Bug 158273 – Crash under eventTargetRespectingTargetRules()

• Component: DOM
• Status: RESOLVED FIXED

[Chris Dumez]

Crash under eventTargetRespectingTargetRules():
Thread[0] EXC_BAD_ACCESS (SIGSEGV) (KERN_INVALID_ADDRESS at 0x0000000000000014)
[  0] 0x00007fff8b857995 WebCore`WebCore::EventPath::EventPath(WebCore::Node&, WebCore::Event&) [inlined] WebCore::Node::getFlag(WebCore::Node::NodeFlags) const at Node.h:625:49
       621 	
       622 	        DefaultNodeFlags = IsParsingChildrenFinishedFlag
       623 	    };
       624 	
    -> 625 	    bool getFlag(NodeFlags mask) const { return m_nodeFlags & mask; }
       626 	    void setFlag(bool f, NodeFlags mask) const { m_nodeFlags = (m_nodeFlags & ~mask) | (-(int32_t)f & mask); } 
       627 	    void setFlag(NodeFlags mask) const { m_nodeFlags |= mask; } 
       628 	    void clearFlag(NodeFlags mask) const { m_nodeFlags &= ~mask; }
       629 	
    

     0x00007fff8b85798a:    testb %al, %al
     0x00007fff8b85798c:     movq %r15, %r14
     0x00007fff8b85798f:       je 0x5b3995             ; <+117> [inlined] WebCore::Node::getFlag(WebCore::Node::NodeFlags) const at Node.h:217
     0x00007fff8b857991:     movq 0x60(%r15), %r14
 ->  0x00007fff8b857995:     movl 0x14(%r14), %eax
     0x00007fff8b857999:     movl %eax, %ecx
     0x00007fff8b85799b:     andl $0x100004, %ecx      ; imm = 0x100004 
     0x00007fff8b8579a1:     cmpl $0x100004, %ecx      ; imm = 0x100004 
     0x00007fff8b8579a7:      jne 0x5b39cf             ; <+175> [inlined] WebCore::Node::getFlag(WebCore::Node::NodeFlags) const + 4 at Node.h:221

[  0] 0x00007fff8b857995 WebCore`WebCore::EventPath::EventPath(WebCore::Node&, WebCore::Event&) [inlined] WebCore::Node::isElementNode() const at Node.h:217
       213 	    WEBCORE_EXPORT void remove(ExceptionCode&);
       214 	
       215 	    // Other methods (not part of DOM)
       216 	
    -> 217 	    bool isElementNode() const { return getFlag(IsElementFlag); }
       218 	    bool isContainerNode() const { return getFlag(IsContainerFlag); }
       219 	    bool isTextNode() const { return getFlag(IsTextFlag); }
       220 	    bool isHTMLElement() const { return getFlag(IsHTMLFlag); }
       221 	    bool isSVGElement() const { return getFlag(IsSVGFlag); }
    
[  0] 0x00007fff8b857995 WebCore`WebCore::EventPath::EventPath(WebCore::Node&, WebCore::Event&) [inlined] WebCore::Node::pseudoId() const at Node.h:227
       223 	
       224 	    bool isPseudoElement() const { return pseudoId() != NOPSEUDO; }
       225 	    bool isBeforePseudoElement() const { return pseudoId() == BEFORE; }
       226 	    bool isAfterPseudoElement() const { return pseudoId() == AFTER; }
    -> 227 	    PseudoId pseudoId() const { return (isElementNode() && hasCustomStyleResolveCallbacks()) ? customPseudoId() : NOPSEUDO; }
       228 	
       229 	    virtual bool isMediaControlElement() const { return false; }
       230 	    virtual bool isMediaControls() const { return false; }
       231 	#if ENABLE(VIDEO_TRACK)
    
[  0] 0x00007fff8b857995 WebCore`WebCore::EventPath::EventPath(WebCore::Node&, WebCore::Event&) [inlined] WebCore::Node::isPseudoElement() const at Node.h:224
       220 	    bool isHTMLElement() const { return getFlag(IsHTMLFlag); }
       221 	    bool isSVGElement() const { return getFlag(IsSVGFlag); }
       222 	    bool isMathMLElement() const { return getFlag(IsMathMLFlag); }
       223 	
    -> 224 	    bool isPseudoElement() const { return pseudoId() != NOPSEUDO; }
       225 	    bool isBeforePseudoElement() const { return pseudoId() == BEFORE; }
       226 	    bool isAfterPseudoElement() const { return pseudoId() == AFTER; }
       227 	    PseudoId pseudoId() const { return (isElementNode() && hasCustomStyleResolveCallbacks()) ? customPseudoId() : NOPSEUDO; }
       228 	
    
[  0] 0x00007fff8b857995 WebCore`WebCore::EventPath::EventPath(WebCore::Node&, WebCore::Event&) [inlined] WTF::TypeCastTraits<WebCore::PseudoElement const, WebCore::Node const, false>::isType(WebCore::Node const&) at PseudoElement.h:83
[  0] 0x00007fff8b857995 WebCore`WebCore::EventPath::EventPath(WebCore::Node&, WebCore::Event&) [inlined] WTF::TypeCastTraits<WebCore::PseudoElement const, WebCore::Node const, false>::isOfType(WebCore::Node const&) at PseudoElement.h:82
[  0] 0x00007fff8b857995 WebCore`WebCore::EventPath::EventPath(WebCore::Node&, WebCore::Event&) [inlined] bool WTF::is<WebCore::PseudoElement, WebCore::Node>(WebCore::Node&) at TypeCasts.h:59
[  0] 0x00007fff8b857995 WebCore`WebCore::EventPath::EventPath(WebCore::Node&, WebCore::Event&) [inlined] WebCore::EventPath::eventTargetRespectingTargetRules(WebCore::Node&) at EventPath.h:55
[  0] 0x00007fff8b857995 WebCore`WebCore::EventPath::EventPath(WebCore::Node&, WebCore::Event&) + 117 at EventPath.cpp:94
[  1] 0x00007fff8b84f47d WebCore`WebCore::EventDispatcher::dispatchEvent(WebCore::Node*, WebCore::Event&) + 77 at EventDispatcher.cpp:157:15
[  2] 0x00007fff8b40cad3 WebCore`WebCore::AnimationControllerPrivate::fireEventsAndUpdateStyle() + 355 at AnimationController.cpp:208:13
[  3] 0x00007fff8b581e66 WebCore`WebCore::AnimationControllerPrivate::animationTimerFired() + 182 at AnimationController.cpp:272:5
[  4] 0x00007fff8b2b760f WebCore`WebCore::ThreadTimers::sharedTimerFiredInternal() + 175 at ThreadTimers.cpp:121:9
[  5] 0x00007fff8b2b754e WebCore`WebCore::timerFired(__CFRunLoopTimer*, void*) + 30 at MainThreadSharedTimerCF.cpp:74:5

[Chris Dumez]

<rdar://problem/26343998>

[Chris Dumez]

Created attachment 280266 [details]
Patch

[Chris Dumez]

Comment on attachment 280266 [details]
Patch

Clearing flags on attachment: 280266

Committed r201571: <http://trac.webkit.org/changeset/201571>

[Chris Dumez]

All reviewed patches have been landed.  Closing bug.