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Diffstat (limited to 'scripts/coccinelle/null/eno.cocci')
| -rw-r--r-- | scripts/coccinelle/null/eno.cocci | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/scripts/coccinelle/null/eno.cocci b/scripts/coccinelle/null/eno.cocci new file mode 100644 index 000000000..7107d6c8d --- /dev/null +++ b/scripts/coccinelle/null/eno.cocci @@ -0,0 +1,49 @@ +// 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) |