WARNING: line length of 95 exceeds 80 columns
#79: FILE: tools/testing/selftests/bpf/prog_tests/dynptr.c:91:
+		rb = ring_buffer__new(bpf_map__fd(skel->maps.ringbuf), ringbuf_cb, skel, NULL);

CHECK: Comparison to NULL could be written "rb"
#97: FILE: tools/testing/selftests/bpf/prog_tests/dynptr.c:164:
+	if (rb != NULL)

CHECK: Alignment should match open parenthesis
#136: FILE: tools/testing/selftests/bpf/progs/dynptr_success.c:596:
+	if (-E2BIG != bpf_probe_read_kernel_dynptr(&ptr, 0, MAX_BUFFER_LEN + 1,
+		test_buf.buf, 0)) {

CHECK: Alignment should match open parenthesis
#142: FILE: tools/testing/selftests/bpf/progs/dynptr_success.c:602:
+	err = bpf_probe_read_kernel_dynptr(&ptr, 0, copy_len,
+		test_buf.buf, 0);

total: 0 errors, 1 warnings, 3 checks, 118 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 1816dd08a212 ("selftests/bpf: probe_read_kernel_dynptr test") 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, 1 warnings, 3 checks, 118 lines checked