check the return value of ecp_create

lldpad.spec

@@ -4,7 +4,7 @@
 
 Name:               lldpad
 Version:            1.0.1
-Release:            14
+Release:            15
 Summary:            Intel LLDP Agent
 License:            GPLv2
 URL:                https://www.open-lldp.org
@@ -37,6 +37,7 @@ Patch25:	    open-lldp-v1.0.1-25-l2_linux_packet-correctly-process-return-value-
 Patch26:	    open-lldp-v1.0.1-26-lldpad-system-capability-incorrect-advertised-as-sta.patch
 Patch27:	    open-lldp-v1.0.1-27-fix-build-warnings.patch
 Patch28:	    CVE-2018-10932.patch
+Patch29:            open-lldp-ecp-allow-for-failure-to-create.patch
 
 BuildRequires:      automake autoconf libtool flex kernel-headers libconfig-devel
 BuildRequires:      libnl3-devel readline-devel systemd git
@@ -111,6 +112,12 @@ make check
 %{_mandir}/man*/*
 
 %changelog
+* Tue Jan 26 2021 zengwefeng<zwfeng@huawei.com> - 1.0.1-15
+- Type:bugfix
+- Id:NA
+- SUG:NA
+- DESC:check the return value of ecp_create
+
 * Wed Sep 30 2020 wangxiaopeng <wangxiaopeng7@huawei.com> - 1.0.1-14
 - Type:CVE
 - Id:CVE-2018-10932

open-lldp-ecp-allow-for-failure-to-create.patch

@@ -0,0 +1,29 @@
+From 488051ae0b88b8b77081fadff8154dbd4ddfd54c Mon Sep 17 00:00:00 2001
+From: rpm-build <rpm-build>
+Date: Tue, 26 Jan 2021 16:16:17 +0800
+Subject: [PATCH] ecp-allow-for-failure-to-create.patch
+
+---
+ qbg/ecp22.c | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/qbg/ecp22.c b/qbg/ecp22.c
+index 4640701..ba8f891 100644
+--- a/qbg/ecp22.c
++++ b/qbg/ecp22.c
+@@ -782,7 +782,11 @@ void ecp22_start(char *ifname)
+ 	ecp = find_ecpdata(ifname, eud);
+ 	if (!ecp)
+ 		ecp = ecp22_create(ifname, eud);
+-	ecp->max_retries = ECP22_MAX_RETRIES_DEFAULT;
++	if (!ecp) {
++           LLDPAD_DBG("%s:%s failed creating ECP22 instance\n", __func__, ifname);
++           return;
++        }
++       ecp->max_retries = ECP22_MAX_RETRIES_DEFAULT;
+ 	ecp->max_rte = ECP22_ACK_TIMER_DEFAULT;
+ 	LIST_INIT(&ecp->inuse.head);
+ 	ecp->inuse.last = 0;
+-- 
+2.23.0
+