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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 6CDA6C432C0 for ; Fri, 22 Nov 2019 20:54:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4310320706 for ; Fri, 22 Nov 2019 20:54:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726792AbfKVUyz (ORCPT ); Fri, 22 Nov 2019 15:54:55 -0500 Received: from mga04.intel.com ([192.55.52.120]:26529 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726089AbfKVUyy (ORCPT ); Fri, 22 Nov 2019 15:54:54 -0500 X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 22 Nov 2019 12:54:54 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,231,1571727600"; d="scan'208";a="358238784" Received: from sjchrist-coffee.jf.intel.com (HELO linux.intel.com) ([10.54.74.41]) by orsmga004.jf.intel.com with ESMTP; 22 Nov 2019 12:54:53 -0800 Date: Fri, 22 Nov 2019 12:54:53 -0800 From: Sean Christopherson To: syzbot Cc: casey@schaufler-ca.com, frederic@kernel.org, gregkh@linuxfoundation.org, hpa@zytor.com, jmattson@google.com, jmorris@namei.org, karahmed@amazon.de, kstewart@linuxfoundation.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, mingo@kernel.org, mingo@redhat.com, pasha.tatashin@oracle.com, pbonzini@redhat.com, pombredanne@nexb.com, rkrcmar@redhat.com, serge@hallyn.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, x86@kernel.org Subject: Re: general protection fault in __schedule (2) Message-ID: <20191122205453.GE31235@linux.intel.com> References: <000000000000e67a05057314ddf6@google.com> <0000000000005eb1070597ea3a1f@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0000000000005eb1070597ea3a1f@google.com> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Thu, Nov 21, 2019 at 11:19:00PM -0800, syzbot wrote: > syzbot has bisected this bug to: > > commit 8fcc4b5923af5de58b80b53a069453b135693304 > Author: Jim Mattson > Date: Tue Jul 10 09:27:20 2018 +0000 > > kvm: nVMX: Introduce KVM_CAP_NESTED_STATE > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=124cdbace00000 > start commit: 234b69e3 ocfs2: fix ocfs2 read block panic > git tree: upstream > final crash: https://syzkaller.appspot.com/x/report.txt?x=114cdbace00000 > console output: https://syzkaller.appspot.com/x/log.txt?x=164cdbace00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=5fa12be50bca08d8 > dashboard link: https://syzkaller.appspot.com/bug?extid=7e2ab84953e4084a638d > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=150f0a4e400000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17f67111400000 > > Reported-by: syzbot+7e2ab84953e4084a638d@syzkaller.appspotmail.com > Fixes: 8fcc4b5923af ("kvm: nVMX: Introduce KVM_CAP_NESTED_STATE") > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection Is there a way to have syzbot stop processing/bisecting these things after a reasonable amount of time? The original crash is from August of last year... Note, the original crash is actually due to KVM's put_kvm() fd race, but whatever we want to blame, it's a duplicate. #syz dup: general protection fault in kvm_lapic_hv_timer_in_use