WARNING: 'an user' may be misspelled - perhaps 'a user'?
#12: 
It is possible for an user to provide a malicious 'GSO' packet,
                   ^^^^^^^

total: 0 errors, 1 warnings, 0 checks, 17 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 6d7832bea877 ("net: add more sanity checks to qdisc_pkt_len_init()") 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, 17 lines checked