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authorLinus Torvalds <torvalds@linux-foundation.org>2010-10-28 19:18:59 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-28 19:18:59 -0400
commite596c79050eafea89cf9fe26b7a807643a2a9904 (patch)
tree36a0c9b0d4cb149c2c5098be2257639631e5d6c6 /scripts
parent51399a391940e676877c7a791138081f13a0bab7 (diff)
parent9231d9e02a1f92b52bbb1e4474bfd1903835a993 (diff)
Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6
* 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6: (39 commits) Revert "namespace: add source file location exceptions" Coccinelle: Add contextual message Coccinelle: Fix documentation Coccinelle: Find doubled arguments to boolean or bit operators. Coccinelle: Find nested lock+irqsave functions that use the same flags variables. namespace: add source file location exceptions scripts/extract-ikconfig: add support for bzip2, lzma and lzo kbuild: check return value of asprintf() scripts/namespace.pl: improve to get more correct results scripts/namespace.pl: some bug fixes scripts/namespace.pl: update file exclusion list scripts/namespace.pl: fix wrong source path Coccinelle: Use the -no_show_diff option for org and report mode Coccinelle: Add a new mode named 'chain' Coccinelle: Use new comment format to explain kfree.cocci Coccinelle: Improve user information with a new kind of comment Coccinelle: Update documentation MAINTAINERS: Coccinelle: Update email address Documentation/kbuild: modules.txt cleanup Documentation/kbuild: major edit of modules.txt sections 5-8 ...
Diffstat (limited to 'scripts')
-rw-r--r--scripts/basic/docproc.c5
-rwxr-xr-xscripts/coccicheck46
-rw-r--r--scripts/coccinelle/api/alloc/drop_kmalloc_cast.cocci (renamed from scripts/coccinelle/alloc/drop_kmalloc_cast.cocci)0
-rw-r--r--scripts/coccinelle/api/alloc/kzalloc-simple.cocci (renamed from scripts/coccinelle/alloc/kzalloc-simple.cocci)6
-rw-r--r--scripts/coccinelle/api/err_cast.cocci (renamed from scripts/coccinelle/err_cast.cocci)0
-rw-r--r--scripts/coccinelle/api/kstrdup.cocci39
-rw-r--r--scripts/coccinelle/api/memdup.cocci40
-rw-r--r--scripts/coccinelle/api/memdup_user.cocci35
-rw-r--r--scripts/coccinelle/api/resource_size.cocci (renamed from scripts/coccinelle/resource_size.cocci)0
-rw-r--r--scripts/coccinelle/free/kfree.cocci117
-rw-r--r--scripts/coccinelle/iterators/fen.cocci64
-rw-r--r--scripts/coccinelle/iterators/itnull.cocci58
-rw-r--r--scripts/coccinelle/iterators/list_entry_update.cocci62
-rw-r--r--scripts/coccinelle/locks/call_kern.cocci74
-rw-r--r--scripts/coccinelle/locks/double_lock.cocci92
-rw-r--r--scripts/coccinelle/locks/flags.cocci80
-rw-r--r--scripts/coccinelle/locks/mini_lock.cocci95
-rw-r--r--scripts/coccinelle/misc/doubleinit.cocci53
-rw-r--r--scripts/coccinelle/misc/ifcol.cocci48
-rw-r--r--scripts/coccinelle/null/deref_null.cocci (renamed from scripts/coccinelle/deref_null.cocci)0
-rw-r--r--scripts/coccinelle/null/eno.cocci20
-rw-r--r--scripts/coccinelle/null/kmerr.cocci72
-rw-r--r--scripts/coccinelle/tests/doublebitand.cocci54
-rw-r--r--scripts/coccinelle/tests/doubletest.cocci40
-rwxr-xr-xscripts/extract-ikconfig41
-rwxr-xr-xscripts/namespace.pl147
26 files changed, 1196 insertions, 92 deletions
diff --git a/scripts/basic/docproc.c b/scripts/basic/docproc.c
index fc3b18d844af..98dec87974d0 100644
--- a/scripts/basic/docproc.c
+++ b/scripts/basic/docproc.c
@@ -333,7 +333,10 @@ static void docsect(char *filename, char *line)
333 if (*s == '\n') 333 if (*s == '\n')
334 *s = '\0'; 334 *s = '\0';
335 335
336 asprintf(&s, "DOC: %s", line); 336 if (asprintf(&s, "DOC: %s", line) < 0) {
337 perror("asprintf");
338 exit(1);
339 }
337 consume_symbol(s); 340 consume_symbol(s);
338 free(s); 341 free(s);
339 342
diff --git a/scripts/coccicheck b/scripts/coccicheck
index b8bcf1f7bed7..1bb1a1bd2daa 100755
--- a/scripts/coccicheck
+++ b/scripts/coccicheck
@@ -16,6 +16,7 @@ if [ "$C" = "1" -o "$C" = "2" ]; then
16else 16else
17 ONLINE=0 17 ONLINE=0
18 FLAGS="-very_quiet" 18 FLAGS="-very_quiet"
19 OPTIONS="-dir $srctree"
19fi 20fi
20 21
21if [ ! -x "$SPATCH" ]; then 22if [ ! -x "$SPATCH" ]; then
@@ -25,11 +26,13 @@ fi
25 26
26if [ "$MODE" = "" ] ; then 27if [ "$MODE" = "" ] ; then
27 if [ "$ONLINE" = "0" ] ; then 28 if [ "$ONLINE" = "0" ] ; then
28 echo 'You have not explicitly specify the mode to use. Fallback to "report".' 29 echo 'You have not explicitly specified the mode to use. Using default "chain" mode.'
30 echo 'All available modes will be tried (in that order): patch, report, context, org'
29 echo 'You can specify the mode with "make coccicheck MODE=<mode>"' 31 echo 'You can specify the mode with "make coccicheck MODE=<mode>"'
30 echo 'Available modes are: report, patch, context, org'
31 fi 32 fi
32 MODE="report" 33 MODE="chain"
34elif [ "$MODE" = "report" -o "$MODE" = "org" ] ; then
35 FLAGS="$FLAGS -no_show_diff"
33fi 36fi
34 37
35if [ "$ONLINE" = "0" ] ; then 38if [ "$ONLINE" = "0" ] ; then
@@ -44,7 +47,7 @@ coccinelle () {
44 47
45 OPT=`grep "Option" $COCCI | cut -d':' -f2` 48 OPT=`grep "Option" $COCCI | cut -d':' -f2`
46 49
47# The option '-parse_cocci' can be used to syntaxically check the SmPL files. 50# The option '-parse_cocci' can be used to syntactically check the SmPL files.
