veristat: small fixed found in -O2 mode

Fix few potentially unitialized variables uses, found while building
veristat.c in release (-O2) mode.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20230331222405.3468634-5-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

diff --git a/tools/testing/selftests/bpf/veristat.c b/tools/testing/selftests/bpf/veristat.c
index e592d05..53d7ec1 100644 (file)
--- a/tools/testing/selftests/bpf/veristat.c
+++ b/tools/testing/selftests/bpf/veristat.c
@@ -810,7 +810,7 @@ static int guess_prog_type_by_ctx_name(const char *ctx_name,
                enum bpf_prog_type prog_type;
                enum bpf_attach_type attach_type;
        } ctx_map[] = {
-               /* __sk_buff is most ambiguous, for now we assume cgroup_skb */
+               /* __sk_buff is most ambiguous, we assume TC program */
                { "__sk_buff", "sk_buff", BPF_PROG_TYPE_SCHED_CLS },
                { "bpf_sock", "sock", BPF_PROG_TYPE_CGROUP_SOCK, BPF_CGROUP_INET4_POST_BIND },
                { "bpf_sock_addr", "bpf_sock_addr_kern",  BPF_PROG_TYPE_CGROUP_SOCK_ADDR, BPF_CGROUP_INET4_BIND },
@@ -1045,6 +1045,7 @@ static int process_obj(const char *filename)
                        goto cleanup;
                }
 
+               lprog = NULL;
                bpf_object__for_each_program(tprog, tobj) {
                        const char *tprog_name = bpf_program__name(tprog);
 
@@ -1855,6 +1856,7 @@ static int handle_comparison_mode(void)
 one_more_time:
        output_comp_headers(cur_fmt);
 
+       last_idx = -1;
        for (i = 0; i < env.join_stat_cnt; i++) {
                const struct verif_stats_join *join = &env.join_stats[i];