System calls should be USER. So change the BH to USER for
UDP*_INC_STATS_BH().
Signed-off-by: NWang Chen <wangchen@cn.fujitsu.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>