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=-6.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS 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 4F317C2BA83 for ; Wed, 12 Feb 2020 10:19:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 176A02082F for ; Wed, 12 Feb 2020 10:19:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="KY84ElQB" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727582AbgBLKT6 (ORCPT ); Wed, 12 Feb 2020 05:19:58 -0500 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:31257 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725887AbgBLKT6 (ORCPT ); Wed, 12 Feb 2020 05:19:58 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1581502796; 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=pkNV/KaDwN6AKmUOQ5xnMqy8J0aNzbNDziugjPZsXyc=; b=KY84ElQB3g5+CtWCJMgA0xKce7366fni3KaBJeEymxomCevTh8bmfwHGUForH5eGhvAL9U UZ0DSqJBoO9eLFPoYuc+zLSBN+4XipnLiDi/uZ5JM6TbFl9j3T76m+WonJ2cVMhFVWj3oL L96GI+7zoV9ddku9VCZ3m4oJswhiZiM= Received: from mail-qk1-f200.google.com (mail-qk1-f200.google.com [209.85.222.200]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-179-a4dinS4SODqh_n8n9D_S3w-1; Wed, 12 Feb 2020 05:19:50 -0500 X-MC-Unique: a4dinS4SODqh_n8n9D_S3w-1 Received: by mail-qk1-f200.google.com with SMTP id n126so1009339qkc.18 for ; Wed, 12 Feb 2020 02:19:50 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:content-transfer-encoding :in-reply-to; bh=pkNV/KaDwN6AKmUOQ5xnMqy8J0aNzbNDziugjPZsXyc=; b=MciWl5MBnCL3TchHh6FoibU5wESka+9R7fZfU5EgVCrhKZqx11312gMuoAxv5UZX1W Xy36G5K/xf6exbUxobPcP1mQjBDc01n+0qWeqca+V4lVJItM98A0/ukStrcTg/QfxuII ImhrT/M/WynrpT1AJOO9TpISAXDq+iNCbA1YLnZ2/1+DmzUr98qPaOppJyg7mF2BbCoy 4Zc0ZpnpVOaRVKtzgtYbxCHZbfpA2e809Jb6BsVbTP7BA7RbmH5qQY2T3cCakNR7TDGs WV9rwFa+sqXeuHTPiHIJT5LTVYf5brtK0DVvSLnHK3vFs9ww6bKOLfeX0AmodG59tC/X CVHg== X-Gm-Message-State: APjAAAVzHVe4XQmrz7u1buv3eko8jflwwCz/dn1MYF4r+GzXWmdRjI1h ApeN5jVbutZjzPH9Of2/TExq1fVtAiD4Kl7vQCWTZ+KC8dvbRzw/HYcFhvFPX2erwAOYduh5Y1F BU/Wpg+RnSy4Jn5Ga X-Received: by 2002:ac8:498f:: with SMTP id f15mr6359535qtq.123.1581502789849; Wed, 12 Feb 2020 02:19:49 -0800 (PST) X-Google-Smtp-Source: APXvYqz8bIfk3B81LZ2B3XHLSDkzZ+2r6RRQancRdP1l7oFpUpC4EeBkeHbMVGxD5yYdqkLQc9G2DA== X-Received: by 2002:ac8:498f:: with SMTP id f15mr6359509qtq.123.1581502789462; Wed, 12 Feb 2020 02:19:49 -0800 (PST) Received: from redhat.com (bzq-79-176-41-183.red.bezeqint.net. [79.176.41.183]) by smtp.gmail.com with ESMTPSA id s6sm1435263qth.16.2020.02.12.02.19.