From: Donald Sharp <sharpd@cumulusnetworks.com>
Date: Sat, 15 Aug 2020 17:41:18 +0000 (-0400)
Subject: zebra: zevpn cannot be null passed into zebra_evpn_es_evi_show_one_evpn
X-Git-Tag: base_7.6~434^2~2
X-Git-Url: https://git.puffer.fish/?a=commitdiff_plain;h=ba49e033f5d6fc97a9aa1e407ac542d226f12ff4;p=mirror%2Ffrr.git

zebra: zevpn cannot be null passed into zebra_evpn_es_evi_show_one_evpn

In zebra_evpn_es_evi_show_vni the zevpn pointer if passed into
zebra_evpn_es_evi_show_one_evi will crash if it is null and
we have code that checks that it is non null and then immediately
calls the function.  Add a return to prevent a crash.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
---

diff --git a/zebra/zebra_evpn_mh.c b/zebra/zebra_evpn_mh.c
index f71065cdcf..a406884187 100644
--- a/zebra/zebra_evpn_mh.c
+++ b/zebra/zebra_evpn_mh.c
@@ -358,6 +358,8 @@ void zebra_evpn_es_evi_show_vni(struct vty *vty, bool uj, vni_t vni, int detail)
 	} else {
 		if (!uj)
 			vty_out(vty, "VNI %d doesn't exist\n", vni);
+
+		return;
 	}
 	zebra_evpn_es_evi_show_one_evpn(zevpn, vty, json, detail);
 }