From patchwork Fri Sep 22 17:52:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kees Cook X-Patchwork-Id: 143571 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:612c:172:b0:3f2:4152:657d with SMTP id h50csp5777089vqi; Fri, 22 Sep 2023 11:11:04 -0700 (PDT) X-Google-Smtp-Source: AGHT+IEGWqWBdKGe02JY7oTF7oGxzRNOqV3x50JSVd31miETB+dV59ghD2nJMhJSrx+3L3q5/Bn4 X-Received: by 2002:a05:6a00:1a14:b0:68f:f38d:f76c with SMTP id g20-20020a056a001a1400b0068ff38df76cmr217407pfv.6.1695406264153; Fri, 22 Sep 2023 11:11:04 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1695406264; cv=none; d=google.com; s=arc-20160816; b=d6NcYyEzf7d75EuieWu+iWzMM4AHx48UgRHWhG8ZhbpuU0QNmEJBPa8yFfVG6VKPTw dD/rkEEARXSFCRNIdVHqrnIao5C9DpQXopy5dPVF06AV8WIUUXViLgoO3mm2FeIj6jfF 61jbNqtlRAE7SHXv/LHEuaFrqrLGRXQDSOpEbQH+Qqt/XxCDh3jvRa/dFIGIe0l0S6Cv cgZrxUZzTINL/HkLJrdFDFrxPx0xRZCtsBqJANtdHqTXe3TyuWODbBcJVbQ5Ho4TzVQV pIHr12zVnT1fA/KQP+hOToUmd1jukhqxn3Fg18IjLjtao5Ewzi1VJnevoJimjhfxfbJT RuiA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :message-id:date:subject:cc:to:from:dkim-signature; bh=GQ6jwPkyyUPUihDFvg8XivaDrAIcNkn4eIr05k1aNqo=; fh=W+tUKjmbqyGiab4LtXiYno5RPILXHh98S8YlpAJb7qI=; b=ZujzOUpMpYHGU89mvPJ+xlJ8QQM/4GhUs+coRAtqTfrHc3+eLCyIrmi/yVVYBoJtEE bIeVMwg7/aaS8PvDJH5RSFa+MjmJ6J6bbFDm/Hy9ALA4fvD2EFfVN6rJelLI+Dhnt0SG 8RNtv8HYTOo1KVmJP8XrC0STpKmXkaBLyQep3ywbDjGjoGa1R3HJaciO1jx7FaIAZAhc PCZNetLk2eEHUiC+u2ll9tgjyXd3RN72g9UHgn/gdn1DG83xelesYxgslg9TsVKy4cfM GMIQ74uGYrGyEFJdIP6SjVirnKWjnb0CEH1EOnt2rDSS/QqdCGWgqH/LU9PpPf0oSH31 NZvQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@chromium.org header.s=google header.b=HHQQWH3P; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.34 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=chromium.org Received: from howler.vger.email (howler.vger.email. [23.128.96.34]) by mx.google.com with ESMTPS id h190-20020a6383c7000000b00578a28df3dasi3944082pge.524.2023.09.22.11.11.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 Sep 2023 11:11:04 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.34 as permitted sender) client-ip=23.128.96.34; Authentication-Results: mx.google.com; dkim=pass header.i=@chromium.org header.s=google header.b=HHQQWH3P; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.34 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=chromium.org Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by howler.vger.email (Postfix) with ESMTP id 56C528567E5B; Fri, 22 Sep 2023 10:55:01 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at howler.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233557AbjIVRy7 (ORCPT + 28 others); Fri, 22 Sep 2023 13:54:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48300 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233753AbjIVRyZ (ORCPT ); Fri, 22 Sep 2023 13:54:25 -0400 Received: from mail-pl1-x62b.google.com (mail-pl1-x62b.google.com [IPv6:2607:f8b0:4864:20::62b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0B5111BC7 for ; Fri, 22 Sep 2023 10:52:48 -0700 (PDT) Received: by mail-pl1-x62b.google.com with SMTP id d9443c01a7336-1c1e3a4a06fso20952575ad.3 for ; Fri, 22 Sep 2023 10:52:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1695405167; x=1696009967; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=GQ6jwPkyyUPUihDFvg8XivaDrAIcNkn4eIr05k1aNqo=; b=HHQQWH3P1Tg3hUpLX6jbe5d/oOItnMfupL9C2YUKqirNRxZ1NhkjtYhO/YMWunS1X/ na3ThauRHbv1iYFYmDXaG56tOreKU0dtTNn1Jix0qxJnYlc4EtlJq7Y8MAY6L2rEEQL9 