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Date: Sat, 8 Jun 2013 18:21:42 +0200
From: Julia Lawall <Julia.Lawall@...6.fr>
To: cocci@...teme.lip6.fr, mmarek@...e.cz
Cc: kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] scripts/coccinelle: check for field address argument to kfree
From: Julia Lawall <Julia.Lawall@...6.fr>
The argument to kfree should not be the address of a structure field.
Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>
---
scripts/coccinelle/free/kfreeaddr.cocci | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/scripts/coccinelle/free/kfreeaddr.cocci b/scripts/coccinelle/free/kfreeaddr.cocci
new file mode 100644
index 0000000..662e997
--- /dev/null
+++ b/scripts/coccinelle/free/kfreeaddr.cocci
@@ -0,0 +1,32 @@
+/// Free of a structure field
+///
+// Confidence: High
+// Copyright: (C) 2013 Julia Lawall, INRIA/LIP6. GPLv2.
+// URL: http://coccinelle.lip6.fr/
+// Comments:
+// Options: -no_includes -include_headers
+
+virtual org
+virtual report
+virtual context
+
+@r depends on context || report || org @
+expression e;
+identifier f;
+position p;
+@@
+
+* kfree@p(&e->f)
+
+@...ipt:python depends on org@
+p << r.p;
+@@
+
+cocci.print_main("kfree",p)
+
+@...ipt:python depends on report@
+p << r.p;
+@@
+
+msg = "ERROR: kfree of structure field"
+coccilib.report.print_report(p[0],msg)
--
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