[PATCH v3 bpf-next 4/4] veristat: small fixed found in -O2 mode

From: Andrii Nakryiko <andrii@kernel.org>
To: <bpf@vger.kernel.org>, <ast@kernel.org>, <daniel@iogearbox.net>,
	<martin.lau@kernel.org>
Cc: <andrii@kernel.org>, <kernel-team@meta.com>
Subject: [PATCH v3 bpf-next 4/4] veristat: small fixed found in -O2 mode
Date: Fri, 31 Mar 2023 15:24:05 -0700	[thread overview]
Message-ID: <20230331222405.3468634-5-andrii@kernel.org> (raw)
In-Reply-To: <20230331222405.3468634-1-andrii@kernel.org>

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

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
---
 tools/testing/selftests/bpf/veristat.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/veristat.c b/tools/testing/selftests/bpf/veristat.c
index e592d05bccb2..53d7ec168268 100644
--- 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];
 
-- 
2.34.1

