1760018 - Intermittent leakcheck (linux debug, dom/security/test/csp/) | default 230504 bytes leaked (BackstagePass, BrowsingContext, BrowsingContextGroup, BrowsingContextWebProgress, CanonicalBrowsingContext, ...)

Status: RESOLVED FIXED

(Core :: Networking, defect, P5)

Description

[Treeherder Bug Filer]

Filed by: ncsoregi [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=371377343&repo=autoland
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/brzNPjFDTmCNSNWhqPtMKw/runs/0/artifacts/public/logs/live_backing.log

---

[task 2022-03-17T12:21:36.006Z] 12:21:36     INFO - == BloatView: ALL (cumulative) LEAK AND BLOAT STATISTICS, default process 5321
[task 2022-03-17T12:21:36.007Z] 12:21:36     INFO - 
[task 2022-03-17T12:21:36.008Z] 12:21:36     INFO -      |<----------------Class--------------->|<-----Bytes------>|<----Objects---->|
[task 2022-03-17T12:21:36.009Z] 12:21:36     INFO -      |                                      | Per-Inst   Leaked|   Total      Rem|
[task 2022-03-17T12:21:36.010Z] 12:21:36     INFO -    0 |TOTAL                                 |       61     5712| 5731364       33|
[task 2022-03-17T12:21:36.011Z] 12:21:36     INFO -   88 |BackstagePass                         |      160      160|       1        1|
[task 2022-03-17T12:21:36.012Z] 12:21:36     INFO -  103 |BrowsingContext                       |     1160     1160|      42        1|
[task 2022-03-17T12:21:36.013Z] 12:21:36     INFO -  104 |BrowsingContextGroup                  |      280      280|      57        1|
[task 2022-03-17T12:21:36.014Z] 12:21:36     INFO -  105 |BrowsingContextWebProgress            |      144      144|      30        1|
[task 2022-03-17T12:21:36.015Z] 12:21:36     INFO -  146 |CanonicalBrowsingContext              |     1360     1360|      42        1|
[task 2022-03-17T12:21:36.015Z] 12:21:36     INFO -  161 |ChildSHistory                         |      176      176|      30        1|
[task 2022-03-17T12:21:36.016Z] 12:21:36     INFO -  197 |CondVar                               |       80      240|     679        3|
[task 2022-03-17T12:21:36.017Z] 12:21:36     INFO -  527 |JS Object                             |        8        8|       1        1|
[task 2022-03-17T12:21:36.018Z] 12:21:36     INFO -  614 |Mutex                                 |       72      288|    8731        4|
[task 2022-03-17T12:21:36.019Z] 12:21:36     INFO - 1255 |ThreadEventTarget                     |       64       64|     120        1|
[task 2022-03-17T12:21:36.020Z] 12:21:36     INFO - 1261 |ThreadTargetSink                      |       16       16|     120        1|
[task 2022-03-17T12:21:36.021Z] 12:21:36     INFO - 1264 |ThrottledEventQueue                   |       40       80|     126        2|
[task 2022-03-17T12:21:36.021Z] 12:21:36     INFO - 1265 |ThrottledEventQueue::Inner            |      272      544|     126        2|
[task 2022-03-17T12:21:36.022Z] 12:21:36     INFO - 1400 |XPCNativeInterface                    |       56       56|     344        1|
[task 2022-03-17T12:21:36.022Z] 12:21:36     INFO - 1401 |XPCNativeMember                       |       16       16|   11686        1|
[task 2022-03-17T12:21:36.023Z] 12:21:36     INFO - 1402 |XPCNativeSet                          |       32       32|     887        1|
[task 2022-03-17T12:21:36.023Z] 12:21:36     INFO - 1405 |XPCWrappedNative                      |       96       96|    7660        1|
[task 2022-03-17T12:21:36.024Z] 12:21:36     INFO - 1406 |XPCWrappedNativeProto                 |       40       40|     563        1|
[task 2022-03-17T12:21:36.026Z] 12:21:36     INFO - 1408 |XPCWrappedNativeTearOff               |       32       32|    9144        1|
[task 2022-03-17T12:21:36.026Z] 12:21:36     INFO - 1611 |nsAuthURLParser                       |       24       24|       2        1|
[task 2022-03-17T12:21:36.027Z] 12:21:36     INFO - 1837 |nsJSPrincipals                        |       24       24|    4928        1|
[task 2022-03-17T12:21:36.027Z] 12:21:36     INFO - 1932 |nsSecureBrowserUI                     |       56       56|      30        1|
[task 2022-03-17T12:21:36.028Z] 12:21:36     INFO - 1952 |nsStandardURL                         |      336      336|   11002        1|
[task 2022-03-17T12:21:36.030Z] 12:21:36     INFO - 1961 |nsStringBuffer                        |        8       16|  192015        2|
[task 2022-03-17T12:21:36.030Z] 12:21:36     INFO - 2003 |nsThread                              |      464      464|     164        1|
[task 2022-03-17T12:21:36.031Z] 12:21:36     INFO - 
[task 2022-03-17T12:21:36.032Z] 12:21:36     INFO - nsTraceRefcnt::DumpStatistics: 2120 entries
[task 2022-03-17T12:21:36.032Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 1 BackstagePass
[task 2022-03-17T12:21:36.033Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 1 BrowsingContext
[task 2022-03-17T12:21:36.034Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 1 BrowsingContextGroup
[task 2022-03-17T12:21:36.035Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 1 BrowsingContextWebProgress
[task 2022-03-17T12:21:36.035Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 1 CanonicalBrowsingContext
[task 2022-03-17T12:21:36.036Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 1 ChildSHistory
[task 2022-03-17T12:21:36.037Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 3 CondVar
[task 2022-03-17T12:21:36.038Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 1 JS Object
[task 2022-03-17T12:21:36.038Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 4 Mutex
[task 2022-03-17T12:21:36.039Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 1 ThreadEventTarget
[task 2022-03-17T12:21:36.040Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 1 ThreadTargetSink
[task 2022-03-17T12:21:36.040Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 2 ThrottledEventQueue
[task 2022-03-17T12:21:36.041Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 2 ThrottledEventQueue::Inner
[task 2022-03-17T12:21:36.042Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 1 XPCNativeInterface
[task 2022-03-17T12:21:36.042Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 1 XPCNativeMember
[task 2022-03-17T12:21:36.043Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 1 XPCNativeSet
[task 2022-03-17T12:21:36.044Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 1 XPCWrappedNative
[task 2022-03-17T12:21:36.045Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 1 XPCWrappedNativeProto
[task 2022-03-17T12:21:36.045Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 1 XPCWrappedNativeTearOff
[task 2022-03-17T12:21:36.046Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 1 nsAuthURLParser
[task 2022-03-17T12:21:36.047Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 1 nsJSPrincipals
[task 2022-03-17T12:21:36.047Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 1 nsSecureBrowserUI
[task 2022-03-17T12:21:36.048Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 1 nsStandardURL
[task 2022-03-17T12:21:36.049Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 2 nsStringBuffer
[task 2022-03-17T12:21:36.050Z] 12:21:36     INFO - TEST-INFO | leakcheck | default leaked 1 nsThread
[task 2022-03-17T12:21:36.050Z] 12:21:36     INFO - TEST-UNEXPECTED-FAIL | leakcheck | default 5712 bytes leaked (BackstagePass, BrowsingContext, BrowsingContextGroup, BrowsingContextWebProgress, CanonicalBrowsingContext, ...)
[task 2022-03-17T12:21:36.051Z] 12:21:36     INFO - 

