Safari: DFG Worklist Worker Thread crashes Safari

Originator:dieter.komendera
Number:rdar://20512791 Date Originated:12-Apr-2015 06:06 PM
Status:Open Resolved:
Product:Safari Product Version:Safari 8.0.5 (10600.5.17)
Classification:Crash/Hang/Data Loss Reproducible:Unable
 
Summary:
I’ve had Safari’s “DFG Worklist Worker Thread” crash Safari (8.0.5 on 10.10.3) twice now. The last time I was typing into a text field (ironically at bugreport.apple.com), loosing my already typed text.


Thread 15 Crashed:: DFG Worklist Worker Thread
0   com.apple.JavaScriptCore      	0x00007fff8e9ed5fe WTFCrash + 62
1   com.apple.JavaScriptCore      	0x00007fff8ead5a08 JSC::DFG::SpeculativeJIT::fillSpeculateInt52(JSC::DFG::Edge, JSC::DataFormat) + 1944
2   com.apple.JavaScriptCore      	0x00007fff8e90ecd0 JSC::DFG::SpeculativeJIT::compileAdd(JSC::DFG::Node*) + 2720
3   com.apple.JavaScriptCore      	0x00007fff8e8ed59e JSC::DFG::SpeculativeJIT::compile(JSC::DFG::Node*) + 3694
4   com.apple.JavaScriptCore      	0x00007fff8eabcdc6 JSC::DFG::SpeculativeJIT::compileCurrentBlock() + 1302
5   com.apple.JavaScriptCore      	0x00007fff8e8ebea2 JSC::DFG::SpeculativeJIT::compile() + 114
6   com.apple.JavaScriptCore      	0x00007fff8ea8f426 JSC::DFG::JITCompiler::compileFunction() + 710
7   com.apple.JavaScriptCore      	0x00007fff8eab7aa5 JSC::DFG::Plan::compileInThreadImpl(JSC::DFG::LongLivedState&) + 1925
8   com.apple.JavaScriptCore      	0x00007fff8eab70bd JSC::DFG::Plan::compileInThread(JSC::DFG::LongLivedState&, JSC::DFG::ThreadData*) + 493
9   com.apple.JavaScriptCore      	0x00007fff8eaf0a82 JSC::DFG::Worklist::runThread(JSC::DFG::ThreadData*) + 546
10  com.apple.JavaScriptCore      	0x00007fff8e7eecff WTF::wtfThreadEntryPoint(void*) + 15

I think that the worker thread should not take down the whole browser, potentially loosing data. I’m attaching the 2 crash reports I have.

Comments


Please note: Reports posted here will not necessarily be seen by Apple. All problems should be submitted at bugreport.apple.com before they are posted here. Please only post information for Radars that you have filed yourself, and please do not include Apple confidential information in your posts. Thank you!