From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Johan Hovold Subject: [ 21/52] serial: pch_uart: fix tty-kref leak in dma-rx path Date: Wed, 2 Oct 2013 21:05:39 -0700 Message-Id: <20131003040523.629664932@linuxfoundation.org> In-Reply-To: <20131003040522.190209641@linuxfoundation.org> References: <20131003040522.190209641@linuxfoundation.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Johan Hovold commit 19b85cfb190eb9980eaf416bff96aef4159a430e upstream. Fix tty_kref leak when tty_buffer_request room fails in dma-rx path. Note that the tty ref isn't really needed anymore, but as the leak has always been there, fixing it before removing should makes it easier to backport the fix. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/pch_uart.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/tty/serial/pch_uart.c +++ b/drivers/tty/serial/pch_uart.c @@ -658,11 +658,12 @@ static int dma_push_rx(struct eg20t_port dev_warn(port->dev, "Rx overrun: dropping %u bytes\n", size - room); if (!room) - return room; + goto out; tty_insert_flip_string(tport, sg_virt(&priv->sg_rx), size); port->icount.rx += room; +out: tty_kref_put(tty); return room;