Comment 1

[Andrew McCreight [:mccr8]]

Leak while running the dom/security/test/mixedcontentblocker/ tests. Possibly interesting objects in the leak are the ChildSHistory and the nsAuthURLParser.

Comment 2

[Intermittent Failures Robot]

1 failures in 3304 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 1

Platform and build breakdown:

• linux1804-64-qr: 1
  • debug: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2022-03-14&endday=2022-03-20&tree=all

Comment 3

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

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

Comment 4

[Treeherder Bug Filer]

New failure instance: https://treeherder.mozilla.org/logviewer?job_id=377224046&repo=autoland

Comment 5

[Intermittent Failures Robot]

1 failures in 3540 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 1

Platform and build breakdown:

• linux1804-64-qr: 1
  • debug: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2022-05-02&endday=2022-05-08&tree=all

Comment 6

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

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

Comment 7

[Treeherder Bug Filer]

New failure instance: https://treeherder.mozilla.org/logviewer?job_id=381341540&repo=autoland

Comment 8

[Intermittent Failures Robot]

1 failures in 3170 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 1

Platform and build breakdown:

• windows10-64-2004-qr: 1
  • debug: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2022-06-13&endday=2022-06-19&tree=all

Comment 9

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

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

Comment 10

[Treeherder Bug Filer]

New failure instance: https://treeherder.mozilla.org/logviewer?job_id=394040069&repo=autoland

Comment 11

[Intermittent Failures Robot]

1 failures in 2793 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 1

Platform and build breakdown:

• windows10-32-2004-qr: 1
  • debug: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2022-10-17&endday=2022-10-23&tree=all

Comment 12

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

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

Comment 13

[Treeherder Bug Filer]

New failure instance: https://treeherder.mozilla.org/logviewer?job_id=399641227&repo=autoland

