tree: https://git.kernel.org/pub/scm/linux/kernel/git/toke/linux.git xdp-queueing-02 head: 26dde94b299bc277f7a99a99ba64b4363964e833 commit: 34cc5abfbae0dfcb6967c54cb80f7595bc9c5c37 [5/11] Add a PIFO map type for queueing packets config: i386-randconfig-a006 (https://download.01.org/0day-ci/archive/20220214/202202140559.L2j44zUI-lk...) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project ea071884b0cc7210b3cc5fe858f0e892a779a23b) 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/toke/linux.git/commit/?id... git remote add toke https://git.kernel.org/pub/scm/linux/kernel/git/toke/linux.git git fetch --no-tags toke xdp-queueing-02 git checkout 34cc5abfbae0dfcb6967c54cb80f7595bc9c5c37 # 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=i386 SHELL=/bin/bash net/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All error/warnings (new ones prefixed by >>): In file included from net/socket.c:55: In file included from include/linux/bpf-cgroup.h:5: struct xdp_frame *pifo_map_dequeue(struct bpf_map *map, u64 flags) ^ include/linux/bpf.h:1966:1: note: declare 'static' if the function is not intended to be used outside of this translation unit struct xdp_frame *pifo_map_dequeue(struct bpf_map *map, u64 flags) ^ static net/socket.c:2206:6: warning: variable 'max_optlen' set but not used [-Wunused-but-set-variable] int max_optlen; ^ 2 warnings generated. -- In file included from net/core/sock.c:133: In file included from include/linux/filter.h:9: struct xdp_frame *pifo_map_dequeue(struct bpf_map *map, u64 flags) ^ include/linux/bpf.h:1966:1: note: declare 'static' if the function is not intended to be used outside of this translation unit struct xdp_frame *pifo_map_dequeue(struct bpf_map *map, u64 flags) ^ static 1 warning generated. -- In file included from net/core/dev.c:95: struct xdp_frame *pifo_map_dequeue(struct bpf_map *map, u64 flags) ^ include/linux/bpf.h:1966:1: note: declare 'static' if the function is not intended to be used outside of this translation unit struct xdp_frame *pifo_map_dequeue(struct bpf_map *map, u64 flags) ^ static net/core/dev.c:4971:1: warning: unused function 'sch_handle_ingress' [-Wunused-function] sch_handle_ingress(struct sk_buff *skb, struct packet_type **pt_prev, int *ret, ^ net/core/dev.c:5120:19: warning: unused function 'nf_ingress' [-Wunused-function] static inline int nf_ingress(struct sk_buff *skb, struct packet_type **pt_prev, ^ 3 warnings generated. -- In file included from net/core/net-traces.c:35: In file included from include/trace/events/tcp.h:12: In file included from include/net/tcp.h:35: In file included from include/net/sock_reuseport.h:5: In file included from include/linux/filter.h:9: struct xdp_frame *pifo_map_dequeue(struct bpf_map *map, u64 flags) ^ include/linux/bpf.h:1966:1: note: declare 'static' if the function is not intended to be used outside of this translation unit struct xdp_frame *pifo_map_dequeue(struct bpf_map *map, u64 flags) ^ static In file included from net/core/net-traces.c:50: In file included from include/trace/events/neigh.h:255: In file included from include/trace/define_trace.h:102: In file included from include/trace/trace_events.h:873: include/trace/events/neigh.h:42:20: warning: variable 'pin6' set but not used [-Wunused-but-set-variable] struct in6_addr *pin6; ^ In file included from net/core/net-traces.c:50: In file included from include/trace/events/neigh.h:255: In file included from include/trace/define_trace.h:103: In file included from include/trace/perf.h:107: include/trace/events/neigh.h:42:20: warning: variable 'pin6' set but not used [-Wunused-but-set-variable] struct in6_addr *pin6; ^ 3 warnings generated. -- In file included from net/ipv4/route.c:95: In file included from include/net/tcp.h:35: In file included from include/net/sock_reuseport.h:5: In file included from include/linux/filter.h:9: struct xdp_frame *pifo_map_dequeue(struct bpf_map *map, u64 flags) ^ include/linux/bpf.h:1966:1: note: declare 'static' if the function