From patchwork Sat Mar 2 14:03:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: skseofh@gmail.com X-Patchwork-Id: 209223 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7301:fa17:b0:10a:f01:a869 with SMTP id ju23csp490726dyc; Sat, 2 Mar 2024 06:04:06 -0800 (PST) X-Forwarded-Encrypted: i=3; AJvYcCWe6ntx+wf2jEsSLMoqOpgYMhJUz5VmY1bpjDnGb+vRx10lzVZOflJurV8bcwzFUkuR6tAoxxQtvmf2LC3OwNzKxBdpTA== X-Google-Smtp-Source: AGHT+IFy06NUH3V6xiQ4rWFFgjETjFnHc/XYnwFKl9/KmcoV3xy0MnsILgSNzkZGJePPmT8SSaTg X-Received: by 2002:a17:906:a88:b0:a44:5a3d:7883 with SMTP id y8-20020a1709060a8800b00a445a3d7883mr3279464ejf.10.1709388246624; Sat, 02 Mar 2024 06:04:06 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1709388246; cv=pass; d=google.com; s=arc-20160816; b=iYt4HLupk9AmII+JSgxsiU3Sr8anLRCg9+t0Em4knGo3+Hjf6cyXs/niBLlZ92jsWZ rjgYjEYGrIe2/Kga2oxiFIB5RDHwNH52Q7LemSbvWdnpCv2b4oY5mRTaZBEeuzYbE8ma LgN/dkCfarl1XcvJeG0g0DEYpvIu2JE5aN9WJesNXx6vyaTi/DBqKPR8Bo4AvXtog4Hf nL6dGgqE41zHUIrH+FTSTwfgCpEjQSQkih4MjKujwh4iU3sYr+bxbcq9kjbNc3kOWk5I zspUXyqBFoLPDv069jHN4mq58DhB+UWuU7gu0XYYsxi4VyUbNqcPsZD7MCIirvK2+U7J 3hbg== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:list-unsubscribe :list-subscribe:list-id:precedence:message-id:date:subject:cc:to :from:dkim-signature; bh=oGPt7WWJ/meTyXMsy8NiR7qClff89VB73LNZFS09DAM=; fh=IDPmFJAEXLjb6P75YQbvGqutEACh1fuE0XGg/4dVt2g=; b=yG5/IfV2zXbCdS0arOLME7TmXbUvu2OBUFRGm9KSmkDyoKBsy1u0yAVBOLObH/WWnS MBtHZbmfARp+j0G3wq/BYWEjjuK04eTE1RreFlr6gw6gAcSZcyqTVg9VzSkLU3CGknwq aL4yxV6LW+9DY9USauv5+yVeWnue0qhJdi1Lpt6n5TCiFBz0k9wwO8/46fyJxb3p1X2Q PXeCa8laVkYT/H/XzWsHQXw1QL9c27/AsM4gJuLXWStg2izOaX+tGgqcYu1rT3Epx+kR xVTLkWKHDy3HwP2qWPPrsopjdwDMITYR95l9QA31XZwVTROxRbkhKS87lR4l0YDLuYRM cTew==; dara=google.com ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@gmail.com header.s=20230601 header.b="BV/1KqYv"; arc=pass (i=1 spf=pass spfdomain=gmail.com dkim=pass dkdomain=gmail.com dmarc=pass fromdomain=gmail.com); spf=pass (google.com: domain of linux-kernel+bounces-89460-ouuuleilei=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) smtp.mailfrom="linux-kernel+bounces-89460-ouuuleilei=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: from am.mirrors.kernel.org (am.mirrors.kernel.org. [2604:1380:4601:e00::3]) by mx.google.com with ESMTPS id e20-20020a170906081400b00a43106a5124si2358526ejd.840.2024.03.02.06.04.06 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 02 Mar 2024 06:04:06 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-89460-ouuuleilei=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) client-ip=2604:1380:4601:e00::3; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20230601 header.b="BV/1KqYv"; arc=pass (i=1 spf=pass spfdomain=gmail.com dkim=pass dkdomain=gmail.com dmarc=pass fromdomain=gmail.com); spf=pass (google.com: domain of linux-kernel+bounces-89460-ouuuleilei=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) smtp.mailfrom="linux-kernel+bounces-89460-ouuuleilei=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by am.mirrors.kernel.org (Postfix) with ESMTPS id 3EFF61F21A3B for ; Sat, 2 Mar 2024 14:04:06 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id BFDEF17C77; Sat, 2 Mar 2024 14:03:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="BV/1KqYv" Received: from mail-pl1-f176.google.com (mail-pl1-f176.google.com [209.85.214.176]) (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 D64737E8; Sat, 2 Mar 2024 14:03:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.176 