WARNING: line length of 85 exceeds 80 columns
#248: FILE: tools/testing/selftests/net/ncdevmem.c:465:
+				print_nonzero_bytes(tmp_mem, dmabuf_cmsg->frag_size);

total: 0 errors, 1 warnings, 0 checks, 307 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 21d3114d4694 ("selftests: ncdevmem: Separate out dmabuf provider") 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, 0 checks, 307 lines checked