xen-netback: fix possible format string flaw

This makes sure a format string cannot accidentally leak into the
kthread_run() call.

Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 file changed