1/// The various basic memory allocation functions don't return ERR_PTR 2/// 3// Confidence: High 4// Copyright: (C) 2010-2012 Nicolas Palix. GPLv2. 5// Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6. GPLv2. 6// Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6. GPLv2. 7// URL: http://coccinelle.lip6.fr/ 8// Comments: 9// Options: --no-includes --include-headers 10 11virtual patch 12virtual context 13virtual org 14virtual report 15 16@depends on patch@ 17expression x,E; 18@@ 19 20x = \(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\)(...) 21... when != x = E 22- IS_ERR(x) 23+ !x 24 25@r depends on !patch exists@ 26expression x,E; 27position p1,p2; 28@@ 29 30*x = \(kmalloc@p1\|kzalloc@p1\|kcalloc@p1\|kmem_cache_alloc@p1\|kmem_cache_zalloc@p1\|kmem_cache_alloc_node@p1\|kmalloc_node@p1\|kzalloc_node@p1\)(...) 31... when != x = E 32* IS_ERR@p2(x) 33 34@script:python depends on org@ 35p1 << r.p1; 36p2 << r.p2; 37@@ 38 39cocci.print_main("alloc call",p1) 40cocci.print_secs("IS_ERR that should be NULL tests",p2) 41 42@script:python depends on report@ 43p1 << r.p1; 44p2 << r.p2; 45@@ 46 47msg = "ERROR: allocation function on line %s returns NULL not ERR_PTR on failure" % (p1[0].line) 48coccilib.report.print_report(p2[0], msg) 49