From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3C58BC5AD7B for ; Tue, 11 Aug 2026 06:02:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To: Content-Transfer-Encoding:Content-Type:MIME-Version:Message-Id:Date:Subject: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=5VtF2e06tpanp+udcTWrYBDeYnqMz5g5fGAiiALqjG0=; b=O4nQZEh+8r/7fo BCkmsBbw5bqPTsHqDiNsSF3yCK5R0vX80wH0/z8+QhhD9fmipMQ4oQf1l68VGXddji2Y6V2cwdt71 V8Utgd4ORkf2aj1pisDcPdVZg9pxKlrkjtgpG+oPcM5Zy9M3V6+vpXw5UwC1WSE7j1ZLpXLL6t0hB 0yzGA0fGCn776kWuP3V2NR7gMayQ6zbl09QZ39scdqKEkosO9cVmHWHxjHsU0oTLhJujYxds5arYu YYPU1/ELJnwaQ4dRlGWfrvb1mH3pUzggbSJzMk8j1J2ZKGAVWIx9U4TPK5xpKt5GFtfqLpcC9ZwyW ULyeMYsx+csjDe6mzSzw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wtfYw-0000000DMQJ-0AHK; Tue, 11 Aug 2026 06:02:10 +0000 Received: from mail-oo1-xc34.google.com ([2607:f8b0:4864:20::c34]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wtfYt-0000000DMP7-35D8 for linux-arm-kernel@lists.infradead.org; Tue, 11 Aug 2026 06:02:08 +0000 Received: by mail-oo1-xc34.google.com with SMTP id 006d021491bc7-6acbbcd3798so1629211eaf.3 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.infradead.org; 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=Xdtmuu2jNODbshtdolaEyj/PNjHkoKuYGcpiLtWkxmnSMWlAR8bEKNJjGAgkxHpZCr cPXiaSaaveXCcrNNZV63BenBHlqizQDOfXP7aL0MXxx5oT0pL0XeiDX0+HJhivaJ12l5 NjtN+iCYiGNK3aD0Zqoz6a68uf333Evpd0bgbYpTPTis/KA6Ctea4PsdZpnb4WhlJWCJ aQQKbvtwyRiP4H7V2Qp1r3DdXPYDQFzOb2gUhRE9rVQadHJqP8lrgB94bh65EfuLX/ca zBq+eQlbOnzigPj96y6Gp0qzuQZmX51fw52vk6vPg2bfvcrE+CX/TmBTaWpAujqQ9sCA 5O4g== 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=a4aQBwG0GIICkpkaojAilB3qvRm/J5Gst9rMsXhqTYE8jjOi5DKgtrZrtzzDnZoHsB 4xi1xrG58rUTwa2Ti0fRxljDCgf0aB6VuKW7g+gWpLyWwq/hApBSelzYX4szTlIqm8QE Xd6KYf91lTlrkRk7tRbyfHkHRK3shCT8mY7+JXAUF6oMvwenWqNNVvk/fCOg4k2c+omV vcSZ1IQaoGP5lHQbtN5EP/TAsJY6juYd/VyUUZFoAkIAKeFPc0dgbNKkZ89nBGZ65k9l yKxvcSiX+OnoHEBzRreRwyvbQfIOmQYOawqcZdq1VNZPf5lWlQyS++c3DodTWS/fF4ws RtKQ== X-Forwarded-Encrypted: i=1; AHgh+RokV7X4MqzWIZSrZMzAT5/r9EhO9V091EQHhKAVAFhL84xX9L/wuazETwHDZbvHhIoeNapEEw8QGVeHE1zlfKPi@lists.infradead.org X-Gm-Message-State: AOJu0Yzy1v8VFYdvyfdzCy42GCsKXesJg9GzSkPTRlRPDgsbZbFz+C32 yaV7N0RiHNIghyLa8xYAJs9REvpmb4vqtlnlila5xtCAq70UBb4rtcXs+WE/Cw== X-Gm-Gg: AR+sD12CA2AGQsoDJAWgDiqNBaLxiUQODBRDpJ6tJqAFrBhUK6/KMv9ygUZc5wt++h4 xs9dH36Vjp6V3HI8yGSv/4W9tRqFPIitHq0NdqdOEMYHT1nkcUSYObCGcHAFadn5J5h3gT2l6mh 1eC7KtWjTyP9rsPuGW/ISq9wZ2g5yiASJoC9Z8Bv6yJ7BfLETSn9uOFdC3gYVKTwjb8EZrTXC1h tGnlxo8QjCYjTQoEb/EQ3wFv4fWWr6ufQAIIwLMFAgDpjEyoF8ohpRo/n8cMbnQ+Yi06iRUk0da xhfi73ggvChzozc0ycsqvPvk4yxu6gsZhzatTlFGJqME1tGV6gGMR9xfHjCYmGbBCv4/EPlf8MK yd/vObSD9qCI8lC3BDAWYW21MdHLeMGrfOLXH7yN+FVzgu/vovNMI9Zg6foIbuV7FIO48F+mPRE 4bKoB2PUbVxko74H7fxlaeXSGUj7BX5Pmgl1vqv0QNMoZp6cZSRbFuX8I0AyEc4cuGAHWgIyoEn M9V1a6AxQgWut882tE4uVnpZf7uazJfNzA7kdxy5439vCjLZ1uOpuaGnIrCcHNsq/Uy/S2hy/I4 e4MU5faXImJPYRWaLhpm+k+vqRz/1B8+FXG1oXN5yNMqf9fbKeqLufBBvkzi24JIIrogipD0Wxo zJNrwtenGL7m6oP3n 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> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit 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-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260810_230207_785787_F3C67885 X-CRM114-Status: UNSURE ( 8.87 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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