1 files changed, 1 insertions, 1 deletions

diff --git a/mm/usercopy.c b/mm/usercopy.c
index 2a09796edef8..98e924864554 100644
--- a/mm/usercopy.c
+++ b/mm/usercopy.c
@@ -147,7 +147,7 @@ static inline void check_bogus_address(const unsigned long ptr, unsigned long n,
                                        bool to_user)
 {
         /* Reject if object wraps past end of memory. */
-        if (ptr + n < ptr)
+        if (ptr + (n - 1) < ptr)
                 usercopy_abort("wrapped address", NULL, to_user, 0, ptr + n);
 
         /* Reject if NULL or ZERO-allocation. */