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bh=q/cB4Y6zYi35tKuoN6G4/JIJq3FZA+1nclYd1TtN7K0=; b=REf/QJ7N/Z+LI+5V+iVMneubw7Ultt7hF7aby9U9bQc1JadMmQp7EI3tTcUqDqb+cUUni8 ct86fFDgZGzp0Va4IK41m+z6oMtbwgR55Vdz4AHvrpFdpwDuP3y/oM/je41mYL8WJ487Lv PmOO2+9csgasctKZnu3QwzQkKtDSWf0= 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-397-4hhBCgcnN-6yIxgr9mr-og-1; Mon, 23 Nov 2020 22:22:14 -0500 X-MC-Unique: 4hhBCgcnN-6yIxgr9mr-og-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 97F2110066FB; Tue, 24 Nov 2020 03:22:12 +0000 (UTC) Received: from [10.72.13.198] (ovpn-13-198.pek2.redhat.com [10.72.13.198]) by smtp.corp.redhat.com (Postfix) with ESMTP id 19D43620DE; Tue, 24 Nov 2020 03:22:04 +0000 (UTC) Subject: Re: netconsole deadlock with virtnet To: Jakub Kicinski , Steven Rostedt References: <20201117102341.GR47002@unreal> <20201117093325.78f1486d@gandalf.local.home> <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> From: Jason Wang Message-ID: <1133f1a4-6772-8aa3-41dd-edbc1ee76cee@redhat.com> Date: Tue, 24 Nov 2020 11:22:03 +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: <20201123112130.759b9487@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> Content-Language: en-US X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Cc: Petr Mladek , Leon Romanovsky , John Ogness , "Michael S. Tsirkin" , netdev , Amit Shah , virtualization@lists.linux-foundation.org, Sergey Senozhatsky , Ran Rozenstein , Itay Aveksis 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" Ck9uIDIwMjAvMTEvMjQg5LiK5Y2IMzoyMSwgSmFrdWIgS2ljaW5za2kgd3JvdGU6Cj4gT24gTW9u LCAyMyBOb3YgMjAyMCAxNDowOTozNCAtMDUwMCBTdGV2ZW4gUm9zdGVkdCB3cm90ZToKPj4gT24g TW9uLCAyMyBOb3YgMjAyMCAxMDo1Mjo1MiAtMDgwMAo+PiBKYWt1YiBLaWNpbnNraSA8a3ViYUBr ZXJuZWwub3JnPiB3cm90ZToKPj4KPj4+IE9uIE1vbiwgMjMgTm92IDIwMjAgMDk6MzE6MjggLTA1 MDAgU3RldmVuIFJvc3RlZHQgd3JvdGU6Cj4+Pj4gT24gTW9uLCAyMyBOb3YgMjAyMCAxMzowODo1 NSArMDIwMAo+Pj4+IExlb24gUm9tYW5vdnNreSA8bGVvbkBrZXJuZWwub3JnPiB3cm90ZToKPj4+ Pgo+Pj4+ICAgICAgCj4+Pj4+ICAgWyAgIDEwLjAyODAyNF0gQ2hhaW4gZXhpc3RzIG9mOgo+Pj4+ PiAgIFsgICAxMC4wMjgwMjVdICAgY29uc29sZV9vd25lciAtLT4gdGFyZ2V0X2xpc3RfbG9jayAt LT4gX3htaXRfRVRIRVIjMgo+Pj4+IE5vdGUsIHRoZSBwcm9ibGVtIGlzIHRoYXQgd2UgaGF2ZSBh IGxvY2F0aW9uIHRoYXQgZ3JhYnMgdGhlIHhtaXRfbG9jayB3aGlsZQo+Pj4+IGhvbGRpbmcgdGFy Z2V0X2xpc3RfbG9jayAoYW5kIHBvc3NpYmx5IGNvbnNvbGVfb3duZXIpLgo+Pj4gV2VsbCwgaXQg