Bug: Intermittent browser/base/content/test/tabs/browser_multiselect_tabs_play.js | leaked 2 window(s) until shutdown [url = about:blank]
Status: RESOLVED
Priority: P5
Resolution: INCOMPLETE
Created: 2021-10-28 05:29:40+00:00
Resolved: 2023-06-02 12:01:27+00:00

**Filed by:** ccozmuta [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=356295812&repo=mozilla-central
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/YSC5VTOORHC-RMJD1Qmt4g/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2021-10-28T04:21:47.607Z] 04:21:47     INFO - TEST-START | Shutdown
[task 2021-10-28T04:21:47.607Z] 04:21:47     INFO - Browser Chrome Test Summary
[task 2021-10-28T04:21:47.608Z] 04:21:47     INFO - Passed:  2780
[task 2021-10-28T04:21:47.608Z] 04:21:47     INFO - Failed:  0
[task 2021-10-28T04:21:47.609Z] 04:21:47     INFO - Todo:    1
[task 2021-10-28T04:21:47.609Z] 04:21:47     INFO - Mode:    e10s
[task 2021-10-28T04:21:47.610Z] 04:21:47     INFO - *** End BrowserChrome Test Results ***
[task 2021-10-28T04:21:47.670Z] 04:21:47     INFO - GECKO(3616) | [Child 6444, Main Thread] WARNING: '!CanSend() || !mManager || !mManager->CanSend()', file /builds/worker/checkouts/gecko/dom/ipc/jsactor/JSWindowActorChild.cpp:44
[task 2021-10-28T04:21:47.672Z] 04:21:47     INFO - GECKO(3616) | [Child 6444, Main Thread] WARNING: '!CanSend() || !mManager || !mManager->CanSend()', file /builds/worker/checkouts/gecko/dom/ipc/jsactor/JSWindowActorChild.cpp:44
[task 2021-10-28T04:21:47.674Z] 04:21:47     INFO - GECKO(3616) | [Child 6444, Main Thread] WARNING: '!CanSend() || !mManager || !mManager->CanSend()', file /builds/worker/checkouts/gecko/dom/ipc/jsactor/JSWindowActorChild.cpp:44
[task 2021-10-28T04:21:47.679Z] 04:21:47     INFO - GECKO(3616) | [Child 6444, Main Thread] WARNING: '!CanSend() || !mManager || !mManager->CanSend()', file /builds/worker/checkouts/gecko/dom/ipc/jsactor/JSWindowActorChild.cpp:44
[task 2021-10-28T04:21:47.688Z] 04:21:47     INFO - GECKO(3616) | [Child 6444, Main Thread] WARNING: '!CanSend() || !mManager || !mManager->CanSend()', file /builds/worker/checkouts/gecko/dom/ipc/jsactor/JSWindowActorChild.cpp:44
[task 2021-10-28T04:21:47.688Z] 04:21:47     INFO - GECKO(3616) | [Child 6444, Main Thread] WARNING: '!CanSend() || !mManager || !mManager->CanSend()', file /builds/worker/checkouts/gecko/dom/ipc/jsactor/JSWindowActorChild.cpp:44
[task 2021-10-28T04:21:47.700Z] 04:21:47     INFO - GECKO(3616) | [Child 6444, Main Thread] WARNING: '!CanSend() || !mManager || !mManager->CanSend()', file /builds/worker/checkouts/gecko/dom/ipc/jsactor/JSWindowActorChild.cpp:44
[task 2021-10-28T04:21:47.712Z] 04:21:47     INFO - GECKO(3616) | [Parent 6960: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 1bb65562000 == 4 [pid = 6960] [id = 2] [url = chrome://extensions/content/dummy.xhtml]
[task 2021-10-28T04:21:47.788Z] 04:21:47     INFO - GECKO(3616) | 1635394907791	Marionette	TRACE	Received observer notification quit-application
[task 2021-10-28T04:21:47.792Z] 04:21:47     INFO - GECKO(3616) | 1635394907791	Marionette	INFO	Stopped listening on port 2828
[task 2021-10-28T04:21:47.792Z] 04:21:47     INFO - GECKO(3616) | 1635394907792	Marionette	DEBUG	Marionette stopped listening
<...>
[task 2021-10-28T04:21:49.780Z] 04:21:49     INFO - GECKO(3616) | [Parent 6960, Main Thread] WARNING: NS_ENSURE_TRUE(Preferences::InitStaticMembers()) failed: file /builds/worker/checkouts/gecko/modules/libpref/Preferences.cpp:4439
[task 2021-10-28T04:21:49.840Z] 04:21:49     INFO - TEST-INFO | Main app process: exit 0
[task 2021-10-28T04:21:49.841Z] 04:21:49     INFO - TEST-INFO | Confirming we saw 831 DOCSHELL created and 831 destroyed log strings.
