[Webkit-unassigned] [Bug 176299] New: WebCore::DocumentLoader m_subresourceLoaders Infinite Loop

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=176299

            Bug ID: 176299
           Summary: WebCore::DocumentLoader m_subresourceLoaders  Infinite
                    Loop
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ak4868 at 163.com

Created attachment 319768

  --> https://bugs.webkit.org/attachment.cgi?id=319768&action=review

crash log

we find UIWebView sometimes hangs at main thread, when this happened webcore thread cpu useage goes to 100%.according to the crash log it seems that the webcore thread is doing an infinite loop, hence the main thread won't continue for it's waiting the end of the webcore thread.

Steps:
1. create UIViewController with UIWebview and load url like https://www.baidu.com 
2. pop that UIViewController then go to steps 1

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