2012-02-02 14:53:08 +00:00
|
|
|
/// PTR_ERR should be applied before its argument is reassigned, typically
|
|
|
|
|
/// to NULL
|
|
|
|
|
///
|
|
|
|
|
// Confidence: High
|
|
|
|
|
// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6. GPLv2.
|
|
|
|
|
// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6. GPLv2.
|
|
|
|
|
// URL: http://coccinelle.lip6.fr/
|
|
|
|
|
// Comments:
|
2013-06-20 11:10:56 +00:00
|
|
|
// Options: --no-includes --include-headers
|
2012-02-02 14:53:08 +00:00
|
|
|
|
|
|
|
|
virtual org
|
|
|
|
|
virtual report
|
|
|
|
|
virtual context
|
|
|
|
|
|
|
|
|
|
@r exists@
|
|
|
|
|
expression e,e1;
|
|
|
|
|
constant c;
|
|
|
|
|
position p1,p2;
|
|
|
|
|
@@
|
|
|
|
|
|
|
|
|
|
*e@p1 = c
|
|
|
|
|
... when != e = e1
|
|
|
|
|
when != &e
|
|
|
|
|
when != true IS_ERR(e)
|
|
|
|
|
*PTR_ERR@p2(e)
|
|
|
|
|
|
|
|
|
|
@script:python depends on org@
|
|
|
|
|
p1 << r.p1;
|
|
|
|
|
p2 << r.p2;
|
|
|
|
|
@@
|
|
|
|
|
|
|
|
|
|
cocci.print_main("PTR_ERR",p2)
|
|
|
|
|
cocci.print_secs("assignment",p1)
|
|
|
|
|
|
|
|
|
|
@script:python depends on report@
|
|
|
|
|
p1 << r.p1;
|
|
|
|
|
p2 << r.p2;
|
|
|
|
|
@@
|
|
|
|
|
|
|
|
|
|
msg = "ERROR: PTR_ERR applied after initialization to constant on line %s" % (p1[0].line)
|
|
|
|
|
coccilib.report.print_report(p2[0],msg)
|
