Re: [PATCH nf-next] netfilter: flowtable: teardown flow reaching bridge port on fdb updates

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

Hi Pablo,

kernel test robot noticed the following build errors:

[auto build test ERROR on nf-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/Pablo-Neira-Ayuso/netfilter-flowtable-teardown-flow-reaching-bridge-port-on-fdb-updates/20261014-230256
base:   https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next.git main
patch link:    https://lore.kernel.org/r/20261014210256.1573072-1-pablo%40netfilter.org
patch subject: [PATCH nf-next] netfilter: flowtable: teardown flow reaching bridge port on fdb updates
config: hexagon-randconfig-1000-20261015 (https://download.01.org/0day-ci/archive/20261015/202610152010.2EqEudOw-lkp@intel.com/config)
compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project 6719b9e31d6a93099612c474eec76d9f41d0275a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261015/202610152010.2EqEudOw-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202610152010.2EqEudOw-lkp@intel.com/

All errors (new ones prefixed by >>):

>> net/bridge/br_nf_utils.c:32:6: error: assigning to 'const struct net_bridge_port *' from incompatible type 'typeof_unqual (f->dst)' (aka 'struct net_bridge_dst')
      32 |         dst = READ_ONCE(f->dst);
         |             ^ ~~~~~~~~~~~~~~~~~
   1 error generated.


vim +32 net/bridge/br_nf_utils.c

     8	
     9	static bool nf_br_fdb_valid_dst(struct net *net, int ifindex,
    10					const unsigned char *addr, __u16 vid)
    11	{
    12		const struct net_bridge_port *dst;
    13		struct net_device *dev, *upper;
    14		struct net_bridge_fdb_entry *f;
    15		struct net_bridge *br;
    16	
    17		rcu_read_lock();
    18		dev = dev_get_by_index_rcu(net, ifindex);
    19		if (!dev || !netif_is_bridge_port(dev))
    20			goto out;
    21	
    22		upper = netdev_master_upper_dev_get_rcu(dev);
    23		if (!upper)
    24			goto out;
    25	
    26		br = netdev_priv(upper);
    27	
    28		f = br_fdb_find_rcu(br, addr, vid);
    29		if (!f)
    30			goto out;
    31	
  > 32		dst = READ_ONCE(f->dst);
    33		if (dst && dst->dev->ifindex == ifindex) {
    34			rcu_read_unlock();
    35			return true;
    36		}
    37	out:
    38		rcu_read_unlock();
    39	
    40		return false;
    41	}
    42	

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