From patchwork Tue Aug 11 06:01:58 2026 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Hilliard X-Patchwork-Id: 331 Return-Path: X-Original-To: noreply@patchwork.local Delivered-To: noreply@patchwork.local Received: from sea.lore.kernel.org (sea.lore.kernel.org [172.234.253.10]) by mxe881.netcup.net (Postfix) with ESMTPS id A9EA21C08CD for ; Tue, 11 Aug 2026 08:02:11 +0200 (CEST) Authentication-Results: mxe881; dkim=pass header.d=gmail.com; spf=pass (sender IP is 172.234.253.10) smtp.mailfrom=linux-sunxi+bounces-25105-noreply=patchwork.local@lists.linux.dev smtp.helo=sea.lore.kernel.org Received-SPF: pass (mxe881: domain of lists.linux.dev designates 172.234.253.10 as permitted sender) client-ip=172.234.253.10; envelope-from=linux-sunxi+bounces-25105-noreply=patchwork.local@lists.linux.dev; helo=sea.lore.kernel.org; Received: from smtp.subspace.kernel.org (conduit.subspace.kernel.org [100.90.174.1]) by sea.lore.kernel.org (Postfix) with ESMTP id 678683003EB5 for ; Tue, 11 Aug 2026 06:02:09 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 1AF2225DB0D; Tue, 11 Aug 2026 06:02:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="ZGwAAgAV" X-Original-To: linux-sunxi@lists.linux.dev Received: from mail-ot1-f46.google.com (mail-ot1-f46.google.com [209.85.210.46]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id ABB441F12FB for ; Tue, 11 Aug 2026 06:02:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.46 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786428129; cv=none; b=gCzsK0rjtP4U4KpUyQSNWBkOAKMJF7cVAsEeX435OFoxmcb8kgN3l6aTbBfhcv/iyzdo5WiyTkJa4LY17PNurW9DiPTB3XJDK74+suNa19PrhR3ytkgcFxUD6D19pmuZxej3tVUYCm1sF7kj7/stvKWZKZfQQ6AIcYfYE/Jybhw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786428129; c=relaxed/simple; bh=iRP0CAdUA07Tc6qOCkr9zEvKUmtM9XUzzhNmWcugr1I=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=fXyHS6KBiMB0ppMTYPIM4XE/qCSjvIm+vwbCozNbFMseCzEL5hNgHeGFSozHqSxNIBK+5Rf2BOQcwlo9ceexD514lncsYcME/gAurbVr1fJnmFmwWvSDcSqbNDWBh7+WTHC3y3672t8y45E413oxcoaSson8RtD+99USnrjYFCI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=ZGwAAgAV; arc=none smtp.client-ip=209.85.210.46 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-ot1-f46.google.com with SMTP id 46e09a7af769-7ee4399c423so1627160a34.0 for ; Mon, 10 Aug 2026 23:02:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1786428126; x=1787032926; darn=lists.linux.dev; h=cc:to:content-transfer-encoding:content-type:mime-version :message-id:date:subject:from:from:to:cc:subject:date:message-id :reply-to:content-type; bh=5VtF2e06tpanp+udcTWrYBDeYnqMz5g5fGAiiALqjG0=; b=ZGwAAgAVahZh8R/VvyDAyRq4/oNRUfwhEJyKi5Ebkzx92JRjmXRhbms7Bd1r5uhCYk BHylLkhXcl7H0fU1Xa74BxCzU2lWXOSezjyBSFeaI4ipOqJ84rP8mJZqRPVXwEsteN04 fHlt1SJhrtRbBMJitN5VmWFZiUe+bjf+QjW0MC0ub160CLsAvghvxfLeYdt/fOg8Xmnc GaJa4ZVrxgRtMc2+ShchCz+9rAIyY1mD8DkBBA1xFftv2aMeiIio2Y7NZc0MQsJ1gVW/ f5abR+b/10UCbwvHyKrRRc+Ra4Zu4QTPi+CSEL0RTaFS3SYvRmIqW9IFGJt3bHbloRKu Tq7w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786428126; x=1787032926; h=cc:to:content-transfer-encoding:content-type:mime-version :message-id:date:subject:from:x-gm-gg:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to:content-type; bh=5VtF2e06tpanp+udcTWrYBDeYnqMz5g5fGAiiALqjG0=; b=SiPfP0VoIbmwoVzYzMIVfpM+XwmLwleB1B9I0yYFIdn46VcrEVDKW2uXSLdSthyfIA crCyLjzVraVu1tVzEWG0HaUrRk39eFBCzoNamUETebTBqQt+Wp5d6bVrs/4MYXuWWmSm BsNryG3jEoBm+D3LlPIPvZgwzd1HCPSdbAAqArh8xoEpd2+v1a8hpL7gsh08U39+LZkq