[Webkit-unassigned] [Bug 156409] New: [WK1] Wheel event callback removing the window causes crash in WebCore

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Fri Apr 8 11:17:03 PDT 2016


https://bugs.webkit.org/show_bug.cgi?id=156409

            Bug ID: 156409
           Summary: [WK1] Wheel event callback removing the window causes
                    crash in WebCore
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Event Handling
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: bfulgham at webkit.org

This is a follow-up to Bug 150871, which dealt with this problem in a WK2 context.

If a window is removed while it is triggering a wheel event, it will crash with a bad memory access, because WebKit will attempt to use the destroyed view. While we corrected the WK2 version of this problem, WK1 takes a slightly different code path that needs to be fixed.

The crash is shown by fast/events/wheel-event-destroys-frame.html.

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