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 X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,T_DKIMWL_WL_HIGH,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 581C8C43219 for ; Thu, 2 May 2019 15:42:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1FA8C204EC for ; Thu, 2 May 2019 15:42:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1556811774; bh=ScKkV3RlCgegUjZxC97f52fjXHPn9Qxp5wXrr3irFr8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=OMwXpP1Q4DeCePTfYu3OMJlBD6PSqrkCCuOfRJNm9BzSzpKz0MmjuLqg+7NwekSLo wWCQ73JLMkdV8/dVMydYzD6R9RSnzavgSrYOK+hQCkd2Kz/iEXmvEaYurNqXlL4khl 486dlUaNWv/DCgFqQUse7iIwnq0qrDaRVJ9ZUJOM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728068AbfEBP1s (ORCPT ); Thu, 2 May 2019 11:27:48 -0400 Received: from mail.kernel.org ([198.145.29.99]:44716 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728053AbfEBP1p (ORCPT ); Thu, 2 May 2019 11:27:45 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 99FDA21783; Thu, 2 May 2019 15:27:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1556810865; bh=ScKkV3RlCgegUjZxC97f52fjXHPn9Qxp5wXrr3irFr8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eHl99IsLxGEO5ZSOsNG83m/OZOx/lG5hxAdDvwNfs+hs4SjsQgpbcR1qoVQagv3uD IvzHuG9uHfI/v57c3p5fdPrHSC3vcFuq4jnC9XtlvSNo9FW2/lC2DgoI5wOe2ZyzQP G8iSoZUWZP1LhwExZO9AZ4+QeN6e/Wb1hxdvE6dU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Matteo Croce , Borislav Petkov , "H. Peter Anvin" , Ingo Molnar , Thomas Gleixner , x86-ml , "Sasha Levin (Microsoft)" Subject: [PATCH 4.19 59/72] x86/realmode: Dont leak the trampoline kernel address Date: Thu, 2 May 2019 17:21:21 +0200 Message-Id: <20190502143338.064447209@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190502143333.437607839@linuxfoundation.org> References: <20190502143333.437607839@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org [ Upstream commit b929a500d68479163c48739d809cbf4c1335db6f ] Since commit ad67b74d2469 ("printk: hash addresses printed with %p") at boot "____ptrval____" is printed instead of the trampoline addresses: Base memory trampoline at [(____ptrval____)] 99000 size 24576 Remove the print as we don't want to leak kernel addresses and this statement is not needed anymore. Fixes: ad67b74d2469d9b8 ("printk: hash addresses printed with %p") Signed-off-by: Matteo Croce Signed-off-by: Borislav Petkov Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: Thomas Gleixner Cc: x86-ml Link: https://lkml.kernel.org/r/20190326203046.20787-1-mcroce@redhat.com Signed-off-by: Sasha Levin (Microsoft) --- arch/x86/realmode/init.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/x86/realmode/init.c b/arch/x86/realmode/init.c index d10105825d57..47d097946872 100644 --- a/arch/x86/realmode/init.c +++ b/arch/x86/realmode/init.c @@ -20,8 +20,6 @@ void __init set_real_mode_mem(phys_addr_t mem, size_t size) void *base = __va(mem); real_mode_header = (struct real_mode_header *) base; - printk(KERN_DEBUG "Base memory trampoline at [%p] %llx size %zu\n", - base, (unsigned long long)mem, size); } void __init reserve_real_mode(void) -- 2.19.1