26671 2009-06-24 00:02:20 -0700 Safari 4.0 crashes in WebCore::DOMTimer::fired() 2009-06-28 19:01:56 -0700 1 1 1 Unclassified WebKit DOM 528+ (Nightly build) All All VERIFIED FIXED http://lite.maps.nsw.gov.au/ InRadar, NeedsReduction P1 Major --- 1 david.carter webkit-unassigned mitz mrowe oldest_to_newest 127834 0 david.carter 2009-06-24 00:02:20 -0700 Safari 4.0 (530.17) crashes in WebCore::DOMTimer::fired(). The crash did not occur in Safari 3.2.2 (from http://support.apple.com/downloads/Safari_3_2_2_for_Windows). To repeat the crash, follow these steps: 1. Load http://lite.maps.nsw.gov.au/ 2. Click the zoom box tool on the circular navigator. 3. Click and drag the map to zoom into an area. Safari will crash. I checked out and debugged the latest WebKit code in Visual Studio, and found the crash was occurring in WebCore::DOMTimer::fired(). The error reported by Visual Stuio when the crash occurs is "A buffer overrun has occurred in Safari.exe which has corrupted the program's internal state.". Also, here is the Visual Studio call stack at the time of the crash: WebKit.dll!__crt_debugger_hook() Unknown WebKit.dll!__report_gsfailure() Line 298 + 0x7 bytes C WebKit.dll!WebCore::Node::compareDocumentPosition(WebCore::Node * otherNode=0x00000000) Line 2073 + 0x15 bytes C++ WebKit.dll!WebCore::Document::addStyleSheetCandidateNode(WebCore::Node * node=0x7e9bb160, bool createdByParser=true) Line 2287 C++ WebKit.dll!WebCore::ProcessingInstruction::insertedIntoDocument() Line 254 C++ WebKit.dll!WebCore::dispatchChildInsertionEvents(WebCore::Node * child=0x7e9bb160, int & ec=0) Line 874 C++ WebKit.dll!WebCore::ContainerNode::appendChild(WTF::PassRefPtr<WebCore::Node> newChild={...}, int & ec=2124132704, bool shouldLazyAttach=true) Line 483 + 0x7 bytes C++ WebKit.dll!WebCore::JSNode::appendChild(JSC::ExecState * exec=0x0c568944, const JSC::ArgList & args={...}) Line 105 C++ WebKit.dll!WebCore::jsNodePrototypeFunctionAppendChild(JSC::ExecState * exec=0x00000000, JSC::JSObject * __formal=0x0f662e14, JSC::JSValue thisValue={...}, const JSC::ArgList & args={...}) Line 1295 + 0xd bytes C++ JavaScriptCore.dll!JSC::JITCode::execute(JSC::RegisterFile * registerFile=0x7fd81d88, JSC::ExecState * callFrame=0x0c568024, JSC::JSGlobalData * globalData=0x00000000, JSC::JSValue * exception=0x0012f980) Line 83 + 0x1d bytes C++ JavaScriptCore.dll!JSC::Interpreter::execute(JSC::ProgramNode * programNode=, JSC::ExecState * callFrame=, JSC::ScopeChainNode * scopeChain=, JSC::JSObject * thisObj=, JSC::JSValue * exception=) Line 644 + 0x26 bytes C++ JavaScriptCore.dll!JSC::evaluate(JSC::ExecState * exec=0x7fe62500, JSC::ScopeChain & scopeChain={...}, const JSC::SourceCode & source={...}, JSC::JSValue thisValue={...}) Line 69 C++ WebKit.dll!WebCore::ScriptController::evaluate(const WebCore::ScriptSourceCode & sourceCode=) Line 103 C++ WebKit.dll!WebCore::FrameLoader::executeScript(const WebCore::ScriptSourceCode & sourceCode={...}) Line 781 C++ WebKit.dll!WebCore::FrameLoader::executeScript(const WebCore::String & script={...}, bool forceUserGesture=false) Line 768 + 0x6f bytes C++ WebKit.dll!WebCore::ScheduledAction::execute(WebCore::Document * document=0x00000000) Line 128 + 0x12 bytes C++ WebKit.dll!WebCore::DOMTimer::fired() Line 125 + 0x18 bytes C++ 127851 1 mrowe 2009-06-24 00:47:35 -0700 <rdar://problem/7001880> 127934 2 mrowe 2009-06-24 10:03:47 -0700 Does this reproduce in a nightly build of WebKit? 128078 3 david.carter 2009-06-24 19:29:23 -0700 The problem still occurs in the latest WebKit nightly build (r44969 / 24th June 2009). 128079 4 mrowe 2009-06-24 19:36:41 -0700 Thanks. This may be Windows-specific. In my quick test I couldn't reproduce this on Mac OS X. 128196 5 31860 mitz 2009-06-25 08:55:48 -0700 Created attachment 31860 Possible fix (no change log, no layout test) I think the problem is that stale nodes remain in the document’s style sheet candidate set. This patch fixes the crash. 128202 6 31862 mitz 2009-06-25 10:08:16 -0700 Created attachment 31862 Patch, including change log and regression test 128239 7 mitz 2009-06-25 12:45:53 -0700 Fixed in <http://trac.webkit.org/projects/webkit/changeset/45180>. 128762 8 david.carter 2009-06-28 19:01:56 -0700 I've confirmed the crash no longer occurs in the latest WebKit nightly build. Thank you :) 31860 2009-06-25 08:55:48 -0700 2009-06-25 10:08:16 -0700 Possible fix (no change log, no layout test) 26671_r0.diff text/plain 1949 mitz SW5kZXg6IFdlYkNvcmUvZG9tL1Byb2Nlc3NpbmdJbnN0cnVjdGlvbi5jcHAKPT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PQot LS0gV2ViQ29yZS9kb20vUHJvY2Vzc2luZ0luc3RydWN0aW9uLmNwcAkocmV2aXNpb24gNDUxMzYp CisrKyBXZWJDb3JlL2RvbS9Qcm9jZXNzaW5nSW5zdHJ1Y3Rpb24uY3BwCSh3b3JraW5nIGNvcHkp CkBAIC0yNTgsOCArMjU4LDcgQEAgdm9pZCBQcm9jZXNzaW5nSW5zdHJ1Y3Rpb246OnJlbW92ZWRG cm9tRAogewogICAgIENvbnRhaW5lck5vZGU6OnJlbW92ZWRGcm9tRG9jdW1lbnQoKTsKIAotICAg IGlmIChkb2N1bWVudCgpLT5yZW5kZXJlcigpKQotICAgICAgICBkb2N1bWVudCgpLT5yZW1vdmVT dHlsZVNoZWV0Q2FuZGlkYXRlTm9kZSh0aGlzKTsKKyAgICBkb2N1bWVudCgpLT5yZW1vdmVTdHls ZVNoZWV0Q2FuZGlkYXRlTm9kZSh0aGlzKTsKIAogICAgIC8vIEZJWE1FOiBJdCdzIHRlcnJpYmxl IHRvIGRvIGEgc3luY2hyb25vdXMgdXBkYXRlIG9mIHRoZSBzdHlsZSBzZWxlY3RvciBqdXN0IGJl Y2F1c2UgYSA8c3R5bGU+IG9yIDxsaW5rPiBlbGVtZW50IGdvdCByZW1vdmVkLgogICAgIGlmICht 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