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 19E74C001B0 for ; Tue, 15 Aug 2023 20:31:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235286AbjHOUat (ORCPT ); Tue, 15 Aug 2023 16:30:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41228 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234108AbjHOUaT (ORCPT ); Tue, 15 Aug 2023 16:30:19 -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 EA1BE1BF1 for ; Tue, 15 Aug 2023 13:30:18 -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 6A59860ACB for ; Tue, 15 Aug 2023 20:30:18 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id C18ADC433C8 for ; Tue, 15 Aug 2023 20:30:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1692131417; bh=u8sf22ClvyoN5faIqPVo5jRIUePf2ddJ1EOz4P/KMWs=; h=From:To:Subject:Date:In-Reply-To:References:From; b=NTY0Kq2cyVVpP4B+rRD4mO7Mfe4KdFz31diBtM/L0nUHqUF1E5rNSD2ORgLgbTk6Q /ZztnMpM5Mte75oATqRJwIHgs8dtf/mC14ffoiagpLphZy9n0e+76b84Kk2ziJvI/G X8qpn6joYqu7gtloBkuneBDUTYmR78SEUgQ56pEOnEJc9PiQCqrr/cBR2IoIBjsOb3 QdGJ1OUPZX2KI4n6F+AhBGpGxH93K5dtXEWAPAHlAEUn++DyaiHr90EJ2DsB5m5ON/ kaL7smpdAkx8t7u6PjysN/hPvCwxaxEpj0EVGYLlE0YIMmsdwLfWxNlXZ/3zRJs/2p VukCYBZHoM8Xg== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id A2F8BC53BD3; Tue, 15 Aug 2023 20:30:17 +0000 (UTC) From: bugzilla-daemon@kernel.org To: kvm@vger.kernel.org Subject: [Bug 217796] latest Zen Inception fixes breaks nested kvm virtualization on AMD Date: Tue, 15 Aug 2023 20:30:17 +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: blocking X-Bugzilla-Who: seanjc@google.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 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: quoted-printable 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=3D217796 Sean Christopherson (seanjc@google.com) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |seanjc@google.com --- Comment #2 from Sean Christopherson (seanjc@google.com) --- This is going to sound completely ridiculous, but can you try the fix for t= he guest RFLAGS corruption issue in the return thunk? It's definitely unlikely that the _only_ symptom is an unexpected OOM, but it's theoretically possib= le, e.g. if your setup only triggers KVM (bare metal host) emulation in a handf= ul of flows, and one of those flows just happens to send a single Jcc in the w= rong direction. https://lore.kernel.org/all/20230811155255.250835-1-seanjc@google.com --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=