tree: https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git pending-4.19 head: da0ab6f9b4814a4a16e1999273d7dbd1a348314b commit: 8d8bd352b9fe3f9dc4e67930a5b26074f06a4d67 [42/61] net: qualcomm: rmnet: Update rmnet device MTU based on real device config: i386-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git/c... git remote add sashal-linux-stable https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git git fetch --no-tags sashal-linux-stable pending-4.19 git checkout 8d8bd352b9fe3f9dc4e67930a5b26074f06a4d67 # save the attached .config to linux build tree make W=1 ARCH=i386 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 >>): In file included from include/uapi/linux/neighbour.h:6, from include/linux/netdevice.h:50, from include/linux/etherdevice.h:26, from drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c:17: drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c: In function 'rmnet_vnd_newlink': 277 | NL_SET_ERR_MSG_MOD(extack, "Invalid MTU on real dev"); | ^~~~~~ include/linux/netlink.h:89:38: note: in definition of macro 'NL_SET_ERR_MSG' 89 | struct netlink_ext_ack *__extack = (extack); \ | ^~~~~~ drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c:277:3: note: in expansion of macro 'NL_SET_ERR_MSG_MOD' 277 | NL_SET_ERR_MSG_MOD(extack, "Invalid MTU on real dev"); | ^~~~~~~~~~~~~~~~~~ drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c:277:22: note: each undeclared identifier is reported only once for each function it appears in 277 | NL_SET_ERR_MSG_MOD(extack, "Invalid MTU on real dev"); | ^~~~~~ include/linux/netlink.h:89:38: note: in definition of macro 'NL_SET_ERR_MSG' 89 | struct netlink_ext_ack *__extack = (extack); \ | ^~~~~~ drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c:277:3: note: in expansion of macro 'NL_SET_ERR_MSG_MOD' 277 | NL_SET_ERR_MSG_MOD(extack, "Invalid MTU on real dev"); | ^~~~~~~~~~~~~~~~~~ vim +/extack +277 drivers/net/ethernet/qualcomm/rmnet/rmnet_vnd.c 252 253 int rmnet_vnd_newlink(u8 id, struct net_device *rmnet_dev, 254 struct rmnet_port *port, 255 struct net_device *real_dev, 256 struct rmnet_endpoint *ep) 257 { 258 struct rmnet_priv *priv = netdev_priv(rmnet_dev); 259 u32 headroom; 260 int rc; 261 262 if (ep->egress_dev) 263 return -EINVAL; 264 265 if (rmnet_get_endpoint(port, id)) 266 return -EBUSY; 267 268 rmnet_dev->hw_features = NETIF_F_RXCSUM; 269 rmnet_dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; 270 rmnet_dev->hw_features |= NETIF_F_SG; 271 272 priv->real_dev = real_dev; 273 274 headroom = rmnet_vnd_headroom(port); 275 276 if (rmnet_vnd_change_mtu(rmnet_dev, real_dev->mtu - headroom)) { 278 return -EINVAL; 279 } 280 281 rc = register_netdevice(rmnet_dev); 282 if (!rc) { 283 ep->egress_dev = rmnet_dev; 284 ep->mux_id = id; 285 port->nr_rmnet_devs++; 286 287 rmnet_dev->rtnl_link_ops = &rmnet_link_ops; 288 289 priv->mux_id = id; 290 291 netdev_dbg(rmnet_dev, "rmnet dev created\n"); 292 } 293 294 return rc; 295 } 296 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org