1 files changed, 5 insertions, 3 deletions

diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c
index 4cb21b558a85..1b56686ab178 100644
--- a/fs/sysfs/mount.c
+++ b/fs/sysfs/mount.c
@@ -71,9 +71,11 @@ static int sysfs_init_fs_context(struct fs_context *fc)
         kfc->magic = SYSFS_MAGIC;
         fc->fs_private = kfc;
         fc->ops = &sysfs_fs_context_ops;
-        if (fc->user_ns)
-                put_user_ns(fc->user_ns);
-        fc->user_ns = get_user_ns(netns->user_ns);
+        if (netns) {
+                if (fc->user_ns)
+                        put_user_ns(fc->user_ns);
+                fc->user_ns = get_user_ns(netns->user_ns);
+        }
         fc->global = true;
         return 0;
 }