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libsepol-3.2-3 Rebase on upstream commit 32611aea6543 See $ cd SELinuxProject/selinux $ git log --pretty=oneline libsepol-3.2..32611aea6543 -- libsepol
2021-07-28 10:38:25 +00:00
From 13eaba21ef523325f226c14c4c792ce404b58970 Mon Sep 17 00:00:00 2001
From: Nicolas Iooss <nicolas.iooss@m4x.org>
Date: Tue, 16 Mar 2021 23:23:13 +0100
Subject: [PATCH] libsepol: make num_* unsigned int in module_to_cil
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Using signed integer to represent counts can troube some gcc
optimisation passes, for example in
https://github.com/fishilico/selinux/runs/2125501324?check_suite_focus=true#step:9:107
In function ‘name_list_to_string’,
inlined from ‘constraint_expr_to_string’ at module_to_cil.c:1799:11:
module_to_cil.c:1156:8: error: argument 1 range
[18446744071562067968, 18446744073709551615] exceeds maximum
object size 9223372036854775807 [-Werror=alloc-size-larger-than=]
1156 | str = malloc(len);
| ^~~~~~~~~~~
In file included from module_to_cil.c:39:
module_to_cil.c: In function ‘constraint_expr_to_string’:
/usr/include/stdlib.h:539:14: note: in a call to allocation
function ‘malloc’ declared here
539 | extern void *malloc (size_t __size) __THROW __attribute_malloc__
| ^~~~~~
The wide range (from 18446744071562067968 = 0xffffffff80000000 to
18446744073709551615 = 0xffffffffffffffff) was caused by num_names being
a signed int used in "len += num_names;", even though it should always
be non-negative.
Prevent such issues from occurring by using "unsigned int" where
appropriate.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
---
libsepol/src/module_to_cil.c | 62 ++++++++++++++++++------------------
1 file changed, 31 insertions(+), 31 deletions(-)
diff --git a/libsepol/src/module_to_cil.c b/libsepol/src/module_to_cil.c
index a87bc15e7610..cb1069caffdf 100644
--- a/libsepol/src/module_to_cil.c
+++ b/libsepol/src/module_to_cil.c
@@ -717,9 +717,9 @@ exit:
return rc;
}
-static int num_digits(int n)
+static unsigned int num_digits(unsigned int n)
{
- int num = 1;
+ unsigned int num = 1;
while (n >= 10) {
n /= 10;
num++;
@@ -945,7 +945,7 @@ static char *search_attr_list(struct list *attr_list, int is_type, void *set)
return NULL;
}
-static int set_to_names(struct policydb *pdb, int is_type, void *set, struct list *attr_list, char ***names, int *num_names)
+static int set_to_names(struct policydb *pdb, int is_type, void *set, struct list *attr_list, char ***names, unsigned int *num_names)
{
char *attr_name = NULL;
int rc = 0;
@@ -982,12 +982,12 @@ exit:
return rc;
}
-static int ebitmap_to_names(struct ebitmap *map, char **vals_to_names, char ***names, int *num_names)
+static int ebitmap_to_names(struct ebitmap *map, char **vals_to_names, char ***names, unsigned int *num_names)
{
int rc = 0;
struct ebitmap_node *node;
uint32_t i;
- uint32_t num;
+ unsigned int num;
char **name_arr;
num = 0;
@@ -1026,7 +1026,7 @@ exit:
return rc;
}
-static int process_roleset(struct policydb *pdb, struct role_set *rs, struct list *attr_list, char ***names, int *num_names)
+static int process_roleset(struct policydb *pdb, struct role_set *rs, struct list *attr_list, char ***names, unsigned int *num_names)
{
int rc = 0;
@@ -1049,7 +1049,7 @@ exit:
return rc;
}
-static int process_typeset(struct policydb *pdb, struct type_set *ts, struct list *attr_list, char ***names, int *num_names)
+static int process_typeset(struct policydb *pdb, struct type_set *ts, struct list *attr_list, char ***names, unsigned int *num_names)
{
int rc = 0;
@@ -1072,7 +1072,7 @@ exit:
return rc;
}