Comment 14

[Intermittent Failures Robot]

4 failures in 3558 pushes (0.001 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 2
• toolchains: 1
• mozilla-central: 1

Platform and build breakdown:

• windows10-64-2004-qr: 2
  • debug: 2
• linux1804-64-qr: 1
  • debug: 1
• windows10-32-2004-qr: 1
  • debug: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2022-12-12&endday=2022-12-18&tree=all

Comment 15

[Intermittent Failures Robot]

4 failures in 2999 pushes (0.001 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 4

Platform and build breakdown:

• windows10-32-2004-qr: 1
  • debug: 1
• windows10-64-2004-qr: 3
  • debug: 3

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2022-12-19&endday=2022-12-25&tree=all

Comment 16

[Intermittent Failures Robot]

11 failures in 1328 pushes (0.008 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 7
• mozilla-central: 4

Platform and build breakdown:

• windows10-64-2004-qr: 7
  • debug: 7
• windows10-32-2004-qr: 3
  • debug: 3
• linux1804-64-qr: 1
  • debug: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2022-12-26&endday=2023-01-01&tree=all

Comment 17

[Intermittent Failures Robot]

27 failures in 2607 pushes (0.01 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 17
• mozilla-central: 10

Platform and build breakdown:

• windows10-32-2004-qr: 5
  • debug: 5
• windows10-64-2004-qr: 20
  • debug: 20
• linux1804-64-qr: 2
  • debug: 2

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2023-01-02&endday=2023-01-08&tree=all

Comment 18

[Intermittent Failures Robot]

11 failures in 3530 pushes (0.003 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 4
• autoland: 7

Platform and build breakdown:

• windows10-64-2004-qr: 7
  • debug: 7
• windows10-32-2004-qr: 1
  • debug: 1
• linux1804-64-qr: 3
  • debug: 3

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2023-01-09&endday=2023-01-15&tree=all

Comment 19

[Intermittent Failures Robot]

22 failures in 3717 pushes (0.006 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 7
• autoland: 15

Platform and build breakdown:

• windows10-64-2004-qr: 14
  • debug: 14
• linux1804-64-qr: 2
  • debug: 2
• windows10-32-2004-qr: 6
  • debug: 6

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2023-01-16&endday=2023-01-22&tree=all

Comment 20

[Intermittent Failures Robot]

20 failures in 3914 pushes (0.005 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 14
• mozilla-central: 6

Platform and build breakdown:

• windows10-64-2004-qr: 13
  • debug: 13
• linux1804-64-qr: 3
  • debug: 3
• windows10-32-2004-qr: 4
  • debug: 4

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2023-01-23&endday=2023-01-29&tree=all

Comment 21

[Intermittent Failures Robot]

17 failures in 3606 pushes (0.005 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 6
• autoland: 11

Platform and build breakdown:

• windows10-64-2004-qr: 11
  • debug: 11
• linux1804-64-qr: 3
  • debug: 3
• windows10-32-2004-qr: 3
  • debug: 3

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2023-01-30&endday=2023-02-05&tree=all

Comment 22

[Intermittent Failures Robot]

16 failures in 3766 pushes (0.004 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 14
• mozilla-central: 2

Platform and build breakdown:

• windows10-32-2004-qr: 6
  • debug: 6
• windows10-64-2004-qr: 8
  • debug: 8
• linux1804-64-qr: 2
  • debug: 2

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2023-02-06&endday=2023-02-12&tree=all

Comment 23

[Intermittent Failures Robot]

17 failures in 3856 pushes (0.004 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 17

Platform and build breakdown:

• linux1804-64-qr: 3
  • debug: 3
• windows10-32-2004-qr: 7
  • debug: 7
• windows10-64-2004-qr: 7
  • debug: 7

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2023-02-13&endday=2023-02-19&tree=all

Comment 24

[Intermittent Failures Robot]

16 failures in 3643 pushes (0.004 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 16

Platform and build breakdown:

• windows10-64-2004-qr: 11
  • debug: 11
• windows10-32-2004-qr: 2
  • debug: 2
• linux1804-64-qr: 1
  • debug: 1
• windows11-64-2009-qr: 2
  • debug: 2

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2023-02-20&endday=2023-02-26&tree=all

Comment 25

[Natalia Csoregi [:nataliaCs]]

Update:

There have been 37 failures within the last 7 days:

• 4 failures on Linux 18.04 x64 WebRender debug
• 5 failures on Windows 10 x86 2004 WebRender debug
• 16 failures on Windows 10 x64 2004 WebRender debug
• 3 failures on Windows 11 x86 22H2 WebRender debug
• 9 failures on Windows 11 x64 22H2 WebRender debug

