1 files changed, 6 insertions, 0 deletions

diff --git a/fs/afs/super.c b/fs/afs/super.c
index 43165009428d..7c31ec399575 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -24,6 +24,8 @@
 #include <linux/parser.h>
 #include <linux/statfs.h>
 #include <linux/sched.h>
+#include <linux/nsproxy.h>
+#include <net/net_namespace.h>
 #include "internal.h"
 
 #define AFS_FS_MAGIC 0x6B414653 /* 'kAFS' */
@@ -363,6 +365,10 @@ static struct dentry *afs_mount(struct file_system_type *fs_type,
 
         memset(&params, 0, sizeof(params));
 
+        ret = -EINVAL;
+        if (current->nsproxy->net_ns != &init_net)
+                goto error;
+
         /* parse the options and device name */
         if (options) {
                 ret = afs_parse_options(&params, options, &dev_name);