Piteball
/
android_kernel_samsung_msm8976
mirror of https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
1
1
Fork 0
Code Issues Projects Releases Wiki Activity

scripts/coccinelle: improve the coverage of some semantic patches 

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>
Signed-off-by: Michal Marek <mmarek@suse.cz>
This commit is contained in:
Julia Lawall 2012-01-14 23:41:54 +01:00 committed by Michal Marek
parent fb3f8af4ff
commit 29a36d4dec
11 changed files with 351 additions and 76 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

75
scripts/coccinelle/api/kstrdup.cocci
View File

@ -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)

34
scripts/coccinelle/api/memdup.cocci
View File

@ -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")

39
scripts/coccinelle/api/memdup_user.cocci
View File

@ -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")

14
scripts/coccinelle/free/kfree.cocci
View File

@ -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;
@ -36,6 +36,10 @@ identifier f;
E@p == E2
|
E@p != E2
|
E2 == E@p
|
E2 != 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)

73
scripts/coccinelle/iterators/fen.cocci
View File

@ -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)

54
scripts/coccinelle/iterators/itnull.cocci
View File

@ -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
+ )
)
...> }
...> }
@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)

67
scripts/coccinelle/locks/call_kern.cocci
View File

@ -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)

12
scripts/coccinelle/locks/flags.cocci
View File

@ -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)

15
scripts/coccinelle/locks/mini_lock.cocci
View File

@ -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;

8
scripts/coccinelle/misc/doubleinit.cocci
View File

@ -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)

36
scripts/coccinelle/null/eno.cocci
View File

@ -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)