[Webkit-unassigned] [Bug 108223] New: [Mac] Flaky crash in SliderThumbElement::defaultEventHandler on fast/forms/range/slider-delete-while-dragging-thumb.html

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=108223

           Summary: [Mac] Flaky crash in
                    SliderThumbElement::defaultEventHandler on
                    fast/forms/range/slider-delete-while-dragging-thumb.ht
                    ml
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: rniwa at webkit.org


e.g. http://build.webkit.org/results/Apple%20MountainLion%20Release%20WK1%20(Tests)/r141136%20(6255)/results.html

CRASHING TEST: fast/forms/range/slider-delete-while-dragging-thumb.html

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   com.apple.WebCore                 0x000000010ebb074a WebCore::SliderThumbElement::defaultEventHandler(WebCore::Event*) + 42 (SliderThumbElement.cpp:404)
1   com.apple.WebCore                 0x000000010e33b492 WebCore::EventDispatcher::dispatchEventPostProcess(WTF::PassRefPtr<WebCore::Event>, void*) + 306 (PassRefPtr.h:77)
2   com.apple.WebCore                 0x000000010e33b25f WebCore::EventDispatcher::dispatchEvent(WTF::PassRefPtr<WebCore::Event>) + 1343 (PassRefPtr.h:68)
3   com.apple.WebCore                 0x000000010e950773 WebCore::MouseEventDispatchMediator::dispatchEvent(WebCore::EventDispatcher*) const + 323 (PassRefPtr.h:68)
4   com.apple.WebCore                 0x000000010e3397c0 WebCore::EventDispatcher::dispatchEvent(WebCore::Node*, WTF::PassRefPtr<WebCore::EventDispatchMediator>) + 160 (EventDispatcher.cpp:135)
5   com.apple.WebCore                 0x000000010e964b95 WebCore::Node::dispatchMouseEvent(WebCore::PlatformMouseEvent const&, WTF::AtomicString const&, int, WebCore::Node*) + 133 (Node.cpp:2381)
6   com.apple.WebCore                 0x000000010e343f0b WebCore::EventHandler::updateMouseEventTargetNode(WebCore::Node*, WebCore::PlatformMouseEvent const&, bool) + 1595 (RefPtr.h:70)
7   com.apple.WebCore                 0x000000010e342a3c WebCore::EventHandler::dispatchMouseEvent(WTF::AtomicString const&, WebCore::Node*, bool, int, WebCore::PlatformMouseEvent const&, bool) + 76 (RefPtr.h:70)
8   com.apple.WebCore                 0x000000010e342632 WebCore::EventHandler::handleMousePressEvent(WebCore::PlatformMouseEvent const&) + 1426 (EventHandler.cpp:1508)
9   com.apple.WebCore                 0x000000010e34a279 WebCore::EventHandler::mouseDown(NSEvent*) + 89 (EventHandlerMac.mm:474)
10  com.apple.WebKit                  0x000000010dd769d9 -[WebHTMLView mouseDown:] + 393 (WebHTMLView.mm:3595)
11  DumpRenderTree                    0x000000010d62de5e -[EventSendingController mouseDown:withModifiers:] + 423 (EventSendingController.mm:357)
12  com.apple.CoreFoundation          0x00007fff939a263c __invoking___ + 140
13  com.apple.CoreFoundation          0x00007fff939a24d7 -[NSInvocation invoke] + 263
14  com.apple.WebCore                 0x000000010e974252 JSC::Bindings::ObjcInstance::invokeObjcMethod(JSC::ExecState*, JSC::Bindings::ObjcMethod*) + 1042 (objc_instance.mm:323)
15  com.apple.WebCore                 0x000000010e973d9d JSC::Bindings::ObjcInstance::invokeMethod(JSC::ExecState*, JSC::RuntimeMethod*) + 93 (objc_instance.mm:232)
16  com.apple.WebCore                 0x000000010eb57560 JSC::callRuntimeMethod(JSC::ExecState*) + 240 (runtime_method.cpp:115)
17  com.apple.JavaScriptCore          0x000000010d923473 JSC::LLInt::setUpCall(JSC::ExecState*, JSC::Instruction*, JSC::CodeSpecializationKind, JSC::JSValue, JSC::LLIntCallLinkInfo*) + 211 (LLIntSlowPaths.cpp:1364)
18  com.apple.JavaScriptCore          0x000000010d927bb0 llint_op_call + 169
19  com.apple.JavaScriptCore          0x000000010d85ddf3 JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 611 (JSCJSValueInlines.h:363)
20  com.apple.JavaScriptCore          0x000000010d769fe5 JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 69 (CallData.cpp:40)
21  com.apple.WebCore                 0x000000010e5da5cf WebCore::JSMainThreadExecState::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 143 (JSMainThreadExecState.h:56)
22  com.apple.WebCore                 0x000000010eb5ac61 WebCore::ScheduledAction::executeFunctionInContext(JSC::JSGlobalObject*, JSC::JSValue, WebCore::ScriptExecutionContext*) + 481 (ScheduledAction.cpp:112)
23  com.apple.WebCore                 0x000000010eb5a8fc WebCore::ScheduledAction::execute(WebCore::Document*) + 156 (ScheduledAction.cpp:134)
24  com.apple.WebCore                 0x000000010e2eced4 WebCore::DOMTimer::fired() + 388 (InspectorInstrumentation.h:284)
25  com.apple.WebCore                 0x000000010ed20a8f WebCore::ThreadTimers::sharedTimerFiredInternal() + 159 (ThreadTimers.cpp:119)
26  com.apple.WebCore                 0x000000010eba9e23 WebCore::timerFired(__CFRunLoopTimer*, void*) + 51 (SharedTimerMac.mm:167)
27  com.apple.CoreFoundation          0x00007fff9396bda4 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20
28  com.apple.CoreFoundation          0x00007fff9396b8bd __CFRunLoopDoTimer + 557
29  com.apple.CoreFoundation          0x00007fff93951099 __CFRunLoopRun + 1513

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