CHECK: Please don't use multiple blank lines
#81: FILE: kernel/bpf/btf.c:6502:
 
+

WARNING: line length of 83 exceeds 80 columns
#116: FILE: kernel/bpf/verifier.c:6537:
+		if (WARN_ON_ONCE(env->prog->expected_attach_type != BPF_LSM_MAC)) {

WARNING: line length of 85 exceeds 80 columns
#123: FILE: kernel/bpf/verifier.c:6544:
+			verbose(env, "invalid %s offset: %d (expected 0, type=%s)\n",

WARNING: line length of 86 exceeds 80 columns
#130: FILE: kernel/bpf/verifier.c:6551:
+			verbose(env, "unable to resolve the size of type '%s': %ld\n",

WARNING: line length of 84 exceeds 80 columns
#135: FILE: kernel/bpf/verifier.c:6556:
+			verbose(env, "invalid %s size: %d (expected %u, type=%s)\n",

WARNING: line length of 100 exceeds 80 columns
#140: FILE: kernel/bpf/verifier.c:6561:
+	} else if (env->ops->btf_struct_access && !type_is_alloc(reg->type) && atype == BPF_WRITE) {

total: 0 errors, 5 warnings, 1 checks, 98 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 c3a1d378d7b2 ("bpf, lsm: Enable BPF LSM prog to read/write return value parameters") 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, 5 warnings, 1 checks, 98 lines checked