Received: by 2002:a25:7ec1:0:0:0:0:0 with SMTP id z184csp1262691ybc; Tue, 12 Nov 2019 17:36:59 -0800 (PST) X-Google-Smtp-Source: APXvYqys2uo3fPfWlYXazFiUiBFImp2hMAepA2D34i4z4u9UxMECJA7Jt3Fi5hJfNIZtUriQ2DTf X-Received: by 2002:a50:f699:: with SMTP id d25mr916963edn.72.1573609019384; Tue, 12 Nov 2019 17:36:59 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1573609019; cv=none; d=google.com; s=arc-20160816; b=UYNYAYKap47XanSIxnkRvhaC1gBJ+dSxpk7yIdQ+1II/GqXA03zofr0FYAhzak9FtU mXXQ4+x2l+ehIAPCtBBpsKqATl2XeNNZBn7VZj+Wi5t2qK19mLdmbMg2Q8n8YZbHcnw7 1mOv0ZNfPJTDF67MhoMps2hX1GgRek4DncL9YhQ/rYXi7VkcIEF85zkPfGHdkmSwPgbS 886au91U6gW5nZzOI1tuQHx2Hr+m55I6BnwNDWwrS+K97mOgU7h+Z51m7Uwh8wjrMjRp bFSiC6WvS7+TAZ5ZvieH8qcKHFEErq2Kh6zVMnQXcpBDt/AtNjsGEO9qHB7MFQa6Adtr CIFA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:content-transfer-encoding :content-disposition:mime-version:reply-to:message-id:subject:cc:to :from:date; bh=jZGLsV6wjRYY1tIsrcP9IFE3c2vPsyx/iGYOwt0ttRI=; b=FP5ERUxpTdaWpsksdqwx1rMWoGC8w1o22kZJvQxwnH8XztvGzYo6iaOIwSwkeu8LN1 eONCrEeCAvQB4vJZmCjaYkyliBEYiX0KrZbLV0CrxsSLeC0ry0/sDn+fRUMVl0JJbEKC 5NV6qsjxv1Kqvzxrd6rSyrRImXyfw0x07n+7y+oq3AY2LpTiQ2fnuaquG5SCWgOn+hnA 6cuCY3CmyaQdvZ9RBDSfGK/m/fd4gbxyDMZbf3WwjIqKbYIIX0tSbOGHJ3a5S2uQ6CVS pWjd3PWz9t6TgNvHZ2kx4w60PBMQpoUje31aT/Jr+LIUemBd0FFsHc2VzxObSnN4ASax mtkg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=alibaba.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id j44si315867eda.345.2019.11.12.17.36.33; Tue, 12 Nov 2019 17:36:59 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=alibaba.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727145AbfKMBfd (ORCPT + 99 others); Tue, 12 Nov 2019 20:35:33 -0500 Received: from out30-43.freemail.mail.aliyun.com ([115.124.30.43]:36775 "EHLO out30-43.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726977AbfKMBfc (ORCPT ); Tue, 12 Nov 2019 20:35:32 -0500 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R111e4;CH=green;DM=||false|;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04395;MF=tonylu@linux.alibaba.com;NM=1;PH=DS;RN=3;SR=0;TI=SMTPD_---0ThwHhR._1573608929; Received: from localhost(mailfrom:tonylu@linux.alibaba.com fp:SMTPD_---0ThwHhR._1573608929) by smtp.aliyun-inc.com(127.0.0.1); Wed, 13 Nov 2019 09:35:30 +0800 Date: Wed, 13 Nov 2019 09:35:29 +0800 From: Tony Lu To: idryomov@gmail.com Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org Subject: 'current_state' is uninitialized in rbd_object_map_update_finish() Message-ID: <20191113013529.GA64000@TonyMac-Alibaba> Reply-To: Tony Lu MIME-Version: 1.0 Content-Type: text/plain; charset=gb2312 Content-Disposition: inline Content-Transfer-Encoding: 8bit User-Agent: Mutt/1.12.2 (2019-09-21) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, There is a warning during compiling driver rbd for uninitialized 'current state' in rbd_object_map_update_finish(): drivers/block/rbd.c: In function 'rbd_object_map_callback': drivers/block/rbd.c:2122:21: warning: ??current_state?? may be used uninitialized in this function [-Wmaybe-uninitialized] (current_state == OBJECT_EXISTS && state == OBJECT_EXISTS_CLEAN)) drivers/block/rbd.c:2090:23: note: ??current_state?? was declared here u8 state, new_state, current_state; ^~~~~~~~~~~~~ Cheers. Tony Lu