tree 4f51af5a0ad49953f0fa71f69b1837f15b84aa2a
parent c01b244ad848ac7f0faa141182db80650a8a761a
author Michael Grzeschik <m.grzeschik@pengutronix.de> 1495450964 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1497343704 +0200

usb: usbip: set buffer pointers to NULL after free

The usbip stack dynamically allocates the transfer_buffer and
setup_packet of each urb that got generated by the tcp to usb stub code.
As these pointers are always used only once we will set them to NULL
after use. This is done likewise to the free_urb code in vudc_dev.c.
This patch fixes double kfree situations where the usbip remote side
added the URB_FREE_BUFFER.

Cc: stable@vger.kernel.org
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Acked-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>