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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=no 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 EEDAAC433FF for ; Sat, 3 Aug 2019 00:57:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C5EAB2086A for ; Sat, 3 Aug 2019 00:57:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387943AbfHCA5e (ORCPT ); Fri, 2 Aug 2019 20:57:34 -0400 Received: from shards.monkeyblade.net ([23.128.96.9]:52892 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387633AbfHCA5e (ORCPT ); Fri, 2 Aug 2019 20:57:34 -0400 Received: from localhost (unknown [IPv6:2601:601:9f80:35cd::d71]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id CEC221265125D; Fri, 2 Aug 2019 17:57:33 -0700 (PDT) Date: Fri, 02 Aug 2019 17:57:33 -0700 (PDT) Message-Id: <20190802.175733.1007297377658559404.davem@davemloft.net> To: xywang.sjtu@sjtu.edu.cn Cc: aelior@marvell.com, GR-everest-linux-l2@marvell.com, netdev@vger.kernel.org Subject: Re: [PATCH] net/ethernet/qlogic/qed: force the string buffer NULL-terminated From: David Miller In-Reply-To: <20190731081542.14178-1-xywang.sjtu@sjtu.edu.cn> References: <20190731081542.14178-1-xywang.sjtu@sjtu.edu.cn> X-Mailer: Mew version 6.8 on Emacs 26.1 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Fri, 02 Aug 2019 17:57:34 -0700 (PDT) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Wang Xiayang Date: Wed, 31 Jul 2019 16:15:42 +0800 > strncpy() does not ensure NULL-termination when the input string > size equals to the destination buffer size 30. > The output string is passed to qed_int_deassertion_aeu_bit() > which calls DP_INFO() and relies NULL-termination. > > Use strlcpy instead. The other conditional branch above strncpy() > needs no fix as snprintf() ensures NULL-termination. > > This issue is identified by a Coccinelle script. > > Signed-off-by: Wang Xiayang Applied.