Re: [PATCH v2 2/2] USB: serial: opticon: stop all I/O on close()

On Tue, Jan 14, 2020 at 12:01:46PM +0100, Johan Hovold wrote:

Make sure to stop any submitted write URBs on close(). This specifically avoids a NULL-pointer dereference or use-after-free in case of a late completion event after driver unbind.

Fixes: 648d4e16567e ("USB: serial: opticon: add write support") Cc: stable stable@vger.kernel.org # 2.6.30: xxx: USB: serial: opticon: add chars_in_buffer() implementation Signed-off-by: Johan Hovold johan@kernel.org

Reviewed-by: Greg Kroah-Hartman gregkh@linuxfoundation.org