From ad74f28a13d38355150bca5e55e5ab3dc8472d64 Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Tue, 15 Dec 2020 00:55:57 +0900
Subject: [PATCH] core/namespace: do not ignore non-EPERM mount error

Follow-up for 61f8a7bd3e20222617fc59f398071daf2af86f96.
---
 src/core/namespace.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/core/namespace.c b/src/core/namespace.c
index 93eab45e21..39729ba899 100644
--- a/src/core/namespace.c
+++ b/src/core/namespace.c
@@ -914,7 +914,8 @@ static int mount_procfs(const MountEntry *m, const NamespaceInfo *ns_info) {
                 if (r == 0)
                         /* /proc is not mounted. Propagate the original error code. */
                         return -EPERM;
-        }
+        } else if (r < 0)
+                return r;
 
         return 1;
 }