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Subject[PATCH] scripts/coccinelle: improve the coverage of some semantic patches
Date
From: Julia Lawall <Julia.Lawall@lip6.fr>

This patch ensures that all semantic patches in the scripts/coccinelle
directory provide the report option. Report messages that include line
numbers now have the line number preceded by "line" for easier subsequent
processing.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

---
scripts/coccinelle/api/kstrdup.cocci | 75 ++++++++++-
scripts/coccinelle/api/memdup.cocci | 34 ++++
scripts/coccinelle/api/memdup_user.cocci | 39 ++++-
scripts/coccinelle/free/kfree.cocci | 14 +-
scripts/coccinelle/iterators/fen.cocci | 73 +++++++++-
scripts/coccinelle/iterators/itnull.cocci | 54 ++++++-
var/julia/linuxcopy/scripts/coccinelle/locks/call_kern.cocci | 67 +++++++--
var/julia/linuxcopy/scripts/coccinelle/locks/flags.cocci | 12 -
var/julia/linuxcopy/scripts/coccinelle/locks/mini_lock.cocci | 15 +-
var/julia/linuxcopy/scripts/coccinelle/misc/doubleinit.cocci | 8 -
var/julia/linuxcopy/scripts/coccinelle/null/eno.cocci | 36 ++++-
11 files changed, 351 insertions(+), 76 deletions(-)
diff --git a/scripts/coccinelle/api/kstrdup.cocci b/scripts/coccinelle/api/kstrdup.cocci
index e0805ad..07a74b2 100644
--- a/scripts/coccinelle/api/kstrdup.cocci
+++ b/scripts/coccinelle/api/kstrdup.cocci
@@ -1,16 +1,19 @@
/// Use kstrdup rather than duplicating its implementation
///
// Confidence: High
-// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
-// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
-// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
+// 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 from,to;
expression flag,E1,E2;
statement S;
@@ -23,7 +26,7 @@ statement S;
... when != \(from = E2 \| to = E2 \)
- strcpy(to, from);

-@@
+@depends on patch@
expression x,from,to;
expression flag,E1,E2,E3;
statement S;
@@ -37,3 +40,65 @@ statement S;
if (to==NULL || ...) S
... when != \(x = E3 \| from = E3 \| to = E3 \)
- memcpy(to, from, x);
+
+// ---------------------------------------------------------------------
+
+@r1 depends on !patch exists@
+expression from,to;
+expression flag,E1,E2;
+statement S;
+position p1,p2;
+@@
+
+* to = kmalloc@p1(strlen(from) + 1,flag);
+ ... when != \(from = E1 \| to = E1 \)
+ if (to==NULL || ...) S
+ ... when != \(from = E2 \| to = E2 \)
+* strcpy@p2(to, from);
+
+@r2 depends on !patch exists@
+expression x,from,to;
+expression flag,E1,E2,E3;
+statement S;
+position p1,p2;
+@@
+
+* x = strlen(from) + 1;
+ ... when != \( x = E1 \| from = E1 \)
+* to = \(kmalloc@p1\|kzalloc@p2\)(x,flag);
+ ... when != \(x = E2 \| from = E2 \| to = E2 \)
+ if (to==NULL || ...) S
+ ... when != \(x = E3 \| from = E3 \| to = E3 \)
+* memcpy@p2(to, from, x);
+
+@script:python depends on org@
+p1 << r1.p1;
+p2 << r1.p2;
+@@
+
+cocci.print_main("WARNING opportunity for kstrdep",p1)
+cocci.print_secs("strcpy",p2)
+
+@script:python depends on org@
+p1 << r2.p1;
+p2 << r2.p2;
+@@
+
+cocci.print_main("WARNING opportunity for kstrdep",p1)
+cocci.print_secs("memcpy",p2)
+
+@script:python depends on report@
+p1 << r1.p1;
+p2 << r1.p2;
+@@
+
+msg = "WARNING opportunity for kstrdep (strcpy on line %s)" % (p2[0].line)
+coccilib.report.print_report(p1[0], msg)
+
+@script:python depends on report@
+p1 << r2.p1;
+p2 << r2.p2;
+@@
+
+msg = "WARNING opportunity for kstrdep (memcpy on line %s)" % (p2[0].line)
+coccilib.report.print_report(p1[0], msg)
diff --git a/scripts/coccinelle/api/memdup.cocci b/scripts/coccinelle/api/memdup.cocci
index b5d7220..4dceab6 100644
--- a/scripts/coccinelle/api/memdup.cocci
+++ b/scripts/coccinelle/api/memdup.cocci
@@ -1,14 +1,17 @@
/// Use kmemdup rather than duplicating its implementation
///
// Confidence: High
-// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
-// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
-// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
+// 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

