diff --git a/mlir/lib/Dialect/GPU/Transforms/KernelOutlining.cpp b/mlir/lib/Dialect/GPU/Transforms/KernelOutlining.cpp
--- a/mlir/lib/Dialect/GPU/Transforms/KernelOutlining.cpp
+++ b/mlir/lib/Dialect/GPU/Transforms/KernelOutlining.cpp
@@ -274,8 +274,8 @@
   }
 
   GpuKernelOutliningPass(const GpuKernelOutliningPass &other)
-      : dataLayoutSpec(other.dataLayoutSpec) {
-    dataLayoutStr = other.dataLayoutStr;
+      : GpuKernelOutliningBase(other), dataLayoutSpec(other.dataLayoutSpec) {
+    dataLayoutStr = other.dataLayoutStr.getValue();
   }
 
   LogicalResult initialize(MLIRContext *context) override {