diff --git a/[refs] b/[refs]
index 5884c348744a..7924748d9d76 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9e58143dc08123c22c5b9f782b2913bd3a07a03d
+refs/heads/master: 90d7404558fbe6f369d5e27b5ea3ef1e57562d3d
diff --git a/trunk/mm/util.c b/trunk/mm/util.c
index f5712e8964be..4735ea481816 100644
--- a/trunk/mm/util.c
+++ b/trunk/mm/util.c
@@ -225,15 +225,10 @@ char *strndup_user(const char __user *s, long n)
 	if (length > n)
 		return ERR_PTR(-EINVAL);
 
-	p = kmalloc(length, GFP_KERNEL);
+	p = memdup_user(s, length);
 
-	if (!p)
-		return ERR_PTR(-ENOMEM);
-
-	if (copy_from_user(p, s, length)) {
-		kfree(p);
-		return ERR_PTR(-EFAULT);
-	}
+	if (IS_ERR(p))
+		return p;
 
 	p[length - 1] = '\0';