@r1@
expression from,to;
@@ -28,7 +31,7 @@ position p;
... when != \( x = E1 \| from = E1 \)
to = \(kmalloc@p\|kzalloc@p\)(x,flag);

-@@
+@depends on patch@
expression from,to,size,flag;
position p != {r1.p,r2.p};
statement S;
@@ -38,3 +41,26 @@ statement S;
+ to = kmemdup(from,size,flag);
if (to==NULL || ...) S
- memcpy(to, from, size);
+
+@r depends on !patch@
+expression from,to,size,flag;
+position p != {r1.p,r2.p};
+statement S;
+@@
+
+* to = \(kmalloc@p\|kzalloc@p\)(size,flag);
+ to = kmemdup(from,size,flag);
+ if (to==NULL || ...) S
+* memcpy(to, from, size);
+
+@script:python depends on org@
+p << r.p;
+@@
+
+coccilib.org.print_todo(p[0], "WARNING opportunity for kmemdep")
+
+@script:python depends on report@
+p << r.p;
+@@
+
+coccilib.report.print_report(p[0], "WARNING opportunity for kmemdep")
diff --git a/scripts/coccinelle/api/memdup_user.cocci b/scripts/coccinelle/api/memdup_user.cocci
index 72ce012..2efac28 100644
--- a/scripts/coccinelle/api/memdup_user.cocci
+++ b/scripts/coccinelle/api/memdup_user.cocci
@@ -1,23 +1,25 @@
-/// Use kmemdup_user rather than duplicating its implementation
+/// Use memdup_user rather than duplicating its implementation
/// This is a little bit restricted to reduce false positives
///
// Confidence: High
-// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
-// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
-// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
+// 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 from,to,size,flag;
-position p;
identifier l1,l2;
@@

-- to = \(kmalloc@p\|kzalloc@p\)(size,flag);
+- to = \(kmalloc\|kzalloc\)(size,flag);
+ to = memdup_user(from,size);
if (
- to==NULL
@@ -33,3 +35,26 @@ identifier l1,l2;
- -EFAULT
- ...+>
- }
+
+@r depends on !patch@
+expression from,to,size,flag;
+position p;
+statement S1,S2;
+@@
+
+* to = \(kmalloc@p\|kzalloc@p\)(size,flag);
+ if (to==NULL || ...) S1
+ if (copy_from_user(to, from, size) != 0)
+ S2
+
+@script:python depends on org@
+p << r.p;
+@@
+
+coccilib.org.print_todo(p[0], "WARNING opportunity for memdep_user")
+
+@script:python depends on report@
+p << r.p;
+@@
+
+coccilib.report.print_report(p[0], "WARNING opportunity for memdep_user")
diff --git a/scripts/coccinelle/free/kfree.cocci b/scripts/coccinelle/free/kfree.cocci
index f9f79d9..d9ae6d8 100644
--- a/scripts/coccinelle/free/kfree.cocci
+++ b/scripts/coccinelle/free/kfree.cocci
@@ -5,9 +5,9 @@
//# SCTP_DBG_OBJCNT_DEC that do not actually evaluate their argument
///
// Confidence: Moderate
-// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
-// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
-// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
+// 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
@@ -23,7 +23,7 @@ position p1;
kfree@p1(E)

@print expression@
-constant char *c;
+constant char [] c;
expression free.E,E2;
type T;
position p;
@@ -37,6 +37,10 @@ identifier f;
|
E@p != E2
|
+ E2 == E@p
+|
+ E2 != E@p
+|
!E@p
|
E@p || ...
@@ -113,5 +117,5 @@ p1 << free.p1;
p2 << r.p2;
@@

