diff --git a/[refs] b/[refs]
index 03ee767d77db..fe146836f412 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4b1c7840b7d01b14a1a00fa0e61b761d4391ba67
+refs/heads/master: 316eb661f125397d46f16f94e3c81ad3dc4c1233
diff --git a/trunk/kernel/cgroup.c b/trunk/kernel/cgroup.c
index 3070164e2036..998ab5957c6a 100644
--- a/trunk/kernel/cgroup.c
+++ b/trunk/kernel/cgroup.c
@@ -1770,9 +1770,9 @@ int cgroup_path(const struct cgroup *cgrp, char *buf, int buflen)
 		return 0;
 	}
 
-	start = buf + buflen;
+	start = buf + buflen - 1;
 
-	*--start = '\0';
+	*start = '\0';
 	for (;;) {
 		int len = dentry->d_name.len;