diff options
Diffstat (limited to 'net/bluetooth/rfcomm/tty.c')
| -rw-r--r-- | net/bluetooth/rfcomm/tty.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c index 6ea08b05b53..a58d693e1e6 100644 --- a/net/bluetooth/rfcomm/tty.c +++ b/net/bluetooth/rfcomm/tty.c @@ -385,6 +385,14 @@ static int rfcomm_create_dev(struct sock *sk, void __user *arg) dlc = rfcomm_pi(sk)->dlc; rfcomm_dlc_hold(dlc); } else { + /* Validate the channel is unused */ + dlc = rfcomm_dlc_exists(&req.src, &req.dst, req.channel); + if (IS_ERR(dlc)) + return PTR_ERR(dlc); + else if (dlc) { + rfcomm_dlc_put(dlc); + return -EBUSY; + } dlc = rfcomm_dlc_alloc(GFP_KERNEL); if (!dlc) return -ENOMEM; |