From patchwork Fri Sep 22 17:28:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kees Cook X-Patchwork-Id: 13396158 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 4D68DCD4846 for ; Fri, 22 Sep 2023 17:37:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230484AbjIVRhX (ORCPT ); Fri, 22 Sep 2023 13:37:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45180 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229843AbjIVRhW (ORCPT ); Fri, 22 Sep 2023 13:37:22 -0400 Received: from mail-pl1-x634.google.com (mail-pl1-x634.google.com [IPv6:2607:f8b0:4864:20::634]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3027DCA for ; Fri, 22 Sep 2023 10:37:15 -0700 (PDT) Received: by mail-pl1-x634.google.com with SMTP id d9443c01a7336-1c47309a8ccso28365795ad.1 for ; Fri, 22 Sep 2023 10:37:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1695404234; x=1696009034; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=aHy2jcM546mf5Nw3NjJJcdsZQ6G2F/rbr9BMeebO220=; b=O5SzPZzR+6krEZXkmLIZZTVGxbfzwGuhhb08vBfcktRzZgV0OhjSFUeS0eNJO58Za8 5N2zT2pbwLPH6hOkI/uctlcBJBVMrN7HhBgSjMZpbt2EyzJWaVA97YWO/q//rd7zJGMe SwlHcfYj/6zlOKAkCMq3llOQu8AA/HYzpgc2E= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1695404234; x=1696009034; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=aHy2jcM546mf5Nw3NjJJcdsZQ6G2F/rbr9BMeebO220=; b=ATtZn5ShOQqwPF6BdMsae/11cSLG3R+75EzKqNosXa3ivIpUreOKJg5ZWOJ5Fh/OwG RBl68eGGhZlzrUcexrL7h/pHhvS4EGv+4GhPLlNF5/USGM9JIgOPRtQUohpNcApA8atu +h2RSfvWxdPUe7R7eTG0OiPlzVQxli3sYzAcZkjw/tOji2SysLpRQRlgDN8yHL62U9zK fqeZ37TwkslRJ0boKGlFNtYizy/HOAdeMZmzOOagL5zMicYbcJ5Xk8sFJT1kerH4Olfo 5BgvBRJf1l5PXCDGOBhfTjGpUV+n/KZoqGf8sWBZraNAoql+7VzetBSeentQyY/lPBBp DdZg== X-Gm-Message-State: AOJu0YximbVGbnkAQzuN7WUjfFgjOYxky5HQEluF6hJGeAqJ8lA1yIBQ kEFJvTu4ttmky3BjWJ5U3Q7sSg== X-Google-Smtp-Source: AGHT+IForaNfEngbgYzLn0XvlHSaSBMfd2+hDVPVDP0+7yMW2kQR3T0MzlrjAe6sTlVW6GLIrm0kZg== X-Received: by 2002:a17:902:dac1:b0:1c3:e4b8:701f with SMTP id q1-20020a170902dac100b001c3e4b8701fmr479521plx.19.1695404234658; Fri, 22 Sep 2023 10:37:14 -0700 (PDT) Received: from www.outflux.net (198-0-35-241-static.hfc.comcastbusiness.net. [198.0.35.241]) by smtp.gmail.com with ESMTPSA id g7-20020a1709029f8700b001b694140d96sm3771126plq.170.2023.09.22.10.37.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 Sep 2023 10:37:14 -0700 (PDT) From: Kees Cook To: Jakub Kicinski Cc: Kees Cook , Claudiu Manoil , Vladimir Oltean , "David S. Miller" , Eric Dumazet , Paolo Abeni , netdev@vger.kernel.org, Jamal Hadi Salim , David Ahern , Martin KaFai Lau , "Gustavo A. R. Silva" , Alexei Starovoitov , Yisen Zhuang , Salil Mehta , "K. Y. Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , Long Li , Ajay Sharma , Alex Elder , Pravin B Shelar , Shaokun Zhang , Cong Wang , Jiri Pirko , Nathan Chancellor , Nick Desaulniers , Tom Rix , Simon Horman , linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-rdma@vger.kernel.org, dev@openvswitch.org, linux-parisc@vger.kernel.org, llvm@lists.linux.dev, linux-hardening@vger.kernel.org Subject: [PATCH 11/14] net: enetc: Annotate struct enetc_psfp_gate with __counted_by Date: Fri, 22 Sep 2023 10:28:53 -0700 Message-Id: <20230922172858.3822653-11-keescook@chromium.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230922172449.work.906-kees@kernel.org> References: <20230922172449.work.906-kees@kernel.org> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1477; i=keescook@chromium.org; h=from:subject; bh=UT1ZdosG6thsQKbZuWlvvKtNoMV5v4P0vRQDHVv6AlQ=; b=owEBbQKS/ZANAwAKAYly9N/cbcAmAcsmYgBlDc7XSQgN5HFuzDmTQh0kuKGN8VvhxLvLNcFeh bt51QZ4mKKJAjMEAAEKAB0WIQSlw/aPIp3WD3I+bhOJcvTf3G3AJgUCZQ3O1wAKCRCJcvTf3G3A JqYjD/9GzxaHc4IrVjUkBj5/d8FeY4MZoAp8KPJKCM4E/stoQ89RWnkxPvXs2ub51LtTAM7Q8Nq 952ZRLOpGoccIMFSjcVlpFYlDEZRIMMkg06PGDQs8BLBgRp2Xbo/GI6r0attHGC5ruXY6R1djKy TJbXDQFFgVuUfCE3ZiMZG1SgrWkLCsxTlZFBeXY5+pEEWOp6EaAQULbpmh8/N9D4gZE1/vQgF0E 0nrtThbucWqOv2lWVWoESP8KBQ2hbiP04yjKp5QhnvG9ai5TJ7czKEGFFzfw+6WlMuj3ohAC+V8 eRoArmKj5/q8DXUTMOGzNsFBobqrSbgfMk+Fu+dvyK+gxTw1urL7a54Rms23bLytd1W3qsH4TdV MjqSkdW0hShdhKqJxvRMw9H0OSSv2T/191tK8eFarSmolgQCBqQkjQN3HORH8VsB7NK8Rls+AZZ ZNO99qTOvddCRUmOlsJli6YplJtOWudvU5OVaGivwWMqWzCqGnASdsSFHSQlyO0vGgy05UCTaTk OlgQNwhDSjtZX7ZovqyZY56wRJXHkVTd8P76Qi0s1d5yI9hxyzGrFnUmCrlF0P8oGHQIJh9h+HQ 9WKEJyCgyiKmb4+eBOVQnfxP063FQtmEVJl/nVl8B4+NKlYVWjZ0PUztJwDm4Ir6xg+DibLIp2O wM3jkIQFKhrIJvA== X-Developer-Key: i=keescook@chromium.org; a=openpgp; fpr=A5C3F68F229DD60F723E6E138972F4DFDC6DC026 Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org 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 enetc_psfp_gate. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Claudiu Manoil Cc: Vladimir Oltean Cc: "David S. Miller" Cc: Eric Dumazet Cc: Jakub Kicinski Cc: Paolo Abeni Cc: netdev@vger.kernel.org Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva --- drivers/net/ethernet/freescale/enetc/enetc_qos.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/freescale/enetc/enetc_qos.c b/drivers/net/ethernet/freescale/enetc/enetc_qos.c index 2513b44056c1..b65da49dd926 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc_qos.c +++ b/drivers/net/ethernet/freescale/enetc/enetc_qos.c @@ -443,7 +443,7 @@ struct enetc_psfp_gate { u32 num_entries; refcount_t refcount; struct hlist_node node; - struct action_gate_entry entries[]; + struct action_gate_entry entries[] __counted_by(num_entries); }; /* Only enable the green color frame now