48# 51#
49# $SPATCH -D $MODE $FLAGS -parse_cocci $COCCI $OPT > /dev/null 52# $SPATCH -D $MODE $FLAGS -parse_cocci $COCCI $OPT > /dev/null
50 53
@@ -52,21 +55,44 @@ coccinelle () {
52 55
53 FILE=`echo $COCCI | sed "s|$srctree/||"` 56 FILE=`echo $COCCI | sed "s|$srctree/||"`
54 57
55 echo "Processing `basename $COCCI` with option(s) \"$OPT\"" 58 echo "Processing `basename $COCCI`"
59 echo "with option(s) \"$OPT\""
60 echo ''
56 echo 'Message example to submit a patch:' 61 echo 'Message example to submit a patch:'
57 62
58 sed -e '/\/\/\//!d' -e 's|^///||' $COCCI 63 sed -ne 's|^///||p' $COCCI
59 64
60 echo ' The semantic patch that makes this change is available' 65 if [ "$MODE" = "patch" ] ; then
66 echo ' The semantic patch that makes this change is available'
67 elif [ "$MODE" = "report" ] ; then
68 echo ' The semantic patch that makes this report is available'
69 elif [ "$MODE" = "context" ] ; then
70 echo ' The semantic patch that spots this code is available'
71 elif [ "$MODE" = "org" ] ; then
72 echo ' The semantic patch that makes this Org report is available'
73 else
74 echo ' The semantic patch that makes this output is available'
75 fi
61 echo " in $FILE." 76 echo " in $FILE."
62 echo '' 77 echo ''
63 echo ' More information about semantic patching is available at' 78 echo ' More information about semantic patching is available at'
64 echo ' http://coccinelle.lip6.fr/' 79 echo ' http://coccinelle.lip6.fr/'
65 echo '' 80 echo ''
66 81
67 $SPATCH -D $MODE $FLAGS -sp_file $COCCI $OPT -dir $srctree || exit 1 82 if [ "`sed -ne 's|^//#||p' $COCCI`" ] ; then
83 echo 'Semantic patch information:'
84 sed -ne 's|^//#||p' $COCCI
85 echo ''
86 fi
87 fi
88
89 if [ "$MODE" = "chain" ] ; then
90 $SPATCH -D patch $FLAGS -sp_file $COCCI $OPT $OPTIONS || \
91 $SPATCH -D report $FLAGS -sp_file $COCCI $OPT $OPTIONS -no_show_diff || \
92 $SPATCH -D context $FLAGS -sp_file $COCCI $OPT $OPTIONS || \
93 $SPATCH -D org $FLAGS -sp_file $COCCI $OPT $OPTIONS -no_show_diff || exit 1
68 else 94 else
69 $SPATCH -D $MODE $FLAGS -sp_file $COCCI $OPT $OPTIONS || exit 1 95 $SPATCH -D $MODE $FLAGS -sp_file $COCCI $OPT $OPTIONS || exit 1
70 fi 96 fi
71 97
72} 98}
diff --git a/scripts/coccinelle/alloc/drop_kmalloc_cast.cocci b/scripts/coccinelle/api/alloc/drop_kmalloc_cast.cocci
index 7d4771d449c3..7d4771d449c3 100644
--- a/scripts/coccinelle/alloc/drop_kmalloc_cast.cocci
+++ b/scripts/coccinelle/api/alloc/drop_kmalloc_cast.cocci
diff --git a/scripts/coccinelle/alloc/kzalloc-simple.cocci b/scripts/coccinelle/api/alloc/kzalloc-simple.cocci
index 2eae828fc657..046b9b16f8f9 100644
--- a/scripts/coccinelle/alloc/kzalloc-simple.cocci
+++ b/scripts/coccinelle/api/alloc/kzalloc-simple.cocci
@@ -1,5 +1,9 @@
1/// 1///
2/// kzalloc should be used rather than kmalloc followed by memset 0 2/// Use kzalloc rather than kmalloc followed by memset with 0
3///
4/// This considers some simple cases that are common and easy to validate
5/// Note in particular that there are no ...s in the rule, so all of the
6/// matched code has to be contiguous
3/// 7///
4// Confidence: High 8// Confidence: High
5// Copyright: (C) 2009-2010 Julia Lawall, Nicolas Palix, DIKU. GPLv2. 9// Copyright: (C) 2009-2010 Julia Lawall, Nicolas Palix, DIKU. GPLv2.
diff --git a/scripts/coccinelle/err_cast.cocci b/scripts/coccinelle/api/err_cast.cocci
index 2ce115000af6..2ce115000af6 100644
--- a/scripts/coccinelle/err_cast.cocci
+++ b/scripts/coccinelle/api/err_cast.cocci
diff --git a/scripts/coccinelle/api/kstrdup.cocci b/scripts/coccinelle/api/kstrdup.cocci
new file mode 100644
index 000000000000..e0805ad08d39
--- /dev/null
+++ b/scripts/coccinelle/api/kstrdup.cocci
@@ -0,0 +1,39 @@
1/// Use kstrdup rather than duplicating its implementation
2///
3// Confidence: High
4// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
5// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
6// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
7// URL: http://coccinelle.lip6.fr/
8// Comments:
9// Options: -no_includes -include_headers
10
11virtual patch
12
13@@
14expression from,to;
15expression flag,E1,E2;
16statement S;
17@@
18
19- to = kmalloc(strlen(from) + 1,flag);
20+ to = kstrdup(from, flag);
21 ... when != \(from = E1 \| to = E1 \)
22 if (to==NULL || ...) S
23 ... when != \(from = E2 \| to = E2 \)
24- strcpy(to, from);
25
26@@
27expression x,from,to;
28expression flag,E1,E2,E3;
29statement S;
30@@
31
32- x = strlen(from) + 1;
33 ... when != \( x = E1 \| from = E1 \)
34- to = \(kmalloc\|kzalloc\)(x,flag);
35+ to = kstrdup(from, flag);
36 ... when != \(x = E2 \| from = E2 \| to = E2 \)
37 if (to==NULL || ...) S
38 ... when != \(x = E3 \| from = E3 \| to = E3 \)
39- memcpy(to, from, x);
diff --git a/scripts/coccinelle/api/memdup.cocci b/scripts/coccinelle/api/memdup.cocci
new file mode 100644
index 000000000000..b5d722077dc1
--- /dev/null
+++ b/scripts/coccinelle/api/memdup.cocci
@@ -0,0 +1,40 @@
1/// Use kmemdup rather than duplicating its implementation
2///
3// Confidence: High
4// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
5// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
6// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
7// URL: http://coccinelle.lip6.fr/
8// Comments:
9// Options: -no_includes -include_headers
10
11virtual patch
12
13@r1@
14expression from,to;
15expression flag;
16position p;
17@@
18
19 to = \(kmalloc@p\|kzalloc@p\)(strlen(from) + 1,flag);
20
21@r2@
22expression x,from,to;
23expression flag,E1;
24position p;
25@@
26
27 x = strlen(from) + 1;
28 ... when != \( x = E1 \| from = E1 \)
29 to = \(kmalloc@p\|kzalloc@p\)(x,flag);
30
31@@
32expression from,to,size,flag;
33position p != {r1.p,r2.p};
34statement S;
35@@
36
37- to = \(kmalloc@p\|kzalloc@p\)(size,flag);
38+ to = kmemdup(from,size,flag);
39 if (to==NULL || ...) S
40- memcpy(to, from, size);
diff --git a/scripts/coccinelle/api/memdup_user.cocci b/scripts/coccinelle/api/memdup_user.cocci
new file mode 100644
index 000000000000..72ce012e878a
--- /dev/null
+++ b/scripts/coccinelle/api/memdup_user.cocci
@@ -0,0 +1,35 @@
1/// Use kmemdup_user rather than duplicating its implementation
2/// This is a little bit restricted to reduce false positives
3///
4// Confidence: High
5// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
6// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
7// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
8// URL: http://coccinelle.lip6.fr/
9// Comments:
10// Options: -no_includes -include_headers
11
12virtual patch
13
14@@
15expression from,to,size,flag;
16position p;
17identifier l1,l2;
18@@
19
20- to = \(kmalloc@p\|kzalloc@p\)(size,flag);
21+ to = memdup_user(from,size);
22 if (
23- to==NULL
24+ IS_ERR(to)
25 || ...) {
26 <+... when != goto l1;
27- -ENOMEM
28+ PTR_ERR(to)
29 ...+>
30 }
31- if (copy_from_user(to, from, size) != 0) {
32- <+... when != goto l2;
33- -EFAULT
34- ...+>
35- }
diff --git a/scripts/coccinelle/resource_size.cocci b/scripts/coccinelle/api/resource_size.cocci
index 1935a58b39d9..1935a58b39d9 100644
--- a/scripts/coccinelle/resource_size.cocci
+++ b/scripts/coccinelle/api/resource_size.cocci
diff --git a/scripts/coccinelle/free/kfree.cocci b/scripts/coccinelle/free/kfree.cocci
new file mode 100644
index 000000000000..f9f79d9245ee
--- /dev/null
+++ b/scripts/coccinelle/free/kfree.cocci
@@ -0,0 +1,117 @@
1/// Find a use after free.
