WARNING: line length of 82 exceeds 80 columns
#52: FILE: net/phonet/af_phonet.c:25:
+static const struct phonet_protocol __rcu *proto_tab[PHONET_NPROTO] __read_mostly;

WARNING: Do not crash the kernel unless it is absolutely unavoidable--use WARN_ON_ONCE() plus recovery code (if feasible) instead of BUG() or variants
#61: FILE: net/phonet/af_phonet.c:485:
+	BUG_ON(rcu_access_pointer(proto_tab[protocol]) != pp);

CHECK: Comparison to NULL could be written "!rcu_access_pointer"
#110: FILE: net/phonet/socket.c:700:
+		if (rcu_access_pointer(pnres.sk[i]) == NULL)

WARNING: line length of 88 exceeds 80 columns
#119: FILE: net/phonet/socket.c:709:
+static struct sock __rcu **pn_res_get_next(struct seq_file *seq, struct sock __rcu **sk)

total: 0 errors, 3 warnings, 1 checks, 88 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 74ce9595f654 ("phonet: add __rcu annotations") 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, 3 warnings, 1 checks, 88 lines checked