Bug 208889 - REGRESSION: [ Mac wk2 ] fast/images/decode-render-animated-image.html is flaky failing
Summary: REGRESSION: [ Mac wk2 ] fast/images/decode-render-animated-image.html is flak...
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: Images (show other bugs)
Version: WebKit Nightly Build
Hardware: Mac macOS 10.15
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2020-03-10 15:31 PDT by Jason Lawrence
Modified: 2020-03-11 10:28 PDT (History)
2 users (show)

See Also:


Attachments
decode-render-animated-image-diff (2.45 KB, image/png)
2020-03-10 15:31 PDT, Jason Lawrence
no flags Details

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Description Jason Lawrence 2020-03-10 15:31:54 PDT
Created attachment 393183 [details]
decode-render-animated-image-diff

fast/images/decode-render-animated-image.html

Description:
This test is flaky failing on Mac wk2. There appears to be a regression point at r257944.

History:
https://results.webkit.org/?suite=layout-tests&test=fast%2Fimages%2Fdecode-render-animated-image.html&platform=mac

Diff:
https://build.webkit.org/results/Apple%20Mojave%20Release%20WK2%20(Tests)/r258226%20(11064)/fast/images/decode-render-animated-image-diffs.html
Comment 1 Radar WebKit Bug Importer 2020-03-10 15:32:16 PDT
<rdar://problem/60294431>
Comment 2 Jason Lawrence 2020-03-10 15:39:27 PDT
I have marked this test as failing while this issue is investigated.
https://trac.webkit.org/changeset/258234/webkit
Comment 3 Alexey Proskuryakov 2020-03-10 20:35:30 PDT
This cannot be r257944, which didn't change any code. I see the first failure on internal bots with r257872, and one of the bots started to flaky time out with the first timeout on r257830. But this isn't frequent enough to positively blame.
Comment 4 Jason Lawrence 2020-03-11 09:48:01 PDT
This issue appears to have regressed at r258002. I can reproduce this issue with r258259 and r258002 using the command below, but cannot reproduce the issue with r258002 or r257998.

run-webkit-tests --iterations 1000 --exit-after-n-failures 3 --force -f —clobber-old-results fast/images/decode-render-animated-image.html

r258259:
[12/1000] fast/images/decode-render-animated-image.html failed unexpectedly (reference mismatch)
[78/1000] fast/images/decode-render-animated-image.html failed unexpectedly (reference mismatch)
998 tests ran as expected, 2 didn't:

r258002:
[47/1000] fast/images/decode-render-animated-image.html failed unexpectedly (reference mismatch)
999 tests ran as expected, 1 didn't:

r258001:
All 1000 tests ran as expected.

r257998:
All 1000 tests ran as expected.
Comment 5 Jason Lawrence 2020-03-11 10:07:11 PDT
It doesn't look like this commit could have caused the issue. I will keep testing.