WARNING: line length of 89 exceeds 80 columns
#98: FILE: tools/testing/selftests/net/mptcp/mptcp_v6_initcall.sh:39:
+		ip netns pids "${ns}" | xargs --no-run-if-empty kill -SIGKILL &>/dev/null

WARNING: line length of 95 exceeds 80 columns
#168: FILE: tools/testing/selftests/net/mptcp/mptcp_v6_initcall.sh:109:
+	established=$(ip netns exec "${ns2}" ss -H -t -6 state established 2>/dev/null | wc -l)

WARNING: line length of 83 exceeds 80 columns
#185: FILE: tools/testing/selftests/net/mptcp/mptcp_v6_initcall.sh:126:
+	mptcp_lib_pr_fail "only ${established}/${NR_CONNS} connections established"

total: 0 errors, 3 warnings, 0 checks, 147 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 a4f9ea9c259b ("selftests: mptcp: add test for IPv6 subflow SLAB placement") 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, 3 warnings, 0 checks, 147 lines checked