[Webkit-unassigned] [Bug 120434] New: AX: WebProcess at com.apple.WebCore: WebCore::AXObjectCache::rootObject + 27

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=120434

           Summary: AX: WebProcess at com.apple.WebCore:
                    WebCore::AXObjectCache::rootObject + 27
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Accessibility
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: cfleizach at apple.com
                CC: webkit-bug-importer at group.apple.com


Crash

Crashed Thread:  0  Dispatch queue: com.apple.main-thread

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000

VM Regions Near 0:
--> 
    __TEXT                 0000000101aa8000-0000000101aa9000 [    4K] r-x/rwx SM=COW  /Applications/WebKit.app/Contents/Frameworks/10.8/WebKit2.framework/WebProcess.app/Contents/MacOS/WebProcess


* BACKTRACE ('>' indicates stack frame used for CrashTracer aggregation)

>  1 com.apple.WebCore              0x10c34f49b WebCore::AXObjectCache::rootObject() + 0x1b
   2 com.apple.WebKit2              0x10bbe1754 -[WKAccessibilityWebPageObject accessibilityRootObjectWrapper] + 0x70
   3 com.apple.WebKit2              0x10bbe1d46 -[WKAccessibilityWebPageObject accessibilityHitTest:] + 0x15c
   4 com.apple.AppKit               0x7fff96b80f46 CopyElementAtPosition + 0x23a
   5 com.apple.HIServices           0x7fff93f12665 _AXXMIGCopyElementAtPosition + 0xcf
   6 com.apple.HIServices           0x7fff93f18d53 _XCopyElementAtPosition + 0x109
   7 com.apple.HIServices           0x7fff93ef6f4e mshMIGPerform + 0x1bb

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