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Feb 2020 02:19:48 -0800 (PST) Date: Wed, 12 Feb 2020 05:19:44 -0500 From: "Michael S. Tsirkin" To: Anton Ivanov Cc: netdev@vger.kernel.org, Jason Wang , linux-um@lists.infradead.org, virtualization@lists.linux-foundation.org Subject: Re: [PATCH] virtio: Work around frames incorrectly marked as gso Message-ID: <20200212051913-mutt-send-email-mst@kernel.org> References: <20191209104824.17059-1-anton.ivanov@cambridgegreys.com> <57230228-7030-c65f-a24f-910ca52bbe9e@cambridgegreys.com> <918222d9-816a-be70-f8af-b8dfcb586240@cambridgegreys.com> <20200211053502-mutt-send-email-mst@kernel.org> <8e730fe1-3129-de8d-bcb6-d5e10695238a@cambridgegreys.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <8e730fe1-3129-de8d-bcb6-d5e10695238a@cambridgegreys.com> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Wed, Feb 12, 2020 at 10:03:31AM +0000, Anton Ivanov wrote: > > > On 11/02/2020 10:37, Michael S. Tsirkin wrote: > > On Tue, Feb 11, 2020 at 07:42:37AM +0000, Anton Ivanov wrote: > > > On 11/02/2020 02:51, Jason Wang wrote: > > > > > > > > On 2020/2/11 上午12:55, Anton Ivanov wrote: > > > > > > > > > > > > > > > On 09/12/2019 10:48, anton.ivanov@cambridgegreys.com wrote: > > > > > > From: Anton Ivanov > > > > > > > > > > > > Some of the frames marked as GSO which arrive at > > > > > > virtio_net_hdr_from_skb() have no GSO_TYPE, no > > > > > > fragments (data_len = 0) and length significantly shorter > > > > > > than the MTU (752 in my experiments). > > > > > > > > > > > > This is observed on raw sockets reading off vEth interfaces > > > > > > in all 4.x and 5.x kernels I tested. > > > > > > > > > > > > These frames are reported as invalid while they are in fact > > > > > > gso-less frames. > > > > > > > > > > > > This patch marks the vnet header as no-GSO for them instead > > > > > > of reporting it as invalid. > > > > > > > > > > > > Signed-off-by: Anton Ivanov > > > > > > --- > > > > > >   include/linux/virtio_net.h | 8 ++++++-- > > > > > >   1 file changed, 6 insertions(+), 2 deletions(-) > > > > > > > > > > > > diff --git a/include/linux/virtio_net.h b/include/linux/virtio_net.h > > > > > > index 0d1fe9297ac6..d90d5cff1b9a 100644 > > > > > > --- a/include/linux/virtio_net.h > > > > > > +++ b/include/linux/virtio_net.h > > > > > > @@ -112,8 +112,12 @@ static inline int > > > > > > virtio_net_hdr_from_skb(const struct sk_buff *skb, > > > > > >               hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV4; > > > > > >           else if (sinfo->gso_type & SKB_GSO_TCPV6) > > > > > >               hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV6; > > > > > > -        else > > > > > > -            return -EINVAL; > > > > > > +        else { > > > > > > +            if (skb->data_len == 0) > > > > > > +                hdr->gso_type = VIRTIO_NET_HDR_GSO_NONE; > > > > > > +            else > > > > > > +                return -EINVAL; > > > > > > +        } > > > > > >           if (sinfo->gso_type & SKB_GSO_TCP_ECN) > > > > > >               hdr->gso_type |= VIRTIO_NET_HDR_GSO_ECN; > > > > > >       } else > > > > > > > > > > > > > > > > ping. > > > > > > > > > > > > > Do you mean gso_size is set but gso_type is not? Looks like a bug > > > > elsewhere. > > > > > > > > Thanks > > > > > > > > > > > Yes. > > > > > > I could not trace it where it is coming from. > > > > > > I see it when doing recvmmsg on raw sockets in the UML vector network > > > drivers. > > > > > > > I think we need to find the culprit and fix it there, lots of other things > > can break otherwise. > > Just printing out skb->dev->name should do the trick, no? > > I will rebuild my rig and retest (it's been a while since I worked on this bug). > > In theory, it should be veth - the test is over a vEth pair and all frames are locally originated by iperf. > > In practice - I will retest and post the results sometimes later today. > > Brgds, ok if it's veth then you need to add a similar printk patch to veth and re-run to see where does it come from originally. > > > > > > > > > -- > > > Anton R. Ivanov > > > Cambridgegreys Limited. Registered in England. Company Number 10273661 > > > https://www.cambridgegreys.com/ > > > > > > _______________________________________________ > > linux-um mailing list > > linux-um@lists.infradead.org > > http://lists.infradead.org/mailman/listinfo/linux-um > > > > -- > Anton R. Ivanov > Cambridgegreys Limited. Registered in England. Company Number 10273661 > https://www.cambridgegreys.com/ From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-2.mimecast.com ([205.139.110.61] helo=us-smtp-delivery-1.mimecast.com) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1j1p7y-0006yK-PA for linux-um@lists.infradead.org; Wed, 12 Feb 2020 10:20:19 +0000 Received: by mail-qk1-f197.google.com with SMTP id d134so1039621qkc.0 for ; Wed, 12 Feb 2020 02:19:51 -0800 (PST) Date: Wed, 12 Feb 2020 05:19:44 -0500 From: "Michael S. Tsirkin" Subject: Re: [PATCH] virtio: Work around frames incorrectly marked as gso Message-ID: <20200212051913-mutt-send-email-mst@kernel.org> References: <20191209104824.17059-1-anton.ivanov@cambridgegreys.com> <57230228-7030-c65f-a24f-910ca52bbe9e@cambridgegreys.com> <918222d9-816a-be70-f8af-b8dfcb586240@cambridgegreys.com> <20200211053502-mutt-send-email-mst@kernel.org> <8e730fe1-3129-de8d-bcb6-d5e10695238a@cambridgegreys.com> MIME-Version: 1.0 In-Reply-To: <8e730fe1-3129-de8d-bcb6-d5e10695238a@cambridgegreys.com> Content-Disposition: inline List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-um" Errors-To: linux-um-bounces+geert=linux-m68k.org@lists.infradead.org To: Anton Ivanov Cc: netdev@vger.kernel.org, Jason Wang , linux-um@lists.infradead.org, virtualization@lists.linux-foundation.org