Hi Shaun, kernel test robot noticed the following build warnings: [auto build test WARNING on netfilter-nf/main] [also build test WARNING on linus/master v6.16 next-20250725] [cannot apply to nf-next/master horms-ipvs/master] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Shaun-Brady/Add-test-for-nft_max_table_jumps_netns-sysctl/20250728-120528 base: https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf.git main patch link: https://lore.kernel.org/r/20250728040315.1014454-1-brady.1345%40gmail.com patch subject: [PATCH v6 1/2] netfilter: nf_tables: Implement jump limit for nft_table_validate config: csky-randconfig-001-20250728 (https://download.01.org/0day-ci/archive/20250728/202507281408.4TSYx6Hl-lkp@xxxxxxxxx/config) compiler: csky-linux-gcc (GCC) 10.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250728/202507281408.4TSYx6Hl-lkp@xxxxxxxxx/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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202507281408.4TSYx6Hl-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from include/net/net_namespace.h:25, from include/linux/inet.h:42, from fs/nfs/localio.c:15: >> include/net/netns/netfilter.h:37:2: warning: 'unused' attribute ignored [-Wattributes] 37 | u32 nf_max_table_jumps_netns __maybe_unused; | ^~~ -- In file included from include/net/net_namespace.h:25, from include/linux/inet.h:42, from include/linux/sunrpc/msg_prot.h:205, from include/linux/sunrpc/clnt.h:19, from fs/nfs/nfs4proc.c:45: >> include/net/netns/netfilter.h:37:2: warning: 'unused' attribute ignored [-Wattributes] 37 | u32 nf_max_table_jumps_netns __maybe_unused; | ^~~ fs/nfs/nfs4proc.c: In function 'nfs4_proc_create_session': fs/nfs/nfs4proc.c:9534:12: warning: variable 'ptr' set but not used [-Wunused-but-set-variable] 9534 | unsigned *ptr; | ^~~ -- In file included from include/net/net_namespace.h:25, from include/linux/inet.h:42, from include/linux/sunrpc/msg_prot.h:205, from include/linux/sunrpc/auth.h:14, from include/linux/nfs_fs.h:31, from fs/nfs/flexfilelayout/flexfilelayout.c:10: >> include/net/netns/netfilter.h:37:2: warning: 'unused' attribute ignored [-Wattributes] 37 | u32 nf_max_table_jumps_netns __maybe_unused; | ^~~ fs/nfs/flexfilelayout/flexfilelayout.c: In function 'ff_layout_io_track_ds_error': fs/nfs/flexfilelayout/flexfilelayout.c:1312:6: warning: variable 'err' set but not used [-Wunused-but-set-variable] 1312 | int err; | ^~~ -- In file included from include/net/net_namespace.h:25, from include/linux/inet.h:42, from include/linux/sunrpc/msg_prot.h:205, from include/linux/sunrpc/auth.h:14, from include/linux/nfs_fs.h:31, from fs/nfs/flexfilelayout/flexfilelayoutdev.c:10: >> include/net/netns/netfilter.h:37:2: warning: 'unused' attribute ignored [-Wattributes] 37 | u32 nf_max_table_jumps_netns __maybe_unused; | ^~~ fs/nfs/flexfilelayout/flexfilelayoutdev.c: In function 'nfs4_ff_alloc_deviceid_node': fs/nfs/flexfilelayout/flexfilelayoutdev.c:56:9: warning: variable 'ret' set but not used [-Wunused-but-set-variable] 56 | int i, ret = -ENOMEM; | ^~~ -- In file included from include/net/net_namespace.h:25, from include/linux/inet.h:42, from include/linux/sunrpc/msg_prot.h:205, from include/linux/sunrpc/clnt.h:19, from nfs4proc.c:45: >> include/net/netns/netfilter.h:37:2: warning: 'unused' attribute ignored [-Wattributes] 37 | u32 nf_max_table_jumps_netns __maybe_unused; | ^~~ nfs4proc.c: In function 'nfs4_proc_create_session': nfs4proc.c:9534:12: warning: variable 'ptr' set but not used [-Wunused-but-set-variable] 9534 | unsigned *ptr; | ^~~ -- In file included from include/net/net_namespace.h:25, from include/linux/inet.h:42, from include/linux/sunrpc/msg_prot.h:205, from include/linux/sunrpc/auth.h:14, from include/linux/nfs_fs.h:31, from flexfilelayout/flexfilelayout.c:10: >> include/net/netns/netfilter.h:37:2: warning: 'unused' attribute ignored [-Wattributes] 37 | u32 nf_max_table_jumps_netns __maybe_unused; | ^~~ flexfilelayout/flexfilelayout.c: In function 'ff_layout_io_track_ds_error': flexfilelayout/flexfilelayout.c:1312:6: warning: variable 'err' set but not used [-Wunused-but-set-variable] 1312 | int err; | ^~~ -- In file included from include/net/net_namespace.h:25, from include/linux/inet.h:42, from include/linux/sunrpc/msg_prot.h:205, from include/linux/sunrpc/auth.h:14, from include/linux/nfs_fs.h:31, from flexfilelayout/flexfilelayoutdev.c:10: >> include/net/netns/netfilter.h:37:2: warning: 'unused' attribute ignored [-Wattributes] 37 | u32 nf_max_table_jumps_netns __maybe_unused; | ^~~ flexfilelayout/flexfilelayoutdev.c: In function 'nfs4_ff_alloc_deviceid_node': flexfilelayout/flexfilelayoutdev.c:56:9: warning: variable 'ret' set but not used [-Wunused-but-set-variable] 56 | int i, ret = -ENOMEM; | ^~~ vim +/unused +37 include/net/netns/netfilter.h 10 11 struct netns_nf { 12 #if defined CONFIG_PROC_FS 13 struct proc_dir_entry *proc_netfilter; 14 #endif 15 const struct nf_logger __rcu *nf_loggers[NFPROTO_NUMPROTO]; 16 #ifdef CONFIG_SYSCTL 17 struct ctl_table_header *nf_log_dir_header; 18 struct ctl_table_header *nf_limit_control_dir_header; 19 #ifdef CONFIG_LWTUNNEL 20 struct ctl_table_header *nf_lwtnl_dir_header; 21 #endif 22 #endif 23 struct nf_hook_entries __rcu *hooks_ipv4[NF_INET_NUMHOOKS]; 24 struct nf_hook_entries __rcu *hooks_ipv6[NF_INET_NUMHOOKS]; 25 #ifdef CONFIG_NETFILTER_FAMILY_ARP 26 struct nf_hook_entries __rcu *hooks_arp[NF_ARP_NUMHOOKS]; 27 #endif 28 #ifdef CONFIG_NETFILTER_FAMILY_BRIDGE 29 struct nf_hook_entries __rcu *hooks_bridge[NF_INET_NUMHOOKS]; 30 #endif 31 #if IS_ENABLED(CONFIG_NF_DEFRAG_IPV4) 32 unsigned int defrag_ipv4_users; 33 #endif 34 #if IS_ENABLED(CONFIG_NF_DEFRAG_IPV6) 35 unsigned int defrag_ipv6_users; 36 #endif > 37 u32 nf_max_table_jumps_netns __maybe_unused; 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