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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B64DEC433EF for ; Wed, 16 Feb 2022 08:48:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231675AbiBPItH (ORCPT ); Wed, 16 Feb 2022 03:49:07 -0500 Received: from gmail-smtp-in.l.google.com ([23.128.96.19]:56572 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231726AbiBPItD (ORCPT ); Wed, 16 Feb 2022 03:49:03 -0500 Received: from eu-smtp-delivery-151.mimecast.com (eu-smtp-delivery-151.mimecast.com [185.58.85.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 460112A8D29 for ; Wed, 16 Feb 2022 00:48:51 -0800 (PST) Received: from AcuMS.aculab.com (156.67.243.121 [156.67.243.121]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id uk-mta-34-IdaZJxN6M-y3QY1MjOo6oA-1; Wed, 16 Feb 2022 08:48:47 +0000 X-MC-Unique: IdaZJxN6M-y3QY1MjOo6oA-1 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) by AcuMS.aculab.com (fd9f:af1c:a25b:0:994c:f5c2:35d6:9b65) with Microsoft SMTP Server (TLS) id 15.0.1497.28; Wed, 16 Feb 2022 08:48:46 +0000 Received: from AcuMS.Aculab.com ([fe80::994c:f5c2:35d6:9b65]) by AcuMS.aculab.com ([fe80::994c:f5c2:35d6:9b65%12]) with mapi id 15.00.1497.028; Wed, 16 Feb 2022 08:48:46 +0000 From: David Laight To: 'Yonghong Song' , Shung-Hsi Yu CC: Alexei Starovoitov , Connor O'Brien , =?utf-8?B?TWljaGFsIFN1Y2jDoW5law==?= , bpf , Network Development , Andrii Nakryiko , "Daniel Borkmann" , Alexei Starovoitov Subject: RE: BTF compatibility issue across builds Thread-Topic: BTF compatibility issue across builds Thread-Index: AQHYIpQ9o1wIZcx0Hk+HXDOO4VHmbayV3j7w Date: Wed, 16 Feb 2022 08:48:46 +0000 Message-ID: <634a6042dc76479bb12d6084ffe36f62@AcuMS.aculab.com> References: <8d17226b-730f-5426-b1cc-99fe43483ed1@fb.com> <20220210100153.GA90679@kunlun.suse.cz> <992ae1d2-0b26-3417-9c6b-132c8fcca0ad@fb.com> <8a520fa1-9a61-c21d-f2c4-d5ba8d1b9c19@fb.com> <0867c12a-9aa3-418d-9102-3103cb784e99@fb.com> In-Reply-To: <0867c12a-9aa3-418d-9102-3103cb784e99@fb.com> Accept-Language: en-GB, en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=C51A453 smtp.mailfrom=david.laight@aculab.