1 files changed, 1 insertions, 0 deletions

diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index 8a9116e15b70..aed8fda33024 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -488,6 +488,7 @@ struct dentry *ceph_finish_lookup(struct ceph_mds_request *req,
                 struct inode *inode = ceph_get_snapdir(parent);
                 dout("ENOENT on snapdir %p '%.*s', linking to snapdir %p\n",
                      dentry, dentry->d_name.len, dentry->d_name.name, inode);
+                BUG_ON(!d_unhashed(dentry));
                 d_add(dentry, inode);
                 err = 0;
         }