diff --git a/fs/smb/server/smb2pdu.c b/fs/smb/server/smb2pdu.c
index e3ab66dcb92b..4bde5ab2c881 100644
--- a/fs/smb/server/smb2pdu.c
+++ b/fs/smb/server/smb2pdu.c
@@ -9308,6 +9308,13 @@ int smb2_lock(struct ksmbd_work *work)
 	}
 
 	list_for_each_entry_safe(smb_lock, tmp, &lock_list, llist) {
+		if (lock_count > 1 &&
+		    !(le32_to_cpu(lock_ele[0].Flags) & SMB2_LOCKFLAG_UNLOCK) &&
+		    !(smb_lock->flags & SMB2_LOCKFLAG_FAIL_IMMEDIATELY)) {
+			err = -EINVAL;
+			goto out;
+		}
+
 		if (smb_lock->cmd < 0) {
 			err = -EINVAL;
 			goto out;