WARNING: line length of 84 exceeds 80 columns
#104: FILE: tools/lib/bpf/linker.c:243:
+	linker->fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC, 0644);

WARNING: line length of 83 exceeds 80 columns
#238: FILE: tools/lib/bpf/linker.c:518:
+		pr_warn("failed to open file '%s': %s\n", filename, errstr(errno));

WARNING: line length of 82 exceeds 80 columns
#275: FILE: tools/lib/bpf/linker.c:554:
+		pr_warn("failed to create memfd '%s': %s\n", name, errstr(errno));

WARNING: line length of 83 exceeds 80 columns
#283: FILE: tools/lib/bpf/linker.c:562:
+			pr_warn("failed to write '%s': %s\n", name, errstr(errno));

WARNING: line length of 81 exceeds 80 columns
#353: FILE: tools/lib/bpf/linker.c:692:
+		pr_warn("byte order mismatch with ELF file %s\n", obj->filename);

WARNING: line length of 90 exceeds 80 columns
#369: FILE: tools/lib/bpf/linker.c:706:
+		pr_warn_elf("failed to get SHSTRTAB section index for %s", obj->filename);

total: 0 errors, 6 warnings, 0 checks, 406 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 c9c695966efd ("libbpf: Extend linker API to support in-memory ELF files") 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.
total: 0 errors, 6 warnings, 0 checks, 406 lines checked