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| author | Julia Lawall <Julia.Lawall@lip6.fr> | 2012-02-02 18:53:08 +0400 |
|---|---|---|
| committer | Michal Marek <mmarek@suse.cz> | 2012-02-25 03:07:11 +0400 |
| commit | 4a05f067528610cfd41eb158225db697ae726d51 (patch) | |
| tree | f4b8f0a337853c03236dfa6136da29a9b663bc7f | |
| parent | 47f67ea90259c440fb796883bcd5bdd7c1e6a3b7 (diff) | |
| download | linux-4a05f067528610cfd41eb158225db697ae726d51.tar.xz | |
coccinelle: semantic patch to check for PTR_ERR after reassignment
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Michal Marek <mmarek@suse.cz>
| -rw-r--r-- | scripts/coccinelle/misc/cstptr.cocci | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/scripts/coccinelle/misc/cstptr.cocci b/scripts/coccinelle/misc/cstptr.cocci new file mode 100644 index 000000000000..d42564484528 --- /dev/null +++ b/scripts/coccinelle/misc/cstptr.cocci @@ -0,0 +1,41 @@ +/// PTR_ERR should be applied before its argument is reassigned, typically +/// to NULL +/// +// Confidence: High +// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6. GPLv2. +// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6. GPLv2. +// URL: http://coccinelle.lip6.fr/ +// Comments: +// Options: -no_includes -include_headers + +virtual org +virtual report +virtual context + +@r exists@ +expression e,e1; +constant c; +position p1,p2; +@@ + +*e@p1 = c +... when != e = e1 + when != &e + when != true IS_ERR(e) +*PTR_ERR@p2(e) + +@script:python depends on org@ +p1 << r.p1; +p2 << r.p2; +@@ + +cocci.print_main("PTR_ERR",p2) +cocci.print_secs("assignment",p1) + +@script:python depends on report@ +p1 << r.p1; +p2 << r.p2; +@@ + +msg = "ERROR: PTR_ERR applied after initialization to constant on line %s" % (p1[0].line) +coccilib.report.print_report(p2[0],msg) |