WARNING: line length of 87 exceeds 80 columns
#54: FILE: tools/testing/selftests/bpf/prog_tests/btf_kind.c:31:
+	ASSERT_EQ(hdr->str_off, hdr->layout_off + hdr->layout_len, "str_after_layout");

WARNING: line length of 83 exceeds 80 columns
#70: FILE: tools/testing/selftests/bpf/prog_tests/btf_kind.c:47:
+	ASSERT_EQ(hdr->str_off, hdr->type_off + hdr->type_len, "strs_after_types");

WARNING: Missing a blank line after declarations
#101: FILE: tools/testing/selftests/bpf/prog_tests/btf_kind.c:78:
+	__s32 int_id, unrec_id, id, id2;
+	LIBBPF_OPTS(btf_new_opts, opts);

WARNING: line length of 82 exceeds 80 columns
#163: FILE: tools/testing/selftests/bpf/prog_tests/btf_kind.c:140:
+	t = (void *)hdr + hdr->hdr_len + hdr->type_off + sizeof(struct btf_type) +

WARNING: line length of 85 exceeds 80 columns
#203: FILE: tools/testing/selftests/bpf/prog_tests/btf_kind.c:180:
+		/* id of "test_lookup2" will be id2 -1 as we have removed one type */

CHECK: Blank lines aren't necessary before a close brace '}'
#208: FILE: tools/testing/selftests/bpf/prog_tests/btf_kind.c:185:
+
+	}

WARNING: line length of 85 exceeds 80 columns
#228: FILE: tools/testing/selftests/bpf/prog_tests/btf_kind.c:205:
+		/* id of "test_lookup2" will be id2 -1 as we have removed one type */

CHECK: Blank lines aren't necessary before a close brace '}'
#233: FILE: tools/testing/selftests/bpf/prog_tests/btf_kind.c:210:
+
+	}

total: 0 errors, 6 warnings, 2 checks, 226 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 38a9828ce3bf ("selftests/bpf: Test kind encoding/decoding") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE FILE_PATH_CHANGES 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.
total: 0 errors, 6 warnings, 2 checks, 226 lines checked