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[198.145.64.163]) by smtp.gmail.com with ESMTPSA id l10-20020a170903120a00b0016f196209c9sm3102876plh.123.2022.09.21.22.26.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Sep 2022 22:26:28 -0700 (PDT) Date: Wed, 21 Sep 2022 22:26:27 -0700 From: Kees Cook To: Kalle Valo Message-ID: <202209212224.A2F1DB798@keescook> References: <20220922031013.2150682-1-keescook@chromium.org> <20220922031013.2150682-11-keescook@chromium.org> <87fsgk6nys.fsf@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <87fsgk6nys.fsf@kernel.org> X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date; bh=1AAj0jz/3WOf/ZinmBg4e5WZyKIExnDIP+4ApRXDWXk=; b=E6vw8sjIHY/i68R43dGnMLa/5LLUaNZd7XsoFQWcc3w5wUJdtXNsxsEfsPht7kxdNG JJ1tXBTf3XQqnlgOex/RZ+o0XMhSMgfcjsVoIr6koV6H3KyiaZ1lUXPNyODzP4yferwZ bLRSqfuB8yrx2QNr5YGtL8EgG0hPZHJq7V7xk= X-Mailman-Original-Authentication-Results: smtp2.osuosl.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.a=rsa-sha256 header.s=google header.b=E6vw8sjI Subject: Re: [Intel-wired-lan] [PATCH 10/12] iwlwifi: Track scan_cmd allocation size explicitly X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-wireless@vger.kernel.org, llvm@lists.linux.dev, dri-devel@lists.freedesktop.org, linux-mm@kvack.org, Eric Dumazet , linux-hardening@vger.kernel.org, Gregory Greenman , Sumit Semwal , dev@openvswitch.org, x86@kernel.org, intel-wired-lan@lists.osuosl.org, David Rientjes , Miguel Ojeda , Jakub Kicinski , Paolo Abeni , linux-media@vger.kernel.org, Jacob Shin , Marco Elver , Johannes Berg , Josef Bacik , linaro-mm-sig@lists.linaro.org, Yonghong Song , David Sterba , Andrew Morton , Vlastimil Babka , Alex Elder , Greg Kroah-Hartman , Nick Desaulniers , linux-kernel@vger.kernel.org, Christian =?iso-8859-1?Q?K=F6nig?= , Pekka Enberg , Daniel Micay , netdev@vger.kernel.org, linux-fsdevel@vger.kernel.org, Joonsoo Kim , "David S. Miller" , linux-btrfs@vger.kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" On Thu, Sep 22, 2022 at 07:18:51AM +0300, Kalle Valo wrote: > Kees Cook writes: > > > In preparation for reducing the use of ksize(), explicitly track the > > size of scan_cmd allocations. This also allows for noticing if the scan > > size changes unexpectedly. Note that using ksize() was already incorrect > > here, in the sense that ksize() would not match the actual allocation > > size, which would trigger future run-time allocation bounds checking. > > (In other words, memset() may know how large scan_cmd was allocated for, > > but ksize() will return the upper bounds of the actually allocated memory, > > causing a run-time warning about an overflow.) > > > > Cc: Gregory Greenman > > Cc: Kalle Valo > > Cc: Johannes Berg > > Cc: linux-wireless@vger.kernel.org > > Cc: netdev@vger.kernel.org > > Signed-off-by: Kees Cook > > Via which tree is this iwlwifi patch going? Normally via wireless-next > or something else? This doesn't depend on the kmalloc_size_roundup() helper at all, so I would be happy for it to go via wireless-next if the patch seems reasonable. -- Kees Cook _______________________________________________ Intel-wired-lan mailing list Intel-wired-lan@osuosl.org https://lists.osuosl.org/mailman/listinfo/intel-wired-lan 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 A1388C6FA91 for ; Thu, 22 Sep 2022 05:26:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230147AbiIVF0d (ORCPT ); Thu, 22 Sep 2022 01:26:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42532 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229635AbiIVF0b (ORCPT ); Thu, 22 Sep 2022 01:26:31 -0400 Received: from mail-pg1-x531.google.com (mail-pg1-x531.google.com [IPv6:2607:f8b0:4864:20::531]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6C99DA1A6E for ; Wed, 21 Sep 2022 22:26:29 -0700 (PDT) Received: by mail-pg1-x531.google.com with SMTP id f193so8127301pgc.0 