commit 95daa11b82dfa6aa3e68ffc92e1282abc1b2b62a
Author: Dave Anderson <anderson@redhat.com>
Date:   Fri Jun 1 15:28:55 2018 -0400

    Fix for the "bpf -t" option.  Although highly unlikely, without the
    patch, the target function name of a BPF bytecode call instruction
    may fail to be resolved correctly.
    (anderson@redhat.com)

diff --git a/bpf.c b/bpf.c
index ee1986f..427263d 100644
--- a/bpf.c
+++ b/bpf.c
@@ -1060,8 +1060,7 @@ static char *__func_get_name(const struct bpf_insn *insn,
 		return buff;
 
 	if (insn->src_reg != BPF_PSEUDO_CALL &&
-	    insn->imm >= 0 && insn->imm < __BPF_FUNC_MAX_ID &&
-	    func_id_str[insn->imm]) {
+	    insn->imm >= 0 && insn->imm < __BPF_FUNC_MAX_ID) {
 //              return func_id_str[insn->imm];
 		if (!readmem(symbol_value("func_id_str") + (insn->imm * sizeof(void *)), 
 		    KVADDR, &func_id_ptr, sizeof(void *), "func_id_str pointer",