openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

l2tp: fix memory allocation 

Since .size is set properly in "struct pernet_operations l2tp_net_ops",
allocating space for "struct l2tp_net" by hand is not correct, even causes
memory leakage.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2010-04-23 00:53:39 +00:00 committed by David S. Miller
parent 3b51cc996e
commit e773aaff82
1 changed files with 1 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
net/l2tp/l2tp_core.c
View File

@ -1617,14 +1617,9 @@ EXPORT_SYMBOL_GPL(l2tp_session_create);
static __net_init int l2tp_init_net(struct net *net)
{
struct l2tp_net *pn;
int err;
struct l2tp_net *pn = net_generic(net, l2tp_net_id);
int hash;
pn = kzalloc(sizeof(*pn), GFP_KERNEL);
if (!pn)
return -ENOMEM;
INIT_LIST_HEAD(&pn->l2tp_tunnel_list);
spin_lock_init(&pn->l2tp_tunnel_list_lock);
@ -1633,33 +1628,11 @@ static __net_init int l2tp_init_net(struct net *net)
spin_lock_init(&pn->l2tp_session_hlist_lock);
err = net_assign_generic(net, l2tp_net_id, pn);
if (err)
goto out;
return 0;
out:
kfree(pn);
return err;
}
static __net_exit void l2tp_exit_net(struct net *net)
{
struct l2tp_net *pn;
pn = net_generic(net, l2tp_net_id);
/*
* if someone has cached our net then
* further net_generic call will return NULL
*/
net_assign_generic(net, l2tp_net_id, NULL);
kfree(pn);
}
static struct pernet_operations l2tp_net_ops = {
.init = l2tp_init_net,
.exit = l2tp_exit_net,
.id = &l2tp_net_id,
.size = sizeof(struct l2tp_net),
};