[Webkit-unassigned] [Bug 195502] New: The event dispatcher thread reads ScrollingTree's m_rootNode without locking

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=195502

            Bug ID: 195502
           Summary: The event dispatcher thread reads ScrollingTree's
                    m_rootNode without locking
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Scrolling
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: simon.fraser at apple.com

ScrollingTree::shouldHandleWheelEventSynchronously() which runs on the event dispatcher thread consults m_rootNode, but no locking prevents this being modified by the scrolling thread at the same time.

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