[Webkit-unassigned] [Bug 151279] New: REGRESSION (r190370): CrashTracer: [USER] com.apple.WebKit.WebContent at com.apple.JavaScriptCore: JSC::JITCode::execute + 158

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=151279

            Bug ID: 151279
           Summary: REGRESSION (r190370): CrashTracer: [USER]
                    com.apple.WebKit.WebContent at
                    com.apple.JavaScriptCore: JSC::JITCode::execute + 158
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: msaboff at apple.com

We are crashing loading airbnb.com with a back trace like:

>  1 com.apple.JavaScriptCore       0x7fff8ce0c7ee JSC::JITCode::execute(JSC::VM*, JSC::ProtoCallFrame*) + 0x9e
   2 com.apple.JavaScriptCore       0x7fff8c92616b JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 0x1bb
   3 com.apple.JavaScriptCore       0x7fff8c925f9e JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 0x3e
   4 com.apple.JavaScriptCore       0x7fff8ca569da JSC::boundFunctionCall(JSC::ExecState*) + 0x27a
   5                                0x00003851da001028 0 + 61924200943656
   6 com.apple.JavaScriptCore       0x7fff8cf12941 llint_entry + 0x5ae9
   7 com.apple.JavaScriptCore       0x7fff8cf12941 llint_entry + 0x5ae9
   8 com.apple.JavaScriptCore       0x7fff8cf12941 llint_entry + 0x5ae9
   9 com.apple.JavaScriptCore       0x7fff8cf12941 llint_entry + 0x5ae9
  10 com.apple.JavaScriptCore       0x7fff8cf12941 llint_entry + 0x5ae9
...

<rdar://problem/23484769>

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