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authorMichael Büsch <mb@bu3sch.de>2008-03-13 15:22:46 +0000
committerMichael Büsch <mb@bu3sch.de>2008-03-13 15:22:46 +0000
commit6a2a1e251b4d65f8989ba29e8cc69cbe6ad59321 (patch)
tree0effa9b9155ac1b5151d878a89465cd81910e183 /package/switch
parentcb354d27509bf34083d45c9f96a53c87cf99e247 (diff)
downloadmtk-20170518-6a2a1e251b4d65f8989ba29e8cc69cbe6ad59321.zip
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Check the return values of kmalloc()
SVN-Revision: 10599
Diffstat (limited to 'package/switch')
-rw-r--r--package/switch/src/switch-core.c31
1 files changed, 25 insertions, 6 deletions
diff --git a/package/switch/src/switch-core.c b/package/switch/src/switch-core.c
index e0aa541..87aa972 100644
--- a/package/switch/src/switch-core.c
+++ b/package/switch/src/switch-core.c
@@ -158,6 +158,8 @@ static void add_handler(switch_driver *driver, const switch_config *handler, str
switch_proc_handler *tmp;
tmp = (switch_proc_handler *) kmalloc(sizeof(switch_proc_handler), GFP_KERNEL);
+ if (!tmp)
+ return;
INIT_LIST_HEAD(&tmp->list);
tmp->parent = parent;
tmp->nr = nr;
@@ -239,11 +241,26 @@ static int do_register(switch_driver *driver)
switch_priv *priv;
int i;
char buf[4];
-
- if ((priv = kmalloc(sizeof(switch_priv), GFP_KERNEL)) == NULL)
- return -ENOBUFS;
+
+ priv = kmalloc(sizeof(switch_priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
driver->data = (void *) priv;
+ priv->ports = kmalloc((driver->ports + 1) * sizeof(struct proc_dir_entry *),
+ GFP_KERNEL);
+ if (!priv->ports) {
+ kfree(priv);
+ return -ENOMEM;
+ }
+ priv->vlans = kmalloc((driver->vlans + 1) * sizeof(struct proc_dir_entry *),
+ GFP_KERNEL);
+ if (!priv->vlans) {
+ kfree(priv->ports);
+ kfree(priv);
+ return -ENOMEM;
+ }
+
INIT_LIST_HEAD(&priv->data.list);
priv->nr = drv_num++;
@@ -254,7 +271,6 @@ static int do_register(switch_driver *driver)
}
priv->port_dir = proc_mkdir("port", priv->driver_dir);
- priv->ports = kmalloc((driver->ports + 1) * sizeof(struct proc_dir_entry *), GFP_KERNEL);
for (i = 0; i < driver->ports; i++) {
sprintf(buf, "%d", i);
priv->ports[i] = proc_mkdir(buf, priv->port_dir);
@@ -264,7 +280,6 @@ static int do_register(switch_driver *driver)
priv->ports[i] = NULL;
priv->vlan_dir = proc_mkdir("vlan", priv->driver_dir);
- priv->vlans = kmalloc((driver->vlans + 1) * sizeof(struct proc_dir_entry *), GFP_KERNEL);
for (i = 0; i < driver->vlans; i++) {
sprintf(buf, "%d", i);
priv->vlans[i] = proc_mkdir(buf, priv->vlan_dir);
@@ -339,6 +354,8 @@ switch_vlan_config *switch_parse_vlan(switch_driver *driver, char *buf)
int j, u, p, s;
c = kmalloc(sizeof(switch_vlan_config), GFP_KERNEL);
+ if (!c)
+ return NULL;
memset(c, 0, sizeof(switch_vlan_config));
while (isspace(*buf)) buf++;
@@ -392,7 +409,7 @@ int switch_register_driver(switch_driver *driver)
struct list_head *pos;
switch_driver *new;
int ret;
-
+
list_for_each(pos, &drivers.list) {
if (strcmp(list_entry(pos, switch_driver, list)->name, driver->name) == 0) {
printk("Switch driver '%s' already exists in the kernel\n", driver->name);
@@ -405,6 +422,8 @@ int switch_register_driver(switch_driver *driver)
}
new = kmalloc(sizeof(switch_driver), GFP_KERNEL);
+ if (!new)
+ return -ENOMEM;
memcpy(new, driver, sizeof(switch_driver));
new->name = strdup(driver->name);
new->interface = strdup(driver->interface);