2//# Values of variables may imply that some
3//# execution paths are not possible, resulting in false positives.
4//# Another source of false positives are macros such as
5//# SCTP_DBG_OBJCNT_DEC that do not actually evaluate their argument
6///
7// Confidence: Moderate
8// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
9// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
10// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
11// URL: http://coccinelle.lip6.fr/
12// Comments:
13// Options: -no_includes -include_headers
14
15virtual org
16virtual report
17
18@free@
19expression E;
20position p1;
21@@
22
23kfree@p1(E)
24
25@print expression@
26constant char *c;
27expression free.E,E2;
28type T;
29position p;
30identifier f;
31@@
32
33(
34 f(...,c,...,(T)E@p,...)
35|
36 E@p == E2
37|
38 E@p != E2
39|
40 !E@p
41|
42 E@p || ...
43)
44
45@sz@
46expression free.E;
47position p;
48@@
49
50 sizeof(<+...E@p...+>)
51
52@loop exists@
53expression E;
54identifier l;
55position ok;
56@@
57
58while (1) { ...
59 kfree@ok(E)
60 ... when != break;
61 when != goto l;
62 when forall
63}
64
65@r exists@
66expression free.E, subE<=free.E, E2;
67expression E1;
68iterator iter;
69statement S;
70position free.p1!=loop.ok,p2!={print.p,sz.p};
71@@
72
73kfree@p1(E,...)
74...
75(
76 iter(...,subE,...) S // no use
77|
78 list_remove_head(E1,subE,...)
79|
80 subE = E2
81|
82 subE++
83|
84 ++subE
85|
86 --subE
87|
88 subE--
89|
90 &subE
91|
92 BUG(...)
93|
94 BUG_ON(...)
95|
96 return_VALUE(...)
97|
98 return_ACPI_STATUS(...)
99|
100 E@p2 // bad use
101)
102
103@script:python depends on org@
104p1 << free.p1;
105p2 << r.p2;
106@@
107
108cocci.print_main("kfree",p1)
109cocci.print_secs("ref",p2)
110
111@script:python depends on report@
112p1 << free.p1;
113p2 << r.p2;
114@@
115
116msg = "reference preceded by free on line %s" % (p1[0].line)
117coccilib.report.print_report(p2[0],msg)
diff --git a/scripts/coccinelle/iterators/fen.cocci b/scripts/coccinelle/iterators/fen.cocci
new file mode 100644
index 000000000000..77bc108c3f59
--- /dev/null
+++ b/scripts/coccinelle/iterators/fen.cocci
@@ -0,0 +1,64 @@
1/// These iterators only exit normally when the loop cursor is NULL, so there
2/// is no point to call of_node_put on the final value.
3///
4// Confidence: High
5// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
6// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
7// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
8// URL: http://coccinelle.lip6.fr/
9// Comments:
10// Options: -no_includes -include_headers
11
12virtual patch
13
14@@
15iterator name for_each_node_by_name;
16expression np,E;
17identifier l;
18@@
19
20for_each_node_by_name(np,...) {
21 ... when != break;
22 when != goto l;
23}
24... when != np = E
25- of_node_put(np);
26
27@@
28iterator name for_each_node_by_type;
29expression np,E;
30identifier l;
31@@
32
33for_each_node_by_type(np,...) {
34 ... when != break;
35 when != goto l;
36}
37... when != np = E
38- of_node_put(np);
39
40@@
41iterator name for_each_compatible_node;
42expression np,E;
43identifier l;
44@@
45
46for_each_compatible_node(np,...) {
47 ... when != break;
48 when != goto l;
49}
50... when != np = E
51- of_node_put(np);
52
53@@
54iterator name for_each_matching_node;
55expression np,E;
56identifier l;
57@@
58
59for_each_matching_node(np,...) {
60 ... when != break;
61 when != goto l;
62}
63... when != np = E
64- of_node_put(np);
diff --git a/scripts/coccinelle/iterators/itnull.cocci b/scripts/coccinelle/iterators/itnull.cocci
new file mode 100644
index 000000000000..baa4297a4ed1
--- /dev/null
+++ b/scripts/coccinelle/iterators/itnull.cocci
@@ -0,0 +1,58 @@
1/// Many iterators have the property that the first argument is always bound
2/// to a real list element, never NULL. False positives arise for some
3/// iterators that do not have this property, or in cases when the loop
4/// cursor is reassigned. The latter should only happen when the matched
5/// code is on the way to a loop exit (break, goto, or return).
6///
7// Confidence: Moderate
8// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
9// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
10// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
11// URL: http://coccinelle.lip6.fr/
12// Comments:
13// Options: -no_includes -include_headers
14
15virtual patch
16
17@@
18iterator I;
19expression x,E,E1,E2;
20statement S,S1,S2;
21@@
22
23I(x,...) { <...
24(
25- if (x == NULL && ...) S
26|
27- if (x != NULL || ...)
28 S
29|
30- (x == NULL) ||
31 E
32|
33- (x != NULL) &&
34 E
35|
36- (x == NULL && ...) ? E1 :
37 E2
38|
39- (x != NULL || ...) ?
40 E1
41- : E2
42|
43- if (x == NULL && ...) S1 else
44 S2
45|
46- if (x != NULL || ...)
47 S1
48- else S2
49|
50+ BAD(
51 x == NULL
52+ )
53|
54+ BAD(
55 x != NULL
56+ )
57)
58 ...> } \ No newline at end of file
diff --git a/scripts/coccinelle/iterators/list_entry_update.cocci b/scripts/coccinelle/iterators/list_entry_update.cocci
new file mode 100644
index 000000000000..b2967475679b
--- /dev/null
+++ b/scripts/coccinelle/iterators/list_entry_update.cocci
@@ -0,0 +1,62 @@
1/// list_for_each_entry uses its first argument to get from one element of
2/// the list to the next, so it is usually not a good idea to reassign it.