Recent failure log: https://treeherder.mozilla.org/logviewer?job_id=407840786&repo=mozilla-central&lineNumber=118813

[task 2023-03-04T22:56:16.029Z] 22:56:16     INFO - 
[task 2023-03-04T22:56:16.030Z] 22:56:16     INFO - nsTraceRefcnt::DumpStatistics: 2173 entries
[task 2023-03-04T22:56:16.030Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 1 BackstagePass
[task 2023-03-04T22:56:16.030Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 1 BrowsingContext
[task 2023-03-04T22:56:16.031Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 1 BrowsingContextGroup
[task 2023-03-04T22:56:16.031Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 1 BrowsingContextWebProgress
[task 2023-03-04T22:56:16.031Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 1 CanonicalBrowsingContext
[task 2023-03-04T22:56:16.032Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 1 ChildSHistory
[task 2023-03-04T22:56:16.032Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 1 ComponentModuleLoader
[task 2023-03-04T22:56:16.032Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 3 CondVar
[task 2023-03-04T22:56:16.033Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 1 ExpirationTrackerObserver
[task 2023-03-04T22:56:16.033Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 1 JS Object
[task 2023-03-04T22:56:16.033Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 1 ModuleLoaderBase
[task 2023-03-04T22:56:16.034Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 4 Mutex
[task 2023-03-04T22:56:16.034Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 2 SHEntrySharedParentState
[task 2023-03-04T22:56:16.035Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 2 SessionHistoryEntry
[task 2023-03-04T22:56:16.036Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 1 ThreadEventTarget
[task 2023-03-04T22:56:16.036Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 1 ThreadTargetSink
[task 2023-03-04T22:56:16.037Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 2 ThrottledEventQueue
[task 2023-03-04T22:56:16.037Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 2 ThrottledEventQueue::Inner
[task 2023-03-04T22:56:16.038Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 2 WeakReference
[task 2023-03-04T22:56:16.038Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 1 XPCNativeInterface
[task 2023-03-04T22:56:16.039Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 1 XPCNativeMember
[task 2023-03-04T22:56:16.039Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 1 XPCNativeSet
[task 2023-03-04T22:56:16.039Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 1 XPCWrappedNative
[task 2023-03-04T22:56:16.040Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 1 XPCWrappedNativeProto
[task 2023-03-04T22:56:16.040Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 1 XPCWrappedNativeTearOff
[task 2023-03-04T22:56:16.041Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 2 mozilla::dom::HistoryEntryCounterForBr
[task 2023-03-04T22:56:16.041Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 1 nsAuthURLParser
[task 2023-03-04T22:56:16.042Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 3 nsJSPrincipals
[task 2023-03-04T22:56:16.042Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 1 nsLayoutHistoryState
[task 2023-03-04T22:56:16.043Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 1 nsSHistory
[task 2023-03-04T22:56:16.043Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 1 nsSecureBrowserUI
[task 2023-03-04T22:56:16.044Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 3 nsSimpleURI
[task 2023-03-04T22:56:16.044Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 3 nsStandardURL
[task 2023-03-04T22:56:16.045Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 14 nsStringBuffer
[task 2023-03-04T22:56:16.045Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 1 nsThread
[task 2023-03-04T22:56:16.045Z] 22:56:16     INFO - TEST-INFO | leakcheck | default leaked 2 nsWeakReference
[task 2023-03-04T22:56:16.047Z] 22:56:16     INFO - TEST-UNEXPECTED-FAIL | leakcheck | default 8536 bytes leaked (BackstagePass, BrowsingContext, BrowsingContextGroup, BrowsingContextWebProgress, CanonicalBrowsingContext, ...)
[task 2023-03-04T22:56:16.047Z] 22:56:16     INFO - 

Gian-Carlo, can you help us assign this to someone?
Thank you.

Comment 26

[Intermittent Failures Robot]

42 failures in 3752 pushes (0.011 failures/push) were associated with this bug in the last 7 days.

This is the #35 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: 32
• mozilla-central: 10

Platform and build breakdown:

• windows11-64-2009-qr: 12
  • debug: 12
• windows10-32-2004-qr: 6
  • debug: 6
• windows10-64-2004-qr: 17
  • debug: 17
• linux1804-64-qr: 4
  • debug: 4
• windows11-32-2009-qr: 3
  • debug: 3

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2023-02-27&endday=2023-03-05&tree=all

Comment 27

[Andrew McCreight [:mccr8]]

It looks like there was a big spike in this leak on Saturday, mostly happening in mochitest-browser-chrome-3. I looked at four of these bc3 logs, and they were all happening while running tests in the toolkit/components/places/tests/browser/ directory, so I'll move this over there.

