WARNING: Unknown link reference 'Ref:', use 'Link:' or 'Closes:' instead
#29: 
Ref: https://syzkaller.appspot.com/bug?extid=332fe1e67018625f63c9

WARNING: The commit message has 'syzkaller', perhaps it also needs a 'Fixes:' tag?

total: 0 errors, 2 warnings, 0 checks, 34 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 768b02aca496 ("l2tp: fix warning in l2tp_exit_net found by syzbot") 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, 2 warnings, 0 checks, 34 lines checked