is not intended to be used outside of this translation unit struct xdp_frame *pifo_map_dequeue(struct bpf_map *map, u64 flags) ^ static net/ipv4/route.c:869:6: warning: variable 'log_martians' set but not used [-Wunused-but-set-variable] int log_martians; ^ 2 warnings generated. -- In file included from net/ipv4/tcp_output.c:40: In file included from include/net/tcp.h:35: In file included from include/net/sock_reuseport.h:5: In file included from include/linux/filter.h:9: struct xdp_frame *pifo_map_dequeue(struct bpf_map *map, u64 flags) ^ include/linux/bpf.h:1966:1: note: declare 'static' if the function is not intended to be used outside of this translation unit struct xdp_frame *pifo_map_dequeue(struct bpf_map *map, u64 flags) ^ static net/ipv4/tcp_output.c:188:3: warning: result of comparison of constant -1 with expression of type 'u8' (aka 'unsigned char') is always false [-Wtautological-constant-out-of-range-compare] NET_ADD_STATS(sock_net(sk), LINUX_MIB_TCPACKCOMPRESSED, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/net/ip.h:292:41: note: expanded from macro 'NET_ADD_STATS' #define NET_ADD_STATS(net, field, adnd) SNMP_ADD_STATS((net)->mib.net_statistics, field, adnd) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/net/snmp.h:143:4: note: expanded from macro 'SNMP_ADD_STATS' this_cpu_add(mib->mibs[field], addend) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:509:33: note: expanded from macro 'this_cpu_add' #define this_cpu_add(pcp, val) __pcpu_size_call(this_cpu_add_, pcp, val) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) <scratch space>:148:1: note: expanded from here this_cpu_add_4 ^ arch/x86/include/asm/percpu.h:268:34: note: expanded from macro 'this_cpu_add_4' #define this_cpu_add_4(pcp, val) percpu_add_op(4, volatile, (pcp), val) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/x86/include/asm/percpu.h:127:31: note: expanded from macro 'percpu_add_op' ((val) == 1 || (val) == -1)) ? \ ~~~~~ ^ ~~ 2 warnings generated. -- In file included from net/netfilter/ipvs/ip_vs_core.c:34: In file included from include/net/tcp.h:35: In file included from include/net/sock_reuseport.h:5: In file included from include/linux/filter.h:9: struct xdp_frame *pifo_map_dequeue(struct bpf_map *map, u64 flags) ^ include/linux/bpf.h:1966:1: note: declare 'static' if the function is not intended to be used outside of this translation unit struct xdp_frame *pifo_map_dequeue(struct bpf_map *map, u64 flags) ^ static net/netfilter/ipvs/ip_vs_core.c:1596:8: warning: variable 'outer_proto' set but not used [-Wunused-but-set-variable] char *outer_proto = "IPIP"; ^ 2 warnings generated. -- In file included from net/netfilter/ipvs/ip_vs_xmit.c:33: In file included from include/net/tcp.h:35: In file included from include/net/sock_reuseport.h:5: In file included from include/linux/filter.h:9: struct xdp_frame *pifo_map_dequeue(struct bpf_map *map, u64 flags) ^ include/linux/bpf.h:1966:1: note: declare 'static' if the function is not intended to be used outside of this translation unit struct xdp_frame *pifo_map_dequeue(struct bpf_map *map, u64 flags) ^ static net/netfilter/ipvs/ip_vs_xmit.c:107:1: warning: unused function '__mtu_check_toobig_v6' [-Wunused-function] __mtu_check_toobig_v6(const struct sk_buff *skb, u32 mtu) ^ 2 warnings generated. -- In file included from net/mptcp/options.c:11: In file included from include/net/tcp.h:35: In file included from include/net/sock_reuseport.h:5: In file included from include/linux/filter.h:9: struct xdp_frame *pifo_map_dequeue(struct bpf_map *map, u64 flags) ^ include/linux/bpf.h:1966:1: note: declare 'static' if the function is not intended to be used outside of this translation unit struct xdp_frame *pifo_map_dequeue(struct bpf_map *map, u64 flags) ^ static net/mptcp/options.c:554:21: warning: parameter 'remaining' set but not used [-Wunused-but-set-parameter] unsigned int remaining, ^ 2 warnings generated. -- -- .. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org