mac80211: handle allocation failures in mesh_pathtbl_init()
The calls to kzalloc() weren't checked here and it upsets the static
checkers. Obviously they're not super likely to fail, but we might
as well add some error handling.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
index a66a2ca..55a206c 100644
--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
@@ -1095,6 +1095,7 @@
int mesh_pathtbl_init(void)
{
struct mesh_table *tbl_path, *tbl_mpp;
+ int ret;
tbl_path = mesh_table_alloc(INIT_PATHS_SIZE_ORDER);
if (!tbl_path)
@@ -1103,18 +1104,26 @@
tbl_path->copy_node = &mesh_path_node_copy;
tbl_path->mean_chain_len = MEAN_CHAIN_LEN;
tbl_path->known_gates = kzalloc(sizeof(struct hlist_head), GFP_ATOMIC);
+ if (!tbl_path->known_gates) {
+ ret = -ENOMEM;
+ goto free_path;
+ }
INIT_HLIST_HEAD(tbl_path->known_gates);
tbl_mpp = mesh_table_alloc(INIT_PATHS_SIZE_ORDER);
if (!tbl_mpp) {
- mesh_table_free(tbl_path, true);
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto free_path;
}
tbl_mpp->free_node = &mesh_path_node_free;
tbl_mpp->copy_node = &mesh_path_node_copy;
tbl_mpp->mean_chain_len = MEAN_CHAIN_LEN;
tbl_mpp->known_gates = kzalloc(sizeof(struct hlist_head), GFP_ATOMIC);
+ if (!tbl_mpp->known_gates) {
+ ret = -ENOMEM;
+ goto free_mpp;
+ }
INIT_HLIST_HEAD(tbl_mpp->known_gates);
/* Need no locking since this is during init */
@@ -1122,6 +1131,12 @@
RCU_INIT_POINTER(mpp_paths, tbl_mpp);
return 0;
+
+free_mpp:
+ mesh_table_free(tbl_mpp, true);
+free_path:
+ mesh_table_free(tbl_path, true);
+ return ret;
}
void mesh_path_expire(struct ieee80211_sub_if_data *sdata)