Intermittent TEST-UNEXPECTED-PASS | image-element/canvas-outside-document-invalidate-02.html == about:blank | image comparison, max difference: 0, number of differing pixels: 0

RESOLVED FIXED in Firefox 66

Status

()

defect
P3
normal
RESOLVED FIXED
6 months ago
4 months ago

People

(Reporter: intermittent-bug-filer, Assigned: kats)

Tracking

(Blocks 1 bug, {intermittent-failure})

unspecified
mozilla67
Points:
---
Dependency tree / graph

Firefox Tracking Flags

(firefox66 fixed, firefox67 fixed)

Details

(Whiteboard: [stockwell unknown])

Attachments

(1 attachment)

Reporter

Description

6 months ago
treeherder
Filed by: ebalazs [at] mozilla.com

https://treeherder.mozilla.org/logviewer.html#?job_id=217616152&repo=mozilla-inbound

https://queue.taskcluster.net/v1/task/D2C6HrAuQNGb7dT2_RxY8Q/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/D2C6HrAuQNGb7dT2_RxY8Q/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

TEST-START | file:///Z:/task_1545117005/build/tests/reftest/tests/layout/reftests/image-element/canvas-outside-document-invalidate-02.html == about:blank
07:24:31     INFO - REFTEST TEST-LOAD | file:///Z:/task_1545117005/build/tests/reftest/tests/layout/reftests/image-element/canvas-outside-document-invalidate-02.html | 7 / 52 (13%)
07:24:31     INFO - REFTEST TEST-UNEXPECTED-PASS | file:///Z:/task_1545117005/build/tests/reftest/tests/layout/reftests/image-element/canvas-outside-document-invalidate-02.html == about:blank | image comparison, max difference: 0, number of differing pixels: 0
07:24:31     INFO - REFTEST   IMAGE: 
07:24:31     INFO - REFTEST INFO | Saved log: START file:///Z:/task_1545117005/build/tests/reftest/tests/layout/reftests/image-element/canvas-outside-document-invalidate-02.html
07:24:31     INFO - REFTEST INFO | Saved log: [CONTENT] OnDocumentLoad triggering WaitForTestEnd
07:24:31     INFO - REFTEST INFO | Saved log: [CONTENT] WaitForTestEnd: Adding listeners
07:24:31     INFO - REFTEST INFO | Saved log: Initializing canvas snapshot
07:24:31     INFO - REFTEST INFO | Saved log: DoDrawWindow 0,0,800,1000
Comment hidden (Intermittent Failures Robot)
Comment hidden (Intermittent Failures Robot)
Comment hidden (Intermittent Failures Robot)
Component: Layout: Images, Video, and HTML Frames → Graphics: WebRender
Comment hidden (Intermittent Failures Robot)
Priority: -- → P3
Comment hidden (Intermittent Failures Robot)
Comment hidden (Intermittent Failures Robot)
Comment hidden (Intermittent Failures Robot)

So this is interesting. This is intermittently doing an UNEXPECTED-PASS but on other runs it's a regular TEST-PASS. It looks like sometimes the azureSkia condition is true, so the fails-if(azureSkia) clause takes effect, harness expects a fail, but the test passes, producing the UNEXPECTED-PASS. Other times the azureSkia condition is false, so the harness expects a pass, which is what it gets. See for example the logs from these jobs: https://treeherder.mozilla.org/#/jobs?repo=autoland&searchStr=windows%2C10%2Cx64%2Cquantumrender%2Copt%2Creftests%2Cwith%2Ce10s%2Ctest-windows10-64-qr%2Fopt-reftest-e10s-1%2Cr-e10s%28r1%29&tochange=9865a7358969d86d1b657ba2b9890e4ea5189f11&fromchange=c5974fba1238f897b45bed5ac4b2f99035c53274 - the first one has azureSkia true and the next two have azureSkia false.

Who knows about what canvas backend gets picked and why it might intermittently be skia?

Assignee: nobody → kats
Flags: needinfo?(jmuizelaar)
Assignee: kats → nobody

I don't know why that would be. Maybe Lee does?

Flags: needinfo?(jmuizelaar) → needinfo?(lsalzman)

My initial guess would be something like ANGLE initialization failing, leading us to this: https://searchfox.org/mozilla-central/source/gfx/thebes/gfxWindowsPlatform.cpp#615

Flags: needinfo?(lsalzman)
Comment hidden (Intermittent Failures Robot)
Comment hidden (Intermittent Failures Robot)
Comment hidden (Intermittent Failures Robot)

I don't know if it's worth investigating further. The fallback codepath Lee pointed to in comment 10 looks "legit" in that it's probably something that can happen in production. So maybe I'll just update the annotation to expect passes in either case.

