From patchwork Thu Feb 24 21:15:31 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Gustavo A. R. Silva" X-Patchwork-Id: 545862 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 73EE5C4332F for ; Thu, 24 Feb 2022 21:07:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234526AbiBXVIF (ORCPT ); Thu, 24 Feb 2022 16:08:05 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59930 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229542AbiBXVIE (ORCPT ); Thu, 24 Feb 2022 16:08:04 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5B09816A593; Thu, 24 Feb 2022 13:07:34 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E97926196B; Thu, 24 Feb 2022 21:07:33 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 79CFCC340E9; Thu, 24 Feb 2022 21:07:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1645736853; bh=uYXf9/DJ39VQh6FgBg7fGGJcFRbwfo7L2EqOdk0O4Qs=; h=Date:From:To:Cc:Subject:From; b=QWDnDGKsG11aZVRYwfScOuwOwZPRkWArnNKJQdR3/aOnIy34rAeAs1HKxx161wPl+ Rm3OezleKwCckU9OTwa3KJfHim7hSZ6/VLKRmn6Hw3bc8fKRh50zHYpEAWM84JACUG uEb14VbGFLb/RDwGq3/8ee7iOZ149Ddg7oNIvsmG/q935Md0pSjJeVMV3qBm1nggJR 4frVuf55GZOzX2CFbUKo8FLqCF3Kajaj6Wd285dsnA4LEo5RZc+7izGXCNC+fFUOfl I6LtHxEgAFZtQGm9zXbb8e0ZpPTmojr1m1G3P5mAQpI5SDfMqBnIW+kAK9gQWTp2JQ GXGBrexLCCEJQ== Date: Thu, 24 Feb 2022 15:15:31 -0600 From: "Gustavo A. R. Silva" To: linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, Jeff Johnson Cc: Kalle Valo , "David S. Miller" , Jakub Kicinski , netdev@vger.kernel.org, linux-hardening@vger.kernel.org, "Gustavo A. R. Silva" Subject: [PATCH v2 0/6][next] ath6kl: wmi: Replace one-element arrays with flexible-array members Message-ID: MIME-Version: 1.0 Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org This series aims to replace one-element arrays with flexible-array members in multiple structures in drivers/net/wireless/ath/ath6kl/wmi.h There is a regular need in the kernel to provide a way to declare having a dynamically sized set of trailing elements in a structure. Kernel code should always use “flexible array members”[1] for these cases. The older style of one-element or zero-length arrays should no longer be used[2]. 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(). These issues were found with the help of Coccinelle and audited and fixed, manually. [1] https://en.wikipedia.org/wiki/Flexible_array_member [2] https://www.kernel.org/doc/html/v5.16/process/deprecated.html#zero-length-and-one-element-arrays Link: https://github.com/KSPP/linux/issues/79 Changes in v2: - Revert changes in if-statement logic for all the affected patches: if (len < sizeof(struct foo)) Link: https://lore.kernel.org/linux-hardening/3abb0846-a26f-3d76-8936-cd23cf4387f1@quicinc.com/ - Update changelog texts. - Add Reviewed-by: Jeff Johnson tag. Gustavo A. R. Silva (6): ath6kl: wmi: Replace one-element array with flexible-array member in struct wmi_begin_scan_cmd ath6kl: wmi: Replace one-element array with flexible-array member in struct wmi_start_scan_cmd ath6kl: wmi: Replace one-element array with flexible-array member in struct wmi_channel_list_reply ath6kl: wmi: Replace one-element array with flexible-array member in struct wmi_connect_event ath6kl: wmi: Replace one-element array with flexible-array member in struct wmi_disconnect_event ath6kl: wmi: Replace one-element array with flexible-array member in struct wmi_aplist_event drivers/net/wireless/ath/ath6kl/wmi.c | 22 ++++------------------ drivers/net/wireless/ath/ath6kl/wmi.h | 12 ++++++------ 2 files changed, 10 insertions(+), 24 deletions(-)