[PATCH 1/3] selinux: Return directly after a failed memory allocation in policydb_index()

SF Markus Elfring
2017-04-04T11:14:42Z

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Tue, 4 Apr 2017 10:20:46 +0200

Replace five goto statements (and previous variable assignments) by
direct returns after a memory allocation failure in this function.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
security/selinux/ss/policydb.c | 15 +++++----------
1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c
index 0080122760ad..87d645d3a39f 100644
--- a/security/selinux/ss/policydb.c
+++ b/security/selinux/ss/policydb.c
@@ -538,34 +538,30 @@ static int policydb_index(struct policydb *p)
symtab_hash_eval(p->symtab);
#endif

- rc = -ENOMEM;
p->class_val_to_struct = kcalloc(p->p_classes.nprim,
sizeof(*p->class_val_to_struct),
GFP_KERNEL);
if (!p->class_val_to_struct)
- goto out;
+ return -ENOMEM;

- rc = -ENOMEM;
p->role_val_to_struct = kcalloc(p->p_roles.nprim,
sizeof(*p->role_val_to_struct),
GFP_KERNEL);
if (!p->role_val_to_struct)
- goto out;
+ return -ENOMEM;

- rc = -ENOMEM;
p->user_val_to_struct = kcalloc(p->p_users.nprim,
sizeof(*p->user_val_to_struct),
GFP_KERNEL);
if (!p->user_val_to_struct)
- goto out;
+ return -ENOMEM;

/* Yes, I want the sizeof the pointer, not the structure */
- rc = -ENOMEM;
p->type_val_to_struct_array = flex_array_alloc(sizeof(struct type_datum *),
p->p_types.nprim,
GFP_KERNEL | __GFP_ZERO);
if (!p->type_val_to_struct_array)
- goto out;
+ return -ENOMEM;

rc = flex_array_prealloc(p->type_val_to_struct_array, 0,
p->p_types.nprim, GFP_KERNEL | __GFP_ZERO);
@@ -577,12 +573,11 @@ static int policydb_index(struct policydb *p)
goto out;

for (i = 0; i < SYM_NUM; i++) {
- rc = -ENOMEM;
p->sym_val_to_name[i] = flex_array_alloc(sizeof(char *),
p->symtab[i].nprim,
GFP_KERNEL | __GFP_ZERO);
if (!p->sym_val_to_name[i])
- goto out;
+ return -ENOMEM;

rc = flex_array_prealloc(p->sym_val_to_name[i],
0, p->symtab[i].nprim,
--
2.12.2