Assignee: nobody → kats

Apparently we sometimes fall back to skia canvas with WebRender if ANGLE
fails to initialize. This makes the azureSkia condition true, but the
test still passes because of WebRender's magical properties. This patch
updates the annotation to reflect reality, so we don't get unexpected
passes.

Comment 16

4 months ago
Pushed by kgupta@mozilla.com:
https://hg.mozilla.org/integration/autoland/rev/fe756391d9f9
Update annotation for webrender. r=lsalzman

Comment 17

4 months ago
Backout by csabou@mozilla.com:
https://hg.mozilla.org/integration/autoland/rev/58727c80f9c7
Backed out changeset fe756391d9f9 for linux qr debug reftest failures on canvas-outside-document-invalidate-02.html. CLOSED TREE
Flags: needinfo?(kats)

Comment 19

4 months ago
Pushed by kgupta@mozilla.com:
https://hg.mozilla.org/integration/autoland/rev/d286d62dbcb0
Update annotation for webrender. r=lsalzman

Comment 20

4 months ago
bugherder
Status: NEW → RESOLVED
Closed: 4 months ago
Resolution: --- → FIXED
Target Milestone: --- → mozilla67
Comment hidden (Intermittent Failures Robot)

New failure in beta: https://treeherder.mozilla.org/#/jobs?repo=mozilla-beta&resultStatus=testfailed%2Cbusted%2Cexception&classifiedState=unclassified&selectedJob=232613194

Log: https://treeherder.mozilla.org/logviewer.html#/jobs?job_id=232613194&repo=mozilla-beta&lineNumber=33171

09:49:08 INFO - ++DOMWINDOW == 23 (0000020098F83000) [pid = 3876] [serial = 23] [outer = 000002009AC75400]
09:49:08 INFO - [Child 3876, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80004005: file z:/build/build/src/dom/base/nsContentUtils.cpp, line 3770
09:49:09 INFO - REFTEST TEST-PASS | file:///Z:/task_1552036614/build/tests/reftest/tests/layout/reftests/image-element/canvas-outside-document-invalidate-01.html == about:blank | image comparison, max difference: 0, number of differing pixels: 0
09:49:09 INFO - REFTEST TEST-END | file:///Z:/task_1552036614/build/tests/reftest/tests/layout/reftests/image-element/canvas-outside-document-invalidate-01.html == about:blank
09:49:09 INFO - ++DOMWINDOW == 24 (00000200A1661800) [pid = 3876] [serial = 24] [outer = 000002009AC75400]
09:49:09 INFO - REFTEST TEST-START | file:///Z:/task_1552036614/build/tests/reftest/tests/layout/reftests/image-element/canvas-outside-document-invalidate-02.html == about:blank
09:49:09 INFO - REFTEST TEST-LOAD | file:///Z:/task_1552036614/build/tests/reftest/tests/layout/reftests/image-element/canvas-outside-document-invalidate-02.html | 7 / 52 (13%)
09:49:09 INFO - ++DOMWINDOW == 25 (00000200A1988800) [pid = 3876] [serial = 25] [outer = 000002009AC75400]
09:49:09 INFO - [Child 3876, Main Thread] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80004005: file z:/build/build/src/dom/base/nsContentUtils.cpp, line 3770
09:49:09 INFO - REFTEST TEST-UNEXPECTED-PASS | file:///Z:/task_1552036614/build/tests/reftest/tests/layout/reftests/image-element/canvas-outside-document-invalidate-02.html == about:blank | image comparison, max difference: 0, number of differing pixels: 0
09:49:09 INFO - REFTEST IMAGE: data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAPoCAYAAAAmy5qxAAAUnElEQVR4nO3XMQEAMAyAsPo3vbpgRxMFvMwDAACIzO8AAADgDgMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDA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09:49:09 INFO - REFTEST INFO | Saved log: START file:///Z:/task_1552036614/build/tests/reftest/tests/layout/reftests/image-element/canvas-outside-document-invalidate-02.html
09:49:09 INFO - REFTEST INFO | Saved log: [CONTENT] OnDocumentLoad triggering WaitForTestEnd
09:49:09 INFO - REFTEST INFO | Saved log: [CONTENT] WaitForTestEnd: Adding listeners

Status: RESOLVED → REOPENED
Resolution: FIXED → ---

Please don't reopen bugs just because the patch hasn't been uplifted to all branches. This bug is still fixed on central, so should remain fixed. Instead you can set the status-firefox66 flag to affected to indicate that it still happens on beta and that the fix needs uplifting.

Status: REOPENED → RESOLVED
Closed: 4 months ago4 months ago
Flags: needinfo?(shindli)
Resolution: --- → FIXED

Got it. Thanks for the heads up.

Flags: needinfo?(shindli)
Comment hidden (Intermittent Failures Robot)
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