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org RnJvbTogWW9uZ2hvbmcgU29uZw0KPiBTZW50OiAxNSBGZWJydWFyeSAyMDIyIDE3OjQ3DQouLi4N Cj4gPiBMZXQgbWUgdHJ5IHRha2UgYSBqYWIgYXQgaXQuIFNheSBoZXJlJ3MgYSBoeXBvdGhldGlj YWwgQlRGIGZvciBhIGtlcm5lbA0KPiA+IG1vZHVsZSB3aGljaCBvbmx5IHR5cGUgaW5mb3JtYXRp b24gZm9yIGBzdHJ1Y3Qgc29tZXRoaW5nICpgOg0KPiA+DQo+ID4gICAgWzVdIFBUUiAnKGFub24p JyB0eXBlX2lkPTQNCj4gPg0KPiA+IFdoaWNoIGlzIGJ1aWx0IHVwb24gdGhlIGZvbGxvdyBiYXNl IEJURjoNCj4gPg0KPiA+ICAgIFsxXSBJTlQgJ3Vuc2lnbmVkIGNoYXInIHNpemU9MSBiaXRzX29m ZnNldD0wIG5yX2JpdHM9OCBlbmNvZGluZz0obm9uZSkNCj4gPiAgICBbMl0gUFRSICcoYW5vbikn IHR5cGVfaWQ9Mw0KPiA+ICAgIFszXSBTVFJVQ1QgJ2xpc3RfaGVhZCcgc2l6ZT0xNiB2bGVuPTIN Cj4gPiAgICAgICAgICAnbmV4dCcgdHlwZV9pZD0yIGJpdHNfb2Zmc2V0PTANCj4gPiAgICAgICAg ICAncHJldicgdHlwZV9pZD0yIGJpdHNfb2Zmc2V0PTY0DQo+ID4gICAgWzRdIFNUUlVDVCAnc29t ZXRoaW5nJyBzaXplPTIgdmxlbj0yDQo+ID4gICAgICAgICAgJ2xvY2tlZCcgdHlwZV9pZD0xIGJp dHNfb2Zmc2V0PTANCj4gPiAgICAgICAgICAncGVuZGluZycgdHlwZV9pZD0xIGJpdHNfb2Zmc2V0 PTgNCj4gPg0KPiA+IER1ZSB0byB0aGUgc2l0dWF0aW9uIG1lbnRpb25lZCBpbiB0aGUgYmVnaW5u aW5nIG9mIHRoZSB0aHJlYWQsIHRoZSAqcnVudGltZSoNCj4gPiBrZXJuZWwgaGF2ZSBhIGRpZmZl cmVudCBiYXNlIEJURiwgaW4gdGhpcyBjYXNlIHR5cGUgSURzIGFyZSBvZmZzZXQgYnkgMSBkdWUN Cj4gPiB0byBhbiBhZGRpdGlvbmFsIHR5cGVkZWYgZW50cnk6DQo+ID4NCj4gPiAgICBbMV0gVFlQ RURFRiAndTgnIHR5cGVfaWQ9MQ0KPiA+ICAgIFsyXSBJTlQgJ3Vuc2lnbmVkIGNoYXInIHNpemU9 MSBiaXRzX29mZnNldD0wIG5yX2JpdHM9OCBlbmNvZGluZz0obm9uZSkNCj4gPiAgICBbM10gUFRS ICcoYW5vbiknIHR5cGVfaWQ9Mw0KPiA+ICAgIFs0XSBTVFJVQ1QgJ2xpc3RfaGVhZCcgc2l6ZT0x NiB2bGVuPTINCj4gPiAgICAgICAgICAnbmV4dCcgdHlwZV9pZD0yIGJpdHNfb2Zmc2V0PTANCj4g PiAgICAgICAgICAncHJldicgdHlwZV9pZD0yIGJpdHNfb2Zmc2V0PTY0DQo+ID4gICAgWzVdIFNU UlVDVCAnc29tZXRoaW5nJyBzaXplPTIgdmxlbj0yDQo+ID4gICAgICAgICAgJ2xvY2tlZCcgdHlw ZV9pZD0xIGJpdHNfb2Zmc2V0PTANCj4gPiAgICAgICAgICAncGVuZGluZycgdHlwZV9pZD0xIGJp dHNfb2Zmc2V0PTgNCj4gPg0KPiA+IFRoZW4gd2hlbiBsb2FkaW5nIHRoZSBCVEYgb24ga2VybmVs IG1vZHVsZSBvbiB0aGUgcnVudGltZSwgdGhlIGtlcm5lbCB3aWxsDQo+ID4gbWlzdGFrZW5seSBp bnRlcnByZXRzICJQVFIgJyhhbm9uKScgdHlwZV9pZD00IiBhcyBgc3RydWN0IGxpc3RfaGVhZCAq YA0KPiA+IHJhdGhlciB0aGFuIGBzdHJ1Y3Qgc29tZXRoaW5nICpgLg0KPiA+DQo+ID4gRG9lcyB0 aGlzIHNob3VsZCBwb3NzaWJsZT8gKGF0IGxlYXN0IHRoZW9yZXRpY2FsbHkpDQo+IA0KPiBUaGFu a3MgZm9yIGV4cGxhbmF0aW9uLiBZZXMsIGZyb20gQlRGIHR5cGUgcmVzb2x1dGlvbiBwb2ludCBv ZiB2aWV3LA0KPiB5ZXMgaXQgaXMgcG9zc2libGUuDQoNClRoaXMgbG9va3Mgc28gbXVjaCBsaWtl IHRoZSBvbGQgJ3NoYXJlZCBsaWJyYXJ5IGZ1bmN0aW9uIG51bWJlcicNCm9yZGluYWxzIGZyb20g cHJlLVNZU1YgYW5kIGVhcmx5IHdpbmRvd3Mgc2hhcmVkIGxpYnJhcmllcy4NClRoZXJlIGlzIGEg Z29vZCByZWFzb24gd2h5IGl0IGlzbid0IGRvbmUgdGhhdCB3YXkgYW55IG1vcmUuDQoNCkhhcyBz b21lb25lIHJlLWludmVudGVkIHRoZSBzcXVhcmUgd2hlZWw/Pw0KDQoJRGF2aWQNCg0KLQ0KUmVn aXN0ZXJlZCBBZGRyZXNzIExha2VzaWRlLCBCcmFtbGV5IFJvYWQsIE1vdW50IEZhcm0sIE1pbHRv biBLZXluZXMsIE1LMSAxUFQsIFVLDQpSZWdpc3RyYXRpb24gTm86IDEzOTczODYgKFdhbGVzKQ0K