WARNING: line length of 96 exceeds 80 columns
#61: FILE: kernel/bpf/verifier.c:10738:
+		    (env->cur_state->active_rcu_locks || env->cur_state->active_preempt_locks ||

WARNING: line length of 100 exceeds 80 columns
#112: FILE: kernel/bpf/verifier.c:14017:
+			verbose(env, "unmatched rcu read unlock (kernel function %s)\n", func_name);

WARNING: line length of 101 exceeds 80 columns
#134: FILE: kernel/bpf/verifier.c:14029:
+		verbose(env, "kernel func %s is sleepable within rcu_read_lock region\n", func_name);

WARNING: line length of 100 exceeds 80 columns
#139: FILE: kernel/bpf/verifier.c:14034:
+		verbose(env, "Calling bpf_rcu_read_{lock,unlock} in unnecessary rbtree callback\n");

total: 0 errors, 4 warnings, 0 checks, 129 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 b28f499ce436 ("bpf: support nested rcu critical sections") 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, 4 warnings, 0 checks, 129 lines checked