-static void names_destroy(char ***names, int *num_names)
+static void names_destroy(char ***names, unsigned int *num_names)
{
free(*names);
*names = NULL;
@@ -1083,7 +1083,7 @@ static int roletype_role_in_ancestor_to_cil(struct policydb *pdb, struct stack *
{
struct list_node *curr;
char **tnames = NULL;
- int num_tnames, i;
+ unsigned int num_tnames, i;
struct role_list_node *role_node = NULL;
int rc;
struct type_set *ts;
@@ -1124,12 +1124,12 @@ exit:
}
-static int name_list_to_string(char **names, int num_names, char **string)
+static int name_list_to_string(char **names, unsigned int num_names, char **string)
{
// create a space separated string of the names
int rc = -1;
size_t len = 0;
- int i;
+ unsigned int i;
char *str;
char *strpos;
@@ -1184,7 +1184,7 @@ static int avrule_list_to_cil(int indent, struct policydb *pdb, struct avrule *a
struct avrule *avrule;
char **snames = NULL;
char **tnames = NULL;
- int s, t, num_snames, num_tnames;
+ unsigned int s, t, num_snames, num_tnames;
struct type_set *ts;
for (avrule = avrule_list; avrule != NULL; avrule = avrule->next) {
@@ -1257,7 +1257,7 @@ static int cond_expr_to_cil(int indent, struct policydb *pdb, struct cond_expr *
char *new_val = NULL;
char *val1 = NULL;
char *val2 = NULL;
- int num_params;
+ unsigned int num_params;
const char *op;
const char *fmt_str;
const char *type;
@@ -1432,11 +1432,11 @@ static int role_trans_to_cil(int indent, struct policydb *pdb, struct role_trans
int rc = 0;
struct role_trans_rule *rule;
char **role_names = NULL;
- int num_role_names = 0;
- int role;
+ unsigned int num_role_names = 0;
+ unsigned int role;
char **type_names = NULL;
- int num_type_names = 0;
- int type;
+ unsigned int num_type_names = 0;
+ unsigned int type;
uint32_t i;
struct ebitmap_node *node;
struct type_set *ts;
@@ -1482,10 +1482,10 @@ static int role_allows_to_cil(int indent, struct policydb *pdb, struct role_allo
int rc = -1;
struct role_allow_rule *rule;
char **roles = NULL;
- int num_roles = 0;
+ unsigned int num_roles = 0;
char **new_roles = NULL;
- int num_new_roles = 0;
- int i,j;
+ unsigned int num_new_roles = 0;
+ unsigned int i, j;
struct role_set *rs;
for (rule = rules; rule != NULL; rule = rule->next) {
@@ -1525,11 +1525,11 @@ static int range_trans_to_cil(int indent, struct policydb *pdb, struct range_tra
int rc = -1;
struct range_trans_rule *rule;
char **stypes = NULL;
- int num_stypes = 0;
- int stype;
+ unsigned int num_stypes = 0;
+ unsigned int stype;
char **ttypes = NULL;
- int num_ttypes = 0;
- int ttype;
+ unsigned int num_ttypes = 0;
+ unsigned int ttype;
struct ebitmap_node *node;
uint32_t i;
struct type_set *ts;
@@ -1594,11 +1594,11 @@ static int filename_trans_to_cil(int indent, struct policydb *pdb, struct filena
{
int rc = -1;
char **stypes = NULL;
- int num_stypes = 0;
- int stype;
+ unsigned int num_stypes = 0;
+ unsigned int stype;
char **ttypes = NULL;
- int num_ttypes = 0;
- int ttype;
+ unsigned int num_ttypes = 0;
+ unsigned int ttype;
struct type_set *ts;
struct filename_trans_rule *rule;
@@ -1716,7 +1716,7 @@ static int constraint_expr_to_string(struct policydb *pdb, struct constraint_exp
const char *attr2;
char *names = NULL;
char **name_list = NULL;
- int num_names = 0;
+ unsigned int num_names = 0;
struct type_set *ts;
rc = stack_init(&stack);
@@ -2090,9 +2090,9 @@ static int role_to_cil(int indent, struct policydb *pdb, struct avrule_block *UN
int rc = -1;
struct ebitmap_node *node;
uint32_t i;
- int j;
+ unsigned int j;
char **types = NULL;
- int num_types = 0;
+ unsigned int num_types = 0;
struct role_datum *role = datum;
struct type_set *ts;
struct list *attr_list = NULL;
--
2.32.0