1346734 - stylo: Intermittent leakcheck | default process: 16 bytes leaked (nsStringBuffer)

Status: RESOLVED FIXED

(Core :: CSS Parsing and Computation, defect, P1)

Description

[Treeherder Bug Filer]

Filed by: cbook [at] mozilla.com

https://treeherder.mozilla.org/logviewer.html#?job_id=83346271&repo=autoland

https://queue.taskcluster.net/v1/task/ZXXFVG2USGeyOT_fZlp51g/runs/0/artifacts/public/logs/live_backing.log

https://hg.mozilla.org/mozilla-central/raw-file/tip/layout/tools/reftest/reftest-analyzer.xhtml#logurl=https://queue.taskcluster.net/v1/task/ZXXFVG2USGeyOT_fZlp51g/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

Comment 1

[Carsten Book [:Tomcat]]

bobby: this seems a new intermittent leak in stylo tests, could you take a look, thanks!

Comment 2

[Bobby Holley (:bholley)]

Looks like this started with the landing of bug 1315601. Seems to be happening about 80% of the time so we should jump on this quickly.

Over to xidorn.

Comment 3

[Xidorn Quan [:xidorn] UTC+11]

The earliest push with this leak is from bug 1341690: https://treeherder.mozilla.org/#/jobs?repo=autoland&revision=8949490f91a7c560485e1d5a350718924b4cb9a2&selectedJob=83324109

The URL change seems to be a more sensible candidate since bug 1315601 doesn't have much work on string stuff.

I assume heycam would know more.

Comment 4

[Xidorn Quan [:xidorn] UTC+11]

FWIW, according to my local run last night, it seems to me the leak happens inside one of layout/reftests/{dom,generated-content}. I saw them intermittently, but failed to further locate where the issue is.

Comment 5

[Emilio Cobos Álvarez (:emilio)]

Also, this bug can be from bug 1296477, which makes more sense with the generated-content bits. manish?

Comment 6

[Xidorn Quan [:xidorn] UTC+11]

Yeah, that is possible as well, since the task crashes before bug 1341690's push.

Comment 7

[Intermittent Failures Robot]

59 failures in 142 pushes (0.415 failures/push) were associated with this bug yesterday.   

Repository breakdown:
* autoland: 51
* mozilla-central: 5
* mozilla-inbound: 3

Platform breakdown:
* linux64-stylo: 58
* osx-10-10: 1

For more details, see:
https://brasstacks.mozilla.com/orangefactor/?display=Bug&bugid=1346734&startday=2017-03-13&endday=2017-03-13&tree=all

Comment 8

[Xidorn Quan [:xidorn] UTC+11]

It is layout/reftests/dom/xbl-children-3.xhtml leaking.

I'm going to disable this test in this bug, and file a new bug investigating the reason.

Comment 9

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/ce635599e0c1
Disable the leaking reftest.

Comment 10

[Xidorn Quan [:xidorn] UTC+11]

Filed bug 1347065.

Comment 11

[Joel Maher ( :jmaher ) (UTC -8)]

thanks for disabling this test

Comment 12

[Carsten Book [:Tomcat]]

https://hg.mozilla.org/mozilla-central/rev/ce635599e0c1

Comment 13

[Intermittent Failures Robot]

33 failures in 149 pushes (0.221 failures/push) were associated with this bug yesterday.   

Repository breakdown:
* mozilla-inbound: 16
* autoland: 16
* try: 1

Platform breakdown:
* linux64-stylo: 33

For more details, see:
https://brasstacks.mozilla.com/orangefactor/?display=Bug&bugid=1346734&startday=2017-03-14&endday=2017-03-14&tree=all

Comment 14

[Intermittent Failures Robot]

98 failures in 777 pushes (0.126 failures/push) were associated with this bug in the last 7 days. 

This is the #13 most frequent failure this week. 

** This failure happened more than 75 times this week! Resolving this bug is a very high priority. **

** Try to resolve this bug as soon as possible. If unresolved for 1 week, the affected test(s) may be disabled. **  

Repository breakdown:
* autoland: 68
* mozilla-inbound: 23
* mozilla-central: 6
* try: 1

Platform breakdown:
* linux64-stylo: 97
* osx-10-10: 1

For more details, see:
https://brasstacks.mozilla.com/orangefactor/?display=Bug&bugid=1346734&startday=2017-03-13&endday=2017-03-19&tree=all