From: Denis Efremov <efremov@linux.com> To: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Denis Efremov <efremov@linux.com>, cocci@systeme.lip6.fr, linux-kernel@vger.kernel.org Subject: [PATCH] coccinelle: api: add kzfree script Date: Thu, 4 Jun 2020 17:08:04 +0300 [thread overview] Message-ID: <20200604140805.111613-1-efremov@linux.com> (raw) Check for memset() with 0 followed by kfree(). Signed-off-by: Denis Efremov <efremov@linux.com> --- Patches: 1. kzfree in drivers/w1 https://lkml.org/lkml/2020/6/4/438 2. kzfree in drivers/iommu/ https://lkml.org/lkml/2020/6/4/421 3. kzfree in drivers/scsi/ https://lkml.org/lkml/2020/6/4/442 scripts/coccinelle/api/kzfree.cocci | 53 +++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 scripts/coccinelle/api/kzfree.cocci diff --git a/scripts/coccinelle/api/kzfree.cocci b/scripts/coccinelle/api/kzfree.cocci new file mode 100644 index 000000000000..c6b8f7676af4 --- /dev/null +++ b/scripts/coccinelle/api/kzfree.cocci @@ -0,0 +1,53 @@ +// SPDX-License-Identifier: GPL-2.0-only +/// +/// Use kzfree rather than memset with 0 followed by kfree +/// +// Confidence: High +// Copyright: (C) 2020 Denis Efremov ISPRAS +// Options: --no-includes --include-headers +// +// Keywords: kzfree +// + +virtual context +virtual org +virtual report +virtual patch + +// Ignore kzfree definition +// Ignore kasan test +@r depends on !patch && !(file in "lib/test_kasan.c") && !(file in "mm/slab_common.c")@ +expression E; +position p; +@@ + +( +* memset(E, 0, ...); +| +* memset(E, '\0', ...); +) +* kfree(E)@p; + +@r1 depends on patch && !(file in "lib/test_kasan.c") && !(file in "mm/slab_common.c")@ +expression E; +@@ + +( +- memset(E, 0, ...); +| +- memset(E, '\0', ...); +) +- kfree(E); ++ kzfree(E); + +@script:python depends on report@ +p << r.p; +@@ + +coccilib.report.print_report(p[0], "WARNING opportunity for kzfree") + +@script:python depends on org@ +p << r.p; +@@ + +coccilib.org.print_todo(p[0], "WARNING opportunity for kzfree") -- 2.26.2
WARNING: multiple messages have this Message-ID (diff)
From: Denis Efremov <efremov@linux.com> To: Julia Lawall <Julia.Lawall@lip6.fr> Cc: cocci@systeme.lip6.fr, linux-kernel@vger.kernel.org Subject: [Cocci] [PATCH] coccinelle: api: add kzfree script Date: Thu, 4 Jun 2020 17:08:04 +0300 [thread overview] Message-ID: <20200604140805.111613-1-efremov@linux.com> (raw) Check for memset() with 0 followed by kfree(). Signed-off-by: Denis Efremov <efremov@linux.com> --- Patches: 1. kzfree in drivers/w1 https://lkml.org/lkml/2020/6/4/438 2. kzfree in drivers/iommu/ https://lkml.org/lkml/2020/6/4/421 3. kzfree in drivers/scsi/ https://lkml.org/lkml/2020/6/4/442 scripts/coccinelle/api/kzfree.cocci | 53 +++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 scripts/coccinelle/api/kzfree.cocci diff --git a/scripts/coccinelle/api/kzfree.cocci b/scripts/coccinelle/api/kzfree.cocci new file mode 100644 index 000000000000..c6b8f7676af4 --- /dev/null +++ b/scripts/coccinelle/api/kzfree.cocci @@ -0,0 +1,53 @@ +// SPDX-License-Identifier: GPL-2.0-only +/// +/// Use kzfree rather than memset with 0 followed by kfree +/// +// Confidence: High +// Copyright: (C) 2020 Denis Efremov ISPRAS +// Options: --no-includes --include-headers +// +// Keywords: kzfree +// + +virtual context +virtual org +virtual report +virtual patch + +// Ignore kzfree definition +// Ignore kasan test +@r depends on !patch && !