Hi,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on nf-next/master]

url:    https://github.com/0day-ci/linux/commits/wenxu-ucloud-cn/netfilter-Support-the-bridge-family-in-flow-table/20190830-172019
base:   https://kernel.googlesource.com/pub/scm/linux/kernel/git/pablo/nf-next.git master
config: x86_64-allmodconfig (attached as .config)
compiler: gcc-7 (Debian 7.4.0-11) 7.4.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

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

Note: it may well be a FALSE warning. FWIW you are at least aware of it now.
http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings

All warnings (new ones prefixed by >>):

   net/netfilter/nf_flow_table_ip.c: In function 'nf_flow_offload_ipv6_hook':
>> net/netfilter/nf_flow_table_ip.c:562:6: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized]
     int ret;
         ^~~
   net/netfilter/nf_flow_table_ip.c: In function 'nf_flow_offload_ip_hook':
   net/netfilter/nf_flow_table_ip.c:309:6: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized]
     int ret;
         ^~~

vim +/ret +562 net/netfilter/nf_flow_table_ip.c

   551	
   552	unsigned int
   553	nf_flow_offload_ipv6_hook(void *priv, struct sk_buff *skb,
   554				  const struct nf_hook_state *state)
   555	{
   556		struct flow_offload_tuple_rhash *tuplehash;
   557		struct nf_flowtable *flow_table = priv;
   558		int family = flow_table->type->family;
   559		struct flow_offload_tuple tuple = {};
   560		enum flow_offload_tuple_dir dir;
   561		struct flow_offload *flow;
 > 562		int ret;

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation