Return-Path: From: Gianluca Anzolin To: gustavo@padovan.org Cc: peter@hurleysoftware.com, marcel@holtmann.org, linux-bluetooth@vger.kernel.org, gregkh@linuxfoundation.org, jslaby@suse.cz, Gianluca Anzolin Subject: [PATCH v4 6/6] rfcomm: Purge the dlc->tx_queue to avoid circular dependency Date: Fri, 26 Jul 2013 19:18:58 +0200 Message-Id: <1374859138-19467-7-git-send-email-gianluca@sottospazio.it> In-Reply-To: <1374859138-19467-1-git-send-email-gianluca@sottospazio.it> References: <1374859138-19467-1-git-send-email-gianluca@sottospazio.it> List-ID: In rfcomm_tty_cleanup we purge the dlc->tx_queue which may contain socket buffers referencing the tty_port and thus preventing the tty_port destruction. Signed-off-by: Gianluca Anzolin --- net/bluetooth/rfcomm/tty.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c index 9def67a..1c6bd90 100644 --- a/net/bluetooth/rfcomm/tty.c +++ b/net/bluetooth/rfcomm/tty.c @@ -667,6 +667,12 @@ static void rfcomm_tty_cleanup(struct tty_struct *tty) tty->driver_data = NULL; rfcomm_dlc_unlock(dev->dlc); + /* + * purge the dlc->tx_queue to avoid circular dependencies + * between dev and dlc + */ + skb_queue_purge(&dev->dlc->tx_queue); + tty_port_put(&dev->port); } -- 1.8.3.4