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-rw-r--r--mm/util.c11
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';