diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c
index a2b7335515..3119f01117 100644
--- a/hw/9pfs/9p.c
+++ b/hw/9pfs/9p.c
@@ -3908,6 +3908,10 @@ static void coroutine_fn v9fs_lock(void *opaque)
         err = -ENOENT;
         goto out_nofid;
     }
+    if (!fid_has_valid_file_handle(pdu->s, fidp)) {
+        err = -EBADF;
+        goto out;
+    }
     err = v9fs_co_fstat(pdu, fidp, &stbuf);
     if (err < 0) {
         goto out;
@@ -3953,6 +3957,10 @@ static void coroutine_fn v9fs_getlock(void *opaque)
         err = -ENOENT;
         goto out_nofid;
     }
+    if (!fid_has_valid_file_handle(pdu->s, fidp)) {
+        err = -EBADF;
+        goto out;
+    }
     err = v9fs_co_fstat(pdu, fidp, &stbuf);
     if (err < 0) {
         goto out;