fUM3S/Gh1EB0ZQOIMHB+qRL9vgIuy4wEO/YumeowdRv7G1vjc8TLoS/HP2uPAnd7OtbT bUFFDkFX46tDp11LDL6YwAYO+ZTawCnwRN/lhnULSNV6L4iMQokTbrh73rTqmDxIQOhF 45eg== X-Forwarded-Encrypted: i=1; AHgh+Rr3EKzz/ldvVpFdMRB48Ts9dMRkHaYPj5B+dzxRAFE3TQ3rmze/EjkcW9cnWipvrTTACk9npt4z/qF2vg==@lists.linux.dev X-Gm-Message-State: AOJu0Yxnc+IEpde0+DMmzNNRjwhvT6Jf1SV8ACRcrFw4t1u6M7f42Oe+ KJoAdwuOn6yMw06zaOGV2t8pTZHhSlFQxeUehdpG256aobl4+7GhSw6+ X-Gm-Gg: AR+sD12t0w9EAZONqvJrxzTMC+PXCIxoqecPLWNywkNer3GVSXRTOqAIxiT2Y15p4T0 1sSwVMw+PPXR6eX8smyUa+q2AoGpHs5KnwRlY8e9ddiNW+aDqwQOfuVTILkauDOruEvaJwRlF/E hiCUMe5s11YS2H5oDLMtK3DDRlGIegvnf9nd+kVL96uWrCpIQph/2RZxF5tNy39AmQz+tb0Nh0f NG6SYSNvUOnfR2g6SQaj/fo6JyFVWgjAuZbD3APYRETMIWo0U+6X3/IO/2EGYHeHt6rhQ+YUGzI U0iE9kpa4Ka13ygGNQcaM9Gcg1oF6VWZhi36CULQrW97I6sJQvAZ7a+Z7glfTrU/DtLKn7Tvskc XSjUzEK8OjMAv1Lx0OOf2hN3vkxZprSJ5EAKBsJayfOT92rl4XYH/UwW0wpbqIHPqT0JBtBaLZ2 Oehk/fTcnKJ/xKnL9IoRdNy5J4T7XSELdzVzX9vENUPcqWWENZ+cjc0F+eyFz0Xgu+Q4UGuuwiA ywerEmnDOWtFQD1eUjdT7ajyQtlIvu5fkNyvJipTtgk+lbM8chSiDMOU6FrmylJWfEpRnsZRX9d QLF1XgfB7RyIsJ/28NoMa4XMTIv+kEN6htxRhkFx0OoXcMsWKVmbIILT2sdbc+gBPRuw3yiGc1J zVuM1N8pJxu5j4ov8 X-Received: by 2002:a05:6820:f026:b0:6aa:c3f3:fbb0 with SMTP id 006d021491bc7-6b0a31e9e09mr310661eaf.32.1786428126556; Mon, 10 Aug 2026 23:02:06 -0700 (PDT) Received: from [127.0.1.1] (184-96-154-59.hlrn.qwest.net. [184.96.154.59]) by smtp.gmail.com with ESMTPSA id 006d021491bc7-6b09fa1ef9esm676004eaf.0.2026.08.10.23.02.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 10 Aug 2026 23:02:04 -0700 (PDT) From: James Hilliard Subject: [PATCH 0/3] mtd: rawnand: sunxi: harden protected OOB handling Date: Tue, 11 Aug 2026 00:01:58 -0600 Message-Id: <20260811-sunxi-nand-protected-oob-fixes-v1-0-412e50444673@gmail.com> Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIAAAAAAAC/yXMQQqDMBCF4avIrDuQ2FaCVyldJGaq42IiGS2Ce PdO2+XP430HKFUmhb45oNKblYtY+EsDwxRlJORsDa1rOxe8Q91kZ5QoGZdaVhpWylhKwhfvpOj vOd2uXYghEhiyVPoNZjye/9YtzXb7qnCeH/SS012CAAAA X-Change-ID: 20260810-sunxi-nand-protected-oob-fixes-15db4368a8ae To: Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Richard Genoud Cc: linux-mtd@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, James Hilliard X-Mailer: b4 0.15.2 X-MORS-Enabled: yes X-MORS-DOMAIN: patchwork.local X-MORS-HOSTING: hosting172546 X-MORS-USER: hosting172546 X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= The H6/H616 variable protected-OOB implementation has three related failure cases around its per-step user-data lengths. First, propagate failures while allocating the per-step length array. Then reserve an encodable four-byte first section for the bad block marker and reject layouts which cannot provide it. Finally, replace the per-write heap allocation used for BBM compensation with the controller's bounded 32-byte stack buffer. These fixes keep the calculated, advertised and programmed OOB layouts consistent and prevent zero-sized sections from reaching the BBM path. Assisted-by: OpenAI Codex (gpt-5.6-sol, max) Signed-off-by: James Hilliard --- James Hilliard (3): mtd: rawnand: sunxi: propagate user-data allocation errors mtd: rawnand: sunxi: reserve a full user-data word for BBM mtd: rawnand: sunxi: use a stack buffer for BBM randomization drivers/mtd/nand/raw/sunxi_nand.c | 32 +++++++++++++++++++++----------- 1 file changed, 21 insertions(+), 11 deletions(-) --- base-commit: 15a3cbce32994141252bb4ecfe3ff3a5d22d0b4f change-id: 20260810-sunxi-nand-protected-oob-fixes-15db4368a8ae Best regards, -- James Hilliard