diff options
| -rw-r--r-- | net/bluetooth/l2cap_sock.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c index f1a51564b8f..7913c28c643 100644 --- a/net/bluetooth/l2cap_sock.c +++ b/net/bluetooth/l2cap_sock.c @@ -307,7 +307,7 @@ static int l2cap_sock_accept(struct socket *sock, struct socket *newsock, long timeo; int err = 0; - lock_sock_nested(sk, SINGLE_DEPTH_NESTING); + lock_sock_nested(sk, L2CAP_NESTING_PARENT); timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); @@ -339,7 +339,7 @@ static int l2cap_sock_accept(struct socket *sock, struct socket *newsock, release_sock(sk); timeo = schedule_timeout(timeo); - lock_sock_nested(sk, SINGLE_DEPTH_NESTING); + lock_sock_nested(sk, L2CAP_NESTING_PARENT); } __set_current_state(TASK_RUNNING); remove_wait_queue(sk_sleep(sk), &wait); @@ -1252,7 +1252,14 @@ static void l2cap_sock_teardown_cb(struct l2cap_chan *chan, int err) struct sock *sk = chan->data; struct sock *parent; - lock_sock_nested(sk, SINGLE_DEPTH_NESTING); + /* This callback can be called both for server (BT_LISTEN) + * sockets as well as "normal" ones. To avoid lockdep warnings + * with child socket locking (through l2cap_sock_cleanup_listen) + * we need separation into separate nesting levels. The simplest + * way to accomplish this is to inherit the nesting level used + * for the channel. + */ + lock_sock_nested(sk, atomic_read(&chan->nesting)); parent = bt_sk(sk)->parent; |