3/// The first rule finds such a reassignment and the second rule checks
4/// that there is a path from the reassignment back to the top of the loop.
5///
6// Confidence: High
7// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
8// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
9// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
10// URL: http://coccinelle.lip6.fr/
11// Comments:
12// Options: -no_includes -include_headers
13
14virtual context
15virtual org
16virtual report
17
18@r@
19iterator name list_for_each_entry;
20expression x,E;
21position p1,p2;
22@@
23
24list_for_each_entry@p1(x,...) { <... x =@p2 E ...> }
25
26@depends on context && !org && !report@
27expression x,E;
28position r.p1,r.p2;
29statement S;
30@@
31
32*x =@p2 E
33...
34list_for_each_entry@p1(x,...) S
35
36// ------------------------------------------------------------------------
37
38@back depends on (org || report) && !context exists@
39expression x,E;
40position r.p1,r.p2;
41statement S;
42@@
43
44x =@p2 E
45...
46list_for_each_entry@p1(x,...) S
47
48@script:python depends on back && org@
49p1 << r.p1;
50p2 << r.p2;
51@@
52
53cocci.print_main("iterator",p1)
54cocci.print_secs("update",p2)
55
56@script:python depends on back && report@
57p1 << r.p1;
58p2 << r.p2;
59@@
60
61msg = "iterator with update on line %s" % (p2[0].line)
62coccilib.report.print_report(p1[0],msg)
diff --git a/scripts/coccinelle/locks/call_kern.cocci b/scripts/coccinelle/locks/call_kern.cocci
new file mode 100644
index 000000000000..00af5344a68f
--- /dev/null
+++ b/scripts/coccinelle/locks/call_kern.cocci
@@ -0,0 +1,74 @@
1/// Find functions that refer to GFP_KERNEL but are called with locks held.
2/// The proposed change of converting the GFP_KERNEL is not necessarily the
3/// correct one. It may be desired to unlock the lock, or to not call the
4/// function under the lock in the first place.
5///
6// Confidence: Moderate
7// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
8// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
9// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
10// URL: http://coccinelle.lip6.fr/
11// Comments:
12// Options: -no_includes -include_headers
13
14virtual patch
15
16@gfp exists@
17identifier fn;
18position p;
19@@
20
21fn(...) {
22 ... when != read_unlock_irq(...)
23 when != write_unlock_irq(...)
24 when != read_unlock_irqrestore(...)
25 when != write_unlock_irqrestore(...)
26 when != spin_unlock(...)
27 when != spin_unlock_irq(...)
28 when != spin_unlock_irqrestore(...)
29 when != local_irq_enable(...)
30 when any
31 GFP_KERNEL@p
32 ... when any
33}
34
35@locked@
36identifier gfp.fn;
37@@
38
39(
40read_lock_irq
41|
42write_lock_irq
43|
44read_lock_irqsave
45|
46write_lock_irqsave
47|
48spin_lock
49|
50spin_trylock
51|
52spin_lock_irq
53|
54spin_lock_irqsave
55|
56local_irq_disable
57)
58 (...)
59... when != read_unlock_irq(...)
60 when != write_unlock_irq(...)
61 when != read_unlock_irqrestore(...)
62 when != write_unlock_irqrestore(...)
63 when != spin_unlock(...)
64 when != spin_unlock_irq(...)
65 when != spin_unlock_irqrestore(...)
66 when != local_irq_enable(...)
67fn(...)
68
69@depends on locked@
70position gfp.p;
71@@
72
73- GFP_KERNEL@p
74+ GFP_ATOMIC
diff --git a/scripts/coccinelle/locks/double_lock.cocci b/scripts/coccinelle/locks/double_lock.cocci
new file mode 100644
index 000000000000..63b24e682fad
--- /dev/null
+++ b/scripts/coccinelle/locks/double_lock.cocci
@@ -0,0 +1,92 @@
1/// Find double locks. False positives may occur when some paths cannot
2/// occur at execution, due to the values of variables, and when there is
3/// an intervening function call that releases the lock.
4///
5// Confidence: Moderate
6// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
7// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
8// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
9// URL: http://coccinelle.lip6.fr/
10// Comments:
11// Options: -no_includes -include_headers
12
13virtual org
14virtual report
15
16@locked@
17position p1;
18expression E1;
19position p;
20@@
21
22(
23mutex_lock@p1
24|
25mutex_trylock@p1
26|
27spin_lock@p1
28|
29spin_trylock@p1
30|
31read_lock@p1
32|
33read_trylock@p1
34|
35write_lock@p1
36|
37write_trylock@p1
38) (E1@p,...);
39
40@balanced@
41position p1 != locked.p1;
42position locked.p;
43identifier lock,unlock;
44expression x <= locked.E1;
45expression E,locked.E1;
46expression E2;
47@@
48
49if (E) {
50 <+... when != E1
51 lock(E1@p,...)
52 ...+>
53}
54... when != E1
55 when != \(x = E2\|&x\)
56 when forall
57if (E) {
58 <+... when != E1
59 unlock@p1(E1,...)
60 ...+>
61}
62
63@r depends on !balanced exists@
64expression x <= locked.E1;
65expression locked.E1;
66expression E2;
67identifier lock;
68position locked.p,p1,p2;
69@@
70
71lock@p1 (E1@p,...);
72... when != E1
73 when != \(x = E2\|&x\)
74lock@p2 (E1,...);
75
76@script:python depends on org@
77p1 << r.p1;
78p2 << r.p2;
79lock << r.lock;
80@@
81
82cocci.print_main(lock,p1)
83cocci.print_secs("second lock",p2)
84
85@script:python depends on report@
86p1 << r.p1;
87p2 << r.p2;
88lock << r.lock;
89@@
90
91msg = "second lock on line %s" % (p2[0].line)
92coccilib.report.print_report(p1[0],msg)
diff --git a/scripts/coccinelle/locks/flags.cocci b/scripts/coccinelle/locks/flags.cocci
new file mode 100644
index 000000000000..b4344d838097
--- /dev/null
+++ b/scripts/coccinelle/locks/flags.cocci
@@ -0,0 +1,80 @@
1/// Find nested lock+irqsave functions that use the same flags variables
2///
3// Confidence: High
4// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
5// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
6// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
7// URL: http://coccinelle.lip6.fr/
8// Comments:
9// Options: -no_includes -include_headers
10
11virtual context
12virtual org
13virtual report
14
15@r@
16expression lock1,lock2,flags;
17position p1,p2;
18@@
19
20(
21spin_lock_irqsave@p1(lock1,flags)
22|
23read_lock_irqsave@p1(lock1,flags)
24|
25write_lock_irqsave@p1(lock1,flags)
26)
27... when != flags
28(
29spin_lock_irqsave(lock1,flags)
30|
31read_lock_irqsave(lock1,flags)
32|
33write_lock_irqsave(lock1,flags)
34|
35spin_lock_irqsave@p2(lock2,flags)
36|
37read_lock_irqsave@p2(lock2,flags)
38|
39write_lock_irqsave@p2(lock2,flags)
40)
41
42@d@
43expression f <= r.flags;
44expression lock1,lock2,flags;
45position r.p1, r.p2;
46@@
47
48(
49*spin_lock_irqsave@p1(lock1,flags)
50|
51*read_lock_irqsave@p1(lock1,flags)
52|
53*write_lock_irqsave@p1(lock1,flags)
54)
55... when != f
56(
57*spin_lock_irqsave@p2(lock2,flags)
58|
59*read_lock_irqsave@p2(lock2,flags)
60|
61*write_lock_irqsave@p2(lock2,flags)
62)
63
64// ----------------------------------------------------------------------
65
66@script:python depends on d && org@
67p1 << r.p1;
68p2 << r.p2;
69@@
70
71cocci.print_main("original lock",p1)
72cocci.print_secs("nested lock+irqsave that reuses flags",p2)
73
74@script:python depends on d && report@
75p1 << r.p1;
76p2 << r.p2;
77@@
78
79msg="ERROR: nested lock+irqsave that reuses flags from %s." % (p1[0].line)
80coccilib.report.print_report(p2[0], msg)
diff --git a/scripts/coccinelle/locks/mini_lock.cocci b/scripts/coccinelle/locks/mini_lock.cocci
new file mode 100644
index 000000000000..7641a2925434
--- /dev/null
+++ b/scripts/coccinelle/locks/mini_lock.cocci
@@ -0,0 +1,95 @@
1/// Find missing unlocks. This semantic match considers the specific case
2/// where the unlock is missing from an if branch, and there is a lock
3/// before the if and an unlock after the if. False positives are due to
4/// cases where the if branch represents a case where the function is
5/// supposed to exit with the lock held, or where there is some preceding
6/// function call that releases the lock.
