. If unresolved for 2 weeks, the affected test(s) may be disabled.

Repository breakdown:

• autoland: 17
• try: 5
• mozilla-central: 11

Table

	msix	no_variant	spi-nw
windows11-x86_64/opt	2	12	19

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1936521&startday=2025-06-16&endday=2025-06-22&tree=all

Comment 17

[Greg Stoll :gstoll]

The failures are now returning NS_ERROR_NOT_AVAILABLE, indicating that dom::BrowserParent::GetBrowserParentFromLayersId() is returning null.

Comment 18

[Greg Stoll :gstoll]

Ah, this is probably related/the real cause:

GECKO(9936) | console.error: "MockRegistrar: Creating original instance failed" [Exception... "Cannot modify properties of a WrappedNative" nsresult: "0x80570034 (NS_ERROR_XPC_CANT_MODIFY_PROP_ON_WN)" location: "JS frame :: resource://testing-common/MockRegistrar.sys.mjs :: createInstance :: line 91" data: no]

So we're probably failing to create the new mock, and maybe we're using an old one or something.

Comment 19

[Intermittent Failures Robot]

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

Repository breakdown:

• autoland: 1
• mozilla-beta: 1

Table

	no_variant
windows11-x86/opt	2

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1936521&startday=2025-06-23&endday=2025-06-29&tree=all

Comment 20

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

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