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=-5.1 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 9B652C56201 for ; Tue, 24 Nov 2020 08:57:44 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 014C22073C for ; Tue, 24 Nov 2020 08:57:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="eD7NCZxb" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 014C22073C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=virtualization-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id 4C29B8710B; Tue, 24 Nov 2020 08:57:43 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id CyxR8TgLdq16; Tue, 24 Nov 2020 08:57:42 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by hemlock.osuosl.org (Postfix) with ESMTP id 07EED8707F; Tue, 24 Nov 2020 08:57:42 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id D976CC163C; Tue, 24 Nov 2020 08:57:41 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id 6D713C0052 for ; Tue, 24 Nov 2020 08:57:40 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id 5056A85135 for ; Tue, 24 Nov 2020 08:57:40 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id X7x_ZqgsxyRv for ; Tue, 24 Nov 2020 08:57:39 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [216.205.24.124]) by fraxinus.osuosl.org (Postfix) with ESMTPS id AE4A2844D5 for ; Tue, 24 Nov 2020 08:57:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1606208258; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=xJwIP3nSo2Uj/Swvhl1TAV1Y63wZ0HYh6rGKpKJBlYE=; b=eD7NCZxbmxC7qf1Spt8mQGCl/9DGZLhTvK8ATAzecjPZrCzPARWpVdKhumZXRYy1PiXatM fGtfS+4r7qKilSzBJJXNwxNeypoi7XUvmmhWwqt37b02icgYCcnyUaVqpJvznQMzL9v4z3 ZnJZCj17+ff4vnnRQWhM1jl2YZL0gKY= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-373-AYv1W39-MCqm9Pn8IDBYPw-1; Tue, 24 Nov 2020 03:57:34 -0500 X-MC-Unique: AYv1W39-MCqm9Pn8IDBYPw-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id D8383A0BD4; Tue, 24 Nov 2020 08:57:31 +0000 (UTC) Received: from [10.72.13.120] (ovpn-13-120.pek2.redhat.com [10.72.13.120]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0D64160C13; Tue, 24 Nov 2020 08:57:24 +0000 (UTC) Subject: Re: netconsole deadlock with virtnet To: Leon Romanovsky References: <93b42091-66f2-bb92-6822-473167b2698d@redhat.com> <20201118091257.2ee6757a@gandalf.local.home> <20201123110855.GD3159@unreal> <20201123093128.701cf81b@gandalf.local.home> <20201123105252.1c295138@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> <20201123140934.38748be3@gandalf.local.home> <20201123112130.759b9487@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> <1133f1a4-6772-8aa3-41dd-edbc1ee76cee@redhat.com> <20201124080152.GG3159@unreal> From: Jason Wang Message-ID: <6f046c51-cdcc-77f9-4859-2508d08126f8@redhat.com> Date: Tue, 24 Nov 2020 16:57:23 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20201124080152.GG3159@unreal> Content-Language: en-US X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Cc: Petr Mladek , John Ogness , "Michael S. Tsirkin" , netdev , Amit Shah , Steven Rostedt , virtualization@lists.linux-foundation.org, Sergey Senozhatsky , Ran Rozenstein , Itay Aveksis , Jakub Kicinski X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" Ck9uIDIwMjAvMTEvMjQg5LiL5Y2INDowMSwgTGVvbiBSb21hbm92c2t5IHdyb3RlOgo+IE9uIFR1 ZSwgTm92IDI0LCAyMDIwIGF0IDExOjIyOjAzQU0gKzA4MDAsIEphc29uIFdhbmcgd3JvdGU6Cj4+ IE9uIDIwMjAvMTEvMjQg5LiK5Y2IMzoyMSwgSmFrdWIgS2ljaW5za2kgd3JvdGU6Cj4+PiBPbiBN b24sIDIzIE5vdiAyMDIwIDE0OjA5OjM0IC0wNTAwIFN0ZXZlbiBSb3N0ZWR0IHdyb3RlOgo+Pj4+ IE9uIE1vbiwgMjMgTm92IDIwMjAgMTA6NTI6NTIgLTA4MDAKPj4+PiBKYWt1YiBLaWNpbnNraSA8 a3ViYUBrZXJuZWwub3JnPiB3cm90ZToKPj4+Pgo+Pj4+PiBPbiBNb24sIDIzIE5vdiAyMDIwIDA5 OjMxOjI4IC0wNTAwIFN0ZXZlbiBSb3N0ZWR0IHdyb3RlOgo+Pj4+Pj4gT24gTW9uLCAyMyBOb3Yg MjAyMCAxMzowODo1NSArMDIwMAo+Pj4+Pj4gTGVvbiBSb21hbm92c2t5IDxsZW9uQGtlcm5lbC5v cmc+IHdyb3RlOgo+Pj4+Pj4KPj4+Pj4+PiAgICBbICAgMTAuMDI4MDI0XSBDaGFpbiBleGlzdHMg b2Y6Cj4+Pj4+Pj4gICAgWyAgIDEwLjAyODAyNV0gICBjb25zb2xlX293bmVyIC0tPiB0YXJnZXRf bGlzdF9sb2NrIC0tPiBfeG1pdF9FVEhFUiMyCj4+Pj4+PiBOb3RlLCB0aGUgcHJvYmxlbSBpcyB0 aGF0IHdlIGhhdmUgYSBsb2NhdGlvbiB0aGF0IGdyYWJzIHRoZSB4bWl0X2xvY2sgd2hpbGUKPj4+ Pj4+IGhvbGRpbmcgdGFyZ2V0X2xpc3RfbG9jayAoYW5kIHBvc3NpYmx5IGNvbnNvbGVfb3duZXIp Lgo+Pj4+PiBXZWxsLCBpdCB0cnlfbG9ja3MgdGhlIHhtaXRfbG9jay4gRG9lcyBsb2NrZGVwIHVu ZGVyc3RhbmQgdHJ5LWxvY2tzPwo+Pj4+Pgo+Pj4+PiAobm90IHRoYXQgSSBjb25kb25lIHRoZSBz aGVuYW5pZ2FucyB0aGF0IGFyZSBnb2luZyBvbiBoZXJlKQo+Pj4+IERvZXMgaXQ/Cj4+Pj4KPj4+ PiAJdmlydG5ldF9wb2xsX3R4KCkgewo+Pj4+IAkJX19uZXRpZl90eF9sb2NrKCkgewo+Pj4+IAkJ CXNwaW5fbG9jaygmdHhxLT5feG1pdF9sb2NrKTsKPj4+IFVtcGYuIFJpZ2h0LiBJIHdhcyBsb29r aW5nIGF0IHZpcnRuZXRfcG9sbF9jbGVhbnR4KCkKPj4+Cj4+Pj4gVGhhdCBsb29rcyBsaWtlIHdl IGNhbiBoYXZlOgo+Pj4+Cj4+Pj4KPj4+PiAJQ1BVMAkJQ1BVMQo+Pj4+IAktLS0tCQktLS0tCj4+ Pj4gICAgICBsb2NrKHhtaXRfbG9jaykKPj4+Pgo+Pj4+IAkJICAgIGxvY2soY29uc29sZSkKPj4+ PiAJCSAgICBsb2NrKHRhcmdldF9saXN0X2xvY2spCj4+Pj4gCQkgICAgX19uZXRpZl90eF9sb2Nr KCkKPj4+PiAJCSAgICAgICAgbG9jayh4bWl0X2xvY2spOwo+Pj4+Cj4+Pj4gCQkJW0JMT0NLRURd Cj4+Pj4KPj4+PiAgICAgIDxpbnRlcnJ1cHQ+Cj4+Pj4gICAgICBsb2NrKGNvbnNvbGUpCj4+Pj4K Pj4+PiAgICAgIFtCTE9DS0VEXQo+Pj4+Cj4+Pj4KPj4+Pgo+Pj4+ICAgIERFQURMT0NLLgo+Pj4+ Cj4+Pj4KPj4+PiBTbyB3aGVyZSBpcyB0aGUgdHJ5bG9jayBoZXJlPwo+Pj4+Cj4+Pj4gUGVyaGFw cyB5b3UgbmVlZCB0aGUgdHJ5bG9jayBpbiB2aXJ0bmV0X3BvbGxfdHgoKT8KPj4+IFRoYXQgY291 bGQgd29yay4gQmVzdCBpZiB3ZSB1c2VkIG5vcm1hbCBsb2NrIGlmICEhYnVkZ2V0LCBhbmQgdHJ5 bG9jawo+Pj4gd2hlbiBidWRnZXQgaXMgMC4gQnV0IG1heWJlIHRoYXQncyB0b28gaGFpcnkuCj4+ Cj4+IElmIHdlIHVzZSB0cnlsb2NrLCB3ZSBwcm9iYWJseSBsb3NlKG9yIGRlbGF5KSB0eCBub3Rp ZmljYXRpb24gdGhhdCBtYXkgaGF2ZQo+PiBzaWRlIGVmZmVjdHMgdG8gdGhlIHN0YWNrLgo+Pgo+ Pgo+Pj4gSSdtIGFzc3VtaW5nIGFsbCB0aGlzIHRyaWNraW5lc3MgY29tZXMgZnJvbSB2aXJ0cXVl dWVfZ2V0X2J1ZigpIG5lZWRpbmcKPj4+IGxvY2tpbmcgdnMgdGhlIFRYIHBhdGg/IEl0J3MgcHJl dHR5IHVudXN1YWwgZm9yIHRoZSBjb21wbGV0aW9uIHBhdGggdG8KPj4+IG5lZWQgbG9ja2luZyB2 cyB4bWl0IHBhdGguCj4+Cj4+IFR3byByZWFzb25zIGZvciBkb2luZyB0aGlzOgo+Pgo+PiAxKSBG b3Igc29tZSBoaXN0b3JpY2FsIHJlYXNvbiwgd2UgdHJ5IHRvIGZyZWUgdHJhbnNtaXR0ZWQgdHgg cGFja2V0cyBpbiB4bWl0Cj4+IChzZWUgZnJlZV9vbGRfeG1pdF9za2JzKCkgaW4gc3RhcnRfeG1p dCgpKSwgd2UgY2FuIHByb2JhYmx5IHJlbW92ZSB0aGlzIGlmCj4+IHdlIHJlbW92ZSB0aGUgbm9u IHR4IGludGVycnVwdCBtb2RlLgo+PiAyKSB2aXJ0aW8gY29yZSByZXF1aXJlcyB2aXJ0cXVldWVf Z2V0X2J1ZigpIHRvIGJlIHN5bmNocm9uaXplZCB3aXRoCj4+IHZpcnRxdWV1ZV9hZGQoKSwgd2Ug cHJvYmFibHkgY2FuIHNvbHZlIHRoaXMgYnV0IGl0IHJlcXVpcmVzIHNvbWUgbm9uIHRyaXZpYWwK Pj4gcmVmYWN0b3JpbmcgaW4gdGhlIHZpcnRpbyBjb3JlCj4gU28gaG93IHdpbGwgd2Ugc29sdmUg b3VyIGxvY2tkZXAgaXNzdWVzPwo+Cj4gVGhhbmtzCgoKSXQncyBub3QgY2xlYXIgdG8gbWUgdGhh dCB3aGV0aGVyIGl0J3MgYSB2aXJ0aW8tbmV0IHNwZWNpZmljIGlzc3VlLiBFLmcgCnRoZSBhYm92 ZSBkZWFkbG9jayBsb29rcyBsaWtlIGEgZ2VuZXJpYyBpc3N1ZSBzbyB3b3JrYXJvdW5kIGl0IHZp YSAKdmlydGlvLW5ldCBtYXkgbm90IGhlbHAgZm9yIG90aGVyIGRyaXZlcnMuCgpUaGFua3MKCgo+ Cj4+IEJ0dywgaGF2ZSBhIHF1aWNrIHNlYXJjaCwgdGhlcmUgYXJlIHNldmVyYWwgb3RoZXIgZHJp dmVycyB0aGF0IHVzZXMgdHggbG9jawo+PiBpbiB0aGUgdHggTkFQSS4KPj4KPj4gVGhhbmtzCj4+ CgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpWaXJ0dWFs aXphdGlvbiBtYWlsaW5nIGxpc3QKVmlydHVhbGl6YXRpb25AbGlzdHMubGludXgtZm91bmRhdGlv bi5vcmcKaHR0cHM6Ly9saXN0cy5saW51eGZvdW5kYXRpb24ub3JnL21haWxtYW4vbGlzdGluZm8v dmlydHVhbGl6YXRpb24=