[thirdparty/kernel/stable.git] / scripts / coccinelle / misc / cstptr.cocci

// SPDX-License-Identifier: GPL-2.0-only
/// PTR_ERR should be applied before its argument is reassigned, typically
/// to NULL
///
// Confidence: High
// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6.
// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6.
// URL: http://coccinelle.lip6.fr/
// Comments:
// Options: --no-includes --include-headers

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)
Commit	Line	Data
7f904d7e	1	// SPDX-License-Identifier: GPL-2.0-only
4a05f067 JL	2	/// PTR_ERR should be applied before its argument is reassigned, typically
	3	/// to NULL
	4	///
	5	// Confidence: High
7f904d7e TG	6	// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6.
7f904d7e TG	7	// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6.
4a05f067 JL	8	// URL: http://coccinelle.lip6.fr/
4a05f067 JL	9	// Comments:
93f14468	10	// Options: --no-includes --include-headers
4a05f067 JL	11
	12	virtual org
	13	virtual report
	14	virtual context
	15
	16	@r exists@
	17	expression e,e1;
	18	constant c;
	19	position p1,p2;
	20	@@
	21
	22	*e@p1 = c
	23	... when != e = e1
	24	when != &e
	25	when != true IS_ERR(e)
	26	*PTR_ERR@p2(e)
	27
	28	@script:python depends on org@
	29	p1 << r.p1;
	30	p2 << r.p2;
	31	@@
	32
	33	cocci.print_main("PTR_ERR",p2)
	34	cocci.print_secs("assignment",p1)
	35
	36	@script:python depends on report@
	37	p1 << r.p1;
	38	p2 << r.p2;
	39	@@
	40
	41	msg = "ERROR: PTR_ERR applied after initialization to constant on line %s" % (p1[0].line)
	42	coccilib.report.print_report(p2[0],msg)