7///
8// Confidence: Moderate
9// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
10// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
11// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
12// URL: http://coccinelle.lip6.fr/
13// Comments:
14// Options: -no_includes -include_headers
15
16virtual org
17virtual report
18
19@prelocked@
20position p1,p;
21expression E1;
22@@
23
24(
25mutex_lock@p1
26|
27mutex_trylock@p1
28|
29spin_lock@p1
30|
31spin_trylock@p1
32|
33read_lock@p1
34|
35read_trylock@p1
36|
37write_lock@p1
38|
39write_trylock@p1
40|
41read_lock_irq@p1
42|
43write_lock_irq@p1
44|
45read_lock_irqsave@p1
46|
47write_lock_irqsave@p1
48|
49spin_lock_irq@p1
50|
51spin_lock_irqsave@p1
52) (E1@p,...);
53
54@looped@
55position r;
56@@
57
58for(...;...;...) { <+... return@r ...; ...+> }
59
60@err@
61expression E1;
62position prelocked.p;
63position up != prelocked.p1;
64position r!=looped.r;
65identifier lock,unlock;
66@@
67
68lock(E1@p,...);
69<+... when != E1
70if (...) {
71 ... when != E1
72 return@r ...;
73}
74...+>
75unlock@up(E1,...);
76
77@script:python depends on org@
78p << prelocked.p1;
79lock << err.lock;
80unlock << err.unlock;
81p2 << err.r;
82@@
83
84cocci.print_main(lock,p)
85cocci.print_secs(unlock,p2)
86
87@script:python depends on report@
88p << prelocked.p1;
89lock << err.lock;
90unlock << err.unlock;
91p2 << err.r;
92@@
93
94msg = "preceding lock on line %s" % (p[0].line)
95coccilib.report.print_report(p2[0],msg)
diff --git a/scripts/coccinelle/misc/doubleinit.cocci b/scripts/coccinelle/misc/doubleinit.cocci
new file mode 100644
index 000000000000..55d7dc19dfe0
--- /dev/null
+++ b/scripts/coccinelle/misc/doubleinit.cocci
@@ -0,0 +1,53 @@
1/// Find duplicate field initializations. This has a high rate of false
2/// positives due to #ifdefs, which Coccinelle is not aware of in a structure
3/// initialization.
4///
5// Confidence: Low
6// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
7// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
8// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
9// URL: http://coccinelle.lip6.fr/
10// Comments:
11// Options: -no_includes -include_headers
12
13virtual org
14virtual report
15
16@r@
17identifier I, s, fld;
18position p0,p;
19expression E;
20@@
21
22struct I s =@p0 { ... .fld@p = E, ...};
23
24@s@
25identifier I, s, r.fld;
26position r.p0,p;
27expression E;
28@@
29
30struct I s =@p0 { ... .fld@p = E, ...};
31
32@script:python depends on org@
33p0 << r.p0;
34fld << r.fld;
35ps << s.p;
36pr << r.p;
37@@
38
39if 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)):
40 cocci.print_main(fld,p0)
41 cocci.print_secs("s",ps)
42 cocci.print_secs("r",pr)
43
44@script:python depends on report@
45p0 << r.p0;
46fld << r.fld;
47ps << s.p;
48pr << r.p;
49@@
50
51if 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)):
52 msg = "%s: first occurrence %s, second occurrence %s" % (fld,ps[0].line,pr[0].line)
53 coccilib.report.print_report(p0[0],msg)
diff --git a/scripts/coccinelle/misc/ifcol.cocci b/scripts/coccinelle/misc/ifcol.cocci
new file mode 100644
index 000000000000..b7ed91dbeb95
--- /dev/null
+++ b/scripts/coccinelle/misc/ifcol.cocci
@@ -0,0 +1,48 @@
1/// Find confusingly indented code in or after an if. An if branch should
2/// be indented. The code following an if should not be indented.
3/// Sometimes, code after an if that is indented is actually intended to be
4/// part of the if branch.
5///
6/// This has a high rate of false positives, because Coccinelle's column
7/// calculation does not distinguish between spaces and tabs, so code that
8/// is not visually aligned may be considered to be in the same column.
9///
10// Confidence: Low
11// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
12// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
13// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
14// URL: http://coccinelle.lip6.fr/
15// Comments:
16// Options: -no_includes -include_headers
17
18virtual org
19virtual report
20
21@r disable braces4@
22position p1,p2;
23statement S1,S2;
24@@
25
26(
27if (...) { ... }
28|
29if (...) S1@p1 S2@p2
30)
31
32@script:python depends on org@
33p1 << r.p1;
34p2 << r.p2;
35@@
36
37if (p1[0].column == p2[0].column):
38 cocci.print_main("branch",p1)
39 cocci.print_secs("after",p2)
40
41@script:python depends on report@
42p1 << r.p1;
43p2 << r.p2;
44@@
45
46if (p1[0].column == p2[0].column):
47 msg = "code aligned with following code on line %s" % (p2[0].line)
48 coccilib.report.print_report(p1[0],msg)
diff --git a/scripts/coccinelle/deref_null.cocci b/scripts/coccinelle/null/deref_null.cocci
index 9969d76d0f4b..9969d76d0f4b 100644
--- a/scripts/coccinelle/deref_null.cocci
+++ b/scripts/coccinelle/null/deref_null.cocci
diff --git a/scripts/coccinelle/null/eno.cocci b/scripts/coccinelle/null/eno.cocci
new file mode 100644
index 000000000000..4c9c52b9c413
--- /dev/null
+++ b/scripts/coccinelle/null/eno.cocci
@@ -0,0 +1,20 @@
1/// The various basic memory allocation functions don't return ERR_PTR
2///
3// Confidence: High
4// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
5// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
6// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
7// URL: http://coccinelle.lip6.fr/
8// Comments:
9// Options: -no_includes -include_headers
10
11virtual patch
12
13@@
14expression x,E;
15@@
16
17x = \(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\)(...)
