1 files changed, 3 insertions, 0 deletions

diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c
index 24f640441bd9..84d693d37428 100644
--- a/fs/overlayfs/copy_up.c
+++ b/fs/overlayfs/copy_up.c
@@ -299,6 +299,9 @@ int ovl_copy_up_one(struct dentry *parent, struct dentry *dentry,
         struct cred *override_cred;
         char *link = NULL;
 
+        if (WARN_ON(!workdir))
+                return -EROFS;
+
         ovl_path_upper(parent, &parentpath);
         upperdir = parentpath.dentry;