[00:35:20][root@rc6]# './test_progs -t kfree_skb'
#79      kfree_skb:OK
Summary: 1/0 PASSED, 0 SKIPPED, 0 FAILED
:: [  PASS  ] :: Command './test_progs -t kfree_skb' (Expected 0, got 0, score )

[00:35:20][root@rc6]# './test_progs-no_alu32 -t kfree_skb'
:: [  FAIL  ] :: Command './test_progs-no_alu32 -t kfree_skb' (Expected 0, got 255, score 78)

=== Dmesg result ===
:: [  FAIL  ] :: Test '79..254 selftests: bpf_test_progs:kfree_skb [FAIL]'