diff --git a/ChangeLog b/ChangeLog
index 24144297c3f..f9a1d2183be 100755
--- a/ChangeLog
+++ b/ChangeLog
@@ -10971,3 +10971,6 @@
 	  that fetches the saved value is incorrect; replace with more
 	  traditional push and pop.  This is an important fix.  Noted by
 	  Stefan Kolb (2015-09-14).
+	* All ARMV7-M: Force 8-byte stack alignment when calling from assembly
+	  to C to interrupt handling (2015-09-15).
+
diff --git a/arch b/arch
index e97c72f3ce2..31ae9c30586 160000
--- a/arch
+++ b/arch
@@ -1 +1 @@
-Subproject commit e97c72f3ce29b8a776b7e47c21281b3a7d5a6fbc
+Subproject commit 31ae9c30586e9d5e166964ae89bfe7156e38cf6d