Hi Mao, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on bpf-next/master] [also build test WARNING on bpf/master net/master net-next/master ipvs/master v5.7-rc2 next-20200423] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Mao-Wenan/Change-return-code-if-failed-to-load-object/20200424-025339 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master reproduce: # apt-get install sparse # sparse version: v0.6.1-191-gc51a0382-dirty make ARCH=x86_64 allmodconfig make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' :::::: branch date: 19 hours ago :::::: commit date: 19 hours ago If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> kernel/bpf/syscall.c:117:0: sparse: sparse: missing terminating " character kernel/bpf/syscall.c:118:0: sparse: sparse: missing terminating " character >> kernel/bpf/syscall.c:686:1: sparse: sparse: directive in macro's argument list kernel/bpf/syscall.c:772:1: sparse: sparse: directive in macro's argument list kernel/bpf/syscall.c:979:1: sparse: sparse: directive in macro's argument list kernel/bpf/syscall.c:1046:1: sparse: sparse: directive in macro's argument list kernel/bpf/syscall.c:1111:1: sparse: sparse: directive in macro's argument list kernel/bpf/syscall.c:1164:1: sparse: sparse: directive in macro's argument list kernel/bpf/syscall.c:1341:1: sparse: sparse: directive in macro's argument list kernel/bpf/syscall.c:1442:1: sparse: sparse: directive in macro's argument list kernel/bpf/syscall.c:1504:1: sparse: sparse: directive in macro's argument list kernel/bpf/syscall.c:1548:1: sparse: sparse: directive in macro's argument list kernel/bpf/syscall.c:1550:1: sparse: sparse: directive in macro's argument list kernel/bpf/syscall.c:1551:1: sparse: sparse: directive in macro's argument list >> kernel/bpf/syscall.c:116:17: sparse: sparse: macro "pr_warn" passed 2 arguments, but takes just 2 >> include/linux/bpf_types.h:7:1: sparse: sparse: No right hand side of ','-expression include/linux/bpf_types.h:7:1: sparse: sparse: Expected ; at end of statement include/linux/bpf_types.h:7:1: sparse: sparse: got [ include/linux/bpf_types.h:121:0: sparse: sparse: Expected } at end of compound statement include/linux/bpf_types.h:121:0: sparse: sparse: got end-of-input include/linux/bpf_types.h:121:0: sparse: sparse: Expected } at end of function include/linux/bpf_types.h:121:0: sparse: sparse: got end-of-input kernel/bpf/syscall.c:116:17: sparse: sparse: undefined identifier 'pr_warn' kernel/bpf/syscall.c:1560:21: sparse: sparse: undefined identifier 'bpf_prog_types' kernel/bpf/syscall.c:1560:21: sparse: sparse: undefined identifier 'bpf_prog_types' kernel/bpf/syscall.c:1562:16: sparse: sparse: undefined identifier 'bpf_prog_types' kernel/bpf/syscall.c:1562:16: sparse: sparse: undefined identifier 'bpf_prog_types' kernel/bpf/syscall.c:1562:16: sparse: sparse: undefined identifier 'bpf_prog_types' kernel/bpf/syscall.c:1562:16: sparse: sparse: undefined identifier 'bpf_prog_types' >> kernel/bpf/syscall.c:1562:16: sparse: sparse: cannot size expression kernel/bpf/syscall.c:1563:15: sparse: sparse: undefined identifier 'bpf_prog_types' kernel/bpf/syscall.c:1797:27: sparse: sparse: undefined identifier 'bpf_dummy_read' kernel/bpf/syscall.c:1798:27: sparse: sparse: undefined identifier 'bpf_dummy_write' kernel/bpf/syscall.c:2293:27: sparse: sparse: undefined identifier 