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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT 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 E9B48C3279B for ; Wed, 4 Jul 2018 16:37:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A5F8D23CFD for ; Wed, 4 Jul 2018 16:37:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A5F8D23CFD Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=embeddedor.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 S1752719AbeGDQhd (ORCPT ); Wed, 4 Jul 2018 12:37:33 -0400 Received: from gateway32.websitewelcome.com ([192.185.145.107]:18401 "EHLO gateway32.websitewelcome.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752019AbeGDQha (ORCPT ); Wed, 4 Jul 2018 12:37:30 -0400 Received: from cm17.websitewelcome.com (cm17.websitewelcome.com [100.42.49.20]) by gateway32.websitewelcome.com (Postfix) with ESMTP id 11E61F4F6D for ; Wed, 4 Jul 2018 11:37:30 -0500 (CDT) Received: from gator4166.hostgator.com ([108.167.133.22]) by cmsmtp with SMTP id akmPfKqayPvAdakmUfSYx5; Wed, 04 Jul 2018 11:37:29 -0500 X-Authority-Reason: nr=8 Received: from [189.250.65.56] (port=48874 helo=embeddedor) by gator4166.hostgator.com with esmtpa (Exim 4.91) (envelope-from ) id 1fakmO-001Osb-SN; Wed, 04 Jul 2018 11:37:20 -0500 Date: Wed, 4 Jul 2018 11:37:20 -0500 From: "Gustavo A. R. Silva" To: Harsh Jain , Herbert Xu , "David S. Miller" Cc: linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, "Gustavo A. R. Silva" Subject: [PATCH] crypto: chtls - use 64-bit arithmetic instead of 32-bit Message-ID: <20180704163720.GA16912@embeddedor.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.24 (2015-08-30) X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - gator4166.hostgator.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - embeddedor.com X-BWhitelist: no X-Source-IP: 189.250.65.56 X-Source-L: No X-Exim-ID: 1fakmO-001Osb-SN X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: (embeddedor) [189.250.65.56]:48874 X-Source-Auth: gustavo@embeddedor.com X-Email-Count: 5 X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= X-Local-Domain: yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Cast *val* to u64 in order to give the compiler complete information about the proper arithmetic to use. Notice that such variable is used in a context that expects an expression of type u64 (64 bits, unsigned) and the following expression is currently being evaluated using 32-bit arithmetic: val << bit_pos Addresses-Coverity-ID: 1467425 ("Unintentional integer overflow") Signed-off-by: Gustavo A. R. Silva --- drivers/crypto/chelsio/chtls/chtls_hw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/crypto/chelsio/chtls/chtls_hw.c b/drivers/crypto/chelsio/chtls/chtls_hw.c index 55d5014..4909607 100644 --- a/drivers/crypto/chelsio/chtls/chtls_hw.c +++ b/drivers/crypto/chelsio/chtls/chtls_hw.c @@ -97,7 +97,7 @@ static int chtls_set_tcb_field(struct sock *sk, u16 word, u64 mask, u64 val) int chtls_set_tcb_tflag(struct sock *sk, unsigned int bit_pos, int val) { return chtls_set_tcb_field(sk, 1, 1ULL << bit_pos, - val << bit_pos); + (u64)val << bit_pos); } static int chtls_set_tcb_keyid(struct sock *sk, int keyid) -- 2.7.4