WARNING: kfree(NULL) is safe and this check is probably not required
#151: FILE: net/xdp/xsk.c:1587:
+		if (batch->skb_cache)
+			kfree(batch->skb_cache);

total: 0 errors, 1 warnings, 0 checks, 119 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 ac98676d37e0 ("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 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, 1 warnings, 0 checks, 119 lines checked