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=-2.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, USER_AGENT_MUTT 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 CEF25C43381 for ; Fri, 22 Mar 2019 11:07:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 876952190A for ; Fri, 22 Mar 2019 11:07:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553252839; bh=yMpV7W0kR4jJMqeX4l94uXNEodHoX3ZOKpeOC/EN5O4=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=RQzZeDY44ohRKZsSaKBJtmKZBJdyAiwe/m+MD5URltNddSHglbPLXPMho2bocf8QC Co5K1ykmsqXCXHysjIA6ZVQU2sfMAQLgunSzxPe4pB3gliS7/Fb3fQ4mJnzZO3zD6M FykHpM6AA3jghZjfaJIwKN3X3+QQgNbqKNKu+nuU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727786AbfCVLHT (ORCPT ); Fri, 22 Mar 2019 07:07:19 -0400 Received: from mail.kernel.org ([198.145.29.99]:41592 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727762AbfCVLHS (ORCPT ); Fri, 22 Mar 2019 07:07:18 -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 CAC132075C; Fri, 22 Mar 2019 11:07:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553252838; bh=yMpV7W0kR4jJMqeX4l94uXNEodHoX3ZOKpeOC/EN5O4=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=0QyzWJvS7Qmldenoj4LjAxlIRzoaJOWIgVl1nEeeNs4pMYqS0OoCfO0qX07h3rOE0 HV6f8SGGzRiVv8GOjOSNhoGsEPIbFOSUxfYxDflgijMI5vOVjJ2prtClpLstmeR4VL m8Lr5CUAWcraLPLzUidEw07yiSyeIUtcFEBlsvbg= Date: Fri, 22 Mar 2019 12:07:15 +0100 From: Greg KH To: Zubin Mithra Cc: stable@vger.kernel.org, groeck@chromium.org, kernellwp@gmail.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com Subject: Re: bbeac2830f4d ("KVM: X86: Fix residual mmio emulation request to userspace") Message-ID: <20190322110715.GC11649@kroah.com> References: <20190321213737.GA181869@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190321213737.GA181869@google.com> User-Agent: Mutt/1.11.4 (2019-03-13) Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On Thu, Mar 21, 2019 at 02:37:39PM -0700, Zubin Mithra wrote: > Hello, > > Syzkaller has triggered a warning when fuzzing a 4.4 kernel with the following stacktrace. > Call Trace: > [] __dump_stack lib/dump_stack.c:15 [inline] > [] dump_stack+0xba/0x10e lib/dump_stack.c:51 > [] panic+0x1c4/0x389 kernel/panic.c:116 > [] __warn+0x175/0x1be kernel/panic.c:470 > [] warn_slowpath_null+0x3d/0x42 kernel/panic.c:514 > [] kvm_arch_vcpu_ioctl_run+0x2ce/0x35a3 arch/x86/kvm/x86.c:6896 > [] kvm_vcpu_ioctl+0x37f/0xa83 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2437 > [] vfs_ioctl fs/ioctl.c:43 [inline] > [] do_vfs_ioctl+0xcb6/0xd15 fs/ioctl.c:630 > [] SYSC_ioctl fs/ioctl.c:645 [inline] > [] SyS_ioctl+0x6d/0xa8 fs/ioctl.c:636 > [] entry_SYSCALL_64_fastpath+0x31/0xb3 > > Could the following patch be applied to v4.4.y and 4.9.y? > * bbeac2830f4d ("KVM: X86: Fix residual mmio emulation request to userspace") > > Tests run: > * Chrome OS tryjobs > * Syzkaller reproducer Now queued up, thanks! greg k-h