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 BD8DCCE7A89 for ; Fri, 22 Sep 2023 23:01:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230235AbjIVXBr (ORCPT ); Fri, 22 Sep 2023 19:01:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36644 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229576AbjIVXBp (ORCPT ); Fri, 22 Sep 2023 19:01:45 -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 C4CE6AF; Fri, 22 Sep 2023 16:01:38 -0700 (PDT) Received: from eig-obgw-6002a.ext.cloudfilter.net ([10.0.30.222]) by cmsmtp with ESMTP id jkwDqENIFez0Cjp97q8wDu; Fri, 22 Sep 2023 23:01:13 +0000 Received: from gator4166.hostgator.com ([108.167.133.22]) by cmsmtp with ESMTPS id jp9UqaiqZbWAcjp9UqCtl4; Fri, 22 Sep 2023 23:01:37 +0000 X-Authority-Analysis: v=2.4 cv=dpnItns4 c=1 sm=1 tr=0 ts=650e1cd1 a=1YbLdUo/zbTtOZ3uB5T3HA==:117 a=P7XfKmiOJ4/qXqHZrN7ymg==:17 a=OWjo9vPv0XrRhIrVQ50Ab3nP57M=:19 a=dLZJa+xiwSxG16/P+YVxDGlgEgI=:19 a=IkcTkHD0fZMA:10 a=zNV7Rl7Rt7sA:10 a=wYkD_t78qR0A:10 a=NEAV23lmAAAA:8 a=pGLkceISAAAA:8 a=COk6AnOGAAAA:8 a=KKAkSRfTAAAA:8 a=tVI0ZWmoAAAA:8 a=VwQbUJbxAAAA:8 a=e5mUnYsNAAAA:8 a=cm27Pg_UAAAA:8 a=HSIKE4f6JIY9BbnNq1MA:9 a=QEXdDO2ut3YA:10 a=TjNXssC_j7lpFel5tvFf:22 a=cvBusfyB2V15izCimMoJ:22 a=-BPWgnxRz2uhmvdm1NTO:22 a=AjGcO6oz07-iQ99wixmX:22 a=Vxmtnl_E_bksehYqCbjh: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=2zK48vQolMqlRSqjrCvSBXgjsAGsv6hepauhi4xjwpA=; b=b/1EYxIBUgGg9cZaaUjjmBS/mU T2yEbpC2AZEdHIQFce+UFklWWGOgixs7mO+CKHnf06Wj3lTM9QRuwhvK+2SO19wHzObu9CLwmmvSS 4dOgYBpfteeN/G8IiOP4ZVetuaf5o6Cy9KGmXGoMaNauY6O+iPFWV0fV72EvQ5mwZxC6Dkg74SA3E a1ZrEaqFYpIJ55vv142MQF2bE+tdbkhAmX54s4nIsXKbLS3bfQ6DgLPLnRPaxA9M/AEuH5ImPeV23 yMuu/BVEnGSt08kaloGvrDygEYGGLJx2ejKtsDLcRnMTXbeCrWUvyxpWiIU8XvzTw4kSnqosp+LIZ IWwif/Wg==; Received: from [94.239.20.48] (port=43798 helo=[192.168.1.98]) by gator4166.hostgator.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.96) (envelope-from ) id 1qjkfx-000PVa-1n; Fri, 22 Sep 2023 13:14:49 -0500 Message-ID: Date: Fri, 22 Sep 2023 20:15:40 -0600 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.15.1 Subject: Re: [PATCH 4/9] drm/msm/dpu: Annotate struct dpu_hw_intr with __counted_by Content-Language: en-US To: Kees Cook , David Airlie Cc: Rob Clark , Abhinav Kumar , Dmitry Baryshkov , Sean Paul , Marijn Suijten , Daniel Vetter , Bjorn Andersson , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, Emma Anholt , Evan Quan , Alex Deucher , =?UTF-8?Q?Christian_K=c3=b6nig?= , "Pan, Xinhui" , Xiaojian Du , Huang Rui , Kevin Wang , Hawking Zhang , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , Chris Wilson , John Harrison , Andi Shyti , Matthew Brost , Ben Skeggs , Karol Herbst , Lyude Paul , Maxime Ripard , David Airlie , Gerd Hoffmann , Gurchetan Singh , Chia-I Wu , Zack Rusin , VMware Graphics Reviewers , Melissa Wen , Nathan Chancellor , Nick Desaulniers , Tom Rix , Le Ma , Lijo Lazar , Yifan Zhang , Prike Liang , Lang Yu , Tejas Upadhyay , Nirmoy Das , Andrzej Hajda , Neil Armstrong , Kuogee Hsieh , linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, nouveau@lists.freedesktop.org, virtualization@lists.linux-foundation.org, llvm@lists.linux.dev, linux-hardening@vger.kernel.org References: <20230922173110.work.084-kees@kernel.org> <20230922173216.3823169-4-keescook@chromium.org> From: "Gustavo A. R. Silva" In-Reply-To: <20230922173216.3823169-4-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: 94.239.20.48 X-Source-L: No X-Exim-ID: 1qjkfx-000PVa-1n X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: ([192.168.1.98]) [94.239.20.48]:43798 X-Source-Auth: gustavo@embeddedor.com X-Email-Count: 0 X-Org: HG=hgshared;ORG=hostgator; X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= X-Local-Domain: yes X-CMAE-Envelope: MS4xfBTSiONnvdIHSZ3JQhlL9W56GibH1LIbKgH8wBWWcVOg7ciR1Xw9JI0bCaIsKAfI73v3mTAUChfrdkr7PjDgkapIClpzYD4nPVtxOhVQTY1b1+R5VUxr QD+RivrRxrxPqvCMRXWU8kPuO2nxo27VKm8NMdU+IqqI25MpS2QAsRksjGVUUVBjgf+aaH0THPYapAxjVZZnSJ2XDZ3HnWjKe46JsANqN2KSClVbp6kOUw8t yVwnPtnk4VVVrfQByTHw6vb1hTQBO+JZz6PNsRXEgDgg+KB1OYrANdElWq4zMcsBoKrU00SID2FGBbd045c+Dw== Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 9/22/23 11:32, 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 dpu_hw_intr. > > [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci > > Cc: Rob Clark > Cc: Abhinav Kumar > Cc: Dmitry Baryshkov > Cc: Sean Paul > Cc: Marijn Suijten > Cc: David Airlie > Cc: Daniel Vetter > Cc: Bjorn Andersson > Cc: linux-arm-msm@vger.kernel.org > Cc: dri-devel@lists.freedesktop.org > Cc: freedreno@lists.freedesktop.org > Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva Thanks -- Gustavo > --- > drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h > index dab761e54863..50cf9523d367 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h > @@ -61,7 +61,7 @@ struct dpu_hw_intr { > void (*cb)(void *arg, int irq_idx); > void *arg; > atomic_t count; > - } irq_tbl[]; > + } irq_tbl[] __counted_by(total_irqs); > }; > > /**