Closed Bug 1567104 Opened 5 years ago Closed 5 years ago

Intermittent css-grid/grid-fragmentation-002.html == css-grid/grid-fragmentation-002-ref.html | image comparison, max difference: 255, number of differing pixels: 39415

Categories

(Core :: Graphics: WebRender, defect, P5)

Product:
Core
Component:
Graphics: WebRender
Type:
defect

Tracking

()

Status:
RESOLVED INCOMPLETE

People

(Reporter: intermittent-bug-filer, Unassigned)

Details

(Keywords: intermittent-failure, regression, Whiteboard: [test isolation])

Filed by: malexandru [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer.html#?job_id=257114713&repo=autoland
Full log: https://queue.taskcluster.net/v1/task/IE8Tt2L5SX6uk4u6wLbB6w/runs/0/artifacts/public/logs/live_backing.log
Reftest URL: https://hg.mozilla.org/mozilla-central/raw-file/tip/layout/tools/reftest/reftest-analyzer.xhtml#logurl=https://queue.taskcluster.net/v1/task/IE8Tt2L5SX6uk4u6wLbB6w/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

[task 2019-07-18T08:44:07.066Z] 08:44:07 INFO - REFTEST TEST-START | file:///builds/worker/workspace/build/tests/reftest/tests/layout/reftests/css-grid/grid-fragmentation-002.html == file:///builds/worker/workspace/build/tests/reftest/tests/layout/reftests/css-grid/grid-fragmentation-002-ref.html
[task 2019-07-18T08:44:07.068Z] 08:44:07 INFO - REFTEST TEST-LOAD | file:///builds/worker/workspace/build/tests/reftest/tests/layout/reftests/css-grid/grid-fragmentation-002.html | 187 / 280 (66%)
[task 2019-07-18T08:44:07.190Z] 08:44:07 INFO - REFTEST TEST-LOAD | file:///builds/worker/workspace/build/tests/reftest/tests/layout/reftests/css-grid/grid-fragmentation-002-ref.html | 187 / 280 (66%)
[task 2019-07-18T08:44:07.503Z] 08:44:07 INFO - REFTEST TEST-UNEXPECTED-FAIL | file:///builds/worker/workspace/build/tests/reftest/tests/layout/reftests/css-grid/grid-fragmentation-002.html == file:///builds/worker/workspace/build/tests/reftest/tests/layout/reftests/css-grid/grid-fragmentation-002-ref.html | image comparison, max difference: 255, number of differing pixels: 39415
[task 2019-07-18T08:44:07.505Z] 08:44:07 INFO - REFTEST IMAGE 1 (TEST):
[task 2019-07-18T08:44:07.506Z] 08:44:07 INFO - REFTEST IMAGE 2 (REFERENCE):
[task 2019-07-18T08:44:07.514Z] 08:44:07 INFO - REFTEST INFO | Saved log: START file:///builds/worker/workspace/build/tests/reftest/tests/layout/reftests/css-grid/grid-fragmentation-002.html
[task 2019-07-18T08:44:07.516Z] 08:44:07 INFO - REFTEST INFO | Saved log: [CONTENT] OnDocumentLoad triggering AfterOnLoadScripts
[task 2019-07-18T08:44:07.517Z] 08:44:07 INFO - REFTEST INFO | Saved log: Initializing canvas snapshot
[task 2019-07-18T08:44:07.519Z] 08:44:07 INFO - REFTEST INFO | Saved log: DoDrawWindow 0,0,800,1000
[task 2019-07-18T08:44:07.521Z] 08:44:07 INFO - REFTEST INFO | Saved log: [CONTENT] RecordResult fired
[task 2019-07-18T08:44:07.523Z] 08:44:07 INFO - REFTEST INFO | Saved log: RecordResult fired
[task 2019-07-18T08:44:07.528Z] 08:44:07 INFO - REFTEST INFO | Saved log: START file:///builds/worker/workspace/build/tests/reftest/tests/layout/reftests/css-grid/grid-fragmentation-002-ref.html
[task 2019-07-18T08:44:07.529Z] 08:44:07 INFO - REFTEST INFO | Saved log: [CONTENT] OnDocumentLoad triggering AfterOnLoadScripts
[task 2019-07-18T08:44:07.531Z] 08:44:07 INFO - REFTEST INFO | Saved log: Initializing canvas snapshot
[task 2019-07-18T08:44:07.532Z] 08:44:07 INFO - REFTEST INFO | Saved log: DoDrawWindow 0,0,800,1000
[task 2019-07-18T08:44:07.534Z] 08:44:07 INFO - REFTEST INFO | Saved log: [CONTENT] RecordResult fired
[task 2019-07-18T08:44:07.536Z] 08:44:07 INFO - REFTEST INFO | Saved log: RecordResult fired
[task 2019-07-18T08:44:07.537Z] 08:44:07 INFO - REFTEST TEST-END | file:///builds/worker/workspace/build/tests/reftest/tests/layout/reftests/css-grid/grid-fragmentation-002.html == file:///builds/worker/workspace/build/tests/reftest/tests/layout/reftests/css-grid/grid-fragmentation-002-ref.html
[task 2019-07-18T08:44:07.538Z] 08:44:07 INFO - REFTEST TEST-START | file:///builds/worker/workspace/build/tests/reftest/tests/layout/reftests/css-grid/grid-fragmentation-003.html == file:///builds/worker/workspace/build/tests/reftest/tests/layout/reftests/css-grid/grid-fragmentation-003-ref.html

The failure here is that a bunch of dotted borders simply didn't paint.

Given that this is (so far) only observed on WebRender, and it was a painting problem, I'm betting this is a bug in WebRender code rather than a bug in Layout code. --> Reclassifying.

Component: Layout → Graphics: WebRender
Whiteboard: [test isolation]

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

Status: NEW → RESOLVED
Closed: 5 years ago
Resolution: --- → INCOMPLETE
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