Comment 28

[Andrew McCreight [:mccr8]]

Nothing has changed in the browser.ini for that file since 2021, so it isn't a new test causing the issue.

Comment 29

[Andrew McCreight [:mccr8]]

There was always a parent process leak in the logs I looked at. About half of the time, there was also a content process leak. In 2 such logs I looked at, the leaking process was created while running browser_bug646422.js. In the third, it was created while running browser_bug680727.js. That may or may not mean anything.

Comment 30

[Andrew McCreight [:mccr8]]

It looks like the spike has gone away for some reason. Maybe a patch got backed out for other reasons.

Comment 31

[Intermittent Failures Robot]

3 failures in 3966 pushes (0.001 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 3

Platform and build breakdown:

• windows10-32-2004-qr: 1
  • debug: 1
• windows10-64-2004-qr: 1
  • debug: 1
• windows11-64-2009-qr: 1
  • debug: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2023-03-06&endday=2023-03-12&tree=all

Comment 32

[Intermittent Failures Robot]

1 failures in 3761 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 1

Platform and build breakdown:

• linux1804-64-qr: 1
  • debug: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2023-03-13&endday=2023-03-19&tree=all

Comment 33

[Intermittent Failures Robot]

35 failures in 4161 pushes (0.008 failures/push) were associated with this bug in the last 7 days.

This is the #44 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: 27
• try: 3
• mozilla-central: 5

Platform and build breakdown:

• linux1804-64-qr: 35
  • debug: 35

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2023-03-20&endday=2023-03-26&tree=all

Comment 34

[Mark Banner (:standard8)]

The latest leaks of the last week look like they're in dom/security/test/, but there's some ones earlier in the week that have been misclassified. I'll raise this on #sheriffs.

Comment 35

[Mark Banner (:standard8)]

(In reply to Mark Banner (:standard8) from comment #34)

The latest leaks of the last week look like they're in dom/security/test/, but there's some ones earlier in the week that have been misclassified. I'll raise this on #sheriffs.

I was wrong, there's actually two sets of failures here. The toolkit/components/places ones which occurred only on Windows, peaked at the start of the week. The dom/security/test/csp ones were on Linux and have peaked at the end of the week.

I've therefore filed bug 1824695 to try and have that one specific to the places issues, and this one specific to the dom issues.

Comment 36

[Intermittent Failures Robot]

34 failures in 3863 pushes (0.009 failures/push) were associated with this bug in the last 7 days.

This is the #36 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: 20
• mozilla-central: 8
• try: 6

Platform and build breakdown:

• linux1804-64-qr: 34
  • debug: 34

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2023-03-27&endday=2023-04-02&tree=all

Comment 37

[Intermittent Failures Robot]

28 failures in 3386 pushes (0.008 failures/push) were associated with this bug in the last 7 days.

This is the #21 most frequent failure this week.

Repository breakdown:

• mozilla-central: 8
• autoland: 15
• try: 5

Platform and build breakdown:

• linux1804-64-qr: 28
  • debug: 28

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2023-04-03&endday=2023-04-09&tree=all

Comment 38

[Natalia Csoregi [:nataliaCs]]

Update

There have been 38 failures within the last 7 days, all of them on Linux 18.04 x64 WebRender debug.

Recent failure log: https://treeherder.mozilla.org/logviewer?job_id=412611282&repo=autoland&lineNumber=8054

