mn10300: copy_from_user() should zero on access_ok() failure...
authorAl Viro <viro@zeniv.linux.org.uk>
Sat, 20 Aug 2016 20:33:10 +0000 (16:33 -0400)
committerAl Viro <viro@zeniv.linux.org.uk>
Tue, 13 Sep 2016 21:49:42 +0000 (17:49 -0400)
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
arch/mn10300/lib/usercopy.c

index 7826e6c364e74f0075e43081e5db367062baef30..ce8899e5e171370ebc88c08a91727ef9232febf9 100644 (file)
@@ -9,7 +9,7 @@
  * as published by the Free Software Foundation; either version
  * 2 of the Licence, or (at your option) any later version.
  */
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 
 unsigned long
 __generic_copy_to_user(void *to, const void *from, unsigned long n)
@@ -24,6 +24,8 @@ __generic_copy_from_user(void *to, const void *from, unsigned long n)
 {
        if (access_ok(VERIFY_READ, from, n))
                __copy_user_zeroing(to, from, n);
+       else
+               memset(to, 0, n);
        return n;
 }