linux-kernel - [saeed:net-next 612/668] net/openvswitch/flow.c:915:19: warning: variable 'zone' is uninitialized when used here

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Date:   Wed, 1 Dec 2021 09:24:22 +0800
From:   kernel test robot <lkp@...el.com>
To:     Paul Blakey <paulb@...dia.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, Saeed Mahameed <saeedm@...dia.com>,
        Oz Shlomo <ozsh@...dia.com>
Subject: [saeed:net-next 612/668] net/openvswitch/flow.c:915:19: warning:
 variable 'zone' is uninitialized when used here

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux.git net-next
head:   960dff4cc0bfc59cc7a168c8f1e1f58c93f6a10d
commit: dff3da2f663fdac40a3d72b85ee3b5f89e88501f [612/668] net: openvswitch: Fix matching zone id for invalid conns arriving from tc
config: x86_64-randconfig-r022-20211130 (https://download.01.org/0day-ci/archive/20211201/202112010929.w3wcdBWp-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 25eb7fa01d7ebbe67648ea03841cda55b4239ab2)
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://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux.git/commit/?id=dff3da2f663fdac40a3d72b85ee3b5f89e88501f
        git remote add saeed https://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux.git
        git fetch --no-tags saeed net-next
        git checkout dff3da2f663fdac40a3d72b85ee3b5f89e88501f
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash net/openvswitch/

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

All warnings (new ones prefixed by >>):

>> net/openvswitch/flow.c:915:19: warning: variable 'zone' is uninitialized when used here [-Wuninitialized]
                           key->ct_zone = zone;
                                          ^~~~
   net/openvswitch/flow.c:864:10: note: initialize the variable 'zone' to silence this warning
           u16 zone;
                   ^
                    = 0
   1 warning generated.


vim +/zone +915 net/openvswitch/flow.c

   910	
   911		err = key_extract(skb, key);
   912		if (!err) {
   913			ovs_ct_fill_key(skb, key, post_ct);   /* Must be after key_extract(). */
   914			if (post_ct && !skb_get_nfct(skb))
 > 915				key->ct_zone = zone;
   916		}
   917		return err;
   918	}
   919	

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