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- // SPDX-License-Identifier: GPL-2.0-only
- /// The various basic memory allocation functions don't return ERR_PTR
- ///
- // Confidence: High
- // Copyright: (C) 2010-2012 Nicolas Palix.
- // Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6.
- // Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6.
- // URL: https://coccinelle.gitlabpages.inria.fr/website
- // Comments:
- // Options: --no-includes --include-headers
- virtual patch
- virtual context
- virtual org
- virtual report
- @depends on patch@
- expression x,E;
- @@
- x = \(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\)(...)
- ... when != x = E
- - IS_ERR(x)
- + !x
- @r depends on !patch exists@
- expression x,E;
- position p1,p2;
- @@
- *x = \(kmalloc@p1\|kzalloc@p1\|kcalloc@p1\|kmem_cache_alloc@p1\|kmem_cache_zalloc@p1\|kmem_cache_alloc_node@p1\|kmalloc_node@p1\|kzalloc_node@p1\)(...)
- ... when != x = E
- * IS_ERR@p2(x)
- @script:python depends on org@
- p1 << r.p1;
- p2 << r.p2;
- @@
- cocci.print_main("alloc call",p1)
- cocci.print_secs("IS_ERR that should be NULL tests",p2)
- @script:python depends on report@
- p1 << r.p1;
- p2 << r.p2;
- @@
- msg = "ERROR: allocation function on line %s returns NULL not ERR_PTR on failure" % (p1[0].line)
- coccilib.report.print_report(p2[0], msg)
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