Received: by 2002:a05:6a10:1287:0:0:0:0 with SMTP id d7csp6352862pxv; Thu, 29 Jul 2021 12:23:00 -0700 (PDT) X-Google-Smtp-Source: ABdhPJx0Ey8Ntux5wSCaOc15O39czjx8iPJO8T2cbW1ArH2o8Z/wRM3W0b8vdU7jourjgLFV/yIm X-Received: by 2002:a17:906:784:: with SMTP id l4mr6106864ejc.357.1627586579824; Thu, 29 Jul 2021 12:22:59 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1627586579; cv=none; d=google.com; s=arc-20160816; b=WNo4jR5BYoiuWvyCYSfxgTW2xYnI1osYJXoe6Y5GElMCQj8qcmLOrE1mS2RLRiun7p ltP93nuszcAUBK/gv7+GcD8MvMOVHm4CHlSqG0XBKip/tikT2pyZnRz5Se7AIi3dKrRr ESe6TIfPPaGCFfB0a7txbABNDeZaHtFlmdUZkKtggbxVVnMoTYSk39yqy9IqDEUkMu4B eif2e3DPNCgLY2YhqVnixDuecL8mwglo7AygWkYrXhTNCqF/hDtTa+h0aOmGyiWZx3q4 QUlHova0XKaH+uT9fI5Z1W9408C8BMKKVcKG2Baqp9RILDCUa3Uuz27WlqN0u03ErsKA /3tQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:cc:to:subject :message-id:date:from:in-reply-to:references:mime-version :dkim-signature; bh=bbi3e3he60RiuUGGMSO9VXfHUkHWKRL5IulkRfQYiGc=; b=B0S1f4/yf2xJ/S3FC4FzTrZgK2qN/JvTV7xwocP75T+gmF05WMBrJcwNs/7hj7uFmF 4kZcv5+iAuzkCrarHQETe93ujQsyRdytlZCt/adga3+LjbVxDh5owJbeTgf2J58dQmaH K8IJT7st9+85rHUcg/BGeKRt0SCg2lrN0K5QoV7WWyqCHaFvK5oIJVZMY8HzKWY/y9x3 osRpus2c9kmncf3fw7/g81w+EFrq+apa9p3zfdmD5azc/+w/ACp2S2U0vEP3HfzUHxna 1+2zAV8LtJ2Qbfc8/YgW4rnqFzBVBeVO2JCwDh7B69Z2q1E9LLzG/CKxyse+taNalenB 3XeQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=cWHZA75i; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id gj23si4294319ejb.535.2021.07.29.12.22.35; Thu, 29 Jul 2021 12:22:59 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=cWHZA75i; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229724AbhG2TVS (ORCPT + 99 others); Thu, 29 Jul 2021 15:21:18 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:26480 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229606AbhG2TVR (ORCPT ); Thu, 29 Jul 2021 15:21:17 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1627586473; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=bbi3e3he60RiuUGGMSO9VXfHUkHWKRL5IulkRfQYiGc=; b=cWHZA75i8Rj9JWtLZyL14Yy9PclJcVdVJzknfcJO8/DCAF/3Gc3LZzn2vhuZQ38zYmPoMU CpjRnD4F0H8uGEkpxAHTDM2f1m9FKf70+nqH6zW4KLzLW8FDjLGELUzs1YJw3NLjsF6t93 a7AVAEZBWxW2XTVAzQaDo6LpKDlmc/E= Received: from mail-io1-f69.google.com (mail-io1-f69.google.com [209.85.166.69]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-63-DNMq_51bM-C_ZIyIVtLvqQ-1; Thu, 29 Jul 2021 15:21:10 -0400 X-MC-Unique: DNMq_51bM-C_ZIyIVtLvqQ-1 Received: by mail-io1-f69.google.com with SMTP id i10-20020a5e850a0000b029053ee90daa50so4436978ioj.2 for ; Thu, 29 Jul 2021 12:21:10 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=bbi3e3he60RiuUGGMSO9VXfHUkHWKRL5IulkRfQYiGc=; b=sYY1Zj4OJqXVee6/WlPOH6kimPwG9DUl2Y8viPDyB1BzJdO6faYF+IViG/T0zk6nSr zHmvLQo87bOImqjkpfzMZ163k17rlbN9wxmECyqsb8R85bsBHc9vjORyoH1N6VDQqbwn gjZr+pvjVCyW6dGr+VEW2QtyMzbG09LC0HxZTke1y03nsx6dE9lz1Oaq/M59wi/2lO+a vzw5drIn0h19q9rI7B9xWnCd0pWilxnpKNFz6ajyWfjPpeV/VvenLxvNCGIY4RJPa+1b o+YKEmQEI7S4LZ4RS6FLlOMdam8r1Yv8sjGZ7TySTnXJQ4V5W49iYG4iUr5wTHkkftZf wmpg== X-Gm-Message-State: AOAM532CiVej34rbab0lsXyzIFY+Qy6MRYW506Wrbd8MjZddKSX3xFis jcVEJumAOe3Rp+pqQSq4Csi9AFDzerwcwN41BdWMp4D7DNqg/0Yd5cL9G98LtoqhMsQwmFBrCHc pFmX8c3lvQb6WarVjTfSr8O7+Oh5/1A2RxksxJ5+R X-Received: by 2002:a92:cec5:: with SMTP id z5mr4491194ilq.226.1627586469740; Thu, 29 Jul 2021 12:21:09 -0700 (PDT) X-Received: by 2002:a92:cec5:: with SMTP id z5mr4491181ilq.226.1627586469553; Thu, 29 Jul 2021 12:21:09 -0700 (PDT) MIME-Version: 1.0 References: <20210729135250.32212-1-mlombard@redhat.com> In-Reply-To: From: Maurizio Lombardi Date: Thu, 29 Jul 2021 21:20:58 +0200 Message-ID: Subject: Re: [PATCH V3] iscsi_ibft: fix crash due to KASLR physical memory remapping To: Konrad Rzeszutek Wilk Cc: Mike Rapoport , bp@alien8.de, tglx@linutronix.de, x86@kernel.org, Peter Jones , konrad@kernel.org, George Kennedy , "Rafael J. Wysocki" , linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org =C4=8Dt 29. 7. 2021 v 19:03 odes=C3=ADlatel Konrad Rzeszutek Wilk napsal: > One part that I think you are saying but just want to double-check is > that the isa_bus_to_virt() virtual addresses it returns - those are > different every boot when KASLR is enabled, right? > Yes. If KASLR is disabled, the physical memory is mapped at virtual base address 0xffff888000000000 (on AMD64); if enabled, KASLR will randomize it. Maurizio