Hi Daniel, kernel test robot noticed the following build warnings: [auto build test WARNING on net-next/main] url: https://github.com/intel-lab-lkp/linux/commits/Daniel-Jurgens/virtio-pci-Expose-generic-device-capability-operations/20250828-024128 base: net-next/main patch link: https://lore.kernel.org/r/20250827183852.2471-7-danielj%40nvidia.com patch subject: [PATCH net-next 06/11] virtio_net: Implement layer 2 ethtool flow rules config: x86_64-randconfig-121-20250828 (https://download.01.org/0day-ci/archive/20250829/202508290631.baVQplwA-lkp@xxxxxxxxx/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250829/202508290631.baVQplwA-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202508290631.baVQplwA-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) drivers/net/virtio_net/virtio_net_ff.c: note: in included file (through include/linux/virtio_admin.h): include/uapi/linux/virtio_net_ff.h:47:48: sparse: sparse: array of flexible structures include/uapi/linux/virtio_net_ff.h:67:48: sparse: sparse: array of flexible structures drivers/net/virtio_net/virtio_net_ff.c:113:24: sparse: sparse: restricted __le32 degrades to integer >> drivers/net/virtio_net/virtio_net_ff.c:189:27: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [usertype] vq_index @@ got unsigned long long @@ drivers/net/virtio_net/virtio_net_ff.c:189:27: sparse: expected restricted __le16 [usertype] vq_index drivers/net/virtio_net/virtio_net_ff.c:189:27: sparse: got unsigned long long drivers/net/virtio_net/virtio_net_ff.c:380:24: sparse: sparse: restricted __le32 degrades to integer drivers/net/virtio_net/virtio_net_ff.c:509:13: sparse: sparse: restricted __le32 degrades to integer drivers/net/virtio_net/virtio_net_ff.c:509:13: sparse: sparse: cast to restricted __le32 drivers/net/virtio_net/virtio_net_ff.c:513:35: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le32 [usertype] groups_limit @@ got int @@ drivers/net/virtio_net/virtio_net_ff.c:513:35: sparse: expected restricted __le32 [usertype] groups_limit drivers/net/virtio_net/virtio_net_ff.c:513:35: sparse: got int vim +189 drivers/net/virtio_net/virtio_net_ff.c 163 164 static int insert_rule(struct virtnet_ff *ff, 165 struct virtnet_ethtool_rule *eth_rule, 166 u32 classifier_id, 167 const u8 *key, 168 size_t key_size) 169 { 170 struct ethtool_rx_flow_spec *fs = ð_rule->flow_spec; 171 struct virtio_net_resource_obj_ff_rule *ff_rule; 172 int err; 173 174 ff_rule = kzalloc(sizeof(*ff_rule) + key_size, GFP_KERNEL); 175 if (!ff_rule) { 176 err = -ENOMEM; 177 goto err_eth_rule; 178 } 179 /* 180 * Intentionally leave the priority as 0. All rules have the same 181 * priority. 182 */ 183 ff_rule->group_id = cpu_to_le32(VIRTNET_FF_ETHTOOL_GROUP_PRIORITY); 184 ff_rule->classifier_id = cpu_to_le32(classifier_id); 185 ff_rule->key_length = (u8)key_size; 186 ff_rule->action = fs->ring_cookie == RX_CLS_FLOW_DISC ? 187 VIRTIO_NET_FF_ACTION_DROP : 188 VIRTIO_NET_FF_ACTION_RX_VQ; > 189 ff_rule->vq_index = fs->ring_cookie != RX_CLS_FLOW_DISC ? 190 fs->ring_cookie : 0; 191 memcpy(&ff_rule->keys, key, key_size); 192 193 err = virtio_device_object_create(ff->vdev, 194 VIRTIO_NET_RESOURCE_OBJ_FF_RULE, 195 fs->location, 196 ff_rule, 197 sizeof(*ff_rule) + key_size); 198 if (err) 199 goto err_ff_rule; 200 201 eth_rule->classifier_id = classifier_id; 202 ff->ethtool.num_rules++; 203 kfree(ff_rule); 204 205 return 0; 206 207 err_ff_rule: 208 kfree(ff_rule); 209 err_eth_rule: 210 xa_erase(&ff->ethtool.rules, eth_rule->flow_spec.location); 211 kfree(eth_rule); 212 213 return err; 214 } 215 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