-msg = "reference preceded by free on line %s" % (p1[0].line)
+msg = "ERROR: reference preceded by free on line %s" % (p1[0].line)
coccilib.report.print_report(p2[0],msg)
diff --git a/scripts/coccinelle/iterators/fen.cocci b/scripts/coccinelle/iterators/fen.cocci
index 77bc108..0a40af8 100644
--- a/scripts/coccinelle/iterators/fen.cocci
+++ b/scripts/coccinelle/iterators/fen.cocci
@@ -2,16 +2,19 @@
/// is no point to call of_node_put on the final value.
///
// Confidence: High
-// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
-// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
-// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
+// 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@
iterator name for_each_node_by_name;
expression np,E;
identifier l;
@@ -24,7 +27,7 @@ for_each_node_by_name(np,...) {
... when != np = E
- of_node_put(np);

-@@
+@depends on patch@
iterator name for_each_node_by_type;
expression np,E;
identifier l;
@@ -37,7 +40,7 @@ for_each_node_by_type(np,...) {
... when != np = E
- of_node_put(np);

-@@
+@depends on patch@
iterator name for_each_compatible_node;
expression np,E;
identifier l;
@@ -50,7 +53,7 @@ for_each_compatible_node(np,...) {
... when != np = E
- of_node_put(np);

-@@
+@depends on patch@
iterator name for_each_matching_node;
expression np,E;
identifier l;
@@ -62,3 +65,59 @@ for_each_matching_node(np,...) {
}
... when != np = E
- of_node_put(np);
+
+// ----------------------------------------------------------------------
+
+@r depends on !patch forall@
+//iterator name for_each_node_by_name;
+//iterator name for_each_node_by_type;
+//iterator name for_each_compatible_node;
+//iterator name for_each_matching_node;
+expression np,E;
+identifier l;
+position p1,p2;
+@@
+
+(
+*for_each_node_by_name@p1(np,...)
+{
+ ... when != break;
+ when != goto l;
+}
+|
+*for_each_node_by_type@p1(np,...)
+{
+ ... when != break;
+ when != goto l;
+}
+|
+*for_each_compatible_node@p1(np,...)
+{
+ ... when != break;
+ when != goto l;
+}
+|
+*for_each_matching_node@p1(np,...)
+{
+ ... when != break;
+ when != goto l;
+}
+)
+... when != np = E
+* of_node_put@p2(np);
+
+@script:python depends on org@
+p1 << r.p1;
+p2 << r.p2;
+@@
+
+cocci.print_main("unneeded of_node_put",p2)
+cocci.print_secs("iterator",p1)
+
+@script:python depends on report@
+p1 << r.p1;
+p2 << r.p2;
+@@
+
+msg = "ERROR: of_node_put not needed after iterator on line %s" % (p1[0].line)
+coccilib.report.print_report(p2[0], msg)
diff --git a/scripts/coccinelle/iterators/itnull.cocci b/scripts/coccinelle/iterators/itnull.cocci
index baa4297..259899f 100644
--- a/scripts/coccinelle/iterators/itnull.cocci
+++ b/scripts/coccinelle/iterators/itnull.cocci
@@ -1,20 +1,24 @@
/// Many iterators have the property that the first argument is always bound
-/// to a real list element, never NULL. False positives arise for some
-/// iterators that do not have this property, or in cases when the loop
-/// cursor is reassigned. The latter should only happen when the matched
-/// code is on the way to a loop exit (break, goto, or return).
+/// to a real list element, never NULL.
+//# False positives arise for some iterators that do not have this property,
+//# or in cases when the loop cursor is reassigned. The latter should only
+//# happen when the matched code is on the way to a loop exit (break, goto,
+//# or return).
///
// Confidence: Moderate
-// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
-// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
-// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
+// 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@
iterator I;
expression x,E,E1,E2;
statement S,S1,S2;
@@ -55,4 +59,36 @@ I(x,...) { <...
x != NULL
+ )
)
- ...> }
\ No newline at end of file
+ ...> }
+
+@r depends on !patch exists@
+iterator I;
+expression x,E;
+position p1,p2;
+@@
+
+*I@p1(x,...)
+{ ... when != x = E
+(
+* x@p2 == NULL
+|
+* x@p2 != NULL
+)
+ ... when any
+}
+
+@script:python depends on org@
+p1 << r.p1;
+p2 << r.p2;
+@@
+
+cocci.print_main("iterator-bound variable",p1)
+cocci.print_secs("useless NULL test",p2)
+
+@script:python depends on report@
+p1 << r.p1;
+p2 << r.p2;
+@@
+
+msg = "ERROR: iterator variable bound on line %s cannot be NULL" % (p1[0].line)
+coccilib.report.print_report(p2[0], msg)
diff --git a/var/linuxes/linux-next/scripts/coccinelle/locks/call_kern.cocci b/var/julia/linuxcopy/scripts/coccinelle/locks/call_kern.cocci
index 00af534..8f10b49 100644
--- a/var/linuxes/linux-next/scripts/coccinelle/locks/call_kern.cocci
+++ b/var/julia/linuxcopy/scripts/coccinelle/locks/call_kern.cocci
@@ -1,17 +1,20 @@
/// Find functions that refer to GFP_KERNEL but are called with locks held.
-/// The proposed change of converting the GFP_KERNEL is not necessarily the
-/// correct one. It may be desired to unlock the lock, or to not call the
-/// function under the lock in the first place.
+//# The proposed change of converting the GFP_KERNEL is not necessarily the
+//# correct one. It may be desired to unlock the lock, or to not call the
+//# function under the lock in the first place.
///
// Confidence: Moderate
-// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
-// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
-// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
+// Copyright: (C) 2012 Nicolas Palix. GPLv2.
+// 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 patch
+virtual context
+virtual org
+virtual report