T24gV2VkLCBGZWIgMTIsIDIwMjAgYXQgMTA6MDM6MzFBTSArMDAwMCwgQW50b24gSXZhbm92IHdy b3RlOgo+IAo+IAo+IE9uIDExLzAyLzIwMjAgMTA6MzcsIE1pY2hhZWwgUy4gVHNpcmtpbiB3cm90 ZToKPiA+IE9uIFR1ZSwgRmViIDExLCAyMDIwIGF0IDA3OjQyOjM3QU0gKzAwMDAsIEFudG9uIEl2 YW5vdiB3cm90ZToKPiA+ID4gT24gMTEvMDIvMjAyMCAwMjo1MSwgSmFzb24gV2FuZyB3cm90ZToK PiA+ID4gPiAKPiA+ID4gPiBPbiAyMDIwLzIvMTEg5LiK5Y2IMTI6NTUsIEFudG9uIEl2YW5vdiB3 cm90ZToKPiA+ID4gPiA+IAo+ID4gPiA+ID4gCj4gPiA+ID4gPiBPbiAwOS8xMi8yMDE5IDEwOjQ4 LCBhbnRvbi5pdmFub3ZAY2FtYnJpZGdlZ3JleXMuY29tIHdyb3RlOgo+ID4gPiA+ID4gPiBGcm9t OiBBbnRvbiBJdmFub3YgPGFudG9uLml2YW5vdkBjYW1icmlkZ2VncmV5cy5jb20+Cj4gPiA+ID4g PiA+IAo+ID4gPiA+ID4gPiBTb21lIG9mIHRoZSBmcmFtZXMgbWFya2VkIGFzIEdTTyB3aGljaCBh cnJpdmUgYXQKPiA+ID4gPiA+ID4gdmlydGlvX25ldF9oZHJfZnJvbV9za2IoKSBoYXZlIG5vIEdT T19UWVBFLCBubwo+ID4gPiA+ID4gPiBmcmFnbWVudHMgKGRhdGFfbGVuID0gMCkgYW5kIGxlbmd0 aCBzaWduaWZpY2FudGx5IHNob3J0ZXIKPiA+ID4gPiA+ID4gdGhhbiB0aGUgTVRVICg3NTIgaW4g bXkgZXhwZXJpbWVudHMpLgo+ID4gPiA+ID4gPiAKPiA+ID4gPiA+ID4gVGhpcyBpcyBvYnNlcnZl ZCBvbiByYXcgc29ja2V0cyByZWFkaW5nIG9mZiB2RXRoIGludGVyZmFjZXMKPiA+ID4gPiA+ID4g aW4gYWxsIDQueCBhbmQgNS54IGtlcm5lbHMgSSB0ZXN0ZWQuCj4gPiA+ID4gPiA+IAo+ID4gPiA+ ID4gPiBUaGVzZSBmcmFtZXMgYXJlIHJlcG9ydGVkIGFzIGludmFsaWQgd2hpbGUgdGhleSBhcmUg aW4gZmFjdAo+ID4gPiA+ID4gPiBnc28tbGVzcyBmcmFtZXMuCj4gPiA+ID4gPiA+IAo+ID4gPiA+ ID4gPiBUaGlzIHBhdGNoIG1hcmtzIHRoZSB2bmV0IGhlYWRlciBhcyBuby1HU08gZm9yIHRoZW0g aW5zdGVhZAo+ID4gPiA+ID4gPiBvZiByZXBvcnRpbmcgaXQgYXMgaW52YWxpZC4KPiA+ID4gPiA+ ID4gCj4gPiA+ID4gPiA+IFNpZ25lZC1vZmYtYnk6IEFudG9uIEl2YW5vdiA8YW50b24uaXZhbm92 QGNhbWJyaWRnZWdyZXlzLmNvbT4KPiA+ID4gPiA+ID4gLS0tCj4gPiA+ID4gPiA+ICDCoCBpbmNs dWRlL2xpbnV4L3ZpcnRpb19uZXQuaCB8IDggKysrKysrLS0KPiA+ID4gPiA+ID4gIMKgIDEgZmls ZSBjaGFuZ2VkLCA2IGluc2VydGlvbnMoKyksIDIgZGVsZXRpb25zKC0pCj4gPiA+ID4gPiA+IAo+ ID4gPiA+ID4gPiBkaWZmIC0tZ2l0IGEvaW5jbHVkZS9saW51eC92aXJ0aW9fbmV0LmggYi9pbmNs dWRlL2xpbnV4L3ZpcnRpb19uZXQuaAo+ID4gPiA+ID4gPiBpbmRleCAwZDFmZTkyOTdhYzYuLmQ5 MGQ1Y2ZmMWI5YSAxMDA2NDQKPiA+ID4gPiA+ID4gLS0tIGEvaW5jbHVkZS9saW51eC92aXJ0aW9f bmV0LmgKPiA+ID4gPiA+ID4gKysrIGIvaW5jbHVkZS9saW51eC92aXJ0aW9fbmV0LmgKPiA+ID4g PiA+ID4gQEAgLTExMiw4ICsxMTIsMTIgQEAgc3RhdGljIGlubGluZSBpbnQKPiA+ID4gPiA+ID4g dmlydGlvX25ldF9oZHJfZnJvbV9za2IoY29uc3Qgc3RydWN0IHNrX2J1ZmYgKnNrYiwKPiA+ID4g PiA+ID4gIMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgIGhkci0+Z3NvX3R5cGUgPSBWSVJUSU9f TkVUX0hEUl9HU09fVENQVjQ7Cj4gPiA+ID4gPiA+ICDCoMKgwqDCoMKgwqDCoMKgwqAgZWxzZSBp ZiAoc2luZm8tPmdzb190eXBlICYgU0tCX0dTT19UQ1BWNikKPiA+ID4gPiA+ID4gIMKgwqDCoMKg wqDCoMKgwqDCoMKgwqDCoMKgIGhkci0+Z3NvX3R5cGUgPSBWSVJUSU9fTkVUX0hEUl9HU09fVENQ VjY7Cj4gPiA+ID4gPiA+IC3CoMKgwqDCoMKgwqDCoCBlbHNlCj4gPiA+ID4gPiA+IC3CoMKgwqDC oMKgwqDCoMKgwqDCoMKgIHJldHVybiAtRUlOVkFMOwo+ID4gPiA+ID4gPiArwqDCoMKgwqDCoMKg