Hi Magnus, I love your patch! Yet something to improve: [auto build test ERROR on bpf-next/master] url: https://github.com/0day-ci/linux/commits/Magnus-Karlsson/xsk-support-shar... base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master config: alpha-allmodconfig (attached as .config) compiler: alpha-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=alpha If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): net/xdp/xsk_diag.c: In function 'xsk_diag_put_stats': 88 | du.n_fill_ring_empty = xs->umem ? xskq_nb_queue_empty_descs(xs->umem->fq) : 0; | ^~ vim +88 net/xdp/xsk_diag.c a36b38aa2af611 Björn Töpel 2019-01-24 80 0d80cb4612aa32 Ciara Loftus 2020-07-08 81 static int xsk_diag_put_stats(const struct xdp_sock *xs, struct sk_buff *nlskb) 0d80cb4612aa32 Ciara Loftus 2020-07-08 82 { 0d80cb4612aa32 Ciara Loftus 2020-07-08 83 struct xdp_diag_stats du = {}; 0d80cb4612aa32 Ciara Loftus 2020-07-08 84 0d80cb4612aa32 Ciara Loftus 2020-07-08 85 du.n_rx_dropped = xs->rx_dropped; 0d80cb4612aa32 Ciara Loftus 2020-07-08 86 du.n_rx_invalid = xskq_nb_invalid_descs(xs->rx); 0d80cb4612aa32 Ciara Loftus 2020-07-08 87 du.n_rx_full = xs->rx_queue_full; 0d80cb4612aa32 Ciara Loftus 2020-07-08 @88 du.n_fill_ring_empty = xs->umem ? xskq_nb_queue_empty_descs(xs->umem->fq) : 0; 0d80cb4612aa32 Ciara Loftus 2020-07-08 89 du.n_tx_invalid = xskq_nb_invalid_descs(xs->tx); 0d80cb4612aa32 Ciara Loftus 2020-07-08 90 du.n_tx_ring_empty = xskq_nb_queue_empty_descs(xs->tx); 0d80cb4612aa32 Ciara Loftus 2020-07-08 91 return nla_put(nlskb, XDP_DIAG_STATS, sizeof(du), &du); 0d80cb4612aa32 Ciara Loftus 2020-07-08 92 } 0d80cb4612aa32 Ciara Loftus 2020-07-08 93 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org