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 322D3CD37A9 for ; Fri, 15 Sep 2023 20:33:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237177AbjIOUdV (ORCPT ); Fri, 15 Sep 2023 16:33:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36578 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237461AbjIOUdG (ORCPT ); Fri, 15 Sep 2023 16:33:06 -0400 Received: from omta034.useast.a.cloudfilter.net (omta034.useast.a.cloudfilter.net [44.202.169.33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E754F2703 for ; Fri, 15 Sep 2023 13:32:54 -0700 (PDT) Received: from eig-obgw-5009a.ext.cloudfilter.net ([10.0.29.176]) by cmsmtp with ESMTP id hCWhqcS10ez0ChFUNqBqvn; Fri, 15 Sep 2023 20:32:31 +0000 Received: from gator4166.hostgator.com ([108.167.133.22]) by cmsmtp with ESMTPS id hFUiqD7Pur4o2hFUjqil8C; Fri, 15 Sep 2023 20:32:53 +0000 X-Authority-Analysis: v=2.4 cv=KIpJsXJo c=1 sm=1 tr=0 ts=6504bf75 a=1YbLdUo/zbTtOZ3uB5T3HA==:117 a=WzbPXH4gqzPVN0x6HrNMNA==:17 a=OWjo9vPv0XrRhIrVQ50Ab3nP57M=:19 a=dLZJa+xiwSxG16/P+YVxDGlgEgI=:19 a=IkcTkHD0fZMA:10 a=zNV7Rl7Rt7sA:10 a=wYkD_t78qR0A:10 a=NEAV23lmAAAA:8 a=KKAkSRfTAAAA:8 a=VwQbUJbxAAAA:8 a=JfrnYn6hAAAA:8 a=cm27Pg_UAAAA:8 a=V47ufcyD4mhEMgMxg3EA:9 a=QEXdDO2ut3YA:10 a=cvBusfyB2V15izCimMoJ:22 a=AjGcO6oz07-iQ99wixmX:22 a=1CNFftbPRP8L7MoqJWF3:22 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=XFEFDsUGcQuwzOD604Jfh3l18cRloCISW3j/XKCvcMY=; b=TfhYNDw9/XgtpqEaLGkQnL48Gb rgr/7PNrKsIg5+L9A6MSF4fqZSDRgrfVNEFotU9ELS9jKSZcTPY2UsqvZlbT73dteEuNro95hgjwk z7mtQnhR4pdpWPxjEoRNgKuNB3p2dWGHdfx4Oh96FPy6PaZS1yA6Y7LaEXeRGkFaA/RG1ZV9LRBEZ ZdfM4PDlelRFW1pVxiLmbjJUskRLVOclenMV+QKC+DZ4mW4fR25QsEphq/8V3ocWO6HFOBoPt1OD8 msjYwWog1dc+3Q4K794BtpZIY1b46H+fFywZp9fCmK7vRcPwYJHzZsGp8ItBEZtQzbCbw0XquO8iE GwAXkGXg==; Received: from 187-162-21-192.static.axtel.net ([187.162.21.192]:40344 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 1qhFUh-002OkC-0c; Fri, 15 Sep 2023 15:32:51 -0500 Message-ID: Date: Fri, 15 Sep 2023 14:33:42 -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] wifi: wcn36xx: Annotate struct wcn36xx_hal_ind_msg with __counted_by Content-Language: en-US To: Kees Cook , Loic Poulain Cc: Kalle Valo , wcn36xx@lists.infradead.org, linux-wireless@vger.kernel.org, Nathan Chancellor , Nick Desaulniers , Tom Rix , linux-kernel@vger.kernel.org, llvm@lists.linux.dev, linux-hardening@vger.kernel.org References: <20230915200622.never.820-kees@kernel.org> From: "Gustavo A. R. Silva" In-Reply-To: <20230915200622.never.820-kees@kernel.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: 1qhFUh-002OkC-0c 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]:40344 X-Source-Auth: gustavo@embeddedor.com X-Email-Count: 178 X-Org: HG=hgshared;ORG=hostgator; X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= X-Local-Domain: yes X-CMAE-Envelope: MS4xfLYQlDwTWgF/golxtF9JyIZhe59+zOt57dArz7OD/Obdg8Wi3t3hFVK0jLXOFmCE43FnVEfkWCKwT7SsN0aiZJkZvXF7Ydlp581DMqWGCSIQNi/rKv0K k89eqM35viV2VlxbSfJM1JcExjKrE+MMieDJKT4e2a5Z7osi98nQttLG7BPHtHoTrR4G57Rie13uajKsquZ+YL26g3pFwrfF4xmJhI/Z5wxyzoZphs1Tcf5+ Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org On 9/15/23 14:06, 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 wcn36xx_hal_ind_msg. > > [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci > > Cc: Loic Poulain > Cc: Kalle Valo > Cc: wcn36xx@lists.infradead.org > Cc: linux-wireless@vger.kernel.org > Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva Thanks -- Gustavo > --- > drivers/net/wireless/ath/wcn36xx/smd.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/net/wireless/ath/wcn36xx/smd.h b/drivers/net/wireless/ath/wcn36xx/smd.h > index cf15cde2a364..2c1ed9e570bf 100644 > --- a/drivers/net/wireless/ath/wcn36xx/smd.h > +++ b/drivers/net/wireless/ath/wcn36xx/smd.h > @@ -47,7 +47,7 @@ struct wcn36xx_fw_msg_status_rsp { > struct wcn36xx_hal_ind_msg { > struct list_head list; > size_t msg_len; > - u8 msg[]; > + u8 msg[] __counted_by(msg_len); > }; > > struct wcn36xx;