WARNING: Missing a blank line after declarations
#50: FILE: tools/testing/selftests/bpf/prog_tests/dynptr.c:130:
+		int err, prog_fd;
+		LIBBPF_OPTS(bpf_test_run_opts, opts,

WARNING: line length of 85 exceeds 80 columns
#209: FILE: tools/testing/selftests/bpf/progs/dynptr_success.c:662:
+	/* Both source and destination dynptrs are backed by non-contiguous memory */

WARNING: line length of 81 exceeds 80 columns
#223: FILE: tools/testing/selftests/bpf/progs/dynptr_success.c:676:
+	if (bpf_dynptr_copy(&ptr_xdp, 2000, &ptr_xdp, 0, len * chunks) != -E2BIG)

total: 0 errors, 3 warnings, 0 checks, 194 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 cbaaf723dbd3 ("selftests/bpf: add tests for bpf_dynptr_copy") 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, 194 lines checked