[task 2023-04-16T09:12:41.142Z] 09:12:41     INFO - 
[task 2023-04-16T09:12:41.142Z] 09:12:41     INFO - nsTraceRefcnt::DumpStatistics: 2261 entries
[task 2023-04-16T09:12:41.143Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 1 BackstagePass
[task 2023-04-16T09:12:41.144Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 1 BrowsingContext
[task 2023-04-16T09:12:41.145Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 1 BrowsingContextGroup
[task 2023-04-16T09:12:41.145Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 1 BrowsingContextWebProgress
[task 2023-04-16T09:12:41.146Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 1 CanonicalBrowsingContext
[task 2023-04-16T09:12:41.147Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 1 ChildSHistory
[task 2023-04-16T09:12:41.147Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 1 ComponentModuleLoader
[task 2023-04-16T09:12:41.148Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 3 CondVar
[task 2023-04-16T09:12:41.149Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 1 ExpirationTrackerObserver
[task 2023-04-16T09:12:41.150Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 1 JS Object
[task 2023-04-16T09:12:41.150Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 1 ModuleLoaderBase
[task 2023-04-16T09:12:41.151Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 224 Mutex
[task 2023-04-16T09:12:41.152Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 71 ReferrerInfo
[task 2023-04-16T09:12:41.153Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 74 SHEntrySharedParentState
[task 2023-04-16T09:12:41.153Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 132 SessionHistoryEntry
[task 2023-04-16T09:12:41.154Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 1 ThreadEventTarget
[task 2023-04-16T09:12:41.155Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 1 ThreadTargetSink
[task 2023-04-16T09:12:41.156Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 2 ThrottledEventQueue
[task 2023-04-16T09:12:41.156Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 2 ThrottledEventQueue::Inner
[task 2023-04-16T09:12:41.157Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 2 WeakReference
[task 2023-04-16T09:12:41.158Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 1 XPCNativeInterface
[task 2023-04-16T09:12:41.158Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 1 XPCNativeMember
[task 2023-04-16T09:12:41.159Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 1 XPCNativeSet
[task 2023-04-16T09:12:41.159Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 1 XPCWrappedNative
[task 2023-04-16T09:12:41.160Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 1 XPCWrappedNativeProto
[task 2023-04-16T09:12:41.161Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 1 XPCWrappedNativeTearOff
[task 2023-04-16T09:12:41.161Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 26 mozilla::dom::HistoryEntryCounterForBr
[task 2023-04-16T09:12:41.162Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 1 nsAuthURLParser
[task 2023-04-16T09:12:41.162Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 73 nsCSPContext
[task 2023-04-16T09:12:41.163Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 221 nsJSPrincipals
[task 2023-04-16T09:12:41.164Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 74 nsLayoutHistoryState
[task 2023-04-16T09:12:41.164Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 1 nsSHistory
[task 2023-04-16T09:12:41.165Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 1 nsSecureBrowserUI
[task 2023-04-16T09:12:41.165Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 3 nsSimpleNestedURI
[task 2023-04-16T09:12:41.166Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 7 nsSimpleURI
[task 2023-04-16T09:12:41.167Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 439 nsStandardURL
[task 2023-04-16T09:12:41.167Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 567 nsStringBuffer
[task 2023-04-16T09:12:41.168Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 1 nsThread
[task 2023-04-16T09:12:41.168Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 1 nsTimer
[task 2023-04-16T09:12:41.169Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 1 nsTimerImpl
[task 2023-04-16T09:12:41.170Z] 09:12:41     INFO - TEST-INFO | leakcheck | default leaked 2 nsWeakReference
[task 2023-04-16T09:12:41.171Z] 09:12:41     INFO - TEST-UNEXPECTED-FAIL | leakcheck | default 230536 bytes leaked (BackstagePass, BrowsingContext, BrowsingContextGroup, BrowsingContextWebProgress, CanonicalBrowsingContext, ...)
[task 2023-04-16T09:12:41.171Z] 09:12:41     INFO - 

Last test successfully run:

[task 2023-04-16T09:12:22.944Z] 09:12:22     INFO - TEST-OK | dom/security/test/csp/test_win_open_blocked.html | took 2625ms
[task 2023-04-16T09:12:23.257Z] 09:12:23     INFO - TEST-START | dom/security/test/csp/test_xslt_inherits_csp.html
[task 2023-04-16T09:12:25.513Z] 09:12:25     INFO - TEST-PASS | dom/security/test/csp/test_xslt_inherits_csp.html | The CSP did block injected JS  
[task 2023-04-16T09:12:25.529Z] 09:12:25     INFO - GECKO(5003) | MEMORY STAT | vsize 10794MB | residentFast 175MB | heapAllocated 14MB
[task 2023-04-16T09:12:25.568Z] 09:12:25     INFO - TEST-OK | dom/security/test/csp/test_xslt_inherits_csp.html | took 2311ms

Mark, is this something you are still looking into?

Comment 39

[Mark Banner (:standard8)]

(In reply to Natalia Csoregi [:nataliaCs] from comment #38)

Mark, is this something you are still looking into?

No, these all appear to be dom/security/csp related, hence forwarding to triage owner.

Comment 40

[Intermittent Failures Robot]

51 failures in 3206 pushes (0.016 failures/push) were associated with this bug in the last 7 days.

This is the #18 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: 27
• mozilla-beta: 8
• mozilla-central: 11
• try: 5

Platform and build breakdown:

• linux1804-64-qr: 51
  • debug: 51

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2023-04-10&endday=2023-04-16&tree=all

Comment 41

[Frederik Braun [:freddy]]

(In reply to Natalia Csoregi [:nataliaCs] from comment #38)

Update

There have been 38 failures within the last 7 days, all of them on Linux 18.04 x64 WebRender debug.

Recent failure log: https://treeherder.mozilla.org/logviewer?job_id=412611282&repo=autoland&lineNumber=8054

I really want to help here, but I have no idea where to even start.
From looking at this linked log and scrolling up a bit, towards line 7180 it seems that the test is crashing due to JSWindowActorChild::SendRawMessage issues and IPC Connection Errors.

