---

yaml
---
r: 48099
b: refs/heads/master
c: fd706d6
h: refs/heads/master
i:
  48097: 95062db
  48095: b6d9fdc
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d486dd1fb8573fad5b8dab61a7d1406116fd4baf
+refs/heads/master: fd706d6957b3c66ae70b4bbdb9e13993213697f7

trunk/net/netfilter/core.c

@@ -61,28 +61,31 @@ EXPORT_SYMBOL_GPL(nf_unregister_afinfo);
  * packets come back: if the hook is gone, the packet is discarded. */
 struct list_head nf_hooks[NPROTO][NF_MAX_HOOKS] __read_mostly;
 EXPORT_SYMBOL(nf_hooks);
-static DEFINE_SPINLOCK(nf_hook_lock);
+static DEFINE_MUTEX(nf_hook_mutex);
 
 int nf_register_hook(struct nf_hook_ops *reg)
 {
 	struct list_head *i;
+	int err;
 
-	spin_lock_bh(&nf_hook_lock);
+	err = mutex_lock_interruptible(&nf_hook_mutex);
+	if (err < 0)
+		return err;
 	list_for_each(i, &nf_hooks[reg->pf][reg->hooknum]) {
 		if (reg->priority < ((struct nf_hook_ops *)i)->priority)
 			break;
 	}
 	list_add_rcu(&reg->list, i->prev);
-	spin_unlock_bh(&nf_hook_lock);
+	mutex_unlock(&nf_hook_mutex);
 	return 0;
 }
 EXPORT_SYMBOL(nf_register_hook);
 
 void nf_unregister_hook(struct nf_hook_ops *reg)
 {
-	spin_lock_bh(&nf_hook_lock);
+	mutex_lock(&nf_hook_mutex);
 	list_del_rcu(&reg->list);
-	spin_unlock_bh(&nf_hook_lock);
+	mutex_unlock(&nf_hook_mutex);
 
 	synchronize_net();
 }