WARNING: line length of 81 exceeds 80 columns
#77: FILE: tools/testing/selftests/bpf/progs/refcounted_kptr.c:417:
+__description("list_is_edge_test1: is_first on first node, is_last on last node")

WARNING: line length of 81 exceeds 80 columns
#136: FILE: tools/testing/selftests/bpf/progs/refcounted_kptr.c:476:
+	if (!bpf_list_is_first(&head, front) || bpf_list_is_last(&head, front)) {

WARNING: line length of 81 exceeds 80 columns
#260: FILE: tools/testing/selftests/bpf/progs/refcounted_kptr.c:600:
+__description("list_del_test3: list_del accepts list_front return value as node")

WARNING: line length of 81 exceeds 80 columns
#329: FILE: tools/testing/selftests/bpf/progs/refcounted_kptr.c:669:
+__description("list_add_test2: list_add accepts list_front return value as prev")

WARNING: line length of 81 exceeds 80 columns
#381: FILE: tools/testing/selftests/bpf/progs/refcounted_kptr.c:721:
+__description("list_push_back_uninit_head: push_back on 0-initialized list head")

total: 0 errors, 5 warnings, 0 checks, 427 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 aaa22f5cd635 ("selftests/bpf: Add test cases for bpf_list_del/add/is_first/is_last/empty") 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, 5 warnings, 0 checks, 427 lines checked