CHECK: Alignment should match open parenthesis
#41: FILE: kernel/bpf/btf.c:8502:
+static int btf_check_kfunc_protos(struct btf *btf, u32 func_id, u32 func_flags,
+			const struct module *module)

WARNING: line length of 97 exceeds 80 columns
#52: FILE: kernel/bpf/btf.c:8513:
+						btf_name_by_offset(btf_vmlinux, func->name_off));

CHECK: Alignment should match open parenthesis
#52: FILE: kernel/bpf/btf.c:8513:
+			pr_err("kfunc %s is already present in vmlinux\n",
+						btf_name_by_offset(btf_vmlinux, func->name_off));

WARNING: line length of 85 exceeds 80 columns
#65: FILE: kernel/bpf/btf.c:8771:
+					     kset->set->pairs[i].flags, kset->owner);

total: 0 errors, 2 warnings, 2 checks, 32 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 13f3fd056200 ("kernel/bpf/btf.c: reject to register duplicated kfunc") 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, 2 warnings, 2 checks, 32 lines checked