WARNING: line length of 84 exceeds 80 columns
#25: FILE: tools/testing/selftests/bpf/progs/bpf_arena_spin_lock.h:305:
+		(void)smp_cond_load_acquire_label(&lock->locked, !VAL, release_err);

WARNING: line length of 90 exceeds 80 columns
#34: FILE: tools/testing/selftests/bpf/progs/bpf_arena_spin_lock.h:383:
+		(void)arch_mcs_spin_lock_contended_label(&node->locked, release_node_err);

WARNING: Prefer 'unsigned int' to bare use of 'unsigned'
#56: FILE: tools/testing/selftests/bpf/progs/linked_list_fail.c:229:
+	(void)bpf_obj_new(union { int data; unsigned udata; });

total: 0 errors, 3 warnings, 0 checks, 41 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 b09fa3f8aea4 ("selftests/bpf: Fix "expression result unused" warnings") 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, 0 checks, 41 lines checked