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=-4.0 required=3.0 tests=BAYES_00,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 08F12C4363D for ; Wed, 7 Oct 2020 22:45:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BFA5D21775 for ; Wed, 7 Oct 2020 22:45:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728862AbgJGWpu convert rfc822-to-8bit (ORCPT ); Wed, 7 Oct 2020 18:45:50 -0400 Received: from mail.kernel.org ([198.145.29.99]:51608 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728339AbgJGWpu (ORCPT ); Wed, 7 Oct 2020 18:45:50 -0400 From: bugzilla-daemon@bugzilla.kernel.org To: kvm@vger.kernel.org Subject: [Bug 208767] kernel stack overflow due to Lazy update IOAPIC on an x86_64 *host*, when gpu is passthrough to macos guest vm Date: Wed, 07 Oct 2020 22:45:49 +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: alex.williamson@redhat.com 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: cc 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 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=208767 Alex Williamson (alex.williamson@redhat.com) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |alex.williamson@redhat.com --- Comment #7 from Alex Williamson (alex.williamson@redhat.com) --- (In reply to Paolo Bonzini from comment #1) > This should have been fixed by commit > 8be8f932e3db5fe4ed178b8892eeffeab530273a in Linux 5.7. This is not fixed and it's not unique to a macos VM, a Linux guest can also reproduce this. I've seen this both during PXE boot and during shutdown with certain NIC combinations (see rhbz1867373). The only workaround is to disable acpiv (kvm_intel.enable_apicv=0). Any suggestions, Paolo? -- You are receiving this mail because: You are watching the assignee of the bug.