This is the trace I get just by visiting the URL mentioned in the bug report: #0 0x00007ffff44d0cac in WebCore::HTMLFrameElementBase::insertedIntoDocument (this=0x7fffe0217c60) at ../../Source/WebCore/html/HTMLFrameElementBase.cpp:212 #1 0x00007ffff44d52c3 in WebCore::HTMLIFrameElement::insertedIntoDocument (this=0x7fffe0217c60) at ../../Source/WebCore/html/HTMLIFrameElement.cpp:114 #2 0x00007ffff42d8a04 in WebCore::ContainerNode::insertedIntoDocument (this=0x7fffe0215a70) at ../../Source/WebCore/dom/ContainerNode.cpp:811 #3 0x00007ffff433cae5 in WebCore::Element::insertedIntoDocument (this=0x7fffe0215a70) at ../../Source/WebCore/dom/Element.cpp:868 #4 0x00007ffff42d8a04 in WebCore::ContainerNode::insertedIntoDocument (this=0x7fffe0215e70) at ../../Source/WebCore/dom/ContainerNode.cpp:811 #5 0x00007ffff433cae5 in WebCore::Element::insertedIntoDocument (this=0x7fffe0215e70) at ../../Source/WebCore/dom/Element.cpp:868 #6 0x00007ffff42d8a04 in WebCore::ContainerNode::insertedIntoDocument (this=0x7fffe0213cf0) at ../../Source/WebCore/dom/ContainerNode.cpp:811 #7 0x00007ffff433cae5 in WebCore::Element::insertedIntoDocument (this=0x7fffe0213cf0) at ../../Source/WebCore/dom/Element.cpp:868 #8 0x00007ffff42d8a04 in WebCore::ContainerNode::insertedIntoDocument (this=0x7fffe02138d0) at ../../Source/WebCore/dom/ContainerNode.cpp:811 #9 0x00007ffff433cae5 in WebCore::Element::insertedIntoDocument (this=0x7fffe02138d0) at ../../Source/WebCore/dom/Element.cpp:868 #10 0x00007ffff42d8a04 in WebCore::ContainerNode::insertedIntoDocument (this=0x7fffe0201870) at ../../Source/WebCore/dom/ContainerNode.cpp:811 #11 0x00007ffff433cae5 in WebCore::Element::insertedIntoDocument (this=0x7fffe0201870) at ../../Source/WebCore/dom/Element.cpp:868 #12 0x00007ffff42d8a04 in WebCore::ContainerNode::insertedIntoDocument (this=0x7fffe01d5b80) at ../../Source/WebCore/dom/ContainerNode.cpp:811 #13 0x00007ffff433cae5 in WebCore::Element::insertedIntoDocument (this=0x7fffe01d5b80) at ../../Source/WebCore/dom/Element.cpp:868 #14 0x00007ffff42d8a04 in WebCore::ContainerNode::insertedIntoDocument (this=0x7fffe01dbc00) at ../../Source/WebCore/dom/ContainerNode.cpp:811 #15 0x00007ffff433cae5 in WebCore::Element::insertedIntoDocument (this=0x7fffe01dbc00) at ../../Source/WebCore/dom/Element.cpp:868 #16 0x00007ffff42d8a04 in WebCore::ContainerNode::insertedIntoDocument (this=0x7fffe01d89e0) at ../../Source/WebCore/dom/ContainerNode.cpp:811 #17 0x00007ffff433cae5 in WebCore::Element::insertedIntoDocument (this=0x7fffe01d89e0) at ../../Source/WebCore/dom/Element.cpp:868 #18 0x00007ffff42d9d49 in WebCore::notifyChildInserted (child=0x7fffe01d89e0) at ../../Source/WebCore/dom/ContainerNode.cpp:1102 #19 0x00007ffff42d82b0 in WebCore::ContainerNode::appendChild (this=0x12511e0, newChild=..., ec=@0x7fffffffcdfc, shouldLazyAttach=true) at ../../Source/WebCore/dom/ContainerNode.cpp:667 #20 0x00007ffff43628c8 in WebCore::Node::appendChild (this=0x12511e0, newChild=..., ec=@0x7fffffffcdfc, shouldLazyAttach=true) at ../../Source/WebCore/dom/Node.cpp:660 #21 0x00007ffff4118593 in WebCore::JSNode::appendChild (this=0x7fff951c4da0, exec=0x7fff965263b8) at ../../Source/WebCore/bindings/js/JSNodeCustom.cpp:184 #22 0x00007ffff4dc1382 in WebCore::jsNodePrototypeFunctionAppendChild (exec=0x7fff965263b8) at DerivedSources/WebCore/JSNode.cpp:487
Eric, looks like you added this assertion in <http://trac.webkit.org/r67182>. There are multiple reports about it, see bug 50312, bug 54711, bug 71177.
Thank you for the CC ap. I'll look at this on Monday.
Looking today (sorry, yesterday was a holiday). :)
http://gizmodo.com/5872055/godaddys-now-officially-against-sopa does not reproduce for me. But it's very possible this was ad-related. I'm assuming this is a dupe of bug 50312 *** This bug has been marked as a duplicate of bug 50312 ***