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=-1.0 required=3.0 tests=MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no 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 0F91EC43331 for ; Wed, 1 Apr 2020 17:09:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D1F5D20719 for ; Wed, 1 Apr 2020 17:09:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732651AbgDARJl convert rfc822-to-8bit (ORCPT ); Wed, 1 Apr 2020 13:09:41 -0400 Received: from mail.kernel.org ([198.145.29.99]:60216 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726640AbgDARJl (ORCPT ); Wed, 1 Apr 2020 13:09:41 -0400 From: bugzilla-daemon@bugzilla.kernel.org To: kvm@vger.kernel.org Subject: [Bug 203923] Running a nested freedos on AMD Athlon i686-pae results in NULL pointer dereference in L0 (kvm_mmu_load) Date: Wed, 01 Apr 2020 17:09:40 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo virtualization_kvm@kernel-bugs.osdl.org X-Bugzilla-Product: Virtualization X-Bugzilla-Component: kvm X-Bugzilla-Version: unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: jpalecek@web.de X-Bugzilla-Status: REOPENED X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: virtualization_kvm@kernel-bugs.osdl.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=203923 --- Comment #9 from Jiri Palecek (jpalecek@web.de) --- (In reply to Anders Kaseorg from comment #8) > The second patch was committed as v5.4-rc1~138^2~6. > > I found this while staring at a similar-looking kvm_mmu_load NULL > dereference on the hardware kernel while starting a nested VM on an AMD > Ryzen 7 1800X, kernel 5.4.28. Should I try to expand this into a full > report, or does your original recipe still reproduce? Hi. I was going to say your problem was likely to be something else, because that original problem got fixed, and anyway all of my problems with kvm were specifically related to 32bit. However then I tried it for myself and it's still broken, albeit with a different error message. Oh well... -- You are receiving this mail because: You are watching the assignee of the bug.