(file in "lib/test_kasan.c") && !(file in "mm/slab_common.c")@ +expression E; +position p; +@@ + +( +* memset(E, 0, ...); +| +* memset(E, '\0', ...); +) +* kfree(E)@p; + +@r1 depends on patch && !(file in "lib/test_kasan.c") && !(file in "mm/slab_common.c")@ +expression E; +@@ + +( +- memset(E, 0, ...); +| +- memset(E, '\0', ...); +) +- kfree(E); ++ kzfree(E); + +@script:python depends on report@ +p << r.p; +@@ + +coccilib.report.print_report(p[0], "WARNING opportunity for kzfree") + +@script:python depends on org@ +p << r.p; +@@ + +coccilib.org.print_todo(p[0], "WARNING opportunity for kzfree") -- 2.26.2 _______________________________________________ Cocci mailing list Cocci@systeme.lip6.fr https://systeme.lip6.fr/mailman/listinfo/cocci
next reply other threads:[~2020-06-04 14:08 UTC|newest] Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-06-04 14:08 Denis Efremov [this message] 2020-06-04 14:08 ` [Cocci] [PATCH] coccinelle: api: add kzfree script Denis Efremov 2020-06-04 14:15 ` Julia Lawall 2020-06-04 14:15 ` [Cocci] " Julia Lawall 2020-06-04 15:39 ` Denis Efremov 2020-06-04 15:39 ` [Cocci] " Denis Efremov 2020-06-04 15:51 ` Julia Lawall 2020-06-04 15:51 ` [Cocci] " Julia Lawall 2020-06-04 17:22 ` Denis Efremov 2020-06-04 17:22 ` [Cocci] " Denis Efremov 2020-06-04 17:28 ` Julia Lawall 2020-06-04 17:28 ` [Cocci] " Julia Lawall 2020-06-04 16:27 ` Joe Perches 2020-06-04 16:27 ` [Cocci] " Joe Perches 2020-06-04 17:30 ` Denis Efremov 2020-06-04 17:30 ` [Cocci] " Denis Efremov 2020-06-04 17:36 ` Joe Perches 2020-06-04 17:36 ` [Cocci] " Joe Perches 2020-06-14 19:42 ` Denis Efremov 2020-06-14 19:42 ` [Cocci] " Denis Efremov 2020-06-14 20:01 ` Joe Perches 2020-06-14 20:01 ` [Cocci] " Joe Perches 2020-06-15 12:03 ` Dan Carpenter 2020-06-15 12:03 ` [Cocci] " Dan Carpenter 2020-06-15 13:51 ` Denis Efremov 2020-06-15 13:51 ` [Cocci] " Denis Efremov 2020-06-04 20:48 ` [PATCH v2] " Denis Efremov 2020-06-04 20:48 ` [Cocci] " Denis Efremov 2020-06-04 20:57 ` Julia Lawall 2020-06-04 20:57 ` Julia Lawall 2020-06-04 21:03 ` Denis Efremov 2020-06-04 21:03 ` Denis Efremov 2020-06-04 21:25 ` Denis Efremov 2020-06-04 21:25 ` Denis Efremov 2020-06-06 8:16 ` Julia Lawall 2020-06-06 8:16 ` Julia Lawall 2020-06-14 21:54 ` [PATCH v3] " Denis Efremov 2020-06-14 21:54 ` [Cocci] " Denis Efremov 2020-06-17 20:42 ` Julia Lawall 2020-06-17 20:42 ` Julia Lawall 2020-06-17 21:42 ` Denis Efremov 2020-06-17 21:42 ` Denis Efremov 2020-07-07 21:35 ` Julia Lawall 2020-07-07 21:35 ` Julia Lawall 2020-07-17 11:57 ` [PATCH v4] " Denis Efremov 2020-07-17 11:57 ` [Cocci] " Denis Efremov 2020-07-17 20:39 ` Julia Lawall 2020-07-17 20:39 ` [Cocci] " Julia Lawall 2020-08-10 23:45 ` Eric Biggers 2020-08-10 23:45 ` [Cocci] " Eric Biggers 2020-08-11 7:12 ` Denis Efremov 2020-08-11 7:12 ` [Cocci] " Denis Efremov 2020-08-11 7:49 ` [PATCH] coccinelle: api: update kzfree script to kfree_sensitive Denis Efremov 2020-08-11 7:49 ` [Cocci] " Denis Efremov 2020-08-26 8:12 ` Denis Efremov 2020-08-26 8:12 ` [Cocci] " Denis Efremov 2020-09-12 15:08 ` Julia Lawall 2020-09-12 15:08 ` [Cocci] " Julia Lawall 2020-06-04 15:20 [PATCH] coccinelle: api: add kzfree script Markus Elfring 2020-06-04 15:20 ` Markus Elfring 2020-06-04 15:56 ` Julia Lawall 2020-06-04 15:56 ` Julia Lawall
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