WARNING: kfree(NULL) is safe and this check is probably not required #114: FILE: net/xdp/xsk.c:1483: + if (xs->skb_batch) + kfree(xs->skb_batch); total: 0 errors, 1 warnings, 0 checks, 87 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 2af861786f0b ("xsk: introduce XDP_GENERIC_XMIT_BATCH setsockopt") 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, 87 lines checked