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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EC924C38A02 for ; Fri, 28 Oct 2022 14:00:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230295AbiJ1OAc (ORCPT ); Fri, 28 Oct 2022 10:00:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39126 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230433AbiJ1OA3 (ORCPT ); Fri, 28 Oct 2022 10:00:29 -0400 Received: from mail.netfilter.org (mail.netfilter.org [217.70.188.207]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 2FA5E53033 for ; Fri, 28 Oct 2022 07:00:27 -0700 (PDT) From: Pablo Neira Ayuso To: netfilter-devel@vger.kernel.org Cc: kuba@kernel.org Subject: [PATCH nf-next] netfilter: nft_payload: use __b16 to store gre version Date: Fri, 28 Oct 2022 16:00:21 +0200 Message-Id: <20221028140021.3727-1-pablo@netfilter.org> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: netfilter-devel@vger.kernel.org GRE_VERSION and GRE_VERSION0 are expressed in network byte order, use __be16. Uncovered by sparse: net/netfilter/nft_payload.c:112:25: warning: incorrect type in assignment (different base types) net/netfilter/nft_payload.c:112:25: expected unsigned int [usertype] version net/netfilter/nft_payload.c:112:25: got restricted __be16 net/netfilter/nft_payload.c:114:22: warning: restricted __be16 degrades to integer Fixes: c247897d7c19 ("netfilter: nft_payload: access GRE payload via inner offset") Reported-by: Jakub Kicinski Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nft_payload.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/netfilter/nft_payload.c b/net/netfilter/nft_payload.c index 9d2ac764a14c..53e64d8aa01f 100644 --- a/net/netfilter/nft_payload.c +++ b/net/netfilter/nft_payload.c @@ -102,8 +102,9 @@ static int __nft_payload_inner_offset(struct nft_pktinfo *pkt) } break; case IPPROTO_GRE: { - u32 offset = sizeof(struct gre_base_hdr), version; + u32 offset = sizeof(struct gre_base_hdr); struct gre_base_hdr *gre, _gre; + __be16 version; gre = skb_header_pointer(pkt->skb, thoff, sizeof(_gre), &_gre); if (!gre) -- 2.30.2