Return-Path: From: "Gustavo F. Padovan" To: linux-bluetooth@vger.kernel.org Cc: marcel@holtmann.org, gustavo@padovan.org Subject: [PATCH 1/2] Bluetooth: Add locking scheme to timeout callbacks. Date: Mon, 24 Aug 2009 00:45:19 -0300 Message-Id: <1251085520-9094-1-git-send-email-gustavo@las.ic.unicamp.br> List-ID: Avoid race conditions when acessing the sock. Signed-off-by: Gustavo F. Padovan --- net/bluetooth/l2cap.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c index c04526f..efac637 100644 --- a/net/bluetooth/l2cap.c +++ b/net/bluetooth/l2cap.c @@ -1192,6 +1192,7 @@ static void l2cap_monitor_timeout(unsigned long arg) struct sock *sk = (void *) arg; u16 control; + bh_lock_sock(sk); if (l2cap_pi(sk)->retry_count >= l2cap_pi(sk)->remote_max_tx) { l2cap_send_disconn_req(l2cap_pi(sk)->conn, sk); return; @@ -1203,6 +1204,7 @@ static void l2cap_monitor_timeout(unsigned long arg) control = L2CAP_CTRL_POLL; control |= L2CAP_SUPER_RCV_READY; l2cap_send_sframe(l2cap_pi(sk), control); + bh_unlock_sock(sk); } static void l2cap_retrans_timeout(unsigned long arg) @@ -1210,6 +1212,7 @@ static void l2cap_retrans_timeout(unsigned long arg) struct sock *sk = (void *) arg; u16 control; + bh_lock_sock(sk); l2cap_pi(sk)->retry_count = 1; __mod_monitor_timer(); @@ -1218,6 +1221,7 @@ static void l2cap_retrans_timeout(unsigned long arg) control = L2CAP_CTRL_POLL; control |= L2CAP_SUPER_RCV_READY; l2cap_send_sframe(l2cap_pi(sk), control); + bh_unlock_sock(sk); } static void l2cap_drop_acked_frames(struct sock *sk) -- 1.6.3.3