[Webkit-unassigned] [Bug 173178] New: svg/animations/svglength-element-removed-crash.svg is flaky

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=173178

            Bug ID: 173178
           Summary: svg/animations/svglength-element-removed-crash.svg is
                    flaky
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jlewis3 at apple.com

svg/animations/svglength-element-removed-crash.svg is a flaky failure but is becoming more consistent in failing.

Dashboard shows the failures happening on iOS Simulator Release:
https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=svg%2Fanimations%2Fsvglength-element-removed-crash.svg

https://build.webkit.org/results/Apple%20iOS%2010%20Simulator%20Release%20WK2%20(Tests)/r217993%20(2116)/results.html
https://build.webkit.org/builders/Apple%20iOS%2010%20Simulator%20Release%20WK2%20(Tests)/builds/2085


I was able to reproduce the issue locally with:
run-webkit-tests svg/animations/svglength-element-removed-crash.svg --iterations=100 --no-retry-failure --ios-simulator

I was also able to narrow down the failure to Revision r217944 using same testing method
https://trac.webkit.org/changeset/217944/webkit

Diff:
--- /Volumes/Data/slave/ios-simulator-10-release-tests-wk2/build/layout-test-results/svg/animations/svglength-element-removed-crash-expected.txt
+++ /Volumes/Data/slave/ios-simulator-10-release-tests-wk2/build/layout-test-results/svg/animations/svglength-element-removed-crash-actual.txt
@@ -1 +1 @@
-PASS x = 10
+FAIL: -20 extra live node(s) x = 10

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