Index: clang/include/clang/Basic/DiagnosticSemaKinds.td
===================================================================
--- clang/include/clang/Basic/DiagnosticSemaKinds.td
+++ clang/include/clang/Basic/DiagnosticSemaKinds.td
@@ -4049,6 +4049,9 @@
 def warn_attribute_type_not_supported : Warning<
   "%0 attribute argument not supported: %1">,
   InGroup<IgnoredAttributes>;
+def warn_attribute_type_not_supported_global : Warning<
+  "%0 attribute argument not supported for globals: %1">,
+  InGroup<IgnoredAttributes>;
 def warn_attribute_unknown_visibility : Warning<"unknown visibility %0">,
   InGroup<IgnoredAttributes>;
 def warn_attribute_protected_visibility :
Index: clang/lib/Sema/SemaDeclAttr.cpp
===================================================================
--- clang/lib/Sema/SemaDeclAttr.cpp
+++ clang/lib/Sema/SemaDeclAttr.cpp
@@ -7877,8 +7877,8 @@
         SanitizerName != "coverage")
       S.Diag(LiteralLoc, diag::warn_unknown_sanitizer_ignored) << SanitizerName;
     else if (isGlobalVar(D) && !isSanitizerAttributeAllowedOnGlobals(SanitizerName))
-      S.Diag(D->getLocation(), diag::err_attribute_wrong_decl_type)
-          << AL << ExpectedFunctionOrMethod;
+      S.Diag(D->getLocation(), diag::warn_attribute_type_not_supported_global)
+          << AL << SanitizerName;
     Sanitizers.push_back(SanitizerName);
   }
 
Index: clang/test/SemaCXX/attr-no-sanitize.cpp
===================================================================
--- clang/test/SemaCXX/attr-no-sanitize.cpp
+++ clang/test/SemaCXX/attr-no-sanitize.cpp
@@ -6,6 +6,9 @@
 
 int f2() __attribute__((no_sanitize(1))); // expected-error{{'no_sanitize' attribute requires a string}}
 
+__attribute__((no_sanitize("all"))) int global; // expected-warning{{'no_sanitize' attribute argument not supported for globals: all}}
+__attribute__((no_sanitize("unknown"))) int global2; // expected-warning{{unknown sanitizer 'unknown' ignored}}
+
 // DUMP-LABEL: FunctionDecl {{.*}} f3
 // DUMP: NoSanitizeAttr {{.*}} address
 // PRINT: int f3() __attribute__((no_sanitize("address")))