Re: [RFC net-next 1/2] rtnetlink: Add new RTM_GETSYNCESTATE message to get SyncE status

[kernel test robot <lkp@intel.com>]

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Hi Maciej,

[FYI, it's a private test report for your RFC patch.]
[auto build test WARNING on net-next/master]

url:    https://github.com/0day-ci/linux/commits/Maciej-Machnikowski/Add-RTNL-interface-for-SyncE/20210829-052844
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git c77225119daa0ca0a9c6c007945c0a87b3e4a2e8
config: hexagon-randconfig-r041-20210829 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 4e1a164d7bd53653f79decc121afe784d2fde0a7)
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
        # https://github.com/0day-ci/linux/commit/ff940b657759b1ab4cc875cb16b9de3c60cc7ae7
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Maciej-Machnikowski/Add-RTNL-interface-for-SyncE/20210829-052844
        git checkout ff940b657759b1ab4cc875cb16b9de3c60cc7ae7
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=hexagon 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> net/core/rtnetlink.c:5537:15: warning: variable 'filter_mask' is uninitialized when used here [-Wuninitialized]
                                       NULL, filter_mask);
                                             ^~~~~~~~~~~
   net/core/rtnetlink.c:5519:17: note: initialize the variable 'filter_mask' to silence this warning
           u32 filter_mask;
                          ^
                           = 0
   1 warning generated.


vim +/filter_mask +5537 net/core/rtnetlink.c

  5511	
  5512	static int rtnl_synce_state_get(struct sk_buff *skb, struct nlmsghdr *nlh,
  5513					struct netlink_ext_ack *extack)
  5514	{
  5515		struct net *net = sock_net(skb->sk);
  5516		struct if_synce_state_msg *state;
  5517		struct net_device *dev = NULL;
  5518		struct sk_buff *nskb;
  5519		u32 filter_mask;
  5520		int err;
  5521	
  5522		state = nlmsg_data(nlh);
  5523		if (state->ifindex > 0)
  5524			dev = __dev_get_by_index(net, state->ifindex);
  5525		else
  5526			return -EINVAL;
  5527	
  5528		nskb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
  5529		if (!nskb)
  5530			return -ENOBUFS;
  5531	
  5532		if (!dev)
  5533			return -ENODEV;
  5534	
  5535		err = rtnl_fill_synce_state(nskb, dev,
  5536					    NETLINK_CB(skb).portid, nlh->nlmsg_seq,
> 5537					    NULL, filter_mask);
  5538		if (err < 0)
  5539			kfree_skb(nskb);
  5540		else
  5541			err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid);
  5542	
  5543		return err;
  5544	}
  5545	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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