[Webkit-unassigned] [Bug 215767] New: [ macOS wk1 Debug ] inspector/animation/nameChanged.html is a flaky crash

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=215767

            Bug ID: 215767
           Summary: [ macOS wk1 Debug ]
                    inspector/animation/nameChanged.html is a flaky crash
           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: hector_i_lopez at apple.com

inspector/animation/nameChanged.html

Test is a flaky crash according to history on macOS wk1 Debug. The first occurrence can be seen at the limit of current history at r262620 but there is no indication that revision is the cause.

History:
https://results.webkit.org/?suite=layout-tests&test=inspector%2Fanimation%2FnameChanged.html&platform=mac&flavor=wk1&limit=50000

Crash log:
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   com.apple.JavaScriptCore            0x000000010553e46e WTFCrash + 14 (Assertions.cpp:295)
1   com.apple.WebCore                   0x000000012031684b WTFCrashWithInfo(int, char const*, char const*, int) + 27
2   com.apple.WebCore                   0x00000001230f1ef9 WTF::HashTableConstIterator<WebCore::WebAnimation*, WebCore::WebAnimation*, WTF::IdentityExtractor, WTF::DefaultHash<WebCore::WebAnimation*>, WTF::HashTraits<WebCore::WebAnimation*>, WTF::HashTraits<WebCore::WebAnimation*> >::checkValidity() const + 105 (HashTable.h:217)
3   com.apple.WebCore                   0x00000001230f1e0c WTF::HashTableConstIterator<WebCore::WebAnimation*, WebCore::WebAnimation*, WTF::IdentityExtractor, WTF::DefaultHash<WebCore::WebAnimation*>, WTF::HashTraits<WebCore::WebAnimation*>, WTF::HashTraits<WebCore::WebAnimation*> >::operator++() + 28
4   com.apple.WebCore                   0x0000000123070566 WTF::HashTableConstIteratorAdapter<WTF::HashTable<WebCore::WebAnimation*, WebCore::WebAnimation*, WTF::IdentityExtractor, WTF::DefaultHash<WebCore::WebAnimation*>, WTF::HashTraits<WebCore::WebAnimation*>, WTF::HashTraits<WebCore::WebAnimation*> >, WebCore::WebAnimation*>::operator++() + 38 (HashTable.h:1571)
5   com.apple.WebCore                   0x0000000123a1e526 WebCore::InspectorAnimationAgent::enable(WTF::String&) + 358 (InspectorAnimationAgent.cpp:268)
6   com.apple.JavaScriptCore            0x0000000106823ec7 Inspector::AnimationBackendDispatcher::enable(long, WTF::RefPtr<WTF::JSONImpl::Object, WTF::DumbPtrTraits<WTF::JSONImpl::Object> >&&) + 103 (InspectorBackendDispatchers.cpp:140)
7   com.apple.JavaScriptCore            0x0000000106823d79 Inspector::AnimationBackendDispatcher::dispatch(long, WTF::String const&, WTF::Ref<WTF::JSONImpl::Object, WTF::DumbPtrTraits<WTF::JSONImpl::Object> >&&) + 905 (InspectorBackendDispatchers.cpp:125)

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