1 files changed, 3 insertions, 8 deletions

diff --git a/mm/util.c b/mm/util.c
index f5712e8964be..4735ea481816 100644
--- a/mm/util.c
+++ b/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';