test/bpf: skip dump if conversion fails

[ upstream commit 78e7b29 ]

If conversion of cBPF to eBPF fails (in rte_bpf_convert)
then the test should not try and print the result.

Coverity issue: 373661
Fixes: 2eccf6a ("bpf: add function to convert classic BPF to DPDK BPF")

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>

app/test/test_bpf.c

@@ -3259,8 +3259,10 @@ test_bpf_dump(struct bpf_program *cbf, const struct rte_bpf_prm *prm)
 	printf("cBPF program (%u insns)\n", cbf->bf_len);
 	bpf_dump(cbf, 1);
 
-	printf("\neBPF program (%u insns)\n", prm->nb_ins);
-	rte_bpf_dump(stdout, prm->ins, prm->nb_ins);
+	if (prm != NULL) {
+		printf("\neBPF program (%u insns)\n", prm->nb_ins);
+		rte_bpf_dump(stdout, prm->ins, prm->nb_ins);
+	}
 }
 
 static int