18... when != x = E
19- IS_ERR(x)
20+ !x
diff --git a/scripts/coccinelle/null/kmerr.cocci b/scripts/coccinelle/null/kmerr.cocci
new file mode 100644
index 000000000000..949bf656c64c
--- /dev/null
+++ b/scripts/coccinelle/null/kmerr.cocci
@@ -0,0 +1,72 @@
1/// This semantic patch looks for kmalloc etc that are not followed by a
2/// NULL check. It only gives a report in the case where there is some
3/// error handling code later in the function, which may be helpful
4/// in determining what the error handling code for the call to kmalloc etc
5/// should be.
6///
7// Confidence: High
8// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
9// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
10// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
11// URL: http://coccinelle.lip6.fr/
12// Comments:
13// Options: -no_includes -include_headers
14
15virtual context
16virtual org
17virtual report
18
19@withtest@
20expression x;
21position p;
22identifier f,fld;
23@@
24
25x@p = f(...);
26... when != x->fld
27\(x == NULL \| x != NULL\)
28
29@fixed depends on context && !org && !report@
30expression x,x1;
31position p1 != withtest.p;
32statement S;
33position any withtest.p;
34identifier f;
35@@
36
37*x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...);
38...
39*x1@p = f(...);
40if (!x1) S
41
42// ------------------------------------------------------------------------
43
44@rfixed depends on (org || report) && !context exists@
45expression x,x1;
46position p1 != withtest.p;
47position p2;
48statement S;
49position any withtest.p;
50identifier f;
51@@
52
53x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...);
54...
55x1@p = f@p2(...);
56if (!x1) S
57
58@script:python depends on org@
59p1 << rfixed.p1;
60p2 << rfixed.p2;
61@@
62
63cocci.print_main("alloc call",p1)
64cocci.print_secs("possible model",p2)
65
66@script:python depends on report@
67p1 << rfixed.p1;
68p2 << rfixed.p2;
69@@
70
71msg = "alloc with no test, possible model on line %s" % (p2[0].line)
72coccilib.report.print_report(p1[0],msg)
diff --git a/scripts/coccinelle/tests/doublebitand.cocci b/scripts/coccinelle/tests/doublebitand.cocci
new file mode 100644
index 000000000000..9ba73d05a77e
--- /dev/null
+++ b/scripts/coccinelle/tests/doublebitand.cocci
@@ -0,0 +1,54 @@
1/// Find bit operations that include the same argument more than once
2//# One source of false positives is when the argument performs a side
3//# effect. Another source of false positives is when a neutral value
4//# such as 0 for | is used to indicate no information, to maintain the
5//# same structure as other similar expressions
6///
7// Confidence: Moderate
8// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
9// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
10// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
11// URL: http://coccinelle.lip6.fr/
12// Comments:
13// Options: -no_includes -include_headers
14
15virtual context
16virtual org
17virtual report
18
19@r expression@
20expression E;
21position p;
22@@
23
24(
25* E@p
26 & ... & E
27|
28* E@p
29 | ... | E
30|
31* E@p
32 & ... & !E
33|
34* E@p
35 | ... | !E
36|
37* !E@p
38 & ... & E
39|
40* !E@p
41 | ... | E
42)
43
44@script:python depends on org@
45p << r.p;
46@@
47
48cocci.print_main("duplicated argument to & or |",p)
49
50@script:python depends on report@
51p << r.p;
52@@
53
54coccilib.report.print_report(p[0],"duplicated argument to & or |")
diff --git a/scripts/coccinelle/tests/doubletest.cocci b/scripts/coccinelle/tests/doubletest.cocci
new file mode 100644
index 000000000000..13a2c0e8a4bf
--- /dev/null
+++ b/scripts/coccinelle/tests/doubletest.cocci
@@ -0,0 +1,40 @@
1/// Find &&/|| operations that include the same argument more than once
2//# A common source of false positives is when the argument performs a side
3//# effect.
4///
5// Confidence: Moderate
6// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
7// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
8// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
9// URL: http://coccinelle.lip6.fr/
10// Comments:
11// Options: -no_includes -include_headers
12
13virtual context
14virtual org
15virtual report
16
17@r expression@
18expression E;
19position p;
20@@
21
22(
23* E@p
24 || ... || E
25|
26* E@p
27 && ... && E
28)
29
30@script:python depends on org@
31p << r.p;
32@@
33
34cocci.print_main("duplicated argument to && or ||",p)
35
36@script:python depends on report@
37p << r.p;
38@@
39
40coccilib.report.print_report(p[0],"duplicated argument to && or ||")
diff --git a/scripts/extract-ikconfig b/scripts/extract-ikconfig
index 37f30d36c944..1512c0a755ac 100755
--- a/scripts/extract-ikconfig
+++ b/scripts/extract-ikconfig
@@ -7,12 +7,10 @@
7# The obscure use of the "tr" filter is to work around older versions of 7# The obscure use of the "tr" filter is to work around older versions of
8# "grep" that report the byte offset of the line instead of the pattern. 8# "grep" that report the byte offset of the line instead of the pattern.
9# 9#
10# (c) 2009, Dick Streefland <dick@streefland.net> 10# (c) 2009,2010 Dick Streefland <dick@streefland.net>
11# Licensed under the terms of the GNU General Public License. 11# Licensed under the terms of the GNU General Public License.
12# ---------------------------------------------------------------------- 12# ----------------------------------------------------------------------
13 13
14gz1='\037\213\010'
15gz2='01'
16cf1='IKCFG_ST\037\213\010' 14cf1='IKCFG_ST\037\213\010'
17cf2='0123456789' 15cf2='0123456789'
18 16
@@ -21,11 +19,25 @@ dump_config()
21 if pos=`tr "$cf1\n$cf2" "\n$cf2=" < "$1" | grep -abo "^$cf2"` 19 if pos=`tr "$cf1\n$cf2" "\n$cf2=" < "$1" | grep -abo "^$cf2"`
22 then 20 then
23 pos=${pos%%:*} 21 pos=${pos%%:*}
24 tail -c+$(($pos+8)) "$1" | zcat -q 22 tail -c+$(($pos+8)) "$1" | zcat > $tmp1 2> /dev/null
25 exit 0 23 if [ $? != 1 ]
24 then # exit status must be 0 or 2 (trailing garbage warning)
25 cat $tmp1
26 exit 0
27 fi
26 fi 28 fi
27} 29}
28 30
31try_decompress()
32{
33 for pos in `tr "$1\n$2" "\n$2=" < "$img" | grep -abo "^$2"`
34 do
35 pos=${pos%%:*}
36 tail -c+$pos "$img" | $3 > $tmp2 2> /dev/null
37 dump_config $tmp2
38 done
39}
40
29# Check invocation: 41# Check invocation:
30me=${0##*/} 42me=${0##*/}
31img=$1 43img=$1
@@ -35,18 +47,19 @@ then
35 exit 2 47 exit 2
36fi 48fi
37 49
50# Prepare temp files:
51tmp1=/tmp/ikconfig$$.1
52tmp2=/tmp/ikconfig$$.2
53trap "rm -f $tmp1 $tmp2" 0
54
38# Initial attempt for uncompressed images or objects: 55# Initial attempt for uncompressed images or objects:
39dump_config "$img" 56dump_config "$img"
40 57
41# That didn't work, so decompress and try again: 58# That didn't work, so retry after decompression.
