From patchwork Thu Jul 11 17:28:16 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kees Cook X-Patchwork-Id: 812254 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 684DB16DC17; Thu, 11 Jul 2024 17:28:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720718902; cv=none; b=K15YL9Oe5OS+NX0oqRgBU5LHTj3t98imi27vk1oVPolhEFpGUP8K8DGgwje3qab/R65cn5PDZ7cYsu0IidY/w9agv+qo/Latjte779eyIhbX+eOH9JuQkBSfKKCPnAyu2xxd3mcudfQu5tPnLIalaOg+lsJ04s185NtE6zf4hRA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720718902; c=relaxed/simple; bh=tlFNtdPXIsjyicZF+y3g8YyRlX+dG+Y/x87VFaz+p5w=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=T4cE6uWe5X8TgfrI9My929mOogXpI6EjLUL1CGHeU9UA4hm2rVvRawq7ISguWYLr2N+/mNVPozPetw7qy3U1Dvo6sJsr6e/MZZmygeq3AuyWD7EN/7zHg6nX0T0X7qqngSnCAspG298Pyz1/K5DVYv58NkfAA6NRag62g4bomYc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=kW0d/7d5; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="kW0d/7d5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 16062C4AF07; Thu, 11 Jul 2024 17:28:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1720718902; bh=tlFNtdPXIsjyicZF+y3g8YyRlX+dG+Y/x87VFaz+p5w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kW0d/7d5Alt7O+762Ma05vwt7bgo9oDQJ6QTTq8Qo8BKakNtMkX1fn1Nop+s9R9F5 UByrDK+FEb1qFagvYD/xuP1mJUsv2zdDyZu/3BmoEUEMNP4zuHWprJP/uZyiL34Kbj mdb2KwuchxnHdqnx9BSF4olEPu6dpmh36KgHfu/mGm6u9cVUdYKQAt2pxzsAcmIKc5 F/J50PJBJxFyJ4t2kju2csbyfO+pqaWOmBriKHILUt6XcqqHQwJYJTw/eBVg+mV1TM eye10XbHwTebPYxOxXT4INhYMRmAGB/hwaiQpff4aqms6LuapihEIA8jNdJCv/+Pk/ fRojRIZ/NKxXQ== From: Kees Cook To: Sathya Prakash Cc: Kees Cook , Sreekanth Reddy , Suganath Prabu Subramani , "Gustavo A. R. Silva" , MPT-FusionLinux.pdl@broadcom.com, linux-scsi@vger.kernel.org, linux-hardening@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/6] scsi: message: fusion: struct _CONFIG_PAGE_SAS_IO_UNIT_0: Replace 1-element array with flexible array Date: Thu, 11 Jul 2024 10:28:16 -0700 Message-Id: <20240711172821.123936-2-kees@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240711172432.work.523-kees@kernel.org> References: <20240711172432.work.523-kees@kernel.org> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2852; i=kees@kernel.org; h=from:subject; bh=tlFNtdPXIsjyicZF+y3g8YyRlX+dG+Y/x87VFaz+p5w=; b=owEBbQKS/ZANAwAKAYly9N/cbcAmAcsmYgBmkBYzm99u/pI8tnb58UexRVIlgpTl/2by8ge3B JVT1Tp83WaJAjMEAAEKAB0WIQSlw/aPIp3WD3I+bhOJcvTf3G3AJgUCZpAWMwAKCRCJcvTf3G3A JndXEAClVG8hZ1gvChJQI1q05OsMAnd5K6vjz1iD0F1YVbxf1Io/lmnMbvyQkBaGIbUUyD5HX0C nswXfB9Tn4RouUs1NfnAZbgEC010eVqzKW3ploKcZ4ocLCLLR2T31lssRQH/pXT7uFEgx9k5HUP 8QzvJ5gbkmzLB0/QYNSrJC2yYaOXqdC3jsoc/O4vQaTX6OmF3AO4e1u4ge1c5AaS6bmD4m259b2 3M6nzZRF8lLRwJ28YZtLNG9vDEYmql1fI793PCklXIgVd6BRzx73/6QyDKAhSAbHPDxiM66LyqD