L3PNjU/6b8GJYmpurZqLyV9SyBUhw8o0mWwlI= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1695405167; x=1696009967; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=GQ6jwPkyyUPUihDFvg8XivaDrAIcNkn4eIr05k1aNqo=; b=Xy28qnxbSuUcrnCPsr7oiMafUQ9kmUEcjr6LBk98x/VjW75Noa8Jh1lF3RBlhUcF9M lp9C/dKZTuSrcbzFa0mqey5JWEzlI4XUiTxDDZGcJrqQBWFF3qleJ4mkZRQT7HJ9y7Wm vuP9ZocEhFvymS53gxmCeDOyRkhFQBIwhI5XOYXUks1QOCsw13shtQvzzJnKf65KEe8q DFWfFWx4xLj4zG2B95hxBimkH1Vl6uKhjbLXCMXk8Dll973KLXaSCaRCkLYe+5hJp364 EiNe1xgBI1CXG9GXW2hQm4w/85+kmeoYQv+gjZtJTwy0hfUhURKxyh15iImD7DfCZBFb k9Vw== X-Gm-Message-State: AOJu0YwytXQtFZoAgy88w3IMBROzeHZGWUie7cseRYQ3b93sXb4uXUZa Lt775ZZYzWaUERwqE8H9IoTHxg== X-Received: by 2002:a17:903:2281:b0:1c3:bc2a:f6b4 with SMTP id b1-20020a170903228100b001c3bc2af6b4mr225525plh.42.1695405167472; Fri, 22 Sep 2023 10:52:47 -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 iw11-20020a170903044b00b001c582de968dsm3780689plb.72.2023.09.22.10.52.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 Sep 2023 10:52:46 -0700 (PDT) From: Kees Cook To: Jiri Slaby Cc: Kees Cook , Greg Kroah-Hartman , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , linux-serial@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Nathan Chancellor , Nick Desaulniers , Tom Rix , linux-kernel@vger.kernel.org, llvm@lists.linux.dev, linux-hardening@vger.kernel.org Subject: [PATCH] mxser: Annotate struct mxser_board with __counted_by Date: Fri, 22 Sep 2023 10:52:45 -0700 Message-Id: <20230922175245.work.196-kees@kernel.org> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1400; i=keescook@chromium.org; h=from:subject:message-id; bh=EF4J3adktVfobyY2g9VoH112mQT3HIJCM8AoszQv0eY=; b=owEBbQKS/ZANAwAKAYly9N/cbcAmAcsmYgBlDdRtJNIux5LoCOcVzIv6wUz7ihnbHZEwbcqTg pn+/5MuR9mJAjMEAAEKAB0WIQSlw/aPIp3WD3I+bhOJcvTf3G3AJgUCZQ3UbQAKCRCJcvTf3G3A JonqD/sGsiP5krTXtLdtu/hVDGnXK5tfys6LaoqTOjcqrYNSjPh/NIuv/rqHb+YzfzFOJIQRSZ0 HZAnHwpvjK7E2pSIcUYN0JqqA4DzASGV/MHa6BwsIMeTdsKJuFRECHikDcLVx+bs34ca1C8mVVE kGTNZuXBQ5aaYQm2sfBxZeBkBCUeVOOIeoNJMpJe65rhDFGCsiyMfu6y+sLoMI3sx3R03MkpxfG ++mCJQEsSjZl+mWB2yZq5aIKwat6HBhE1RQcHfOStLO6M+/0+Q3J89z2MCgj5ds4ZfO3wdXARz5 kd0TniAInQZRMzjvnFE22IJQk98TOdrKyQtGcKcorlVdFL/Dq+5KbSvICHOCy5L7jgZ/ZPML2B6 ByKmLs7DzdruyUsPiTvLRK+N0dPZ2QKEYUD/f7HO0gxKU+Uk8ItuJSliYo2ELn5I0D0IrtyiUpS /3ie1n/5nWYxVLyqLUYX303LNZSlfOUfn7CMZ0JhOpwZGk1SSpnJnve5oUmjbecse5GZydC8wPG 5x3YoHeS4t9E6EP3AGmNMq5o2OdQlTdVHNnAHbH6G/9QnTwPvxrnhrKf2wnHO0mHnPsLJB5Wyoh qHR9Y99dUyU8+LW0meomOlfg6B6zRuWDbWedOl0gYjzaAI9s6SG9AhW3ZrAHIegVz3nFw/0wv/j GwhUkPI DqtPoZzQ== X-Developer-Key: i=keescook@chromium.org; a=openpgp; fpr=A5C3F68F229DD60F723E6E138972F4DFDC6DC026 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (howler.vger.email [0.0.0.0]); Fri, 22 Sep 2023 10:55:01 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1777762318511316732 X-GMAIL-MSGID: 1777762318511316732 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 mxser_board. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Jiri Slaby Cc: Greg Kroah-Hartman Cc: Shawn Guo Cc: Sascha Hauer Cc: Pengutronix Kernel Team Cc: Fabio Estevam Cc: NXP Linux Team Cc: linux-serial@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva Reviewed-by: Jiri Slaby --- drivers/tty/mxser.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c index 10aa4ed38793..6ce7f259968f 100644 --- a/drivers/tty/mxser.c +++ b/drivers/tty/mxser.c @@ -288,7 +288,7 @@ struct mxser_board { enum mxser_must_hwid must_hwid; speed_t max_baud; - struct mxser_port ports[]; + struct mxser_port ports[] __counted_by(nports); }; static DECLARE_BITMAP(mxser_boards, MXSER_BOARDS);