From 9b618876a7db3cdd2601f8bda982b97667a7bd19 Mon Sep 17 00:00:00 2001
From: Thomas Schoebel-Theuer <mars@box>
Date: Fri, 31 Jul 2020 18:56:05 +0200
Subject: [PATCH] marsadm: safeguard peer matching

---
 userspace/marsadm | 1 +
 1 file changed, 1 insertion(+)

diff --git a/userspace/marsadm b/userspace/marsadm
index e01d6019..6c35c9bd 100755
--- a/userspace/marsadm
+++ b/userspace/marsadm
@@ -1632,6 +1632,7 @@ sub get_alive_links {
   foreach my $path (lamport_glob("$mars/ips/ip*-$hosts")) {
     $path =~ m:/ip-(.*):;
     my $peer = $1;
+    next unless $peer;
     $cand{$peer} = 1;
     # After join-cluster & co, links may take a while to appear
     $peers{$peer} = 1 if $non_participating;