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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 80C3BEB64DB for ; Mon, 19 Jun 2023 10:34:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231449AbjFSKeP (ORCPT ); Mon, 19 Jun 2023 06:34:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41116 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231705AbjFSKeJ (ORCPT ); Mon, 19 Jun 2023 06:34:09 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 413E1102 for ; Mon, 19 Jun 2023 03:34:02 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 8577060B5E for ; Mon, 19 Jun 2023 10:34:01 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 997DAC433C8; Mon, 19 Jun 2023 10:34:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1687170841; bh=apa5LjQUCPwHfND7dLxHBsRZpGi5SwgtmBlh59yV+Bw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Th1P2tOIH3O1eW79Ax9PfyVVZOqm6xikuMDPFT10lsDWOcGHfZBEE++1dlekVgY6F auEedqcjoepEDw9YXB1JLh4USTu6fFrCJ+quD65T0w61PqYWEwuS9f2Q8Bv7pPLXZf dsVthHWqnKnj7j2nogq9y2nzH34VMjEL/z8GVmik= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Liviu Dudau , Thomas Bogendoerfer , Sasha Levin Subject: [PATCH 6.3 037/187] mips: Move initrd_start check after initrd address sanitisation. Date: Mon, 19 Jun 2023 12:27:35 +0200 Message-ID: <20230619102159.420385902@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230619102157.579823843@linuxfoundation.org> References: <20230619102157.579823843@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Liviu Dudau [ Upstream commit 4897a898a216058dec55e5e5902534e6e224fcdf ] PAGE_OFFSET is technically a virtual address so when checking the value of initrd_start against it we should make sure that it has been sanitised from the values passed by the bootloader. Without this change, even with a bootloader that passes correct addresses for an initrd, we are failing to load it on MT7621 boards, for example. Signed-off-by: Liviu Dudau Signed-off-by: Thomas Bogendoerfer Signed-off-by: Sasha Levin --- arch/mips/kernel/setup.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c index f1c88f8a1dc51..81dbb4ef52317 100644 --- a/arch/mips/kernel/setup.c +++ b/arch/mips/kernel/setup.c @@ -158,10 +158,6 @@ static unsigned long __init init_initrd(void) pr_err("initrd start must be page aligned\n"); goto disable; } - if (initrd_start < PAGE_OFFSET) { - pr_err("initrd start < PAGE_OFFSET\n"); - goto disable; - } /* * Sanitize initrd addresses. For example firmware @@ -174,6 +170,11 @@ static unsigned long __init init_initrd(void) initrd_end = (unsigned long)__va(end); initrd_start = (unsigned long)__va(__pa(initrd_start)); + if (initrd_start < PAGE_OFFSET) { + pr_err("initrd start < PAGE_OFFSET\n"); + goto disable; + } + ROOT_DEV = Root_RAM0; return PFN_UP(end); disable: -- 2.39.2