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709388233; cv=none; b=Ur9bV0QUZXxBBgtN8XxOQ3Pr2+xelDvByEMLoh00CFKNrkB2+z3mtWZ4OTtoeQ16O46myehfO6gb0Et+VTUVUFotGQ8EB2GbRDLetSKpYYNjyyjmBkqAI/a+FX5EAFUIqESya1ynCgO2cs3XqYzg/aK3LHXq5ZAe4IoWJWWVvjA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709388233; c=relaxed/simple; bh=ON+p+fRGKbKs2n16LfRR4Sn2YZd0Y92AlSEpgvHleQc=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=MGIRdYNuQZhBjnDVWJJwPMvnIYOhaHH/K0ngoB9ioEzFJ7qeDork5O5fsSLotDgYcs28H5AwYl87QIIjj0BxMPi3Zq6bP4FeksvAe8CDsa+/1oDHPLhhiI29BgTtyp58Xhu2+0LJ4On3v7SimmbW99zjMtGiaBdWcWzp4wwvnqo= 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=BV/1KqYv; arc=none smtp.client-ip=209.85.214.176 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-pl1-f176.google.com with SMTP id d9443c01a7336-1dbd32cff0bso28063575ad.0; Sat, 02 Mar 2024 06:03:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1709388231; x=1709993031; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=oGPt7WWJ/meTyXMsy8NiR7qClff89VB73LNZFS09DAM=; b=BV/1KqYv6Ycfsh8rfM9B8+Hbwq6sZopjU/qkddDr9JJS7faRitcYrW00mm1E9kpCrK BZnfkUsR8J3MojCeDp77DiOqXVOAm8S9DgTy2cue+1CnJ8zw4ldeARM6+7BPqr3j0vxQ u1cPWN6oqix+hKdR+AAakQ9ca29aKTGw0fdUyc9l+/xQdyfAyoc6RjtEEFF8QgODffia kLxppvx6ycwOSdI1AB5Ej50nBQV4jncEW/7pOpeUes4mkqJLOCQRMq10YdhUbMAX7R3C v8dynT8+xXPtJSFJHkgYu8RsILae7Zi0fNyZY6esZaGfm8IMCh5LExMaA7uLRs4IUWus v9vQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709388231; x=1709993031; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=oGPt7WWJ/meTyXMsy8NiR7qClff89VB73LNZFS09DAM=; b=Bdcmuy1e7OuwQDiuu/yQX7dD641IhN0geNO13t5TEd4WGAxFcyQWEwP9oMGXlyiUq+ WHysOU4BCXfLytDIvdPyNI1RjZs9RQF73z/bE9EOF+U2TReHyd0Aqb/qygJ0swyLC3EH TGrmUcqfKBL9NHUJ3ANDlS67uotO53obHY1DjkkyR0a17rRsRYoDwPqmnOvbDs+hi+nE g4ER6paYdskzQja39V1iUjMKMgR7aPdXQUEpc8cxj7S7PlaYxVK2sqcaOJmTOJ5v2ANQ JopfZmvvnCfp4xLkv90ZaRgboBQAuZCxDCxWd3hSFGnzeE7igPnYlhApd4Xn34fgp/7W kMUA== X-Forwarded-Encrypted: i=1; AJvYcCUjXzQhfFGDWXfQ/RUzNfdAMhVsxOtbjxrf0LaxRZWoqRQId7I5OmycHjhH/uH8C0PgqswDinypMtJPMIabACrfU6hBQKa5k97SNoUk X-Gm-Message-State: AOJu0YzyMPWxiFTn/mPqsIgkV2GpAwI6SL77ajn0rxJeZaBHgE3Hosx2 DqgKpd9TqotmOggMhPmihyK30V4kMpP5EponCjLOtDfxKbxoope9 X-Received: by 2002:a17:902:f60c:b0:1db:3a22:1fd6 with SMTP id n12-20020a170902f60c00b001db3a221fd6mr5381617plg.66.1709388230940; Sat, 02 Mar 2024 06:03:50 -0800 (PST) Received: from localhost.localdomain ([49.142.40.215]) by smtp.gmail.com with ESMTPSA id v19-20020a17090a899300b0029951d04dc4sm4783322pjn.54.2024.03.02.06.03.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 02 Mar 2024 06:03:50 -0800 (PST) From: skseofh@gmail.com To: robh+dt@kernel.org, frowand.list@gmail.com Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Daero Lee Subject: [PATCH] of: fdt: add size 0 check after page align Date: Sat, 2 Mar 2024 23:03:35 +0900 Message-Id: <20240302140335.117769-1-skseofh@gmail.com> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1792423490027247403 X-GMAIL-MSGID: 1792423490027247403 From: Daero Lee After page aligning, the size may become zero. So I added exception handling code for size 0. example : 4K page size [before page align] base = 0x1800 size = 0x1100 [after page align] size = 0x900 base = 0x2000 size &= PAGE_MASK(~0x7FFF) = 0 Signed-off-by: Daero Lee --- drivers/of/fdt.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index bf502ba8da95..01156088fbb4 100644 --- a/drivers/of/fdt.c +++ b/drivers/of/fdt.c @@ -1232,6 +1232,11 @@ void __init __weak early_init_dt_add_memory_arch(u64 base, u64 size) base = PAGE_ALIGN(base); } size &= PAGE_MASK; + if (!size) { + pr_warn("Ignoring memory block 0x%llx - 0x%llx\n", + base, base + size); + return; + } if (base > MAX_MEMBLOCK_ADDR) { pr_warn("Ignoring memory block 0x%llx - 0x%llx\n",