How sure are we that this issue is actually related to the particular test case?
Are we even concerned about leaks if the process is crashing anyway?

Comment 42

[Frederik Braun [:freddy]]

OK, thanks to Tom Schuster I figured that those crashes are because we leak. Makes sense.
Next step, it seems that for analyzing the leaks we would require GC and CC logs, which this job generated but did not attach to the artifacts. What can I even do here?

Tom says you could help explaining next steps here?

Comment 43

[Andrew McCreight [:mccr8]]

The failures are all in mochitest-plain-http3, which might be interesting. Also only on Linux. It is possible that the leak just shows up slightly differently on other configurations.

We don't get GC/CC logs by default in automation. leakcheck is using a different kind of counter to detect leaks.

The first step would be to get GC/CC logs locally. If that is difficult, you can get them in automation and download the logs, though that's a bit finicky. I can try taking a first look at this later today.

Comment 44

[Andrew McCreight [:mccr8]]

I noticed that a large number of tests in this directory are disabled in http3 is enabled. Maybe there's some odd test ordering issue that shows up in that case.

Comment 45

[Andrew McCreight [:mccr8]]

I managed to get CC+DMD logs for this leak on try.

The object keeping things alive is a BrowsingContext, with one missing strong reference. The missing strong reference looks to either be a reference from the object itself (at a byte offset of 1120 or 1128) or from a PLDHashTable that is a field of the same BrowsingContextGroup that the BrowsingContext has a strong reference to (at a byte offset of 64). The latter would cause a cycle, but mContexts is the only hash table that looks like it would match, and that is cycle collected already, but it isn't showing up in the CC log, so maybe that's a red herring (it could have gotten removed from the hash table but the pointer is still around or something). I'll look some more tomorrow.

Comment 46

[Intermittent Failures Robot]

55 failures in 4004 pushes (0.014 failures/push) were associated with this bug in the last 7 days.

This is the #19 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: 14
• autoland: 26
• mozilla-beta: 10
• try: 5

Platform and build breakdown:

• linux1804-64-qr: 55
  • debug: 55

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2023-04-17&endday=2023-04-23&tree=all

Comment 47

[Andrew McCreight [:mccr8]]

The two self-references are from mDeprioritizedLoadRunner due to LinkedList weirdness. They aren't strong and they aren't actually for the BC.

I think the hash table reference is from the BC group of the BC (mContexts). The RefPtr<> dtor releases the BC but does not zero it out, so I suspect that the BC was removed, but a dead pointer was sitting around in memory. The BC group is in the CC graph, and nothing shows up for mContexts, so I think it is actually empty.

Next I'm going to try taking the DMD heap dump during the CC. It is possible that the missing heap reference to the BC went away after the BC, but before the DMD memory dump, which happens very late.

Comment 48

[Intermittent Failures Robot]

51 failures in 3177 pushes (0.016 failures/push) were associated with this bug in the last 7 days.

This is the #15 most frequent failure this week.

** This test has failed more than 150 times in the last 21 days. It should be disabled until it can be fixed. **

Repository breakdown:

• autoland: 23
• mozilla-central: 10
• try: 6
• mozilla-beta: 12

Platform and build breakdown:

• linux1804-64-qr: 51
  • debug: 51

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2023-04-24&endday=2023-04-30&tree=all

Comment 49

[Andrew McCreight [:mccr8]]

I thought I hadn't been able to reproduce the leak with refcount logging enabled, but I think I accidentally broke the leak checker, and I have actually captured logs for the leaking case.

In the leaking case, we get a release with this stack, after the shutdown CC:

<BrowsingContext> 0x7f7de45f4200 0 Release 3 [thread 0x7f7e2be2cee0]
#01: mozilla::dom::BrowsingContext::Release() [docshell/base/BrowsingContext.cpp:1782]
#02: mozilla::dom::CanonicalBrowsingContext::Release() [docshell/base/CanonicalBrowsingContext.cpp:3054]
#03: mozilla::net::ParentChannelListener::~ParentChannelListener() [netwerk/protocol/http/ParentChannelListener.cpp:49]
#04: mozilla::net::ParentChannelListener::Release() [netwerk/protocol/http/ParentChannelListener.cpp:56]
#05: mozilla::net::HttpBaseChannel::~HttpBaseChannel() [netwerk/protocol/http/HttpBaseChannel.cpp:261]
#06: mozilla::net::nsHttpChannel::~nsHttpChannel() [netwerk/protocol/http/nsHttpChannel.cpp:345]
#07: mozilla::net::nsHttpChannel::~nsHttpChannel() [netwerk/protocol/http/nsHttpChannel.cpp:324]
#08: mozilla::net::HttpBaseChannel::Release() [netwerk/protocol/http/HttpBaseChannel.cpp:404]
#09: {virtual override thunk({offset(-80)}, mozilla::net::nsHttpChannel::Release())} [netwerk/protocol/http/nsHttpChannel.cpp:0]
#10: PLDHashTable::~PLDHashTable() [xpcom/ds/PLDHashTable.cpp:293]
#11: mozilla::net::RedirectChannelRegistrar::Release() [netwerk/base/RedirectChannelRegistrar.cpp:14]
#12: nsNetShutdown() [netwerk/build/nsNetModule.cpp:240]
#13: mozilla::xpcom::StaticComponents::Shutdown()
#14: nsComponentManagerImpl::Shutdown() [xpcom/components/nsComponentManager.cpp:555]
#15: mozilla::ShutdownXPCOM(nsIServiceManager*) [xpcom/build/XPCOMInit.cpp:689]

