On Thu, Jan 14, 2021 at 9:54 AM kernel test robot <lkp@xxxxxxxxx> wrote: > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > head: aa515cdce7a151dcc14b7600d33f1414c6fa32c9 > commit: b7a9e0da2d1c954b7c38217a29e002528b90d174 [2144/2798] net: switchdev: remove vid_begin -> vid_end range from VLAN objects > config: x86_64-randconfig-a004-20210114 (attached as .config) > compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 6077d55381a6aa3e947ef7abdc36a7515c598c8a) > 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 > # install x86_64 cross compiling tool for clang build > # apt-get install binutils-x86-64-linux-gnu > # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=b7a9e0da2d1c954b7c38217a29e002528b90d174 > git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git > git fetch --no-tags linux-next master > git checkout b7a9e0da2d1c954b7c38217a29e002528b90d174 > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp@xxxxxxxxx> > > All warnings (new ones prefixed by >>): > > >> drivers/net/ethernet/marvell/prestera/prestera_switchdev.c:1049:11: warning: variable 'vid' is uninitialized when used here [-Wuninitialized] > vid, flag_untagged, > ^~~ > drivers/net/ethernet/marvell/prestera/prestera_switchdev.c:1032:9: note: initialize the variable 'vid' to silence this warning > u16 vid; > ^ > = 0 > 1 warning generated. > > > vim +/vid +1049 drivers/net/ethernet/marvell/prestera/prestera_switchdev.c > > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1020 > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1021 static int prestera_port_vlans_add(struct prestera_port *port, > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1022 const struct switchdev_obj_port_vlan *vlan, > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1023 struct switchdev_trans *trans, > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1024 struct netlink_ext_ack *extack) > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1025 { > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1026 bool flag_untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED; > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1027 bool flag_pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID; > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1028 struct net_device *dev = vlan->obj.orig_dev; > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1029 struct prestera_bridge_port *br_port; > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1030 struct prestera_switch *sw = port->sw; > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1031 struct prestera_bridge *bridge; > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1032 u16 vid; > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1033 > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1034 if (netif_is_bridge_master(dev)) > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1035 return 0; > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1036 > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1037 if (switchdev_trans_ph_commit(trans)) > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1038 return 0; > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1039 > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1040 br_port = prestera_bridge_port_by_dev(sw->swdev, dev); > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1041 if (WARN_ON(!br_port)) > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1042 return -EINVAL; > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1043 > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1044 bridge = br_port->bridge; > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1045 if (!bridge->vlan_enabled) > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1046 return 0; > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1047 > b7a9e0da2d1c954b Vladimir Oltean 2021-01-09 1048 return prestera_bridge_port_vlan_add(port, br_port, > e1189d9a5fbec815 Vadym Kochan 2020-09-16 @1049 vid, flag_untagged, Currently vid is passed as garbage value. Is initializing vid = 0 and passing it to prestera_bridge_port_vlan_add() the right thing to do ? Or do we need to pass more appropriate values ? > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1050 flag_pvid, extack); > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1051 } > e1189d9a5fbec815 Vadym Kochan 2020-09-16 1052 > > :::::: The code at line 1049 was first introduced by commit > :::::: e1189d9a5fbec8153dbe03f3589bc2baa96694e2 net: marvell: prestera: Add Switchdev driver implementation > > :::::: TO: Vadym Kochan <vadym.kochan@xxxxxxxxxxx> > :::::: CC: David S. Miller <davem@xxxxxxxxxxxxx> > > --- > 0-DAY CI Kernel Test Service, Intel Corporation > https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