42tmp=/tmp/ikconfig$$ 59try_decompress '\037\213\010' xy gunzip
43trap "rm -f $tmp" 0 60try_decompress 'BZh' xy bunzip2
44for pos in `tr "$gz1\n$gz2" "\n$gz2=" < "$img" | grep -abo "^$gz2"` 61try_decompress '\135\0\0\0' xxx unlzma
45do 62try_decompress '\211\114\132' xy 'lzop -d'
46 pos=${pos%%:*}
47 tail -c+$pos "$img" | zcat 2> /dev/null > $tmp
48 dump_config $tmp
49done
50 63
51# Bail out: 64# Bail out:
52echo "$me: Cannot find kernel config." >&2 65echo "$me: Cannot find kernel config." >&2
diff --git a/scripts/namespace.pl b/scripts/namespace.pl
index 361d0f71184b..a71be6b7cdec 100755
--- a/scripts/namespace.pl
+++ b/scripts/namespace.pl
@@ -84,6 +84,64 @@ my %ksymtab = (); # names that appear in __ksymtab_
84my %ref = (); # $ref{$name} exists if there is a true external reference to $name 84my %ref = (); # $ref{$name} exists if there is a true external reference to $name
85my %export = (); # $export{$name} exists if there is an EXPORT_... of $name 85my %export = (); # $export{$name} exists if there is an EXPORT_... of $name
86 86
87my %nmexception = (
88 'fs/ext3/bitmap' => 1,
89 'fs/ext4/bitmap' => 1,
90 'arch/x86/lib/thunk_32' => 1,
91 'arch/x86/lib/cmpxchg' => 1,
92 'arch/x86/vdso/vdso32/note' => 1,
93 'lib/irq_regs' => 1,
94 'usr/initramfs_data' => 1,
95 'drivers/scsi/aic94xx/aic94xx_dump' => 1,
96 'drivers/scsi/libsas/sas_dump' => 1,
97 'lib/dec_and_lock' => 1,
98 'drivers/ide/ide-probe-mini' => 1,
99 'usr/initramfs_data' => 1,
100 'drivers/acpi/acpia/exdump' => 1,
101 'drivers/acpi/acpia/rsdump' => 1,
102 'drivers/acpi/acpia/nsdumpdv' => 1,
103 'drivers/acpi/acpia/nsdump' => 1,
104 'arch/ia64/sn/kernel/sn2/io' => 1,
105 'arch/ia64/kernel/gate-data' => 1,
106 'security/capability' => 1,
107 'fs/ntfs/sysctl' => 1,
108 'fs/jfs/jfs_debug' => 1,
109);
110
111my %nameexception = (
112 'mod_use_count_' => 1,
113 '__initramfs_end' => 1,
114 '__initramfs_start' => 1,
115 '_einittext' => 1,
116 '_sinittext' => 1,
117 'kallsyms_names' => 1,
118 'kallsyms_num_syms' => 1,
119 'kallsyms_addresses'=> 1,
120 '__this_module' => 1,
121 '_etext' => 1,
122 '_edata' => 1,
123 '_end' => 1,
124 '__bss_start' => 1,
125 '_text' => 1,
126 '_stext' => 1,
127 '__gp' => 1,
128 'ia64_unw_start' => 1,
129 'ia64_unw_end' => 1,
130 '__init_begin' => 1,
131 '__init_end' => 1,
132 '__bss_stop' => 1,
133 '__nosave_begin' => 1,
134 '__nosave_end' => 1,
135 'pg0' => 1,
136 'vdso_enabled' => 1,
137 '__stack_chk_fail' => 1,
138 'VDSO32_PRELINK' => 1,
139 'VDSO32_vsyscall' => 1,
140 'VDSO32_rt_sigreturn'=>1,
141 'VDSO32_sigreturn' => 1,
142);
143
144
87&find(\&linux_objects, '.'); # find the objects and do_nm on them 145&find(\&linux_objects, '.'); # find the objects and do_nm on them
88&list_multiply_defined(); 146&list_multiply_defined();
89&resolve_external_references(); 147&resolve_external_references();
@@ -105,7 +163,8 @@ sub linux_objects
105 if (/.*\.o$/ && 163 if (/.*\.o$/ &&
106 ! ( 164 ! (
107 m:/built-in.o$: 165 m:/built-in.o$:
108 || m:arch/x86/kernel/vsyscall-syms.o$: 166 || m:arch/x86/vdso/:
167 || m:arch/x86/boot/:
109 || m:arch/ia64/ia32/ia32.o$: 168 || m:arch/ia64/ia32/ia32.o$:
110 || m:arch/ia64/kernel/gate-syms.o$: 169 || m:arch/ia64/kernel/gate-syms.o$:
111 || m:arch/ia64/lib/__divdi3.o$: 170 || m:arch/ia64/lib/__divdi3.o$:
@@ -148,6 +207,7 @@ sub linux_objects
148 || m:^.*/\.tmp_: 207 || m:^.*/\.tmp_:
149 || m:^\.tmp_: 208 || m:^\.tmp_:
150 || m:/vmlinux-obj.o$: 209 || m:/vmlinux-obj.o$:
210 || m:^tools/:
151 ) 211 )
152 ) { 212 ) {
153 do_nm($basename, $_); 213 do_nm($basename, $_);
@@ -167,11 +227,11 @@ sub do_nm
167 printf STDERR "$fullname is not an object file\n"; 227 printf STDERR "$fullname is not an object file\n";
168 return; 228 return;
169 } 229 }
170 ($source = $fullname) =~ s/\.o$//; 230 ($source = $basename) =~ s/\.o$//;
171 if (-e "$objtree$source.c" || -e "$objtree$source.S") { 231 if (-e "$source.c" || -e "$source.S") {
172 $source = "$objtree$source"; 232 $source = "$objtree$File::Find::dir/$source";
173 } else { 233 } else {
174 $source = "$srctree$source"; 234 $source = "$srctree$File::Find::dir/$source";
175 } 235 }
176 if (! -e "$source.c" && ! -e "$source.S") { 236 if (! -e "$source.c" && ! -e "$source.S") {
177 # No obvious source, exclude the object if it is conglomerate 237 # No obvious source, exclude the object if it is conglomerate
@@ -214,6 +274,7 @@ sub do_nm
214 # T global label/procedure 274 # T global label/procedure
215 # U external reference 275 # U external reference
216 # W weak external reference to text that has been resolved 276 # W weak external reference to text that has been resolved
277 # V similar to W, but the value of the weak symbol becomes zero with no error.
