1428280 - Intermittent application crashed [@ FullscreenTransitionTask::Observer::AddRef] Assertion failure: int32_t(mRefCnt) >= 0 (illegal refcnt), at nsGlobalWindowOuter.cpp:4196

Status: RESOLVED INCOMPLETE

(Core :: Layout, defect, P5)

Description

[Treeherder Bug Filer]

Filed by: ncsoregi [at] mozilla.com

https://treeherder.mozilla.org/logviewer.html#?job_id=154278336&repo=mozilla-inbound

https://queue.taskcluster.net/v1/task/DeNNgQdzRieznnHqCgMi3Q/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/DeNNgQdzRieznnHqCgMi3Q/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

[task 2018-01-05T02:55:16.068Z] 02:55:16     INFO - REFTEST INFO | Saved app info as /builds/worker/workspace/build/blobber_upload_dir/1f18a9fd-030a-b10c-3518-205c7d16336e.extra
11874
[task 2018-01-05T02:55:16.108Z] 02:55:16     INFO - REFTEST PROCESS-CRASH | file:///builds/worker/workspace/build/tests/reftest/tests/layout/reftests/margin-collapsing/block-negative-4b-dyn2.html | application crashed [@ FullscreenTransitionTask::Observer::AddRef]
11875
[task 2018-01-05T02:55:16.108Z] 02:55:16     INFO - Crash dump filename: /tmp/tmpTFBQON.mozrunner/minidumps/1f18a9fd-030a-b10c-3518-205c7d16336e.dmp
11876
[task 2018-01-05T02:55:16.109Z] 02:55:16     INFO - Operating system: Linux

Comment 1

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

This also shows up as failures in dom/url/ as timeouts: https://treeherder.mozilla.org/#/jobs?repo=mozilla-inbound&filter-resultStatus=testfailed&filter-resultStatus=busted&filter-resultStatus=exception&filter-resultStatus=pending&filter-resultStatus=running&filter-resultStatus=success&filter-searchStr=Linux%20x64%20debug%20Mochitests%20executed%20by%20TaskCluster%20with%20e10s%20test-linux64%2Fdebug-mochitest-plain-headless-e10s-10%20tc-M-e10s%28h10%29&fromchange=eaf8243e6e3346ea7bbb4305aee4d44da0d0c8e3&group_state=expanded&tochange=2a21215c2f64ac640f5cd4aee719e8d9aa5836e7&selectedJob=154326557

The log https://treeherder.mozilla.org/logviewer.html#?job_id=154326523&repo=mozilla-inbound&lineNumber=6048 contains
> Hit MOZ_CRASH(FullscreenTransitionTask::Observer not thread-safe) at /builds/worker/workspace/build/src/xpcom/base/nsISupportsImpl.cpp:46
a few lines up from the timeout.

Comment 3

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

First push with failures: https://treeherder.mozilla.org/#/jobs?repo=mozilla-inbound&filter-resultStatus=testfailed&filter-resultStatus=busted&filter-resultStatus=exception&filter-resultStatus=pending&filter-resultStatus=running&filter-resultStatus=success&filter-searchStr=Linux%20x64%20debug%20Mochitests%20executed%20by%20TaskCluster%20with%20e10s%20test-linux64%2Fdebug-mochitest-plain-headless-e10s-10%20tc-M-e10s%28h10%29&fromchange=eaf8243e6e3346ea7bbb4305aee4d44da0d0c8e3&group_state=expanded&tochange=2a21215c2f64ac640f5cd4aee719e8d9aa5836e7&selectedJob=154326557
But that patch doesn't change behavior on trunk.
Maybe bug 1347731?

Comment 4

[Intermittent Failures Robot]

5 failures in 462 pushes (0.011 failures/push) were associated with this bug in the last 7 days.    

Repository breakdown:
* mozilla-inbound: 5

Platform breakdown:
* linux64: 5

For more details, see:
https://brasstacks.mozilla.com/orangefactor/?display=Bug&bugid=1428280&startday=2018-01-01&endday=2018-01-07&tree=all

Comment 5

[Firefox Bug Husbandry Bot]

https://wiki.mozilla.org/Bug_Triage#Intermittent_Test_Failure_Cleanup