[PATCH 01/46] selinux: Use kmalloc_array() in cond_init_bool_indexes()

SF Markus Elfring
2017-01-15T14:57:24Z

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Sat, 14 Jan 2017 10:48:28 +0100

* A multiplication for the size determination of a memory allocation
indicated that an array data structure should be processed.
Thus use the corresponding function "kmalloc_array".

This issue was detected by using the Coccinelle software.

* Replace the specification of a data type by a pointer dereference
to make the corresponding size determination a bit safer according to
the Linux coding style convention.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
security/selinux/ss/conditional.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/security/selinux/ss/conditional.c b/security/selinux/ss/conditional.c
index 34afeadd9e73..fcfab2635c11 100644
--- a/security/selinux/ss/conditional.c
+++ b/security/selinux/ss/conditional.c
@@ -176,8 +176,9 @@ void cond_policydb_destroy(struct policydb *p)
int cond_init_bool_indexes(struct policydb *p)
{
kfree(p->bool_val_to_struct);
- p->bool_val_to_struct =
- kmalloc(p->p_bools.nprim * sizeof(struct cond_bool_datum *), GFP_KERNEL);
+ p->bool_val_to_struct = kmalloc_array(p->p_bools.nprim,
+ sizeof(*p->bool_val_to_struct),
+ GFP_KERNEL);
if (!p->bool_val_to_struct)
return -ENOMEM;
return 0;
--
2.11.0