'bpf_dummy_read' kernel/bpf/syscall.c:2294:27: sparse: sparse: undefined identifier 'bpf_dummy_write' kernel/bpf/syscall.c:2870:23: sparse: sparse: undefined identifier '__bpf_map_inc_not_zero' kernel/bpf/syscall.c:3538:15: sparse: sparse: undefined identifier 'map_get_sys_perms' kernel/bpf/syscall.c:3544:15: sparse: sparse: undefined identifier 'map_get_sys_perms' kernel/bpf/syscall.c:3685:23: sparse: sparse: undefined identifier 'map_create' kernel/bpf/syscall.c:3688:23: sparse: sparse: undefined identifier 'map_lookup_elem' kernel/bpf/syscall.c:3691:23: sparse: sparse: undefined identifier 'map_update_elem' kernel/bpf/syscall.c:3694:23: sparse: sparse: undefined identifier 'map_delete_elem' kernel/bpf/syscall.c:3697:23: sparse: sparse: undefined identifier 'map_get_next_key' kernel/bpf/syscall.c:3700:23: sparse: sparse: undefined identifier 'map_freeze' kernel/bpf/syscall.c:3757:23: sparse: sparse: undefined identifier 'map_lookup_and_delete_elem' # https://github.com/0day-ci/linux/commit/45c88e856945c443c39e3f519ad9740b8e487d8d git remote add linux-review https://github.com/0day-ci/linux git remote update linux-review git checkout 45c88e856945c443c39e3f519ad9740b8e487d8d vim +117 kernel/bpf/syscall.c a38845729ea398 Jakub Kicinski 2018-01-11 103 99c55f7d47c0dc Alexei Starovoitov 2014-09-26 104 static struct bpf_map *find_and_alloc_map(union bpf_attr *attr) 99c55f7d47c0dc Alexei Starovoitov 2014-09-26 105 { 1110f3a9bcf394 Jakub Kicinski 2018-01-11 106 const struct bpf_map_ops *ops; 9ef09e35e521bf Mark Rutland 2018-05-03 107 u32 type = attr->map_type; 99c55f7d47c0dc Alexei Starovoitov 2014-09-26 108 struct bpf_map *map; 1110f3a9bcf394 Jakub Kicinski 2018-01-11 109 int err; 99c55f7d47c0dc Alexei Starovoitov 2014-09-26 110 9ef09e35e521bf Mark Rutland 2018-05-03 111 if (type >= ARRAY_SIZE(bpf_map_types)) 1110f3a9bcf394 Jakub Kicinski 2018-01-11 112 return ERR_PTR(-EINVAL); 9ef09e35e521bf Mark Rutland 2018-05-03 113 type = array_index_nospec(type, ARRAY_SIZE(bpf_map_types)); 9ef09e35e521bf Mark Rutland 2018-05-03 114 ops = bpf_map_types[type]; 45c88e856945c4 Mao Wenan 2020-04-22 115 if (!ops) { 45c88e856945c4 Mao Wenan 2020-04-22 @116 pr_warn("map type %d not supported or 45c88e856945c4 Mao Wenan 2020-04-22 @117 kernel config not opened\n", type); 45c88e856945c4 Mao Wenan 2020-04-22 118 return ERR_PTR(-EOPNOTSUPP); 45c88e856945c4 Mao Wenan 2020-04-22 119 } 1110f3a9bcf394 Jakub Kicinski 2018-01-11 120 if (ops->map_alloc_check) { 1110f3a9bcf394 Jakub Kicinski 2018-01-11 121 err = ops->map_alloc_check(attr); 1110f3a9bcf394 Jakub Kicinski 2018-01-11 122 if (err) 1110f3a9bcf394 Jakub Kicinski 2018-01-11 123 return ERR_PTR(err); 1110f3a9bcf394 Jakub Kicinski 2018-01-11 124 } a38845729ea398 Jakub Kicinski 2018-01-11 125 if (attr->map_ifindex) a38845729ea398 Jakub Kicinski 2018-01-11 126 ops = &bpf_map_offload_ops; 1110f3a9bcf394 Jakub Kicinski 2018-01-11 127 map = ops->map_alloc(attr); 99c55f7d47c0dc Alexei Starovoitov 2014-09-26 128 if (IS_ERR(map)) 99c55f7d47c0dc Alexei Starovoitov 2014-09-26 129 return map; 1110f3a9bcf394 Jakub Kicinski 2018-01-11 130 map->ops = ops; 9ef09e35e521bf Mark Rutland 2018-05-03 131 map->map_type = type; 99c55f7d47c0dc Alexei Starovoitov 2014-09-26 132 return map; 99c55f7d47c0dc Alexei Starovoitov 2014-09-26 133 } 99c55f7d47c0dc Alexei Starovoitov 2014-09-26 134 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
