From: Johan Hedberg Date: Sun, 17 Aug 2014 21:41:42 +0000 (+0300) Subject: Bluetooth: Fix hci_conn reference counting with hci_chan X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6c388d32ec1b9fcc2f2404fb5e9b3b0096be5de9;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git Bluetooth: Fix hci_conn reference counting with hci_chan The hci_chan_del() function was doing a hci_conn_drop() but there was no matching hci_conn_hold() in the hci_chan_create() function. Furthermore, as the hci_chan struct holds a pointer to the hci_conn there should be proper use of hci_conn_get/put. This patch fixes both issues so that hci_chan does correct reference counting of the hci_conn object. Signed-off-by: Johan Hedberg Signed-off-by: Marcel Holtmann --- diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c index 4ecc9d5fce7a..7815826a48e4 100644 --- a/net/bluetooth/hci_conn.c +++ b/net/bluetooth/hci_conn.c @@ -1295,7 +1295,8 @@ struct hci_chan *hci_chan_create(struct hci_conn *conn) if (!chan) return NULL; - chan->conn = conn; + chan->conn = hci_conn_get(conn); + hci_conn_hold(conn); skb_queue_head_init(&chan->data_q); chan->state = BT_CONNECTED; @@ -1316,6 +1317,7 @@ void hci_chan_del(struct hci_chan *chan) synchronize_rcu(); hci_conn_drop(conn); + hci_conn_put(conn); skb_queue_purge(&chan->data_q); kfree(chan);