WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#41: 
new file mode 100644

WARNING: line length of 85 exceeds 80 columns
#83: FILE: tools/testing/selftests/net/netfilter/conntrack_reverse_clash.c:38:
+	fprintf(stderr, "Port number changed, wanted %d got %d\n", want, ntohs(got));

WARNING: line length of 97 exceeds 80 columns
#141: FILE: tools/testing/selftests/net/netfilter/conntrack_reverse_clash.c:96:
+			if (sendto(s1, buf, LEN, 0, (struct sockaddr *)&sa2, sizeof(sa2)) != LEN)

WARNING: line length of 91 exceeds 80 columns
#144: FILE: tools/testing/selftests/net/netfilter/conntrack_reverse_clash.c:99:
+			if (recvfrom(s2, buf, LEN, 0, (struct sockaddr *)&peer, &plen) < 0)

WARNING: line length of 97 exceeds 80 columns
#150: FILE: tools/testing/selftests/net/netfilter/conntrack_reverse_clash.c:105:
+			if (sendto(s2, buf, LEN, 0, (struct sockaddr *)&sa1, sizeof(sa1)) != LEN)

WARNING: line length of 91 exceeds 80 columns
#153: FILE: tools/testing/selftests/net/netfilter/conntrack_reverse_clash.c:108:
+			if (recvfrom(s1, buf, LEN, 0, (struct sockaddr *)&peer, &plen) < 0)

total: 0 errors, 6 warnings, 0 checks, 190 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 ec7a9412294d ("selftests: netfilter: add reverse-clash resolution test case") 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, 6 warnings, 0 checks, 190 lines checked