dHJ5X2xvY2tzIHRoZSB4bWl0X2xvY2suIERvZXMgbG9ja2RlcCB1bmRlcnN0YW5kIHRyeS1sb2Nr cz8KPj4+Cj4+PiAobm90IHRoYXQgSSBjb25kb25lIHRoZSBzaGVuYW5pZ2FucyB0aGF0IGFyZSBn b2luZyBvbiBoZXJlKQo+PiBEb2VzIGl0Pwo+Pgo+PiAJdmlydG5ldF9wb2xsX3R4KCkgewo+PiAJ CV9fbmV0aWZfdHhfbG9jaygpIHsKPj4gCQkJc3Bpbl9sb2NrKCZ0eHEtPl94bWl0X2xvY2spOwo+ IFVtcGYuIFJpZ2h0LiBJIHdhcyBsb29raW5nIGF0IHZpcnRuZXRfcG9sbF9jbGVhbnR4KCkKPgo+ PiBUaGF0IGxvb2tzIGxpa2Ugd2UgY2FuIGhhdmU6Cj4+Cj4+Cj4+IAlDUFUwCQlDUFUxCj4+IAkt LS0tCQktLS0tCj4+ICAgICBsb2NrKHhtaXRfbG9jaykKPj4KPj4gCQkgICAgbG9jayhjb25zb2xl KQo+PiAJCSAgICBsb2NrKHRhcmdldF9saXN0X2xvY2spCj4+IAkJICAgIF9fbmV0aWZfdHhfbG9j aygpCj4+IAkJICAgICAgICBsb2NrKHhtaXRfbG9jayk7Cj4+Cj4+IAkJCVtCTE9DS0VEXQo+Pgo+ PiAgICAgPGludGVycnVwdD4KPj4gICAgIGxvY2soY29uc29sZSkKPj4KPj4gICAgIFtCTE9DS0VE XQo+Pgo+Pgo+Pgo+PiAgIERFQURMT0NLLgo+Pgo+Pgo+PiBTbyB3aGVyZSBpcyB0aGUgdHJ5bG9j ayBoZXJlPwo+Pgo+PiBQZXJoYXBzIHlvdSBuZWVkIHRoZSB0cnlsb2NrIGluIHZpcnRuZXRfcG9s bF90eCgpPwo+IFRoYXQgY291bGQgd29yay4gQmVzdCBpZiB3ZSB1c2VkIG5vcm1hbCBsb2NrIGlm ICEhYnVkZ2V0LCBhbmQgdHJ5bG9jawo+IHdoZW4gYnVkZ2V0IGlzIDAuIEJ1dCBtYXliZSB0aGF0 J3MgdG9vIGhhaXJ5LgoKCklmIHdlIHVzZSB0cnlsb2NrLCB3ZSBwcm9iYWJseSBsb3NlKG9yIGRl bGF5KSB0eCBub3RpZmljYXRpb24gdGhhdCBtYXkgCmhhdmUgc2lkZSBlZmZlY3RzIHRvIHRoZSBz dGFjay4KCgo+Cj4gSSdtIGFzc3VtaW5nIGFsbCB0aGlzIHRyaWNraW5lc3MgY29tZXMgZnJvbSB2 aXJ0cXVldWVfZ2V0X2J1ZigpIG5lZWRpbmcKPiBsb2NraW5nIHZzIHRoZSBUWCBwYXRoPyBJdCdz IHByZXR0eSB1bnVzdWFsIGZvciB0aGUgY29tcGxldGlvbiBwYXRoIHRvCj4gbmVlZCBsb2NraW5n IHZzIHhtaXQgcGF0aC4KCgpUd28gcmVhc29ucyBmb3IgZG9pbmcgdGhpczoKCjEpIEZvciBzb21l IGhpc3RvcmljYWwgcmVhc29uLCB3ZSB0cnkgdG8gZnJlZSB0cmFuc21pdHRlZCB0eCBwYWNrZXRz IGluIAp4bWl0IChzZWUgZnJlZV9vbGRfeG1pdF9za2JzKCkgaW4gc3RhcnRfeG1pdCgpKSwgd2Ug Y2FuIHByb2JhYmx5IHJlbW92ZSAKdGhpcyBpZiB3ZSByZW1vdmUgdGhlIG5vbiB0eCBpbnRlcnJ1 cHQgbW9kZS4KMikgdmlydGlvIGNvcmUgcmVxdWlyZXMgdmlydHF1ZXVlX2dldF9idWYoKSB0byBi ZSBzeW5jaHJvbml6ZWQgd2l0aCAKdmlydHF1ZXVlX2FkZCgpLCB3ZSBwcm9iYWJseSBjYW4gc29s dmUgdGhpcyBidXQgaXQgcmVxdWlyZXMgc29tZSBub24gCnRyaXZpYWwgcmVmYWN0b3JpbmcgaW4g dGhlIHZpcnRpbyBjb3JlCgpCdHcsIGhhdmUgYSBxdWljayBzZWFyY2gsIHRoZXJlIGFyZSBzZXZl cmFsIG90aGVyIGRyaXZlcnMgdGhhdCB1c2VzIHR4IApsb2NrIGluIHRoZSB0eCBOQVBJLgoKVGhh bmtzCgo+CgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpW aXJ0dWFsaXphdGlvbiBtYWlsaW5nIGxpc3QKVmlydHVhbGl6YXRpb25AbGlzdHMubGludXgtZm91 bmRhdGlvbi5vcmcKaHR0cHM6Ly9saXN0cy5saW51eGZvdW5kYXRpb24ub3JnL21haWxtYW4vbGlz dGluZm8vdmlydHVhbGl6YXRpb24=