What this shows is that after the shutdown CC, we shut down static components, including nsNet, which destroys the RedirectChannelRegistrar, which holds alive an HttpBaseChannel, which holds alive a ParentChannelListener, which holds alive our BC.

Then there's another release when we do the special shutdown GC when we are shutting down XPConnect. I think this is from the BC's reflector. This special shutdown GC stops rooting JS objects, which is how it still ends up getting destroyed. (I wonder how many leaks this is papering over...)

That leaves the BC at a refcount of 2, which matches the two remaining cycles with a ChildSHistory and a BrowsingContextWebProgress. We already ran the last CC, so we leak.

The most obvious way to fix this would be to shut down some of this networking stuff earlier, but I don't know if that is papering over some other issue or what.

Comment 50

[Andrew McCreight [:mccr8]]

Kershaw, could this kind of "leak until shutdown" of a channel via RedirectChannelRegistrar be a sign of some kind of issue, or could I just change it so that we clear out the registrar before the shutdown CC instead of after it? This is showing up with the http3 version of the Mochitests, but I don't know if this is due to the very limited set of tests we are running from this directory or if it could be due to some actual browser issue. thanks.

Comment 51

[Kershaw Chang [:kershaw]]

(In reply to Andrew McCreight [:mccr8] from comment #50)

Kershaw, could this kind of "leak until shutdown" of a channel via RedirectChannelRegistrar be a sign of some kind of issue, or could I just change it so that we clear out the registrar before the shutdown CC instead of after it? This is showing up with the http3 version of the Mochitests, but I don't know if this is due to the very limited set of tests we are running from this directory or if it could be due to some actual browser issue. thanks.

Yes, I see no reason that we can't clear RedirectChannelRegistrar earlier. Maybe we can clear it when receiving profile-change-net-teardown.
I also don't think this has something to do with Http/3 tests. Maybe it's the timing change that makes this leak happens more often.

Comment 52

[Frederik Braun [:freddy]]

Thank you so much for looking more deeply, mccr8.
Next step appears to be looking into Networking shutdown procedures, then?

Comment 53

[Andrew McCreight [:mccr8]]

I have a patch to clear out the two registrars earlier. It seems like it fixes the leak. I'll put it up for review when I get a full clean try run. I just made them get cleared at XPCOMShutdownFinal via ClearOnShutdown as that seemed like the small change.

Comment 54

[Andrew McCreight [:mccr8]]

Attachment: Bug 1760018 - Clean up networking registrars earlier to avoid leaks.

These registrars can hold channels alive, which can hold listeners alive,
which can hold cycle collected things alive. By clearing the registrars
before the final CC instead of after the final CC, we can avoid spurious
leaks.

It would make more logical sense to do this earlier, at net teardown,
but I've made the minimal change to try to avoid stirring up weird
shutdown issues.

Comment 55

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/b012b9792225
Clean up networking registrars earlier to avoid leaks. r=necko-reviewers,kershaw

Comment 56

[Cristian Tuns]

https://hg.mozilla.org/mozilla-central/rev/b012b9792225

Comment 57

[Intermittent Failures Robot]

25 failures in 3411 pushes (0.007 failures/push) were associated with this bug in the last 7 days.

This is the #40 most frequent failure this week.

Repository breakdown:

• mozilla-central: 4
• autoland: 16
• mozilla-beta: 3
• try: 2

Platform and build breakdown:

• linux1804-64-qr: 25
  • debug: 25

For more details, see:
https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1760018&startday=2023-05-01&endday=2023-05-07&tree=all

Comment 58

[Andrew McCreight [:mccr8]]

This does appear to have actually gone away.

If a similar leak appears later, please file a new bug for it.