217 # a assembler equate 278 # a assembler equate
218 # b static variable, uninitialised 279 # b static variable, uninitialised
219 # d static variable, initialised 280 # d static variable, initialised
@@ -222,8 +283,9 @@ sub do_nm
222 # s static variable, uninitialised, small bss 283 # s static variable, uninitialised, small bss
223 # t static label/procedures 284 # t static label/procedures
224 # w weak external reference to text that has not been resolved 285 # w weak external reference to text that has not been resolved
286 # v similar to w
225 # ? undefined type, used a lot by modules 287 # ? undefined type, used a lot by modules
226 if ($type !~ /^[ABCDGRSTUWabdgrstw?]$/) { 288 if ($type !~ /^[ABCDGRSTUWVabdgrstwv?]$/) {
227 printf STDERR "nm output for $fullname contains unknown type '$_'\n"; 289 printf STDERR "nm output for $fullname contains unknown type '$_'\n";
228 } 290 }
229 elsif ($name =~ /\./) { 291 elsif ($name =~ /\./) {
@@ -234,7 +296,7 @@ sub do_nm
234 # binutils keeps changing the type for exported symbols, force it to R 296 # binutils keeps changing the type for exported symbols, force it to R
235 $type = 'R' if ($name =~ /^__ksymtab/ || $name =~ /^__kstrtab/); 297 $type = 'R' if ($name =~ /^__ksymtab/ || $name =~ /^__kstrtab/);
236 $name =~ s/_R[a-f0-9]{8}$//; # module versions adds this 298 $name =~ s/_R[a-f0-9]{8}$//; # module versions adds this
237 if ($type =~ /[ABCDGRSTW]/ && 299 if ($type =~ /[ABCDGRSTWV]/ &&
238 $name ne 'init_module' && 300 $name ne 'init_module' &&
239 $name ne 'cleanup_module' && 301 $name ne 'cleanup_module' &&
240 $name ne 'Using_Versions' && 302 $name ne 'Using_Versions' &&
@@ -270,27 +332,9 @@ sub do_nm
270 close($nmdata); 332 close($nmdata);
271 333
272 if ($#nmdata < 0) { 334 if ($#nmdata < 0) {
273 if ( 335 printf "No nm data for $fullname\n"
274 $fullname ne "lib/brlock.o" 336 unless $nmexception{$fullname};
275 && $fullname ne "lib/dec_and_lock.o" 337 return;
276 && $fullname ne "fs/xfs/xfs_macros.o"
277 && $fullname ne "drivers/ide/ide-probe-mini.o"
278 && $fullname ne "usr/initramfs_data.o"
279 && $fullname ne "drivers/acpi/executer/exdump.o"
280 && $fullname ne "drivers/acpi/resources/rsdump.o"
281 && $fullname ne "drivers/acpi/namespace/nsdumpdv.o"
282 && $fullname ne "drivers/acpi/namespace/nsdump.o"
283 && $fullname ne "arch/ia64/sn/kernel/sn2/io.o"
284 && $fullname ne "arch/ia64/kernel/gate-data.o"
285 && $fullname ne "drivers/ieee1394/oui.o"
286 && $fullname ne "security/capability.o"
287 && $fullname ne "sound/core/wrappers.o"
288 && $fullname ne "fs/ntfs/sysctl.o"
289 && $fullname ne "fs/jfs/jfs_debug.o"
290 ) {
291 printf "No nm data for $fullname\n";
292 }
293 return;
294 } 338 }
295 $nmdata{$fullname} = \@nmdata; 339 $nmdata{$fullname} = \@nmdata;
296} 340}
@@ -319,18 +363,14 @@ sub list_multiply_defined
319 foreach my $name (keys(%def)) { 363 foreach my $name (keys(%def)) {
320 if ($#{$def{$name}} > 0) { 364 if ($#{$def{$name}} > 0) {
321 # Special case for cond_syscall 365 # Special case for cond_syscall
322 if ($#{$def{$name}} == 1 && $name =~ /^sys_/ && 366 if ($#{$def{$name}} == 1 &&
323 ($def{$name}[0] eq "kernel/sys.o" || 367 ($name =~ /^sys_/ || $name =~ /^compat_sys_/ ||
324 $def{$name}[1] eq "kernel/sys.o")) { 368 $name =~ /^sys32_/)) {
325 &drop_def("kernel/sys.o", $name); 369 if($def{$name}[0] eq "kernel/sys_ni.o" ||
326 next; 370 $def{$name}[1] eq "kernel/sys_ni.o") {
327 } 371 &drop_def("kernel/sys_ni.o", $name);
328 # Special case for i386 entry code 372 next;
329 if ($#{$def{$name}} == 1 && $name =~ /^__kernel_/ && 373 }
330 $def{$name}[0] eq "arch/x86/kernel/vsyscall-int80_32.o" &&
331 $def{$name}[1] eq "arch/x86/kernel/vsyscall-sysenter_32.o") {
332 &drop_def("arch/x86/kernel/vsyscall-sysenter_32.o", $name);
333 next;
334 } 374 }
335 375
336 printf "$name is multiply defined in :-\n"; 376 printf "$name is multiply defined in :-\n";
@@ -372,31 +412,7 @@ sub resolve_external_references
372 $ref{$name} = "" 412 $ref{$name} = ""
373 } 413 }
374 } 414 }
375 elsif ( $name ne "mod_use_count_" 415 elsif ( ! $nameexception{$name}
376 && $name ne "__initramfs_end"
377 && $name ne "__initramfs_start"
378 && $name ne "_einittext"
379 && $name ne "_sinittext"
380 && $name ne "kallsyms_names"
381 && $name ne "kallsyms_num_syms"
382 && $name ne "kallsyms_addresses"
383 && $name ne "__this_module"
384 && $name ne "_etext"
385 && $name ne "_edata"
386 && $name ne "_end"
387 && $name ne "__bss_start"
388 && $name ne "_text"
389 && $name ne "_stext"
390 && $name ne "__gp"
391 && $name ne "ia64_unw_start"
392 && $name ne "ia64_unw_end"
393 && $name ne "__init_begin"
394 && $name ne "__init_end"
395 && $name ne "__bss_stop"
396 && $name ne "__nosave_begin"
397 && $name ne "__nosave_end"
398 && $name ne "pg0"
399 && $name ne "__module_text_address"
400 && $name !~ /^__sched_text_/ 416 && $name !~ /^__sched_text_/
401 && $name !~ /^__start_/ 417 && $name !~ /^__start_/
402 && $name !~ /^__end_/ 418 && $name !~ /^__end_/
@@ -407,7 +423,6 @@ sub resolve_external_references
407 && $name !~ /^__.*per_cpu_end/ 423 && $name !~ /^__.*per_cpu_end/
408 && $name !~ /^__alt_instructions/ 424 && $name !~ /^__alt_instructions/
409 && $name !~ /^__setup_/ 425 && $name !~ /^__setup_/
410 && $name !~ /^jiffies/
411 && $name !~ /^__mod_timer/ 426 && $name !~ /^__mod_timer/
412 && $name !~ /^__mod_page_state/ 427 && $name !~ /^__mod_page_state/
413 && $name !~ /^init_module/ 428 && $name !~ /^init_module/
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-24 21:14:56 -0500