Hi Lorenzo, I love your patch! Perhaps something to improve: [auto build test WARNING on bpf-next/master] url: https://github.com/0day-ci/linux/commits/Lorenzo-Bianconi/mvneta-introduce-XDP-multi-buffer-support/20210813-195127 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master config: i386-randconfig-s001-20210813 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-348-gf0e6938b-dirty # https://github.com/0day-ci/linux/commit/cc503b94d65009817ca899171fbd0514046415f2 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Lorenzo-Bianconi/mvneta-introduce-XDP-multi-buffer-support/20210813-195127 git checkout cc503b94d65009817ca899171fbd0514046415f2 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash net/core/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) net/core/filter.c:431:33: sparse: sparse: subtraction of functions? Share your drugs net/core/filter.c:434:33: sparse: sparse: subtraction of functions? Share your drugs net/core/filter.c:437:33: sparse: sparse: subtraction of functions? Share your drugs net/core/filter.c:440:33: sparse: sparse: subtraction of functions? Share your drugs net/core/filter.c:443:33: sparse: sparse: subtraction of functions? Share your drugs net/core/filter.c:517:27: sparse: sparse: subtraction of functions? Share your drugs net/core/filter.c:520:27: sparse: sparse: subtraction of functions? Share your drugs net/core/filter.c:523:27: sparse: sparse: subtraction of functions? Share your drugs net/core/filter.c:1411:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct sock_filter const *filter @@ got struct sock_filter [noderef] __user *filter @@ net/core/filter.c:1411:39: sparse: expected struct sock_filter const *filter net/core/filter.c:1411:39: sparse: got struct sock_filter [noderef] __user *filter net/core/filter.c:1489:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct sock_filter const *filter @@ got struct sock_filter [noderef] __user *filter @@ net/core/filter.c:1489:39: sparse: expected struct sock_filter const *filter net/core/filter.c:1489:39: sparse: got struct sock_filter [noderef] __user *filter net/core/filter.c:2296:45: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected restricted __be32 [usertype] daddr @@ got unsigned int [usertype] ipv4_nh @@ net/core/filter.c:2296:45: sparse: expected restricted __be32 [usertype] daddr net/core/filter.c:2296:45: sparse: got unsigned int [usertype] ipv4_nh >> net/core/filter.c:3801:29: sparse: sparse: symbol 'bpf_xdp_get_buff_len_proto' was not declared. Should it be static? net/core/filter.c:8113:27: sparse: sparse: subtraction of functions? Share your drugs net/core/filter.c:8116:27: sparse: sparse: subtraction of functions? Share your drugs net/core/filter.c:8119:27: sparse: sparse: subtraction of functions? Share your drugs net/core/filter.c:9968:31: sparse: sparse: symbol 'sk_filter_verifier_ops' was not declared. Should it be static? net/core/filter.c:9975:27: sparse: sparse: symbol 'sk_filter_prog_ops' was not declared. Should it be static? net/core/filter.c:9979:31: sparse: sparse: symbol 'tc_cls_act_verifier_ops' was not declared. Should it be static? net/core/filter.c:9988:27: sparse: sparse: symbol 'tc_cls_act_prog_ops' was not declared. Should it be static? net/core/filter.c:9992:31: sparse: sparse: symbol 'xdp_verifier_ops' was not declared. Should it be static? net/core/filter.c:10003:31: sparse: sparse: symbol 'cg_skb_verifier_ops' was not declared. Should it be static? net/core/filter.c:10009:27: sparse: sparse: symbol 'cg_skb_prog_ops' was not declared. Should it be static? net/core/filter.c:10013:31: sparse: sparse: symbol 'lwt_in_verifier_ops' was not declared. Should it be static? net/core/filter.c:10019:27: sparse: sparse: symbol 'lwt_in_prog_ops' was not declared. Should it be static? net/core/filter.c:10023:31: sparse: sparse: symbol 'lwt_out_verifier_ops' was not declared. Should it be static? net/core/filter.c:10029:27: sparse: sparse: symbol 'lwt_out_prog_ops' was not declared. Should it be static? net/core/filter.c:10033:31: sparse: sparse: symbol 'lwt_xmit_verifier_ops' was not declared. Should it be static? net/core/filter.c:10040:27: sparse: sparse: symbol 'lwt_xmit_prog_ops' was not declared. Should it be static? net/core/filter.c:10044:31: sparse: sparse: symbol 'lwt_seg6local_verifier_ops' was not declared. Should it be static? net/core/filter.c:10050:27: sparse: sparse: symbol 'lwt_seg6local_prog_ops' was not declared. Should it be static? net/core/filter.c:10054:31: sparse: sparse: symbol 'cg_sock_verifier_ops' was not declared. Should it be static? net/core/filter.c:10060:27: sparse: sparse: symbol 'cg_sock_prog_ops' was not declared. Should it be static? net/core/filter.c:10063:31: sparse: sparse: symbol 'cg_sock_addr_verifier_ops' was not declared. Should it be static? net/core/filter.c:10069:27: sparse: sparse: symbol 'cg_sock_addr_prog_ops' was not declared. Should it be static? net/core/filter.c:10072:31: sparse: sparse: symbol 'sock_ops_verifier_ops' was not declared. Should it be static? net/core/filter.c:10078:27: sparse: sparse: symbol 'sock_ops_prog_ops' was not declared. Should it be static? net/core/filter.c:10081:31: sparse: sparse: symbol 'sk_skb_verifier_ops' was not declared. Should it be static? net/core/filter.c:10088:27: sparse: sparse: symbol 'sk_skb_prog_ops' was not declared. Should it be static? net/core/filter.c:10091:31: sparse: sparse: symbol 'sk_msg_verifier_ops' was not declared. Should it be static? net/core/filter.c:10098:27: sparse: sparse: symbol 'sk_msg_prog_ops' was not declared. Should it be static? net/core/filter.c:10101:31: sparse: sparse: symbol 'flow_dissector_verifier_ops' was