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Diffstat (limited to 'net/netlink/af_netlink.c')
-rw-r--r--net/netlink/af_netlink.c27
1 files changed, 23 insertions, 4 deletions
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 62bea4591054..602e5ebe9db3 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -322,14 +322,11 @@ static void netlink_skb_set_owner_r(struct sk_buff *skb, struct sock *sk)
sk_mem_charge(sk, skb->truesize);
}
-static void netlink_sock_destruct(struct sock *sk)
+static void __netlink_sock_destruct(struct sock *sk)
{
struct netlink_sock *nlk = nlk_sk(sk);
if (nlk->cb_running) {
- if (nlk->cb.done)
- nlk->cb.done(&nlk->cb);
-
module_put(nlk->cb.module);
kfree_skb(nlk->cb.skb);
}
@@ -346,6 +343,28 @@ static void netlink_sock_destruct(struct sock *sk)
WARN_ON(nlk_sk(sk)->groups);
}
+static void netlink_sock_destruct_work(struct work_struct *work)
+{
+ struct netlink_sock *nlk = container_of(work, struct netlink_sock,
+ work);
+
+ nlk->cb.done(&nlk->cb);
+ __netlink_sock_destruct(&nlk->sk);
+}
+
+static void netlink_sock_destruct(struct sock *sk)
+{
+ struct netlink_sock *nlk = nlk_sk(sk);
+
+ if (nlk->cb_running && nlk->cb.done) {
+ INIT_WORK(&nlk->work, netlink_sock_destruct_work);
+ schedule_work(&nlk->work);
+ return;
+ }
+
+ __netlink_sock_destruct(sk);
+}
+
/* This lock without WQ_FLAG_EXCLUSIVE is good on UP and it is _very_ bad on
* SMP. Look, when several writers sleep and reader wakes them up, all but one
* immediately hit write lock and grab all the cpus. Exclusive sleep solves