@gfp exists@
identifier fn;
@@ -32,28 +35,29 @@ fn(...) {
... when any
}

-@locked@
+@locked exists@
identifier gfp.fn;
+position p1,p2;
@@

(
-read_lock_irq
+read_lock_irq@p1
|
-write_lock_irq
+write_lock_irq@p1
|
-read_lock_irqsave
+read_lock_irqsave@p1
|
-write_lock_irqsave
+write_lock_irqsave@p1
|
-spin_lock
+spin_lock@p1
|
-spin_trylock
+spin_trylock@p1
|
-spin_lock_irq
+spin_lock_irq@p1
|
-spin_lock_irqsave
+spin_lock_irqsave@p1
|
-local_irq_disable
+local_irq_disable@p1
)
(...)
... when != read_unlock_irq(...)
@@ -64,11 +68,38 @@ local_irq_disable
when != spin_unlock_irq(...)
when != spin_unlock_irqrestore(...)
when != local_irq_enable(...)
-fn(...)
+fn@p2(...)

-@depends on locked@
+@depends on locked && patch@
position gfp.p;
@@

- GFP_KERNEL@p
+ GFP_ATOMIC
+
+@depends on locked && !patch@
+position gfp.p;
+@@
+
+* GFP_KERNEL@p
+
+@script:python depends on !patch && org@
+p << gfp.p;
+fn << gfp.fn;
+p1 << locked.p1;
+p2 << locked.p2;
+@@
+
+cocci.print_main("lock",p1)
+cocci.print_secs("call",p2)
+cocci.print_secs("GFP_KERNEL",p)
+
+@script:python depends on !patch && report@
+p << gfp.p;
+fn << gfp.fn;
+p1 << locked.p1;
+p2 << locked.p2;
+@@
+
+msg = "ERROR: function %s called on line %s inside lock on line %s but uses GFP_KERNEL" % (fn,p2[0].line,p1[0].line)
+coccilib.report.print_report(p[0], msg)
diff --git a/var/linuxes/linux-next/scripts/coccinelle/locks/flags.cocci b/var/julia/linuxcopy/scripts/coccinelle/locks/flags.cocci
index b4344d8..1c4ffe6 100644
--- a/var/linuxes/linux-next/scripts/coccinelle/locks/flags.cocci
+++ b/var/julia/linuxcopy/scripts/coccinelle/locks/flags.cocci
@@ -1,9 +1,9 @@
/// Find nested lock+irqsave functions that use the same flags variables
///
// Confidence: High
-// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
-// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
-// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
+// 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
@@ -12,7 +12,7 @@ virtual context
virtual org
virtual report