for ; Wed, 21 Sep 2022 22:26:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date; bh=1AAj0jz/3WOf/ZinmBg4e5WZyKIExnDIP+4ApRXDWXk=; b=E6vw8sjIHY/i68R43dGnMLa/5LLUaNZd7XsoFQWcc3w5wUJdtXNsxsEfsPht7kxdNG JJ1tXBTf3XQqnlgOex/RZ+o0XMhSMgfcjsVoIr6koV6H3KyiaZ1lUXPNyODzP4yferwZ bLRSqfuB8yrx2QNr5YGtL8EgG0hPZHJq7V7xk= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date; bh=1AAj0jz/3WOf/ZinmBg4e5WZyKIExnDIP+4ApRXDWXk=; b=Sxd8iFe/V6llPsX9DI5yUnqIeyvCddvf8ePSU/ClrJLp5k+hPpTTUiJScrIU+HTCh2 rZMMQGuwFW8Qe5kii/Lh7AWCVD72TlZLoeYFF7V6BkH86YScWLcPMAKq2rvkcnP84zxt zlQlWXv/1CWwAbsCOP+VxYKw6pB+J5t6UYSBZq5mXH7w7oIM+B1hpqD88wH/Vm9ZwDlF DAXFOOIscodswRTRRH/W1O2ZZh7SQ63HKT1kg201tWmF6t7i9K0493Y1nC2+xJShLzlA Qu4qIXbYnLfWOVTaRsGhidB9iLfychVX/gNqAdxbwAX/WohVv7H1f9CS2FWkwm7zJHeL zxaw== X-Gm-Message-State: ACrzQf1TP0RLInvdeD5UF02lYP9B+Qk/KMA84x2B1bwUSPK+dvJA/xru 0LFPdre/+aXwZIn+snev94qdbw== X-Google-Smtp-Source: AMsMyM4a+GHcnQt0UeqKstHRefYZ2pfi5aegxBG+GRLeLtm77LwF22DDWI605QZJjTDKHxZFsdcd6w== X-Received: by 2002:a63:cf56:0:b0:439:41ed:78fc with SMTP id b22-20020a63cf56000000b0043941ed78fcmr1597609pgj.419.1663824388949; Wed, 21 Sep 2022 22:26:28 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id l10-20020a170903120a00b0016f196209c9sm3102876plh.123.2022.09.21.22.26.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Sep 2022 22:26:28 -0700 (PDT) Date: Wed, 21 Sep 2022 22:26:27 -0700 From: Kees Cook To: Kalle Valo Cc: Vlastimil Babka , Gregory Greenman , Johannes Berg , linux-wireless@vger.kernel.org, netdev@vger.kernel.org, Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Greg Kroah-Hartman , Nick Desaulniers , Alex Elder , Josef Bacik , David Sterba , Sumit Semwal , Christian =?iso-8859-1?Q?K=F6nig?= , Jesse Brandeburg , Daniel Micay , Yonghong Song , Marco Elver , Miguel Ojeda , Jacob Shin , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-btrfs@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-fsdevel@vger.kernel.org, intel-wired-lan@lists.osuosl.org, dev@openvswitch.org, x86@kernel.org, llvm@lists.linux.dev, linux-hardening@vger.kernel.org Subject: Re: [PATCH 10/12] iwlwifi: Track scan_cmd allocation size explicitly Message-ID: <202209212224.A2F1DB798@keescook> References: <20220922031013.2150682-1-keescook@chromium.org> <20220922031013.2150682-11-keescook@chromium.org> <87fsgk6nys.fsf@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87fsgk6nys.fsf@kernel.org> Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On Thu, Sep 22, 2022 at 07:18:51AM +0300, Kalle Valo wrote: > Kees Cook writes: > > > In preparation for reducing the use of ksize(), explicitly track the > > size of scan_cmd allocations. This also allows for noticing if the scan > > size changes unexpectedly. Note that using ksize() was already incorrect > > here, in the sense that ksize() would not match the actual allocation > > size, which would trigger future run-time allocation bounds checking. > > (In other words, memset() may know how large scan_cmd was allocated for, > > but ksize() will return the upper bounds of the actually allocated memory, > > causing a run-time warning about an overflow.) > > > > Cc: Gregory Greenman > > Cc: Kalle Valo > > Cc: Johannes Berg > > Cc: linux-wireless@vger.kernel.org > > Cc: netdev@vger.kernel.org > > Signed-off-by: Kees Cook > > Via which tree is this iwlwifi patch going? Normally via wireless-next > or something else? This doesn't depend on the kmalloc_size_roundup() helper at all, so I would be happy for it to go via wireless-next if the patch seems reasonable. -- Kees Cook 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B0ED1C6FA82 for ; Thu, 22 Sep 2022 05:26:33 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B61B610E463; Thu, 22 Sep 2022 05:26:32 +0000 (UTC) Received: from mail-pf1-x432.google.com (mail-pf1-x432.google.com [IPv6:2607:f8b0:4864:20::432]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5B41710E463 