diff --git a/arch/arm64/include/asm/rwonce.h b/arch/arm64/include/asm/rwonce.h
index 9fd24cef3376..0f3a01d30f66 100644
--- a/arch/arm64/include/asm/rwonce.h
+++ b/arch/arm64/include/asm/rwonce.h
@@ -42,8 +42,12 @@
  */
 #define __READ_ONCE(x)							\
 ({									\
-	typeof(&(x)) __x = &(x);					\
-	union { __rwonce_typeof_unqual(*__x) __val; char __c[1]; } __u;	\
+	auto __x = &(x);						\
+	auto __ret = (__rwonce_typeof_unqual(*__x) *)__x;		\
+	/* Hides alias reassignment from Clang's -Wthread-safety. */	\
+	auto __retp = &__ret;						\
+	union { typeof(*__ret) __val; char __c[1]; } __u;		\
+	*__retp = &__u.__val;						\
 	switch (sizeof(x)) {						\
 	case 1:								\
 		asm volatile(__LOAD_RCPC(b, %w0, %1)			\
@@ -68,7 +72,7 @@
 	default:							\
 		__u.__val = *(volatile typeof(*__x) *)__x;		\
 	}								\
-	__u.__val;							\
+	*__ret;								\
 })
 
 #endif	/* !BUILD_VDSO */