From 5533ca0b4d5453c3639cb906485d370612b5a1e4 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Sun, 8 May 2016 20:07:57 +0200 Subject: [PATCH] USB: serial: io_edgeport: fix memory leaks in probe error path commit c8d62957d450cc1a22ce3242908709fe367ddc8e upstream. URBs and buffers allocated in attach for Epic devices would never be deallocated in case of a later probe error (e.g. failure to allocate minor numbers) as disconnect is then never called. Fix by moving deallocation to release and making sure that the URBs are first unlinked. Fixes: f9c99bb8b3a1 ("USB: usb-serial: replace shutdown with disconnect, release") Signed-off-by: Johan Hovold Acked-by: Greg Kroah-Hartman Signed-off-by: Ben Hutchings --- drivers/usb/serial/io_edgeport.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c index 1106e7d9ced01..1947ea0e09881 100644 --- a/drivers/usb/serial/io_edgeport.c +++ b/drivers/usb/serial/io_edgeport.c @@ -2966,16 +2966,9 @@ static void edge_disconnect(struct usb_serial *serial) { struct edgeport_serial *edge_serial = usb_get_serial_data(serial); - /* stop reads and writes on all ports */ - /* free up our endpoint stuff */ if (edge_serial->is_epic) { usb_kill_urb(edge_serial->interrupt_read_urb); - usb_free_urb(edge_serial->interrupt_read_urb); - kfree(edge_serial->interrupt_in_buffer); - usb_kill_urb(edge_serial->read_urb); - usb_free_urb(edge_serial->read_urb); - kfree(edge_serial->bulk_in_buffer); } } @@ -2988,6 +2981,16 @@ static void edge_release(struct usb_serial *serial) { struct edgeport_serial *edge_serial = usb_get_serial_data(serial); + if (edge_serial->is_epic) { + usb_kill_urb(edge_serial->interrupt_read_urb); + usb_free_urb(edge_serial->interrupt_read_urb); + kfree(edge_serial->interrupt_in_buffer); + + usb_kill_urb(edge_serial->read_urb); + usb_free_urb(edge_serial->read_urb); + kfree(edge_serial->bulk_in_buffer); + } + kfree(edge_serial); } -- 2.47.3