diff --git a/[refs] b/[refs]
index d2f64c3b635f..e24ae9cf9cd9 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: fc2ecf7ec76c5ee150b83dcefc863fa03fd365fb
+refs/heads/master: b0c9d7ff2793502650ad987c3f237d5fe5587a1e
diff --git a/trunk/include/linux/rcupdate.h b/trunk/include/linux/rcupdate.h
index 9e169c2ba91f..c7aeacf7fc98 100644
--- a/trunk/include/linux/rcupdate.h
+++ b/trunk/include/linux/rcupdate.h
@@ -785,6 +785,7 @@ extern struct debug_obj_descr rcuhead_debug_descr;
 
 static inline void debug_rcu_head_queue(struct rcu_head *head)
 {
+	WARN_ON_ONCE((unsigned long)head & 0x3);
 	debug_object_activate(head, &rcuhead_debug_descr);
 	debug_object_active_state(head, &rcuhead_debug_descr,
 				  STATE_RCU_HEAD_READY,