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| author | Pauli Virtanen <pav@iki.fi> | 2023-07-27 00:25:26 +0300 |
|---|---|---|
| committer | Luiz Augusto von Dentz <luiz.von.dentz@intel.com> | 2023-08-11 11:52:32 -0700 |
| commit | 69997d50ec574be816b4ee8f9cee52ebbd53f8bd (patch) | |
| tree | 5f698d3a2fde6f2eb491bb77d8f3986ee3bfad06 /net/bluetooth | |
| parent | 90005880a68cc8908885f5c9c9e2e60deaf78700 (diff) | |
| download | linux-69997d50ec574be816b4ee8f9cee52ebbd53f8bd.tar.gz linux-69997d50ec574be816b4ee8f9cee52ebbd53f8bd.tar.bz2 linux-69997d50ec574be816b4ee8f9cee52ebbd53f8bd.zip | |
Bluetooth: ISO: handle bound CIS cleanup via hci_conn
Calling hci_conn_del in __iso_sock_close is invalid. It needs
hdev->lock, but it cannot be acquired there due to lock ordering.
Fix this by doing cleanup via hci_conn_drop.
Return hci_conn with refcount 1 from hci_bind_cis and hci_connect_cis,
so that the iso_conn always holds one reference. This also fixes
refcounting when error handling.
Since hci_conn_abort shall handle termination of connections in any
state properly, we can handle BT_CONNECT socket state in the same way as
BT_CONNECTED.
Signed-off-by: Pauli Virtanen <pav@iki.fi>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Diffstat (limited to 'net/bluetooth')
| -rw-r--r-- | net/bluetooth/hci_conn.c | 5 | ||||
| -rw-r--r-- | net/bluetooth/iso.c | 14 |
2 files changed, 6 insertions, 13 deletions
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c index cccc2b8b60a8..923bb7e7be2b 100644 --- a/net/bluetooth/hci_conn.c +++ b/net/bluetooth/hci_conn.c @@ -1909,6 +1909,8 @@ struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst, return ERR_PTR(-EINVAL); } + hci_conn_hold(cis); + cis->iso_qos = *qos; cis->state = BT_BOUND; @@ -2262,6 +2264,9 @@ struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst, return ERR_PTR(-ENOLINK); } + /* Link takes the refcount */ + hci_conn_drop(cis); + cis->state = BT_CONNECT; hci_le_create_cis_pending(hdev); diff --git a/net/bluetooth/iso.c b/net/bluetooth/iso.c index cbe3299b4a41..358954bfbb32 100644 --- a/net/bluetooth/iso.c +++ b/net/bluetooth/iso.c @@ -628,6 +628,7 @@ static void __iso_sock_close(struct sock *sk) iso_sock_cleanup_listen(sk); break; + case BT_CONNECT: case BT_CONNECTED: case BT_CONFIG: if (iso_pi(sk)->conn->hcon) { @@ -645,19 +646,6 @@ static void __iso_sock_close(struct sock *sk) case BT_CONNECT2: iso_chan_del(sk, ECONNRESET); break; - case BT_CONNECT: - /* In case of DEFER_SETUP the hcon would be bound to CIG which - * needs to be removed so just call hci_conn_del so the cleanup - * callback do what is needed. - */ - if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags) && - iso_pi(sk)->conn->hcon) { - hci_conn_del(iso_pi(sk)->conn->hcon); - iso_pi(sk)->conn->hcon = NULL; - } - - iso_chan_del(sk, ECONNRESET); - break; case BT_DISCONN: iso_chan_del(sk, ECONNRESET); break; |