From patchwork Tue Aug 10 17:31:20 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "gregkh@linuxfoundation.org" X-Patchwork-Id: 494910 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=-19.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT 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 CCE06C4338F for ; Tue, 10 Aug 2021 18:06:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B12BC61073 for ; Tue, 10 Aug 2021 18:06:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237775AbhHJSGU (ORCPT ); Tue, 10 Aug 2021 14:06:20 -0400 Received: from mail.kernel.org ([198.145.29.99]:39396 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239000AbhHJSEk (ORCPT ); Tue, 10 Aug 2021 14:04:40 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id E5CAB6154B; Tue, 10 Aug 2021 17:48:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1628617711; bh=q4kLnBUtg70BAak9qRJZeHe9ng5xHLv4QKUDSg6mxrc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=wyJ8XewXkfSjy0fPnewUTeusXdufYTQM5XsOJZ5v02dsoyFYoNkXcy0FL68SYup82 AJW775Tooqdidtemi5Q6Hv9sDM3J03bJZT9EWpE0NNzNt4ew6tDfaIk50tXWkdJo3p 4I8wRNE81hQR4Nb8yAL51W13lDSydMCs/jkq0RoQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, kernel test robot , "Paulo Alcantara (SUSE)" , Steve French , Sasha Levin Subject: [PATCH 5.13 172/175] smb3: rc uninitialized in one fallocate path Date: Tue, 10 Aug 2021 19:31:20 +0200 Message-Id: <20210810173006.612305968@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210810173000.928681411@linuxfoundation.org> References: <20210810173000.928681411@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Steve French [ Upstream commit 5ad4df56cd2158965f73416d41fce37906724822 ] Clang detected a problem with rc possibly being unitialized (when length is zero) in a recently added fallocate code path. Reported-by: kernel test robot Reviewed-by: Paulo Alcantara (SUSE) Signed-off-by: Steve French Signed-off-by: Sasha Levin --- fs/cifs/smb2ops.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 398c941e3897..f77156187a0a 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -3613,7 +3613,8 @@ static int smb3_simple_fallocate_write_range(unsigned int xid, char *buf) { struct cifs_io_parms io_parms = {0}; - int rc, nbytes; + int nbytes; + int rc = 0; struct kvec iov[2]; io_parms.netfid = cfile->fid.netfid;