not declared. Should it be static? net/core/filter.c:10107:27: sparse: sparse: symbol 'flow_dissector_prog_ops' was not declared. Should it be static? net/core/filter.c:10434:31: sparse: sparse: symbol 'sk_reuseport_verifier_ops' was not declared. Should it be static? net/core/filter.c:10440:27: sparse: sparse: symbol 'sk_reuseport_prog_ops' was not declared. Should it be static? net/core/filter.c:10616:27: sparse: sparse: symbol 'sk_lookup_prog_ops' was not declared. Should it be static? net/core/filter.c:10620:31: sparse: sparse: symbol 'sk_lookup_verifier_ops' was not declared. Should it be static? net/core/filter.c:246:32: sparse: sparse: cast to restricted __be16 net/core/filter.c:273:32: sparse: sparse: cast to restricted __be32 net/core/filter.c:1910:43: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected restricted __wsum [usertype] diff @@ got unsigned long long [usertype] to @@ net/core/filter.c:1910:43: sparse: expected restricted __wsum [usertype] diff net/core/filter.c:1910:43: sparse: got unsigned long long [usertype] to net/core/filter.c:1913:36: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected restricted __be16 [usertype] old @@ got unsigned long long [usertype] from @@ net/core/filter.c:1913:36: sparse: expected restricted __be16 [usertype] old net/core/filter.c:1913:36: sparse: got unsigned long long [usertype] from net/core/filter.c:1913:42: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected restricted __be16 [usertype] new @@ got unsigned long long [usertype] to @@ net/core/filter.c:1913:42: sparse: expected restricted __be16 [usertype] new net/core/filter.c:1913:42: sparse: got unsigned long long [usertype] to net/core/filter.c:1916:36: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected restricted __be32 [usertype] from @@ got unsigned long long [usertype] from @@ net/core/filter.c:1916:36: sparse: expected restricted __be32 [usertype] from net/core/filter.c:1916:36: sparse: got unsigned long long [usertype] from net/core/filter.c:1916:42: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected restricted __be32 [usertype] to @@ got unsigned long long [usertype] to @@ net/core/filter.c:1916:42: sparse: expected restricted __be32 [usertype] to net/core/filter.c:1916:42: sparse: got unsigned long long [usertype] to net/core/filter.c:1961:59: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected restricted __wsum [usertype] diff @@ got unsigned long long [usertype] to @@ net/core/filter.c:1961:59: sparse: expected restricted __wsum [usertype] diff net/core/filter.c:1961:59: sparse: got unsigned long long [usertype] to net/core/filter.c:1964:52: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected restricted __be16 [usertype] from @@ got unsigned long long [usertype] from @@ net/core/filter.c:1964:52: sparse: expected restricted __be16 [usertype] from net/core/filter.c:1964:52: sparse: got unsigned long long [usertype] from net/core/filter.c:1964:58: sparse: sparse: incorrect type in argument 4 (different base types) @@ expected restricted __be16 [usertype] to @@ got unsigned long long [usertype] to @@ net/core/filter.c:1964:58: sparse: expected restricted __be16 [usertype] to net/core/filter.c:1964:58: sparse: got unsigned long long [usertype] to net/core/filter.c:1967:52: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected restricted __be32 [usertype] from @@ got unsigned long long [usertype] from @@ net/core/filter.c:1967:52: sparse: expected restricted __be32 [usertype] from net/core/filter.c:1967:52: sparse: got unsigned long long [usertype] from net/core/filter.c:1967:58: sparse: sparse: incorrect type in argument 4 (different base types) @@ expected restricted __be32 [usertype] to @@ got unsigned long long [usertype] to @@ net/core/filter.c:1967:58: sparse: expected restricted __be32 [usertype] to net/core/filter.c:1967:58: sparse: got unsigned long long [usertype] to net/core/filter.c:2013:28: sparse: sparse: incorrect type in return expression (different base types) @@ expected unsigned long long @@ got restricted __wsum @@ net/core/filter.c:2013:28: sparse: expected unsigned long long net/core/filter.c:2013:28: sparse: got restricted __wsum net/core/filter.c:2035:35: sparse: sparse: incorrect type in return expression (different base types) @@ expected unsigned long long @@ got restricted __wsum [usertype] csum @@ net/core/filter.c:2035:35: sparse: expected unsigned long long net/core/filter.c:2035:35: sparse: got restricted __wsum [usertype] csum net/core/filter.c: note: in included file (through include/net/ip.h): include/net/route.h:372:48: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected unsigned int [usertype] key @@ got restricted __be32 [usertype] daddr @@ include/net/route.h:372:48: sparse: expected unsigned int [usertype] key include/net/route.h:372:48: sparse: got restricted __be32 [usertype] daddr include/net/route.h:372:48: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected unsigned int [usertype] key @@ got restricted __be32 [usertype] daddr @@ include/net/route.h:372:48: sparse: expected unsigned int [usertype] key include/net/route.h:372:48: sparse: got restricted __be32 [usertype] daddr include/net/route.h:372:48: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected unsigned int [usertype] key @@ got restricted __be32 [usertype] daddr @@ include/net/route.h:372:48: sparse: expected unsigned int [usertype] key include/net/route.h:372:48: sparse: got restricted __be32 [usertype] daddr Please review and possibly fold the followup patch. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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