--- x/fs/libfs.c
+++ y/fs/libfs.c
@@ -2234,6 +2234,7 @@ int path_from_stashed(struct dentry **st
 	path->dentry = stash_dentry(stashed, dentry);
 	if (path->dentry != dentry)
 		dput(dentry);
+	dget(dentry);
 
 out_path:
 	WARN_ON_ONCE(path->dentry->d_fsdata != stashed);
@@ -2258,5 +2259,6 @@ void stashed_dentry_prune(struct dentry
 	 * already cleared out @dentry and stashed their own
 	 * dentry in there.
 	 */
-	cmpxchg(stashed, dentry, NULL);
+	if (dentry == cmpxchg(stashed, dentry, NULL))
+		dput(dentry);
 }