diff --git a/test/InterfaceHash/edited_method_body.swift b/test/InterfaceHash/edited_method_body.swift
index b512d286e8c3d..99e9420d86f69 100644
--- a/test/InterfaceHash/edited_method_body.swift
+++ b/test/InterfaceHash/edited_method_body.swift
@@ -2,6 +2,9 @@
 // Also uses awk:
 // XFAIL OS=windows
 
+// rdar://115209834
+// UNSUPPORTED: OS=linux-gnu
+
 // When adding a private protocol method, the interface hash should stay the same
 // The per-type fingerprint should change
 
diff --git a/test/InterfaceHash/edited_property_getter.swift b/test/InterfaceHash/edited_property_getter.swift
index 05d99baac6493..3ec61db32cf6b 100644
--- a/test/InterfaceHash/edited_property_getter.swift
+++ b/test/InterfaceHash/edited_property_getter.swift
@@ -2,6 +2,9 @@
 // Also uses awk:
 // XFAIL OS=windows
 
+// rdar://115209834
+// UNSUPPORTED: OS=linux-gnu
+
 // When adding a private protocol method, the interface hash should stay the same
 // The per-type fingerprint should change