1985937 - Perma [Tier-2] MOZ_DIAGNOSTIC_ASSERT(!mUpcomingNonTraverseAPIMethodTracker) [@ mozilla::dom::Navigation::MaybeSetUpcomingNonTraverseAPIMethodTracker] | single tracking bug

Status: RESOLVED INVALID

(Core :: DOM: Navigation, defect)

Description

[Treeherder Bug Filer]

Filed by: nbeleuzu [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=524722101&repo=mozilla-central&task=SG4zGFHjROiZYLg0jjjfWw.0
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/SG4zGFHjROiZYLg0jjjfWw/runs/0/artifacts/public/logs/live_backing.log

---

[task 2025-08-29T07:04:23.754+00:00] 07:04:23     INFO -     Found by: call frame info
[task 2025-08-29T07:04:23.754+00:00] 07:04:23     INFO - 119  kernel32.dll!BaseThreadInitThunk + 0x16
[task 2025-08-29T07:04:23.754+00:00] 07:04:23     INFO -      rbx = 0x0000000000000000    rsi = 0x0000000000000000
[task 2025-08-29T07:04:23.754+00:00] 07:04:23     INFO -      rdi = 0x0000000000000000    rbp = 0x0000000000000000
[task 2025-08-29T07:04:23.754+00:00] 07:04:23     INFO -      rsp = 0x000000ffeb3ffea0    r12 = 0x0000000000000000
[task 2025-08-29T07:04:23.754+00:00] 07:04:23     INFO -      r13 = 0x0000000000000000    r14 = 0x0000000000000000
[task 2025-08-29T07:04:23.754+00:00] 07:04:23     INFO -      r15 = 0x0000000000000000    rip = 0x00007fff2a52e8d7
[task 2025-08-29T07:04:23.754+00:00] 07:04:23     INFO -     Found by: call frame info
[task 2025-08-29T07:04:23.754+00:00] 07:04:23     INFO - 120  ntdll.dll!RtlUserThreadStart + 0x2b
[task 2025-08-29T07:04:23.754+00:00] 07:04:23     INFO -      rbx = 0x0000000000000000    rbp = 0x0000000000000000
[task 2025-08-29T07:04:23.754+00:00] 07:04:23     INFO -      rsp = 0x000000ffeb3ffed0    r12 = 0x0000000000000000
[task 2025-08-29T07:04:23.754+00:00] 07:04:23     INFO -      r13 = 0x0000000000000000    r14 = 0x0000000000000000
[task 2025-08-29T07:04:23.754+00:00] 07:04:23     INFO -      r15 = 0x0000000000000000    rip = 0x00007fff2abfc34c
[task 2025-08-29T07:04:23.754+00:00] 07:04:23     INFO -     Found by: call frame info

Comment 1

[Intermittent Failures Robot]

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

Repository breakdown:

• mozilla-central: 22

Table

	no_variant
linux2404-x86_64/opt	7
macosx1470-x86_64/opt	8
windows11-x86_64/opt	7

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1985937&startday=2025-08-25&endday=2025-08-31&tree=all

Comment 2

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

Set release status flags based on info from the regressing bug 1984448

Comment 3

[Intermittent Failures Robot]

54 failures were associated with this bug in the last 7 days.
This is the #40 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:

• mozilla-central: 54

Table

	no_variant
linux2404-x86_64/opt	20
macosx1470-x86_64/opt	18
windows11-x86_64/opt	16

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1985937&startday=2025-09-01&endday=2025-09-07&tree=all

Comment 4

[Alexandra Borovova [:Sasha]]

The test is already marked as expected to have a crash.
The actual failure should be probably fixed in the scope of bug 1777171.

Comment 5

[Intermittent Failures Robot]

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

Repository breakdown:

• mozilla-central: 23

Table

	no_variant
linux2404-x86_64/opt	2
macosx1470-x86_64/opt	9
windows11-x86_64/opt	12

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1985937&startday=2025-09-08&endday=2025-09-14&tree=all

Comment 6

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

Set release status flags based on info from the regressing bug 1984448

Comment 7

[Intermittent Failures Robot]

33 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: 33

Table

	no_variant
linux2404-x86_64/opt	5
macosx1470-x86_64/opt	13
windows11-x86_64/opt	15

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1985937&startday=2025-09-15&endday=2025-09-21&tree=all

Comment 8

[Andreas Farre [:farre]]

Attachment: Bug 1985937 - Abort ongoing navigations when calling #reload. r=avandolder!

Comment 9

[Adam Vandolder [:avandolder]]

Attachment: Bug 1985937 - Always abort ongoing all navigations before firing navigate events. r?farre

Comment 10

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/71c8b086b9af
https://hg.mozilla.org/integration/autoland/rev/82df479f9b31
Always abort ongoing all navigations before firing navigate events. r=farre

Comment 11

[Sandor Molnar[:smolnar]]

https://hg.mozilla.org/mozilla-central/rev/82df479f9b31

Comment 12

[amarc]

Still happening -> https://treeherder.mozilla.org/logviewer?job_id=528948920&repo=mozilla-central&task=bxiu6zY-T-CU5UlVTJd8vA.0&lineNumber=41797

Comment 13

[Intermittent Failures Robot]

40 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: 40

Table

	no_variant
linux2404-x86_64/opt	10
macosx1470-x86_64/opt	15
windows11-x86_64/opt	15

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1985937&startday=2025-09-22&endday=2025-09-28&tree=all

Comment 14

[Intermittent Failures Robot]

53 failures were associated with this bug in the last 7 days.
This is the #39 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:

• mozilla-central: 53

Table

	no_variant
linux2404-x86_64/opt	17
macosx1470-x86_64/opt	18
windows11-x86_64/opt	18

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1985937&startday=2025-09-29&endday=2025-10-05&tree=all

Comment 15

[Intermittent Failures Robot]

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

Repository breakdown:

• mozilla-central: 24

Table

	no_variant
linux2404-x86_64/opt	8
macosx1470-x86_64/opt	8
windows11-x86_64/opt	8

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1985937&startday=2025-10-06&endday=2025-10-12&tree=all

Comment 16

[Adam Vandolder [:avandolder]]

After bug 1995598, the mUpcomingNonTraverseAPIMethodTracker, and this failing assertion, no longer exist.