From patchwork Wed Nov 15 19:36:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Saeed Mahameed X-Patchwork-Id: 13457251 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 DBBD8C5AE4B for ; Wed, 15 Nov 2023 19:36:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234562AbjKOThA (ORCPT ); Wed, 15 Nov 2023 14:37:00 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35912 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234558AbjKOTg7 (ORCPT ); Wed, 15 Nov 2023 14:36:59 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 96C9212C for ; Wed, 15 Nov 2023 11:36:56 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 62EA6C433C8; Wed, 15 Nov 2023 19:36:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1700077016; bh=zvXd7pFUQNTRC+R6e2nxdu7t0YyF3Z07Sc/sSGBOShU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mX30fVlc3C4dN0Y/jJFy+nD58Bk8W4+/hxJBTznlD22kYrEuCt+AKXsT1qB7iMJSM zmR637pc5PhI3xYKEsUR/qwIggKssuZfuQE9TtjyDShIHNGvgrKjgt0AO/AT2Xi3Vy kua2dxk7wHwOVpqIVfpDODpihmOA3HrxSBaBaZBt4nT6BwAGIsJLaEPfKq+Q6GEam0 /iOAf1HaYvtzRenyVPS8i/L/acpETJZl3i/CRnnFbiIhgf8rWRlHeD144o5HKcu/Ek Ai08LM2uchBA1IQ34Zr+zdCLsPK1ATbppsgxHo30LzmrJToG8lw6WNqazX0PHbtxiP caIWYf8zKfjzw== From: Saeed Mahameed To: "David S. Miller" , Jakub Kicinski , Paolo Abeni , Eric Dumazet Cc: Saeed Mahameed , netdev@vger.kernel.org, Tariq Toukan , Kees Cook , Leon Romanovsky , linux-rdma@vger.kernel.org, Justin Stitt , "Gustavo A . R . Silva" , Leon Romanovsky Subject: [net-next V2 05/13] net/mlx5: Annotate struct mlx5_flow_handle with __counted_by Date: Wed, 15 Nov 2023 11:36:41 -0800 Message-ID: <20231115193649.8756-6-saeed@kernel.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231115193649.8756-1-saeed@kernel.org> References: <20231115193649.8756-1-saeed@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org From: Kees Cook 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 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 mlx5_flow_handle. Cc: Saeed Mahameed Cc: Leon Romanovsky Cc: "David S. Miller" Cc: Eric Dumazet Cc: Jakub Kicinski Cc: Paolo Abeni Cc: netdev@vger.kernel.org Cc: linux-rdma@vger.kernel.org Link: https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci [1] Signed-off-by: Kees Cook Reviewed-by: Justin Stitt Reviewed-by: Gustavo A. R. Silva Reviewed-by: Leon Romanovsky Signed-off-by: Saeed Mahameed --- drivers/net/ethernet/mellanox/mlx5/core/fs_core.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.h b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.h index 4aed1768b85f..78eb6b7097e1 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.h @@ -181,7 +181,7 @@ struct mlx5_flow_rule { struct mlx5_flow_handle { int num_rules; - struct mlx5_flow_rule *rule[]; + struct mlx5_flow_rule *rule[] __counted_by(num_rules); }; /* Type of children is mlx5_flow_group */