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 4AC63C64EB4 for ; Thu, 17 Aug 2023 21:23:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1355291AbjHQVXT (ORCPT ); Thu, 17 Aug 2023 17:23:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45668 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1355326AbjHQVW7 (ORCPT ); Thu, 17 Aug 2023 17:22:59 -0400 Received: from omta040.useast.a.cloudfilter.net (omta040.useast.a.cloudfilter.net [44.202.169.39]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5A42426B7 for ; Thu, 17 Aug 2023 14:22:55 -0700 (PDT) Received: from eig-obgw-5005a.ext.cloudfilter.net ([10.0.29.234]) by cmsmtp with ESMTP id Wfiwqh1TyyYOwWkSEqtrPx; Thu, 17 Aug 2023 21:22:54 +0000 Received: from gator4166.hostgator.com ([108.167.133.22]) by cmsmtp with ESMTPS id WkSDqKHSZi8uRWkSEq1YS8; Thu, 17 Aug 2023 21:22:54 +0000 X-Authority-Analysis: v=2.4 cv=JOsoDuGb c=1 sm=1 tr=0 ts=64de8fae a=1YbLdUo/zbTtOZ3uB5T3HA==:117 a=WzbPXH4gqzPVN0x6HrNMNA==:17 a=OWjo9vPv0XrRhIrVQ50Ab3nP57M=:19 a=dLZJa+xiwSxG16/P+YVxDGlgEgI=:19 a=IkcTkHD0fZMA:10 a=UttIx32zK-AA:10 a=wYkD_t78qR0A:10 a=NEAV23lmAAAA:8 a=stkexhm8AAAA:8 a=J1Y8HTJGAAAA:8 a=1XWaLZrsAAAA:8 a=VwQbUJbxAAAA:8 a=20KFwNOVAAAA:8 a=cm27Pg_UAAAA:8 a=YSKGN3ub9cUXa_79IdMA:9 a=QEXdDO2ut3YA:10 a=pIW3pCRaVxJDc-hWtpF8:22 a=y1Q9-5lHfBjTkpIzbSAN:22 a=AjGcO6oz07-iQ99wixmX:22 a=xmb-EsYY8bH0VWELuYED:22 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=embeddedor.com; s=default; h=Content-Transfer-Encoding:Content-Type: In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date:Message-ID:Sender :Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=WMTEtoZYgunGGNiDKyCUfv/YwFOmWcnbP9DZsuaFRbU=; b=eJpXyuRPPP1dJu6Z/jtCpkeXCX 38KqT2/3wwGNmhNCF7muzcl8j5ehDY40SlFAWIjAwTxDeuki/uqa71bppUI+XHPKGaiqWfYlW9ufY 5uDANIJeGRR2/s7iiUE/xKddAaloO/+u2ovEcr8d2u/ZDgb4wHIvs60G0+PwIlX32VsF2yiixmo0H hEUq7L083A64B6dS8z9/yBhkUMU3FLLakPfYMcW28ChoZQV9HffLUOcUUj6ALBGeaGg5FtWkiYXPZ sIn8gMc3Yc8YjauM2wtw+HFYSJyS3ShkfsoRQgdJqm8KIEwHujLSni/vMRlJksoAyzSNBAXMQcJN1 sDpu/Apw==; Received: from 187-162-21-192.static.axtel.net ([187.162.21.192]:42350 helo=[192.168.15.8]) by gator4166.hostgator.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.96) (envelope-from ) id 1qWkSB-001kdk-30; Thu, 17 Aug 2023 16:22:51 -0500 Message-ID: Date: Thu, 17 Aug 2023 15:23:53 -0600 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.13.0 Subject: Re: [PATCH 2/7] wifi: cfg80211: Annotate struct cfg80211_cqm_config with __counted_by Content-Language: en-US To: Kees Cook , Johannes Berg Cc: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , linux-wireless@vger.kernel.org, netdev@vger.kernel.org, Nathan Chancellor , Nick Desaulniers , Tom Rix , linux-kernel@vger.kernel.org, llvm@lists.linux.dev, linux-hardening@vger.kernel.org References: <20230817211114.never.208-kees@kernel.org> <20230817211531.4193219-2-keescook@chromium.org> From: "Gustavo A. R. Silva" In-Reply-To: <20230817211531.4193219-2-keescook@chromium.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit 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: 187.162.21.192 X-Source-L: No X-Exim-ID: 1qWkSB-001kdk-30 X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: 187-162-21-192.static.axtel.net ([192.168.15.8]) [187.162.21.192]:42350 X-Source-Auth: gustavo@embeddedor.com X-Email-Count: 62 X-Org: HG=hgshared;ORG=hostgator; X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= X-Local-Domain: yes X-CMAE-Envelope: MS4xfB40bWHOAoy1A1CuFtPg0SByOHqIo7c5LoxTy27nkk/rOYj5uYIXAgiI1gzDPh9bJRrltmkZC5mUEfPPTjjpqtqcyDnO2zPA0nzQeiWDbC005gvOzwD1 1xsUSgexuFI0UA+CLMqhAAYStsydWsef4+EShNel0P8dKE68n7oaljrUd72KdFYR7yGVac2Xjqkz8pmOazqxiVRODVqeWdEkfy5GQNvW2V1LhBUzgjr9yBeG Precedence: bulk List-ID: X-Mailing-List: linux-hardening@vger.kernel.org On 8/17/23 15:15, Kees Cook wrote: > Prepare for the coming implementation by GCC and Clang of the __counted_by > attribute. Flexible array members annotated with __counted_by can have > their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS > (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family > functions). > > As found with Coccinelle[1], add __counted_by for struct cfg80211_cqm_config. > > [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci > > Cc: Johannes Berg > Cc: "David S. Miller" > Cc: Eric Dumazet > Cc: Jakub Kicinski > Cc: Paolo Abeni > Cc: linux-wireless@vger.kernel.org > Cc: netdev@vger.kernel.org > Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva Thanks -- Gustavo > --- > net/wireless/core.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/net/wireless/core.h b/net/wireless/core.h > index 8a807b609ef7..507d184b8b40 100644 > --- a/net/wireless/core.h > +++ b/net/wireless/core.h > @@ -298,7 +298,7 @@ struct cfg80211_cqm_config { > u32 rssi_hyst; > s32 last_rssi_event_value; > int n_rssi_thresholds; > - s32 rssi_thresholds[]; > + s32 rssi_thresholds[] __counted_by(n_rssi_thresholds); > }; > > void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev);