WARNING: kfree(NULL) is safe and this check is probably not required
#126: FILE: net/ipv4/tcp_minisocks.c:387:
+		if (twsk->tw_md5_key) {
+			kfree(twsk->tw_md5_key);

total: 0 errors, 1 warnings, 0 checks, 90 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 c0da793d8cee ("tcp: Free TCP-AO/TCP-MD5 info/keys without RCU") 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, 90 lines checked