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| author | Gustavo F. Padovan <padovan@profusion.mobi> | 2010-05-01 16:15:41 -0300 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2010-05-10 09:28:50 +0200 |
| commit | f6e6b16823de0aff31cb8ee8c098383e3aceec58 (patch) | |
| tree | 16665dc866c3fadbed7462b73cb4efe7f2c340b6 /net/bluetooth | |
| parent | 68d7f0ce911e41e463c45911be031cdf6a096fe8 (diff) | |
| download | linux-f6e6b16823de0aff31cb8ee8c098383e3aceec58.tar.gz linux-f6e6b16823de0aff31cb8ee8c098383e3aceec58.tar.xz | |
Bluetooth: Fix bug when retransmitting I-frames
If there is no frames to retransmit l2cap was crashing the kernel, now
we check if the queue is empty first.
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth')
| -rw-r--r-- | net/bluetooth/l2cap.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c index f9e4da2677af..4c7b2d22faa5 100644 --- a/net/bluetooth/l2cap.c +++ b/net/bluetooth/l2cap.c @@ -3546,7 +3546,8 @@ expected: if (pi->conn_state & L2CAP_CONN_REJ_ACT) pi->conn_state &= ~L2CAP_CONN_REJ_ACT; else { - sk->sk_send_head = TX_QUEUE(sk)->next; + if (!skb_queue_empty(TX_QUEUE(sk))) + sk->sk_send_head = TX_QUEUE(sk)->next; pi->next_tx_seq = pi->expected_ack_seq; l2cap_ertm_send(sk); } @@ -3593,7 +3594,8 @@ static inline void l2cap_data_channel_rrframe(struct sock *sk, u16 rx_control) if (pi->conn_state & L2CAP_CONN_REJ_ACT) pi->conn_state &= ~L2CAP_CONN_REJ_ACT; else { - sk->sk_send_head = TX_QUEUE(sk)->next; + if (!skb_queue_empty(TX_QUEUE(sk))) + sk->sk_send_head = TX_QUEUE(sk)->next; pi->next_tx_seq = pi->expected_ack_seq; l2cap_ertm_send(sk); } @@ -3625,12 +3627,14 @@ static inline void l2cap_data_channel_rejframe(struct sock *sk, u16 rx_control) if (pi->conn_state & L2CAP_CONN_REJ_ACT) pi->conn_state &= ~L2CAP_CONN_REJ_ACT; else { - sk->sk_send_head = TX_QUEUE(sk)->next; + if (!skb_queue_empty(TX_QUEUE(sk))) + sk->sk_send_head = TX_QUEUE(sk)->next; pi->next_tx_seq = pi->expected_ack_seq; l2cap_ertm_send(sk); } } else { - sk->sk_send_head = TX_QUEUE(sk)->next; + if (!skb_queue_empty(TX_QUEUE(sk))) + sk->sk_send_head = TX_QUEUE(sk)->next; pi->next_tx_seq = pi->expected_ack_seq; l2cap_ertm_send(sk); |