WARNING: line length of 84 exceeds 80 columns
#42: FILE: tools/testing/selftests/bpf/prog_tests/map_kptr_race.c:13:
+	if (!ASSERT_OK(bpf_map_get_info_by_fd(map_fd, &info, &len), "get_map_info"))

WARNING: line length of 84 exceeds 80 columns
#52: FILE: tools/testing/selftests/bpf/prog_tests/map_kptr_race.c:23:
+	ret = bpf_prog_test_run_opts(bpf_program__fd(skel->progs.count_ref), &opts);

CHECK: Alignment should match open parenthesis
#63: FILE: tools/testing/selftests/bpf/prog_tests/map_kptr_race.c:34:
+	LIBBPF_OPTS(bpf_test_run_opts, opts,
+		.data_in = &pkt_v4,

WARNING: line length of 89 exceeds 80 columns
#74: FILE: tools/testing/selftests/bpf/prog_tests/map_kptr_race.c:45:
+	ret = bpf_prog_test_run_opts(bpf_program__fd(skel->progs.test_htab_leak), &opts);

WARNING: Prefer using '"%s...", __func__' to using 'test_htab_leak', this function's name, in a string
#75: FILE: tools/testing/selftests/bpf/prog_tests/map_kptr_race.c:46:
+	if (!ASSERT_OK(ret, "test_htab_leak run"))

WARNING: Prefer using '"%s...", __func__' to using 'test_htab_leak', this function's name, in a string
#77: FILE: tools/testing/selftests/bpf/prog_tests/map_kptr_race.c:48:
+	if (!ASSERT_OK(opts.retval, "test_htab_leak retval"))

WARNING: line length of 89 exceeds 80 columns
#92: FILE: tools/testing/selftests/bpf/prog_tests/map_kptr_race.c:63:
+	watcher->links.htab_map_free = bpf_program__attach(watcher->progs.htab_map_free);

WARNING: line length of 85 exceeds 80 columns
#153: FILE: tools/testing/selftests/bpf/prog_tests/map_kptr_race.c:124:
+	watcher->links.sk_map_free = bpf_program__attach(watcher->progs.sk_map_free);

CHECK: spaces preferred around that '*' (ctx:WxV)
#199: FILE: tools/testing/selftests/bpf/progs/map_kptr_race.c:9:
+	struct prog_test_ref_kfunc __kptr *ref_ptr;
 	                                  ^

CHECK: Alignment should match open parenthesis
#269: FILE: tools/testing/selftests/bpf/progs/map_kptr_race.c:79:
+	v = bpf_sk_storage_get(&sk_ls_race_map, sk, NULL,
+				BPF_SK_STORAGE_GET_F_CREATE);

total: 0 errors, 7 warnings, 3 checks, 300 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 972f0b9d8112 ("selftests/bpf: Add tests for special fields races") 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, 7 warnings, 3 checks, 300 lines checked