diff options
Diffstat (limited to 'net/packet/af_packet.c')
| -rw-r--r-- | net/packet/af_packet.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index 6a2fe66e4d97..92ca3e106c2b 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -2976,6 +2976,10 @@ static int packet_do_bind(struct sock *sk, const char *name, int ifindex, if (need_rehook) { if (po->running) { rcu_read_unlock(); + /* prevents packet_notifier() from calling + * register_prot_hook() + */ + po->num = 0; __unregister_prot_hook(sk, true); rcu_read_lock(); dev_curr = po->prot_hook.dev; @@ -2984,6 +2988,7 @@ static int packet_do_bind(struct sock *sk, const char *name, int ifindex, dev->ifindex); } + BUG_ON(po->running); po->num = proto; po->prot_hook.type = proto; |