WARNING: 'fuction' may be misspelled - perhaps 'function'?
#6: 
The __list_del fuction doesn't set the previous node's next pointer to
               ^^^^^^^

WARNING: 'therfore' may be misspelled - perhaps 'therefore'?
#11: 
after list_del and therfore reading head->first from the userspace will
                   ^^^^^^^^

total: 0 errors, 2 warnings, 0 checks, 16 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 9ee959f108dd ("selftests/bpf: fix list_del() in arena list") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE FILE_PATH_CHANGES 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, 16 lines checked