1 files changed, 5 insertions, 2 deletions

diff --git a/fs/namespace.c b/fs/namespace.c
index 2b12b7a9455d..acc5583764dc 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1669,8 +1669,11 @@ struct vfsmount *collect_mounts(struct path *path)
 {
         struct mount *tree;
         namespace_lock();
-        tree = copy_tree(real_mount(path->mnt), path->dentry,
-                         CL_COPY_ALL | CL_PRIVATE);
+        if (!check_mnt(real_mount(path->mnt)))
+                tree = ERR_PTR(-EINVAL);
+        else
+                tree = copy_tree(real_mount(path->mnt), path->dentry,
+                                 CL_COPY_ALL | CL_PRIVATE);
         namespace_unlock();
         if (IS_ERR(tree))
                 return ERR_CAST(tree);