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coccinelle
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eno.cocci
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/// The various basic memory allocation functions don't return ERR_PTR /// // Confidence: High // Copyright: (C) 2010-2012 Nicolas Palix. GPLv2. // Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6. GPLv2. // Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6. GPLv2. // URL: http://coccinelle.lip6.fr/ // 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)