wqAgZWxzZSB7Cj4gPiA+ID4gPiA+ICvCoMKgwqDCoMKgwqDCoMKgwqDCoMKgIGlmIChza2ItPmRh dGFfbGVuID09IDApCj4gPiA+ID4gPiA+ICvCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAg aGRyLT5nc29fdHlwZSA9IFZJUlRJT19ORVRfSERSX0dTT19OT05FOwo+ID4gPiA+ID4gPiArwqDC oMKgwqDCoMKgwqDCoMKgwqDCoCBlbHNlCj4gPiA+ID4gPiA+ICvCoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoMKgwqAgcmV0dXJuIC1FSU5WQUw7Cj4gPiA+ID4gPiA+ICvCoMKgwqDCoMKgwqDCoCB9 Cj4gPiA+ID4gPiA+ICDCoMKgwqDCoMKgwqDCoMKgwqAgaWYgKHNpbmZvLT5nc29fdHlwZSAmIFNL Ql9HU09fVENQX0VDTikKPiA+ID4gPiA+ID4gIMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgIGhk ci0+Z3NvX3R5cGUgfD0gVklSVElPX05FVF9IRFJfR1NPX0VDTjsKPiA+ID4gPiA+ID4gIMKgwqDC oMKgwqAgfSBlbHNlCj4gPiA+ID4gPiA+IAo+ID4gPiA+ID4gCj4gPiA+ID4gPiBwaW5nLgo+ID4g PiA+ID4gCj4gPiA+ID4gCj4gPiA+ID4gRG8geW91IG1lYW4gZ3NvX3NpemUgaXMgc2V0IGJ1dCBn c29fdHlwZSBpcyBub3Q/IExvb2tzIGxpa2UgYSBidWcKPiA+ID4gPiBlbHNld2hlcmUuCj4gPiA+ ID4gCj4gPiA+ID4gVGhhbmtzCj4gPiA+ID4gCj4gPiA+ID4gCj4gPiA+IFllcy4KPiA+ID4gCj4g PiA+IEkgY291bGQgbm90IHRyYWNlIGl0IHdoZXJlIGl0IGlzIGNvbWluZyBmcm9tLgo+ID4gPiAK PiA+ID4gSSBzZWUgaXQgd2hlbiBkb2luZyByZWN2bW1zZyBvbiByYXcgc29ja2V0cyBpbiB0aGUg VU1MIHZlY3RvciBuZXR3b3JrCj4gPiA+IGRyaXZlcnMuCj4gPiA+IAo+ID4gCj4gPiBJIHRoaW5r IHdlIG5lZWQgdG8gZmluZCB0aGUgY3VscHJpdCBhbmQgZml4IGl0IHRoZXJlLCBsb3RzIG9mIG90 aGVyIHRoaW5ncwo+ID4gY2FuIGJyZWFrIG90aGVyd2lzZS4KPiA+IEp1c3QgcHJpbnRpbmcgb3V0 IHNrYi0+ZGV2LT5uYW1lIHNob3VsZCBkbyB0aGUgdHJpY2ssIG5vPwo+IAo+IEkgd2lsbCByZWJ1 aWxkIG15IHJpZyBhbmQgcmV0ZXN0IChpdCdzIGJlZW4gYSB3aGlsZSBzaW5jZSBJIHdvcmtlZCBv biB0aGlzIGJ1ZykuCj4gCj4gSW4gdGhlb3J5LCBpdCBzaG91bGQgYmUgdmV0aCAtIHRoZSB0ZXN0 IGlzIG92ZXIgYSB2RXRoIHBhaXIgYW5kIGFsbCBmcmFtZXMgYXJlIGxvY2FsbHkgb3JpZ2luYXRl ZCBieSBpcGVyZi4KPiAKPiBJbiBwcmFjdGljZSAtIEkgd2lsbCByZXRlc3QgYW5kIHBvc3QgdGhl IHJlc3VsdHMgc29tZXRpbWVzIGxhdGVyIHRvZGF5Lgo+IAo+IEJyZ2RzLAoKCm9rIGlmIGl0J3Mg dmV0aCB0aGVuIHlvdSBuZWVkIHRvIGFkZCBhIHNpbWlsYXIgcHJpbnRrIHBhdGNoIHRvIHZldGgK YW5kIHJlLXJ1biB0byBzZWUgd2hlcmUgZG9lcyBpdCBjb21lIGZyb20gb3JpZ2luYWxseS4KCj4g Pgo+ID4gCj4gPiAKPiA+ID4gLS0gCj4gPiA+IEFudG9uIFIuIEl2YW5vdgo+ID4gPiBDYW1icmlk Z2VncmV5cyBMaW1pdGVkLiBSZWdpc3RlcmVkIGluIEVuZ2xhbmQuIENvbXBhbnkgTnVtYmVyIDEw MjczNjYxCj4gPiA+IGh0dHBzOi8vd3d3LmNhbWJyaWRnZWdyZXlzLmNvbS8KPiA+IAo+ID4gCj4g PiBfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwo+ID4gbGlu dXgtdW0gbWFpbGluZyBsaXN0Cj4gPiBsaW51eC11bUBsaXN0cy5pbmZyYWRlYWQub3JnCj4gPiBo dHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LXVtCj4gPiAK PiAKPiAtLSAKPiBBbnRvbiBSLiBJdmFub3YKPiBDYW1icmlkZ2VncmV5cyBMaW1pdGVkLiBSZWdp c3RlcmVkIGluIEVuZ2xhbmQuIENvbXBhbnkgTnVtYmVyIDEwMjczNjYxCj4gaHR0cHM6Ly93d3cu Y2FtYnJpZGdlZ3JleXMuY29tLwoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fCmxpbnV4LXVtIG1haWxpbmcgbGlzdApsaW51eC11bUBsaXN0cy5pbmZyYWRl YWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgt dW0K