WARNING: Missing a blank line after declarations
#41: FILE: tools/testing/selftests/bpf/progs/verifier_map_in_map.c:147:
+	struct bpf_map *map = NULL;
+	int __attribute__((aligned(8))) key = 0;

WARNING: Prefer __aligned(8) over __attribute__((aligned(8)))
#41: FILE: tools/testing/selftests/bpf/progs/verifier_map_in_map.c:147:
+	int __attribute__((aligned(8))) key = 0;

WARNING: Missing a blank line after declarations
#109: FILE: tools/testing/selftests/bpf/progs/verifier_map_in_map.c:215:
+	struct rb_ctx event_ctx = __rb_event_reserve(256);
+	__rb_event_submit(&event_ctx);

total: 0 errors, 3 warnings, 0 checks, 81 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 45f5e3b39bc4 ("selftests/bpf: add test cases with CONST_PTR_TO_MAP null checks") 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, 3 warnings, 0 checks, 81 lines checked