[Webkit-unassigned] [Bug 143517] New: WebCore IconDatabase retain counts can get unbalanced when WebContent process terminates

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=143517

            Bug ID: 143517
           Summary: WebCore IconDatabase retain counts can get unbalanced
                    when WebContent process terminates
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Macintosh
                OS: Mac OS X 10.10
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: gordon_sheridan at apple.com

The WebCore IconDatabase lives in the UI process. The WebContent process sends RetainIconForPageURL/ReleaseIconForPageURL messages to the UI process via WebIconDatabaseProxy. When a page is closed, its associated HistoryItems are released, which in turn queue ReleaseIconForPageURL messages for their URLs. However, the process terminates before the messages are actually sent to the UI process, so the WebCore IconDatabase is not able to balance the retain counts.

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