diff --git a/[refs] b/[refs]
index 59f99789334f..940820e88f73 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9ce8bb55e32d11bb82e19e76bdd2cf1c2ed32fd1
+refs/heads/master: ecbab71c521819716e204659dfe72fc39d00630a
diff --git a/trunk/arch/arm/kernel/entry-armv.S b/trunk/arch/arm/kernel/entry-armv.S
index 77b047475539..85040cfeb5e5 100644
--- a/trunk/arch/arm/kernel/entry-armv.S
+++ b/trunk/arch/arm/kernel/entry-armv.S
@@ -650,6 +650,7 @@ ENTRY(fp_enter)
 no_fp:	mov	pc, lr
 
 __und_usr_unknown:
+	enable_irq
 	mov	r0, sp
 	adr	lr, ret_from_exception
 	b	do_undefinstr