diff --git a/llvm/lib/ExecutionEngine/SectionMemoryManager.cpp b/llvm/lib/ExecutionEngine/SectionMemoryManager.cpp
--- a/llvm/lib/ExecutionEngine/SectionMemoryManager.cpp
+++ b/llvm/lib/ExecutionEngine/SectionMemoryManager.cpp
@@ -161,8 +161,7 @@
   }
 
   // Make read-only data memory read-only.
-  ec = applyMemoryGroupPermissions(RODataMem,
-                                   sys::Memory::MF_READ | sys::Memory::MF_EXEC);
+  ec = applyMemoryGroupPermissions(RODataMem, sys::Memory::MF_READ);
   if (ec) {
     if (ErrMsg) {
       *ErrMsg = ec.message();