WARNING: line length of 82 exceeds 80 columns
#110: FILE: net/core/skbuff.c:3666:
+					      skb_frag_off(frag) + offset - start,

WARNING: Deprecated use of 'kmap_atomic', prefer 'kmap_local_page' instead
#112: FILE: net/core/skbuff.c:3668:
+				vaddr = kmap_atomic(p);

WARNING: Deprecated use of 'kunmap_atomic', prefer 'kunmap_local' instead
#114: FILE: net/core/skbuff.c:3670:
+				kunmap_atomic(vaddr);

WARNING: Do not crash the kernel unless it is absolutely unavoidable--use WARN_ON_ONCE() plus recovery code (if feasible) instead of BUG() or variants
#141: FILE: net/core/skbuff.c:3697:
+	BUG_ON(len);

total: 0 errors, 4 warnings, 0 checks, 92 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 3551dfc9af1c ("net: add skb_crc32c()") 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, 4 warnings, 0 checks, 92 lines checked