CHECK: Alignment should match open parenthesis
#33: FILE: tools/testing/selftests/bpf/prog_tests/netpoll.c:20:
+static void run_netpoll_test(const char *ns_name, const char *local_ip,
+			      const char *remote_ip, bool ipv6)

WARNING: line length of 92 exceeds 80 columns
#55: FILE: tools/testing/selftests/bpf/prog_tests/netpoll.c:36:
+		SYS(fail, "ip -net %s addr add %s/64 dev %s", ns_name, local_ip, DUMMY_DEV);

WARNING: line length of 92 exceeds 80 columns
#57: FILE: tools/testing/selftests/bpf/prog_tests/netpoll.c:38:
+		SYS(fail, "ip -net %s addr add %s/24 dev %s", ns_name, local_ip, DUMMY_DEV);

WARNING: line length of 84 exceeds 80 columns
#118: FILE: tools/testing/selftests/bpf/progs/netpoll_sanity.c:41:
+		__builtin_memcpy(&opts.remote_ip6, &remote_ip6, sizeof(remote_ip6));

WARNING: line length of 93 exceeds 80 columns
#149: FILE: tools/testing/selftests/bpf/progs/netpoll_sanity.c:110:
+		if (bpf_probe_read_kernel(&ip, sizeof(ip), data + sizeof(struct ethhdr)) < 0)

WARNING: line length of 95 exceeds 80 columns
#155: FILE: tools/testing/selftests/bpf/progs/netpoll_sanity.c:116:
+		if (bpf_probe_read_kernel(&ip6, sizeof(ip6), data + sizeof(struct ethhdr)) < 0)

WARNING: line length of 112 exceeds 80 columns
#170: FILE: tools/testing/selftests/bpf/progs/netpoll_sanity.c:129:
+	if (bpf_probe_read_kernel(&driver_xmit, sizeof(driver_xmit), data + offset + sizeof(struct udphdr)) < 0)

total: 0 errors, 6 warnings, 1 checks, 143 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 21b24e7d46a2 ("selftests/bpf: Add netpoll kfunc IPv6 variant test") 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, 6 warnings, 1 checks, 143 lines checked