diff --git a/sys/arm64/arm64/trap.c b/sys/arm64/arm64/trap.c
index fa921e39b84..226f6959295 100644
--- a/sys/arm64/arm64/trap.c
+++ b/sys/arm64/arm64/trap.c
@@ -318,8 +318,16 @@ data_abort(struct thread *td, struct trapframe *frame, uint64_t esr,
 		ftype = VM_PROT_EXECUTE;
 		break;
 	default:
-		ftype = (esr & ISS_DATA_WnR) == 0 ? VM_PROT_READ :
-		    VM_PROT_WRITE;
+		/*
+		 * If the exception was because of a read or cache operation
+		 * pass a read fault type into the vm code. Cache operations
+		 * need read permission but will set the WnR flag when the
+		 * memory is unmapped.
+		 */
+		if ((esr & ISS_DATA_WnR) == 0 || (esr & ISS_DATA_CM) != 0)
+			ftype = VM_PROT_READ;
+		else
+			ftype = VM_PROT_WRITE;
 		break;
 	}