1688804 - High frequency leakcheck | default X bytes leaked (ThreadSafeWeakReference<UnscaledFont>, UnscaledFontMac, gfxFontEntry, nsStringBuffer, nsTArray_base)

Status: RESOLVED FIXED

(Core :: XPCOM, defect, P5)

Description

[Treeherder Bug Filer]

Filed by: ncsoregi [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=327761580&repo=autoland
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/NAInejxgS5Wg96gt2Jky4g/runs/0/artifacts/public/logs/live_backing.log

---

[task 2021-01-25T22:39:26.503Z] 22:39:26     INFO - == BloatView: ALL (cumulative) LEAK AND BLOAT STATISTICS, default process 1566
[task 2021-01-25T22:39:26.503Z] 22:39:26     INFO - 
[task 2021-01-25T22:39:26.503Z] 22:39:26     INFO -      |<----------------Class--------------->|<-----Bytes------>|<----Objects---->|
[task 2021-01-25T22:39:26.503Z] 22:39:26     INFO -      |                                      | Per-Inst   Leaked|   Total      Rem|
[task 2021-01-25T22:39:26.503Z] 22:39:26     INFO -    0 |TOTAL                                 |       38      464|11761108       11|
[task 2021-01-25T22:39:26.503Z] 22:39:26     INFO - 1252 |ThreadSafeWeakReference<UnscaledFont> |       24       24|       7        1|
[task 2021-01-25T22:39:26.504Z] 22:39:26     INFO - 1295 |UnscaledFontMac                       |       56       56|       8        1|
[task 2021-01-25T22:39:26.504Z] 22:39:26     INFO - 1450 |gfxFontEntry                          |      320      320|     608        1|
[task 2021-01-25T22:39:26.506Z] 22:39:26     INFO - 1970 |nsStringBuffer                        |        8       16|  212556        2|
[task 2021-01-25T22:39:26.506Z] 22:39:26     INFO - 2006 |nsTArray_base                         |        8       48| 4764798        6|
[task 2021-01-25T22:39:26.506Z] 22:39:26     INFO - 
[task 2021-01-25T22:39:26.506Z] 22:39:26     INFO - nsTraceRefcnt::DumpStatistics: 2124 entries
[task 2021-01-25T22:39:26.506Z] 22:39:26     INFO - TEST-INFO | leakcheck | default leaked 1 ThreadSafeWeakReference<UnscaledFont>
[task 2021-01-25T22:39:26.507Z] 22:39:26     INFO - TEST-INFO | leakcheck | default leaked 1 UnscaledFontMac
[task 2021-01-25T22:39:26.507Z] 22:39:26     INFO - TEST-INFO | leakcheck | default leaked 1 gfxFontEntry
[task 2021-01-25T22:39:26.507Z] 22:39:26     INFO - TEST-INFO | leakcheck | default leaked 2 nsStringBuffer
[task 2021-01-25T22:39:26.507Z] 22:39:26     INFO - TEST-INFO | leakcheck | default leaked 6 nsTArray_base
[task 2021-01-25T22:39:26.507Z] 22:39:26     INFO - TEST-UNEXPECTED-FAIL | leakcheck | default 464 bytes leaked (ThreadSafeWeakReference<UnscaledFont>, UnscaledFontMac, gfxFontEntry, nsStringBuffer, nsTArray_base)
[task 2021-01-25T22:39:26.507Z] 22:39:26     INFO - 
[task 2021-01-25T22:39:26.507Z] 22:39:26     INFO - leakcheck | Processing leak log file /var/folders/1j/ln6_t31932b1b_36f87kcp_c000017/T/tmpcjD_tU.mozrunner/runtests_leaks_tab_pid1609.log
[task 2021-01-25T22:39:26.508Z] 22:39:26     INFO - 
[task 2021-01-25T22:39:26.513Z] 22:39:26     INFO - == BloatView: ALL (cumulative) LEAK AND BLOAT STATISTICS, tab process 1609

-[task 2021-01-25T22:39:24.210Z] 22:39:24     INFO - TEST-START | Shutdown-```

Comment 1

[Natalia Csoregi [:nataliaCs]]

Backfilled to this range: https://treeherder.mozilla.org/jobs?repo=autoland&group_state=expanded&fromchange=8ed7899fe70ce0e1f5ebb88d83154ef8b38ab655&searchStr=os%2Cx%2C10.14%2Cwebrender%2Cdebug%2Cmochitests%2Ctest-macosx1014-64-qr%2Fdebug-mochitest-browser-chrome-e10s%2Cbc1&tochange=16a3da8884f44d841f2b6c548f5daa15bcbf83b3&selectedTaskRun=N3YNCdP8RemFsErtuRHaeQ.0

Comment 2

[Intermittent Failures Robot]

22 failures in 657 pushes (0.033 failures/push) were associated with this bug yesterday.

Repository breakdown:

• autoland: 22

Platform and build breakdown:

• macosx1014-64-qr: 22
  • debug: 22

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1688804&startday=2021-01-25&endday=2021-01-25&tree=all

Comment 3

[Alexandru Michis [:malexandru]]

Marking this as resolved fixed after backing out Bug 1687622:
https://treeherder.mozilla.org/jobs?repo=autoland&resultStatus=success%2Cpending%2Crunning%2Ctestfailed%2Cbusted%2Cexception%2Crunnable&searchStr=os%2Cx%2C10.14%2Cwebrender%2Cdebug%2Cmochitests%2Ctest-macosx1014-64-qr%2Fdebug-mochitest-browser-chrome-e10s%2C&group_state=expanded&tochange=8071b6b58a60818abd28d3e2084df2825dedf364&fromchange=afb6bcdbdf4f7345d8b683ca7d3337fcebf27d81&selectedTaskRun=b4V-ak-5RvuDDCEAiz065g.0

Backout link: https://hg.mozilla.org/integration/autoland/rev/9fb5965ccb41

Comment 4

[Intermittent Failures Robot]

20 failures in 761 pushes (0.026 failures/push) were associated with this bug yesterday.

Repository breakdown:

• autoland: 19
• mozilla-central: 1

Platform and build breakdown:

• macosx1014-64-qr: 20
  • debug: 20

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1688804&startday=2021-01-26&endday=2021-01-26&tree=all

Comment 5

[Intermittent Failures Robot]

42 failures in 3891 pushes (0.011 failures/push) were associated with this bug in the last 7 days.

This is the #20 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: 41
• mozilla-central: 1

Platform and build breakdown:

• macosx1014-64-qr: 42
  • debug: 42

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1688804&startday=2021-01-25&endday=2021-01-31&tree=all