diff --git a/sys/arm64/arm64/trap.c b/sys/arm64/arm64/trap.c
--- a/sys/arm64/arm64/trap.c
+++ b/sys/arm64/arm64/trap.c
@@ -230,6 +230,10 @@
 {
 	struct pcb *pcb;
 
+	/* Set the fault address to something known when it's not valid */
+	if ((esr & ISS_DATA_FnV) != 0)
+		far = 0;
+
 	if (lower) {
 		call_trapsignal(td, SIGBUS, BUS_OBJERR, (void *)far,
 		    ESR_ELx_EXCEPTION(frame->tf_esr));