[task 2021-10-28T04:21:49.841Z] 04:21:49     INFO - TEST-INFO | Confirming we saw 2350 DOMWINDOW created and 2350 destroyed log strings.
[task 2021-10-28T04:21:49.842Z] 04:21:49    ERROR - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabs/browser_multiselect_tabs_play.js | leaked 2 window(s) until shutdown [url = about:blank]
[task 2021-10-28T04:21:49.842Z] 04:21:49     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_play.js | windows(s) leaked: [pid = 4024] [serial = 64], [pid = 4024] [serial = 65]
[task 2021-10-28T04:21:49.843Z] 04:21:49     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_play.js | This test created 1 hidden window(s)
[task 2021-10-28T04:21:49.843Z] 04:21:49     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_play.js | This test created 1 hidden docshell(s)
[task 2021-10-28T04:21:49.844Z] 04:21:49    ERROR - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabs/browser_multiselect_tabs_reorder.js | leaked 1 docShell(s) until shutdown
[task 2021-10-28T04:21:49.844Z] 04:21:49     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_reorder.js | docShell(s) leaked: [pid = 4024] [id = 25]
[task 2021-10-28T04:21:49.845Z] 04:21:49     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_reorder.js | This test created 1 hidden window(s)
[task 2021-10-28T04:21:49.845Z] 04:21:49     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_reorder.js | This test created 1 hidden docshell(s)
[task 2021-10-28T04:21:49.846Z] 04:21:49     INFO - TEST-INFO | browser/base/content/test/tabs/browser_accessibility_indicator.js | This test created 1 hidden window(s)
[task 2021-10-28T04:21:49.846Z] 04:21:49     INFO - TEST-INFO | browser/base/content/test/tabs/browser_accessibility_indicator.js | This test created 1 hidden docshell(s)
<...>
[task 2021-10-28T04:21:50.073Z] 04:21:50     INFO - TEST-INFO | leakcheck | tab process: leak threshold set at 1000 bytes
[task 2021-10-28T04:21:50.073Z] 04:21:50     INFO - TEST-INFO | leakcheck | vr process: leak threshold set at 0 bytes
[task 2021-10-28T04:21:50.074Z] 04:21:50     INFO - leakcheck | Processing leak log file C:\Users\task_163539242952489\AppData\Local\Temp\tmpuk6usa3v.mozrunner\runtests_leaks.log
[task 2021-10-28T04:21:50.074Z] 04:21:50     INFO - 
[task 2021-10-28T04:21:50.075Z] 04:21:50     INFO - == BloatView: ALL (cumulative) LEAK AND BLOAT STATISTICS, default process 6960
[task 2021-10-28T04:21:50.075Z] 04:21:50     INFO - 
[task 2021-10-28T04:21:50.075Z] 04:21:50     INFO -      |<----------------Class--------------->|<-----Bytes------>|<----Objects---->|
[task 2021-10-28T04:21:50.076Z] 04:21:50     INFO -      |                                      | Per-Inst   Leaked|   Total      Rem|
[task 2021-10-28T04:21:50.076Z] 04:21:50     INFO -    0 |TOTAL                                 |       63        0|91348646        0|
[task 2021-10-28T04:21:50.079Z] 04:21:50     INFO - 
[task 2021-10-28T04:21:50.079Z] 04:21:50     INFO - nsTraceRefcnt::DumpStatistics: 2374 entries
[task 2021-10-28T04:21:50.080Z] 04:21:50     INFO - TEST-PASS | leakcheck | default no leaks detected!
```