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=-7.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=unavailable 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 3281AC5B57D for ; Tue, 2 Jul 2019 07:23:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 14BC320836 for ; Tue, 2 Jul 2019 07:23:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726150AbfGBHXJ (ORCPT ); Tue, 2 Jul 2019 03:23:09 -0400 Received: from mx1.redhat.com ([209.132.183.28]:39528 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725845AbfGBHXJ (ORCPT ); Tue, 2 Jul 2019 03:23:09 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 919BBA3B5E; Tue, 2 Jul 2019 07:23:08 +0000 (UTC) Received: from [10.72.12.205] (ovpn-12-205.pek2.redhat.com [10.72.12.205]) by smtp.corp.redhat.com (Postfix) with ESMTP id 915B75D9D3; Tue, 2 Jul 2019 07:23:03 +0000 (UTC) Subject: Re: INFO: task hung in vhost_init_device_iotlb To: Dmitry Vyukov , "Michael S. Tsirkin" Cc: syzbot , KVM list , LKML , netdev , syzkaller-bugs , virtualization@lists.linux-foundation.org References: <0000000000007e86fd058095533f@google.com> <20190129105957-mutt-send-email-mst@kernel.org> From: Jason Wang Message-ID: <0d542a30-7122-aea7-07fe-b49dedcd9daf@redhat.com> Date: Tue, 2 Jul 2019 15:23:01 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Tue, 02 Jul 2019 07:23:08 +0000 (UTC) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On 2019/1/30 下午4:12, Dmitry Vyukov wrote: > On Tue, Jan 29, 2019 at 5:06 PM Michael S. Tsirkin wrote: >> On Tue, Jan 29, 2019 at 01:22:02AM -0800, syzbot wrote: >>> Hello, >>> >>> syzbot found the following crash on: >>> >>> HEAD commit: 983542434e6b Merge tag 'edac_fix_for_5.0' of git://git.ker.. >>> git tree: upstream >>> console output:https://syzkaller.appspot.com/x/log.txt?x=17476498c00000 >>> kernel config:https://syzkaller.appspot.com/x/.config?x=505743eba4e4f68 >>> dashboard link:https://syzkaller.appspot.com/bug?extid=40e28a8bd59d10ed0c42 >>> compiler: gcc (GCC) 9.0.0 20181231 (experimental) >>> >>> Unfortunately, I don't have any reproducer for this crash yet. >> Hmm nothing obvious below. Generic corruption elsewhere? > Hard to say, a silent memory corruption is definitely possible. > If there is nothing obvious let's wait, maybe syzbot will come up with > a repro or we get more such hangs so that it will be possible to rule > out flakes/corruptions. > It hasn't been reproduced for a while. We can invalid this and see if we can get it again. So #syz invalid Thanks