From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CE1FFC32789 for ; Tue, 6 Nov 2018 09:30:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9B8B920862 for ; Tue, 6 Nov 2018 09:30:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9B8B920862 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=virtuozzo.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730377AbeKFSzM (ORCPT ); Tue, 6 Nov 2018 13:55:12 -0500 Received: from relay.sw.ru ([185.231.240.75]:59168 "EHLO relay.sw.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729430AbeKFSzL (ORCPT ); Tue, 6 Nov 2018 13:55:11 -0500 Received: from [172.16.25.169] (helo=localhost.localdomain) by relay.sw.ru with esmtp (Exim 4.90_1) (envelope-from ) id 1gJxhC-0002w3-9j; Tue, 06 Nov 2018 12:30:50 +0300 Subject: [PATCH 4/6] fuse: Check for FR_SENT bit in fuse_dev_do_write() From: Kirill Tkhai To: miklos@szeredi.hu, ktkhai@virtuozzo.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Date: Tue, 06 Nov 2018 12:30:49 +0300 Message-ID: <154149664975.17764.16537105755726576371.stgit@localhost.localdomain> In-Reply-To: <154149586524.17764.5252013294539109287.stgit@localhost.localdomain> References: <154149586524.17764.5252013294539109287.stgit@localhost.localdomain> User-Agent: StGit/0.18 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org It's not possible to have answer to a request, before the request is actually sent. Add sanity check for that. Signed-off-by: Kirill Tkhai --- fs/fuse/dev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index 739968ee8b0c..c603f1ebf0fd 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -1947,7 +1947,7 @@ static ssize_t fuse_dev_do_write(struct fuse_dev *fud, goto err_unlock_pq; req = request_find(fpq, oh.unique & ~FUSE_INT_REQ_BIT); - if (!req) + if (!req || !test_bit(FR_SENT, &req->flags)) goto err_unlock_pq; /* Is it an interrupt reply ID? */