36 строки
799 B
Plaintext
36 строки
799 B
Plaintext
|
/// Use kmemdup_user rather than duplicating its implementation
|
||
|
|
/// This is a little bit restricted to reduce false positives
|
||
|
|
///
|
||
|
|
// Confidence: High
|
||
|
|
// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
|
||
|
|
// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
|
||
|
|
// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
|
||
|
|
// URL: http://coccinelle.lip6.fr/
|
||
|
|
// Comments:
|
||
|
|
// Options: -no_includes -include_headers
|
||
|
|
|
||
|
|
virtual patch
|
||
|
|
|
||
|
|
@@
|
||
|
|
expression from,to,size,flag;
|
||
|
|
position p;
|
||
|
|
identifier l1,l2;
|
||
|
|
@@
|
||
|
|
|
||
|
|
- to = \(kmalloc@p\|kzalloc@p\)(size,flag);
|
||
|
|
+ to = memdup_user(from,size);
|
||
|
|
if (
|
||
|
|
- to==NULL
|
||
|
|
+ IS_ERR(to)
|
||
|
|
|| ...) {
|
||
|
|
<+... when != goto l1;
|
||
|
|
- -ENOMEM
|
||
|
|
+ PTR_ERR(to)
|
||
|
|
...+>
|
||
|
|
}
|
||
|
|
- if (copy_from_user(to, from, size) != 0) {
|
||
|
|
- <+... when != goto l2;
|
||
|
|
- -EFAULT
|
||
|
|
- ...+>
|
||
|
|
- }
|