S3iQOdU3PLKKrX9zSs+Bgsa2lRVlS8BzPWnzcL9s0lE2/BcfKn6Opx+I60wDUO1lou4drEOhHyh pSoKFYXZCfb+/4s39zakPEWR3UxCLafSHrQUB9kj4Wt5MvK0jhFgmZBPf9gOKpzI7kJuG8XCw9P EJjR7Iv4UYsKoXpLOLF9sOtkLVbPeqDzwGl+Sp3EcLYzijksTvw/lxK2qv10kNHUW2tGGnfiRNW EcV20TAb8rw5dUvwiqg3tIQFsT+LxOB2O6isQAhj2yWMlP6mdD8R+0vn6r26JQEX5+BptDHUJNi bR85cDX96CrdOONyK/FY02wJM5y56X3CW4YiIm5PGFRnYLilfKIedWmqsIBItAZR/NFRPMDLf09 K+WvqVTsAa4tEGg== X-Developer-Key: i=kees@kernel.org; a=openpgp; fpr=A5C3F68F229DD60F723E6E138972F4DFDC6DC026 Replace the deprecated[1] use of a 1-element array in struct _CONFIG_PAGE_SAS_IO_UNIT_0 with a modern flexible array. Additionally add __counted_by annotation since PhyData is only ever accessed via a loops bounded by NumPhys: lsi/mpi_cnfg.h: MPI_SAS_IO_UNIT0_PHY_DATA PhyData[] __counted_by(NumPhys); /* 10h */ mptsas.c: port_info->num_phys = buffer->NumPhys; mptsas.c: for (i = 0; i < port_info->num_phys; i++) { mptsas.c: mptsas_print_phy_data(ioc, &buffer->PhyData[i]); mptsas.c: port_info->phy_info[i].phy_id = i; mptsas.c: port_info->phy_info[i].port_id = mptsas.c: buffer->PhyData[i].Port; mptsas.c: port_info->phy_info[i].negotiated_link_rate = mptsas.c: buffer->PhyData[i].NegotiatedLinkRate; No binary differences are present after this conversion. Link: https://github.com/KSPP/linux/issues/79 [1] Signed-off-by: Kees Cook --- Cc: Sathya Prakash Cc: Sreekanth Reddy Cc: Suganath Prabu Subramani Cc: "Gustavo A. R. Silva" Cc: MPT-FusionLinux.pdl@broadcom.com Cc: linux-scsi@vger.kernel.org Cc: linux-hardening@vger.kernel.org --- drivers/message/fusion/lsi/mpi_cnfg.h | 10 +--------- 1 file changed, 1 insertion(+), 9 deletions(-) diff --git a/drivers/message/fusion/lsi/mpi_cnfg.h b/drivers/message/fusion/lsi/mpi_cnfg.h index f59a741ef21c..c7997e32e82e 100644 --- a/drivers/message/fusion/lsi/mpi_cnfg.h +++ b/drivers/message/fusion/lsi/mpi_cnfg.h @@ -2547,14 +2547,6 @@ typedef struct _MPI_SAS_IO_UNIT0_PHY_DATA } MPI_SAS_IO_UNIT0_PHY_DATA, MPI_POINTER PTR_MPI_SAS_IO_UNIT0_PHY_DATA, SasIOUnit0PhyData, MPI_POINTER pSasIOUnit0PhyData; -/* - * Host code (drivers, BIOS, utilities, etc.) should leave this define set to - * one and check Header.PageLength at runtime. - */ -#ifndef MPI_SAS_IOUNIT0_PHY_MAX -#define MPI_SAS_IOUNIT0_PHY_MAX (1) -#endif - typedef struct _CONFIG_PAGE_SAS_IO_UNIT_0 { CONFIG_EXTENDED_PAGE_HEADER Header; /* 00h */ @@ -2563,7 +2555,7 @@ typedef struct _CONFIG_PAGE_SAS_IO_UNIT_0 U8 NumPhys; /* 0Ch */ U8 Reserved2; /* 0Dh */ U16 Reserved3; /* 0Eh */ - MPI_SAS_IO_UNIT0_PHY_DATA PhyData[MPI_SAS_IOUNIT0_PHY_MAX]; /* 10h */ + MPI_SAS_IO_UNIT0_PHY_DATA PhyData[] __counted_by(NumPhys); /* 10h */ } CONFIG_PAGE_SAS_IO_UNIT_0, MPI_POINTER PTR_CONFIG_PAGE_SAS_IO_UNIT_0, SasIOUnitPage0_t, MPI_POINTER pSasIOUnitPage0_t;