Index: kernel/arch/ppc32/src/asm.S
===================================================================
--- kernel/arch/ppc32/src/asm.S	(revision 1bb37660771ac9b30c844daebd5d607ac7468abe)
+++ kernel/arch/ppc32/src/asm.S	(revision ac0e791bec95a7b89257f3f53494b844ed59b559)
@@ -309,3 +309,5 @@
 memcpy_from_uspace_failover_address:
 memcpy_to_uspace_failover_address:
-	b memcpy_from_uspace_failover_address
+	# return zero, failure
+	xor r3, r3, r3
+	blr