-@r@
+@r exists@
expression lock1,lock2,flags;
position p1,p2;
@@
@@ -39,7 +39,7 @@ read_lock_irqsave@p2(lock2,flags)
write_lock_irqsave@p2(lock2,flags)
)

-@d@
+@d exists@
expression f <= r.flags;
expression lock1,lock2,flags;
position r.p1, r.p2;
@@ -76,5 +76,5 @@ p1 << r.p1;
p2 << r.p2;
@@

-msg="ERROR: nested lock+irqsave that reuses flags from %s." % (p1[0].line)
+msg="ERROR: nested lock+irqsave that reuses flags from line %s." % (p1[0].line)
coccilib.report.print_report(p2[0], msg)
diff --git a/var/linuxes/linux-next/scripts/coccinelle/locks/mini_lock.cocci b/var/julia/linuxcopy/scripts/coccinelle/locks/mini_lock.cocci
index 7641a29..3267d74 100644
--- a/var/linuxes/linux-next/scripts/coccinelle/locks/mini_lock.cocci
+++ b/var/julia/linuxcopy/scripts/coccinelle/locks/mini_lock.cocci
@@ -6,13 +6,14 @@
/// function call that releases the lock.
///
// Confidence: Moderate
-// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
-// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
-// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
+// 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 context
virtual org
virtual report

@@ -57,7 +58,7 @@ position r;

for(...;...;...) { <+... return@r ...; ...+> }

-@err@
+@err exists@
expression E1;
position prelocked.p;
position up != prelocked.p1;
@@ -65,14 +66,14 @@ position r!=looped.r;
identifier lock,unlock;
@@

-lock(E1@p,...);
+*lock(E1@p,...);
<+... when != E1
if (...) {
... when != E1
- return@r ...;
+* return@r ...;
}
...+>
-unlock@up(E1,...);
+*unlock@up(E1,...);

@script:python depends on org@
p << prelocked.p1;
diff --git a/var/linuxes/linux-next/scripts/coccinelle/misc/doubleinit.cocci b/var/julia/linuxcopy/scripts/coccinelle/misc/doubleinit.cocci
index 156b20a..cf74a00 100644
--- a/var/linuxes/linux-next/scripts/coccinelle/misc/doubleinit.cocci
+++ b/var/julia/linuxcopy/scripts/coccinelle/misc/doubleinit.cocci
@@ -3,9 +3,9 @@
/// initialization.
///
// Confidence: Low
-// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
-// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
-// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
+// 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: requires at least Coccinelle 0.2.4, lex or parse error otherwise
// Options: -no_includes -include_headers
@@ -49,5 +49,5 @@ pr << r.p;
@@

if int(ps[0].line) < int(pr[0].line) or (int(ps[0].line) == int(pr[0].line) and int(ps[0].column) < int(pr[0].column)):
- msg = "%s: first occurrence %s, second occurrence %s" % (fld,ps[0].line,pr[0].line)
+ msg = "%s: first occurrence line %s, second occurrence line %s" % (fld,ps[0].line,pr[0].line)
coccilib.report.print_report(p0[0],msg)
diff --git a/var/linuxes/linux-next/scripts/coccinelle/null/eno.cocci b/var/julia/linuxcopy/scripts/coccinelle/null/eno.cocci
index 4c9c52b..ed961a1 100644
--- a/var/linuxes/linux-next/scripts/coccinelle/null/eno.cocci
+++ b/var/julia/linuxcopy/scripts/coccinelle/null/eno.cocci
@@ -1,16 +1,19 @@
/// The various basic memory allocation functions don't return ERR_PTR
///
// Confidence: High
-// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
-// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
-// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
+// 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;
@@

@@ -18,3 +21,28 @@ x = \(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|kmem_cache
... 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)


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