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net: Make sure BHs are disabled in sock_prot_inuse_add()

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The rule of calling sock_prot_inuse_add() is that BHs must
be disabled.  Some new calls were added where this was not
true and this tiggers warnings as reported by Ilpo.

Fix this by adding explicit BH disabling around those call sites,
or moving sock_prot_inuse_add() call inside an existing BH disabled
section.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2008-11-24 00:09:29 -08:00 committed by David S. Miller
parent 1f87e235e6
commit 920de804bc
3 changed files with 7 additions and 5 deletions
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2
net/ipv4/inet_hashtables.c
View file

@ -402,9 +402,9 @@ void inet_unhash(struct sock *sk)
spin_lock_bh(lock);
done =__sk_nulls_del_node_init_rcu(sk);
spin_unlock_bh(lock);
if (done)
sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1);
spin_unlock_bh(lock);
}
EXPORT_SYMBOL_GPL(inet_unhash);

4
net/packet/af_packet.c
View file

@ -872,6 +872,7 @@ static int packet_release(struct socket *sock)
write_lock_bh(&net->packet.sklist_lock);
sk_del_node_init(sk);
sock_prot_inuse_add(net, sk->sk_prot, -1);
write_unlock_bh(&net->packet.sklist_lock);
/*
@ -910,7 +911,6 @@ static int packet_release(struct socket *sock)
skb_queue_purge(&sk->sk_receive_queue);
sk_refcnt_debug_release(sk);
sock_prot_inuse_add(net, sk->sk_prot, -1);
sock_put(sk);
return 0;
}
@ -1085,8 +1085,8 @@ static int packet_create(struct net *net, struct socket *sock, int protocol)
write_lock_bh(&net->packet.sklist_lock);
sk_add_node(sk, &net->packet.sklist);
write_unlock_bh(&net->packet.sklist_lock);
sock_prot_inuse_add(net, &packet_proto, 1);
write_unlock_bh(&net->packet.sklist_lock);
return(0);
out:
return err;

6
net/unix/af_unix.c
View file

@ -615,9 +615,11 @@ static struct sock *unix_create1(struct net *net, struct socket *sock)
out:
if (sk == NULL)
atomic_dec(&unix_nr_socks);
else
else {
local_bh_disable();
sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1);
local_bh_enable();
}
return sk;
}