WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#20: 
new file mode 100644

ERROR: Macros with complex values should be enclosed in parentheses
#68: FILE: tools/testing/selftests/bpf/progs/string_kfuncs.c:28:
+#define __test(retval) SEC("syscall") __success __retval(retval)

WARNING: line length of 83 exceeds 80 columns
#72: FILE: tools/testing/selftests/bpf/progs/string_kfuncs.c:32:
+__test(1) int test_strchr_found(void *ctx) { return bpf_strchr(str1, 'e') - str1; }

WARNING: line length of 84 exceeds 80 columns
#73: FILE: tools/testing/selftests/bpf/progs/string_kfuncs.c:33:
+__test(11) int test_strchr_null(void *ctx) { return bpf_strchr(str1, '\0') - str1; }

WARNING: line length of 84 exceeds 80 columns
#74: FILE: tools/testing/selftests/bpf/progs/string_kfuncs.c:34:
+__test(0) u64 test_strchr_notfound(void *ctx) { return (u64)bpf_strchr(str1, 'x'); }

WARNING: line length of 89 exceeds 80 columns
#75: FILE: tools/testing/selftests/bpf/progs/string_kfuncs.c:35:
+__test(1) int test_strchrnul_found(void *ctx) { return bpf_strchrnul(str1, 'e') - str1; }

WARNING: line length of 93 exceeds 80 columns
#76: FILE: tools/testing/selftests/bpf/progs/string_kfuncs.c:36:
+__test(11) int test_strchrnul_notfound(void *ctx) { return bpf_strchrnul(str1, 'x') - str1; }

WARNING: line length of 88 exceeds 80 columns
#77: FILE: tools/testing/selftests/bpf/progs/string_kfuncs.c:37:
+__test(1) int test_strnchr_found(void *ctx) { return bpf_strnchr(str1, 5, 'e') - str1; }

WARNING: line length of 90 exceeds 80 columns
#78: FILE: tools/testing/selftests/bpf/progs/string_kfuncs.c:38:
+__test(11) int test_strnchr_null(void *ctx) { return bpf_strnchr(str1, 12, '\0') - str1; }

WARNING: line length of 89 exceeds 80 columns
#79: FILE: tools/testing/selftests/bpf/progs/string_kfuncs.c:39:
+__test(0) u64 test_strnchr_notfound(void *ctx) { return (u64)bpf_strnchr(str1, 5, 'w'); }

WARNING: line length of 94 exceeds 80 columns
#80: FILE: tools/testing/selftests/bpf/progs/string_kfuncs.c:40:
+__test(1) int test_strnchrnul_found(void *ctx) { return bpf_strnchrnul(str1, 5, 'e') - str1; }

WARNING: line length of 99 exceeds 80 columns
#81: FILE: tools/testing/selftests/bpf/progs/string_kfuncs.c:41:
+__test(11) int test_strnchrnul_notfound(void *ctx) { return bpf_strnchrnul(str1, 12, 'x') - str1; }

WARNING: line length of 85 exceeds 80 columns
#82: FILE: tools/testing/selftests/bpf/progs/string_kfuncs.c:42:
+__test(9) int test_strrchr_found(void *ctx) { return bpf_strrchr(str1, 'l') - str1; }

WARNING: line length of 86 exceeds 80 columns
#83: FILE: tools/testing/selftests/bpf/progs/string_kfuncs.c:43:
+__test(0) u64 test_strrchr_notfound(void *ctx) { return (u64)bpf_strrchr(str1, 'x'); }

WARNING: line length of 86 exceeds 80 columns
#88: FILE: tools/testing/selftests/bpf/progs/string_kfuncs.c:48:
+__test(2) int test_strpbrk_found(void *ctx) { return bpf_strpbrk(str1, str3) - str1; }

WARNING: line length of 87 exceeds 80 columns
#89: FILE: tools/testing/selftests/bpf/progs/string_kfuncs.c:49:
+__test(0) u64 test_strpbrk_notfound(void *ctx) { return (u64)bpf_strpbrk(str1, str4); }

WARNING: line length of 84 exceeds 80 columns
#90: FILE: tools/testing/selftests/bpf/progs/string_kfuncs.c:50:
+__test(6) int test_strstr_found(void *ctx) { return bpf_strstr(str1, str3) - str1; }

WARNING: line length of 85 exceeds 80 columns
#91: FILE: tools/testing/selftests/bpf/progs/string_kfuncs.c:51:
+__test(0) u64 test_strstr_notfound(void *ctx) { return (u64)bpf_strstr(str1, str4); }

WARNING: line length of 84 exceeds 80 columns
#92: FILE: tools/testing/selftests/bpf/progs/string_kfuncs.c:52:
+__test(0) int test_strstr_empty(void *ctx) { return bpf_strstr(str1, str5) - str1; }

WARNING: line length of 93 exceeds 80 columns
#93: FILE: tools/testing/selftests/bpf/progs/string_kfuncs.c:53:
+__test(6) int test_strnstr_found(void *ctx) { return bpf_strnstr(str1, 12, str3, 6) - str1; }

WARNING: line length of 91 exceeds 80 columns
#94: FILE: tools/testing/selftests/bpf/progs/string_kfuncs.c:54:
+__test(0) u64 test_strnstr_unsafe(void *ctx) { return (u64)bpf_strnstr(str1, 5, str3, 5); }

WARNING: line length of 94 exceeds 80 columns
#95: FILE: tools/testing/selftests/bpf/progs/string_kfuncs.c:55:
+__test(0) u64 test_strnstr_notfound(void *ctx) { return (u64)bpf_strnstr(str1, 12, str4, 4); }

WARNING: line length of 92 exceeds 80 columns
#96: FILE: tools/testing/selftests/bpf/progs/string_kfuncs.c:56:
+__test(0) int test_strnstr_empty(void *ctx) { return bpf_strnstr(str1, 5, str5, 1) - str1; }

total: 1 errors, 22 warnings, 0 checks, 68 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit 293eea837217 ("selftests/bpf: Add tests for string kfuncs") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.