From cc9872d55312a40344f5d6d7af15a54b0358e992 Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bvanassche@acm.org>
Date: Sat, 12 Jan 2019 05:01:03 +0000
Subject: [PATCH] scst_dlm: Refuse to proceed if parsing the DLM node IDs
 failed

git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@7869 d57e44dd-8a1f-0410-8b47-8ef2f437770f
---
 scst/src/scst_dlm.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/scst/src/scst_dlm.c b/scst/src/scst_dlm.c
index a2cf0bdf0..ad65c46f9 100644
--- a/scst/src/scst_dlm.c
+++ b/scst/src/scst_dlm.c
@@ -640,7 +640,10 @@ static int scst_dlm_update_nodeids(struct scst_pr_dlm_data *pr_dlm)
 			pr_dlm->local_nodeid = nodeid;
 		pr_dlm->nodeid[i] = nodeid;
 	}
-	ret = 0;
+	if (WARN_ON_ONCE(pr_dlm->local_nodeid == 0))
+		ret = -EINVAL;
+	else
+		ret = 0;
 
 out:
 	kfree(entries);