24086 2009-02-22 21:20:55 -0800 Regression (r40993): WebKit crashes after logging in to lists.zenbe.com 2009-02-25 23:05:12 -0800 1 1 1 Unclassified WebKit JavaScriptCore 528+ (Nightly build) Mac (Intel) OS X 10.5 RESOLVED FIXED http://lists.zenbe.com InRadar, NeedsReduction, Regression P1 Normal --- 1 kevin zwarich barraclough ggaren zwarich oldest_to_newest 110531 0 kevin 2009-02-22 21:20:55 -0800 The latest WebKit nightly (r41128) crashes 100% of the time after logging in to lists.zenbe.com. Crash was confirmed by pewtermoose in #webkit. 110532 1 dev+webkit 2009-02-22 22:01:31 -0800 Confirmed with r41128 debug build, also crashes with same backtrace when adding a second item to a list: Thread 0 Crashed: 0 ??? 0000000000 0 + 0 1 com.apple.JavaScriptCore 0x0056a126 JSC::JITCode::execute(JSC::RegisterFile*, JSC::ExecState*, JSC::JSGlobalData*, JSC::JSValuePtr*) + 58 (JITCode.h:86) 2 com.apple.JavaScriptCore 0x00553dae JSC::Interpreter::execute(JSC::FunctionBodyNode*, JSC::ExecState*, JSC::JSFunction*, JSC::JSObject*, JSC::ArgList const&, JSC::ScopeChainNode*, JSC::JSValuePtr*) + 888 (Interpreter.cpp:730) 3 com.apple.JavaScriptCore 0x004a4589 JSC::JSFunction::call(JSC::ExecState*, JSC::JSValuePtr, JSC::ArgList const&) + 139 (JSFunction.cpp:83) 4 com.apple.JavaScriptCore 0x004a4642 JSC::call(JSC::ExecState*, JSC::JSValuePtr, JSC::CallType, JSC::CallData const&, JSC::JSValuePtr, JSC::ArgList const&) + 178 (CallData.cpp:39) 5 com.apple.JavaScriptCore 0x004b3390 __ZN3JSCL22functionProtoFuncApplyEPNS_9ExecStateEPNS_8JSObjectENS_10JSValuePtrERKNS_7ArgListE + 686 (FunctionPrototype.cpp:125) 6 com.apple.JavaScriptCore 0x0058b042 JSC::JITStubs::cti_op_call_NotJSFunction(void*, ...) + 534 (JITStubs.cpp:957) 7 com.apple.JavaScriptCore 0x0058515e jscGeneratedNativeCode + 0 (JITStubs.cpp:238) 8 com.apple.JavaScriptCore 0x0056a126 JSC::JITCode::execute(JSC::RegisterFile*, JSC::ExecState*, JSC::JSGlobalData*, JSC::JSValuePtr*) + 58 (JITCode.h:86) 9 com.apple.JavaScriptCore 0x00553dae JSC::Interpreter::execute(JSC::FunctionBodyNode*, JSC::ExecState*, JSC::JSFunction*, JSC::JSObject*, JSC::ArgList const&, JSC::ScopeChainNode*, JSC::JSValuePtr*) + 888 (Interpreter.cpp:730) 110774 2 kevin 2009-02-24 11:16:35 -0800 This bug has made it into the Safari 4 beta. Quite unfortunate. 110779 3 zwarich 2009-02-24 11:23:16 -0800 That's too bad, Kevin. :-( I'll try to reduce this today, so I can fix it. 110834 4 zwarich 2009-02-24 15:13:47 -0800 I'm in the middle of reducing the JS from the page. It's still about 10 000 lines. 110885 5 27953 zwarich 2009-02-24 18:34:40 -0800 Created attachment 27953 Partial reduction Here is a partial reduction of the crash. It is still about 5700 lines. 110917 6 27960 zwarich 2009-02-24 23:38:09 -0800 Created attachment 27960 Further reduction 111039 7 27985 zwarich 2009-02-25 14:29:26 -0800 Created attachment 27985 Further reduction 111102 8 zwarich 2009-02-25 21:01:36 -0800 Here's a reduction that only works with commandline jsc, compiled with all extra JIT optimizations off: function f() { } [].sort(f); f(); It doesn't crash with caching of calls turned on. This more complicated example crashes with caching of calls enabled: function f() { } [].sort(f); function g() { } function h(x) { x(); } h(g); h(g); h(g); h(f); This is caused by r40993: http://trac.webkit.org/changeset/40993 This patch creates CodeBlocks with no JIT code, breaking an assumption in the function call logic. 111106 9 zwarich 2009-02-25 21:13:34 -0800 Gavin and I talked about it a bit and we agree that the best fix is to simply generate JIT code whenever we optimize numeric sorts. The question is whether to add this as an ad-hoc thing at the end of isNumericCompareFunction() or to encapsulate it in FunctionBodyNode in some way. 111110 10 mrowe 2009-02-25 22:48:54 -0800 <rdar://problem/6625111> 111111 11 zwarich 2009-02-25 23:05:12 -0800 Fixed in r41243. 27953 2009-02-24 18:34:40 -0800 2009-02-24 23:38:09 -0800 Partial reduction reduction.html text/html 120881 zwarich PCFET0NUWVBFIGh0bWw+CjxodG1sPgo8aGVhZD4KPHNjcmlwdCB0eXBlPSJ0ZXh0L2phdmFzY3Jp cHQiPgp3aW5kb3cuYm9vdHN0cmFwRGF0YSA9IHsiaW5pdGlhbFVzZXJEYXRhIjp7InNjcm9sbE9y aWVudGF0aW9uIjoiYm90dG9tVXAiLCJsYXN0TmFtZSI6Ilp3YXJpY2giLCJrbGFzcyI6Ikxpc3RV c2VyIiwibG9naW4iOiJjd3p3YXJpY2giLCJzZWN1cml0eUtleSI6IkpxMUk4M2doT1hwNkV5c3ho STBaemRYRW1JZDJhQlI1UE1LdnlKeHMiLCJ0aW1lWm9uZSI6IlVTXC9FYXN0ZXJuIiwiZmlyc3RO YW1lIjoiQ2FtZXJvbiIsInplbnBhZ2VzTmFtZSI6ImN3endhcmljaCIsImlkIjoxMTI1NDZ9LCJs aXN0cyI6W3sicHVibGljS2V5Ijoib29mZzYiLCJrbGFzcyI6IlRvZG9MaXN0Iiwic3VwZXJjb21w 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