for ; Thu, 22 Sep 2022 05:26:29 +0000 (UTC) Received: by mail-pf1-x432.google.com with SMTP id a80so8191194pfa.4 for ; Wed, 21 Sep 2022 22:26:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date; bh=1AAj0jz/3WOf/ZinmBg4e5WZyKIExnDIP+4ApRXDWXk=; b=E6vw8sjIHY/i68R43dGnMLa/5LLUaNZd7XsoFQWcc3w5wUJdtXNsxsEfsPht7kxdNG JJ1tXBTf3XQqnlgOex/RZ+o0XMhSMgfcjsVoIr6koV6H3KyiaZ1lUXPNyODzP4yferwZ bLRSqfuB8yrx2QNr5YGtL8EgG0hPZHJq7V7xk= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date; bh=1AAj0jz/3WOf/ZinmBg4e5WZyKIExnDIP+4ApRXDWXk=; b=vxmnug+JcritYUslOiMmPZlaqaHWusYb9vIddOnK5Nvaorh6zcAp3oU6ItvG40aw57 ky2yFDJqjnkXAIHlPYcI8q7PHMgH4L9pXnXlmeb5YUcdfVnklgN8ZvHSI3Ur4QK5lyDO 99hWGhYoBPp1Au5Knh83+KhYKcSIzC60QHKtv+/mN1b4Z2bUTKCD5SD7+MaRdfm1kW0o xiRK581MHccclHCySnNvpQoBSJe1MnhTXIDNj4pEhvyUJI3R2o03Djf8PO/GPxC6ygwN oRzmqbJ4cvG4poSO9x8C9QMcFtGp1TaJNfhHW2fiZZ2VqJ5pqPADETQwSTKmojej5vo0 P9OA== X-Gm-Message-State: ACrzQf2SqwsCOS/zazyYsDqQ4L3ql7OjWxaNsbzk6L3KEaFLTrqGT/Rd FPfFUU+I5r8FMbvIclf66rB/UQ== X-Google-Smtp-Source: AMsMyM4a+GHcnQt0UeqKstHRefYZ2pfi5aegxBG+GRLeLtm77LwF22DDWI605QZJjTDKHxZFsdcd6w== X-Received: by 2002:a63:cf56:0:b0:439:41ed:78fc with SMTP id b22-20020a63cf56000000b0043941ed78fcmr1597609pgj.419.1663824388949; Wed, 21 Sep 2022 22:26:28 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id l10-20020a170903120a00b0016f196209c9sm3102876plh.123.2022.09.21.22.26.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Sep 2022 22:26:28 -0700 (PDT) Date: Wed, 21 Sep 2022 22:26:27 -0700 From: Kees Cook To: Kalle Valo Subject: Re: [PATCH 10/12] iwlwifi: Track scan_cmd allocation size explicitly Message-ID: <202209212224.A2F1DB798@keescook> References: <20220922031013.2150682-1-keescook@chromium.org> <20220922031013.2150682-11-keescook@chromium.org> <87fsgk6nys.fsf@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87fsgk6nys.fsf@kernel.org> X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-wireless@vger.kernel.org, llvm@lists.linux.dev, dri-devel@lists.freedesktop.org, linux-mm@kvack.org, Eric Dumazet , linux-hardening@vger.kernel.org, Gregory Greenman , Sumit Semwal , dev@openvswitch.org, x86@kernel.org, Jesse Brandeburg , intel-wired-lan@lists.osuosl.org, David Rientjes , Miguel Ojeda , Jakub Kicinski , Paolo Abeni , linux-media@vger.kernel.org, Jacob Shin , Marco Elver , Johannes Berg , Josef Bacik , linaro-mm-sig@lists.linaro.org, Yonghong Song , David Sterba , Andrew Morton , Vlastimil Babka , Alex Elder , Greg Kroah-Hartman , Nick Desaulniers , linux-kernel@vger.kernel.org, Christian =?iso-8859-1?Q?K=F6nig?= , Pekka Enberg , Daniel Micay , netdev@vger.kernel.org, linux-fsdevel@vger.kernel.org, Joonsoo Kim , "David S. Miller" , linux-btrfs@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On Thu, Sep 22, 2022 at 07:18:51AM +0300, Kalle Valo wrote: > Kees Cook writes: > > > In preparation for reducing the use of ksize(), explicitly track the > > size of scan_cmd allocations. This also allows for noticing if the scan > > size changes unexpectedly. Note that using ksize() was already incorrect > > here, in the sense that ksize() would not match the actual allocation > > size, which would trigger future run-time allocation bounds checking. > > (In other words, memset() may know how large scan_cmd was allocated for, > > but ksize() will return the upper bounds of the actually allocated memory, > > causing a run-time warning about an overflow.) > > > > Cc: Gregory Greenman > > Cc: Kalle Valo > > Cc: Johannes Berg > > Cc: linux-wireless@vger.kernel.org > > Cc: netdev@vger.kernel.org > > Signed-off-by: Kees Cook > > Via which tree is this iwlwifi patch going? Normally via wireless-next > or something else? This doesn't depend on the kmalloc_size_roundup() helper at all, so I would be happy for it to go via wireless-next if the patch seems reasonable. -- Kees Cook