diff -r b6c370a546fc -r a52d1e719c4d hotspot/src/cpu/x86/vm/frame_x86.cpp
--- a/hotspot/src/cpu/x86/vm/frame_x86.cpp	Tue Aug 02 20:55:27 2016 -0700
+++ b/hotspot/src/cpu/x86/vm/frame_x86.cpp	Wed Aug 03 09:40:21 2016 -0400
@@ -108,17 +108,7 @@
     // Entry frame checks
     if (is_entry_frame()) {
       // an entry frame must have a valid fp.
-
-      if (!fp_safe) return false;
-
-      // Validate the JavaCallWrapper an entry frame must have
-
-      address jcw = (address)entry_frame_call_wrapper();
-
-      bool jcw_safe = (jcw < thread->stack_base()) && ( jcw > fp);
-
-      return jcw_safe;
-
+      return fp_safe && is_entry_frame_valid(thread);
     }
 
     intptr_t* sender_sp = NULL;
@@ -209,15 +199,8 @@
       }
 
       // construct the potential sender
-
       frame sender(sender_sp, sender_unextended_sp, saved_fp, sender_pc);
-
-      // Validate the JavaCallWrapper an entry frame must have
-      address jcw = (address)sender.entry_frame_call_wrapper();
-
-      bool jcw_safe = (jcw < thread->stack_base()) && ( jcw > (address)sender.fp());
-
-      return jcw_safe;
+      return sender.is_entry_frame_valid(thread);
     }
 
     CompiledMethod* nm = sender_blob->as_compiled_method_or_null();