From patchwork Thu Aug 5 04:18:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Gustavo A. R. Silva" X-Patchwork-Id: 12420263 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-21.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CAE30C4320A for ; Thu, 5 Aug 2021 04:16:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ABCFE61078 for ; Thu, 5 Aug 2021 04:16:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236099AbhHEEQb (ORCPT ); Thu, 5 Aug 2021 00:16:31 -0400 Received: from mail.kernel.org ([198.145.29.99]:57502 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230215AbhHEEQa (ORCPT ); Thu, 5 Aug 2021 00:16:30 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id AD94E60F58; Thu, 5 Aug 2021 04:16:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1628136977; bh=GYTjY+KFDYtNGY3RO8J3n+kq9mUnaStEDB2XfegLVEM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=somduTLxShxmAvjd1+6s3qrOvnopdi13zb7wLzTjGIMKGuKQRo72sD4oj5TqqLhuw H7Cdm5zlZBFI2+W5bCqiy1BOYYObOVnGD37Ix8OvdYopWbY5K5sa0xAVeQXh386t0c /BOQYyGtUxLCN1W8VzoqZTvzx8ByRvPhvX34gXTX0r4qR84UG0ZThsGMKcW1NBLrA+ cnOQE0QP1BosV2Qs0dt/Nb6jt5OG0iQHpxZu0XQiK+vS20d7+ahl1NARUB3NiwTNoB LUIdS4TzRoTqaIo4o7VzquFrECLs+1RiDNA1REemCabQRc3IJ8xOq1ik/SWHFboXbk Q4yP3E042Fqwg== Date: Wed, 4 Aug 2021 23:18:58 -0500 From: "Gustavo A. R. Silva" To: linux-kernel@vger.kernel.org Cc: Kashyap Desai , Sumit Saxena , Shivasharan S , "James E.J. Bottomley" , "Martin K. Petersen" , megaraidlinux.pdl@broadcom.com, linux-scsi@vger.kernel.org, linux-hardening@vger.kernel.org, "Gustavo A. R. Silva" Subject: [PATCH v2 2/4][next] scsi: megaraid_sas: Replace one-element array with flexible-array member in MR_FW_RAID_MAP_DYNAMIC Message-ID: <894f0df7940def9afe2bcd3b8a982404a45bcba9.1628136510.git.gustavoars@kernel.org> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Replace one-element array with a flexible-array member in struct MR_FW_RAID_MAP_DYNAMIC. This helps with the ongoing efforts to globally enable -Warray-bounds and get us closer to being able to tighten the FORTIFY_SOURCE routines on memcpy(). Link: https://en.wikipedia.org/wiki/Flexible_array_member Link: https://www.kernel.org/doc/html/v5.10/process/deprecated.html#zero-length-and-one-element-arrays Link: https://github.com/KSPP/linux/issues/79 Link: https://github.com/KSPP/linux/issues/109 Signed-off-by: Gustavo A. R. Silva --- Changes in v2: - None. drivers/scsi/megaraid/megaraid_sas_fusion.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h index a47139ef9ee2..9adb8b30f422 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.h +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h @@ -1053,7 +1053,7 @@ struct MR_FW_RAID_MAP_DYNAMIC { struct MR_RAID_MAP_DESC_TABLE raid_map_desc_table[RAID_MAP_DESC_TYPE_COUNT]; /* Variable Size buffer containing all data */ - u32 raid_map_desc_data[1]; + u32 raid_map_desc_data[]; }; /* Dynamicaly sized RAID MAp structure */ #define IEEE_SGE_FLAGS_ADDR_MASK (0x03)