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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 C6C4DC352A2 for ; Fri, 7 Feb 2020 11:39:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A26F7214AF for ; Fri, 7 Feb 2020 11:39:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726890AbgBGLjJ convert rfc822-to-8bit (ORCPT ); Fri, 7 Feb 2020 06:39:09 -0500 Received: from Galois.linutronix.de ([193.142.43.55]:40120 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726798AbgBGLjI (ORCPT ); Fri, 7 Feb 2020 06:39:08 -0500 Received: from p5b06da22.dip0.t-ipconnect.de ([91.6.218.34] helo=nanos.tec.linutronix.de) by Galois.linutronix.de with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1j01xc-000288-1g; Fri, 07 Feb 2020 12:38:12 +0100 Received: by nanos.tec.linutronix.de (Postfix, from userid 1000) id 7CCA5100375; Fri, 7 Feb 2020 11:38:11 +0000 (GMT) From: Thomas Gleixner To: Alexey Budankov , Stephen Smalley , Serge Hallyn , James Morris Cc: Alexei Starovoitov , Peter Zijlstra , Arnaldo Carvalho de Melo , Ingo Molnar , "jani.nikula\@linux.intel.com" , "joonas.lahtinen\@linux.intel.com" , "rodrigo.vivi\@intel.com" , "benh\@kernel.crashing.org" , Paul Mackerras , Michael Ellerman , Will Deacon , Mark Rutland , Robert Richter , Alexei Starovoitov , Jiri Olsa , Andi Kleen , Stephane Eranian , Igor Lubashev , Alexander Shishkin , Namhyung Kim , Song Liu , Lionel Landwerlin , linux-kernel , "linux-security-module\@vger.kernel.org" , "selinux\@vger.kernel.org" , "intel-gfx\@lists.freedesktop.org" , "linux-parisc\@vger.kernel.org" , "linuxppc-dev\@lists.ozlabs.org" , linux-arm-kernel , "linux-perf-users\@vger.kernel.org" , oprofile-list@lists.sf.net, Andy Lutomirski Subject: Re: [PATCH v5 01/10] capabilities: introduce CAP_PERFMON to kernel and user space In-Reply-To: <2b608e26-354b-3df9-aea9-58e56dc0c5e5@linux.intel.com> Date: Fri, 07 Feb 2020 11:38:11 +0000 Message-ID: <875zgizkyk.fsf@nanos.tec.linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8BIT X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-parisc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org Alexey Budankov writes: > On 22.01.2020 17:25, Alexey Budankov wrote: >> On 22.01.2020 17:07, Stephen Smalley wrote: >>>> It keeps the implementation simple and readable. The implementation is more >>>> performant in the sense of calling the API - one capable() call for CAP_PERFMON >>>> privileged process. >>>> >>>> Yes, it bloats audit log for CAP_SYS_ADMIN privileged and unprivileged processes, >>>> but this bloating also advertises and leverages using more secure CAP_PERFMON >>>> based approach to use perf_event_open system call. >>> >>> I can live with that.  We just need to document that when you see >>> both a CAP_PERFMON and a CAP_SYS_ADMIN audit message for a process, >>> try only allowing CAP_PERFMON first and see if that resolves the >>> issue.  We have a similar issue with CAP_DAC_READ_SEARCH versus >>> CAP_DAC_OVERRIDE. >> >> perf security [1] document can be updated, at least, to align and document >> this audit logging specifics. > > And I plan to update the document right after this patch set is accepted. > Feel free to let me know of the places in the kernel docs that also > require update w.r.t CAP_PERFMON extension. The documentation update wants be part of the patch set and not planned to be done _after_ the patch set is merged. Thanks, tglx From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Gleixner Subject: Re: [PATCH v5 01/10] capabilities: introduce CAP_PERFMON to kernel and user space Date: Fri, 07 Feb 2020 11:38:11 +0000 Message-ID: <875zgizkyk.fsf@nanos.tec.linutronix.de> References: <2b608e26-354b-3df9-aea9-58e56dc0c5e5@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <2b608e26-354b-3df9-aea9-58e56dc0c5e5@linux.intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane-mx.org@lists.infradead.org To: Alexey Budankov , Stephen Smalley , Serge Hallyn , James Morris Cc: Mark Rutland , Song Liu , Peter Zijlstra , "benh@kernel.crashing.org" , "joonas.lahtinen@linux.intel.com" , Will Deacon , Alexei Starovoitov , Lionel Landwerlin , Paul Mackerras , Jiri Olsa , Alexei Starovoitov , Andi Kleen , Michael Ellerman , Igor Lubashev , Alexander Shishkin , Ingo Molnar , oprofile-list@lists.sf.net, linux-arm-kernel , Robert Richter , "selinux@vger.kernel.org" "intel-gfx@lists.freedesktop.org" List-Id: linux-perf-users.vger.kernel.org QWxleGV5IEJ1ZGFua292IDxhbGV4ZXkuYnVkYW5rb3ZAbGludXguaW50ZWwuY29tPiB3cml0ZXM6 Cj4gT24gMjIuMDEuMjAyMCAxNzoyNSwgQWxleGV5IEJ1ZGFua292IHdyb3RlOgo+PiBPbiAyMi4w MS4yMDIwIDE3OjA3LCBTdGVwaGVuIFNtYWxsZXkgd3JvdGU6Cj4+Pj4gSXQga2VlcHMgdGhlIGlt cGxlbWVudGF0aW9uIHNpbXBsZSBhbmQgcmVhZGFibGUuIFRoZSBpbXBsZW1lbnRhdGlvbiBpcyBt b3JlCj4+Pj4gcGVyZm9ybWFudCBpbiB0aGUgc2Vuc2Ugb2YgY2FsbGluZyB0aGUgQVBJIC0gb25l IGNhcGFibGUoKSBjYWxsIGZvciBDQVBfUEVSRk1PTgo+Pj4+IHByaXZpbGVnZWQgcHJvY2Vzcy4K Pj4+Pgo+Pj4+IFllcywgaXQgYmxvYXRzIGF1ZGl0IGxvZyBmb3IgQ0FQX1NZU19BRE1JTiBwcml2 aWxlZ2VkIGFuZCB1bnByaXZpbGVnZWQgcHJvY2Vzc2VzLAo+Pj4+IGJ1dCB0aGlzIGJsb2F0aW5n IGFsc28gYWR2ZXJ0aXNlcyBhbmQgbGV2ZXJhZ2VzIHVzaW5nIG1vcmUgc2VjdXJlIENBUF9QRVJG TU9OCj4+Pj4gYmFzZWQgYXBwcm9hY2ggdG8gdXNlIHBlcmZfZXZlbnRfb3BlbiBzeXN0ZW0gY2Fs bC4KPj4+Cj4+PiBJIGNhbiBsaXZlIHdpdGggdGhhdC7CoCBXZSBqdXN0IG5lZWQgdG8gZG9jdW1l bnQgdGhhdCB3aGVuIHlvdSBzZWUKPj4+IGJvdGggYSBDQVBfUEVSRk1PTiBhbmQgYSBDQVBfU1lT X0FETUlOIGF1ZGl0IG1lc3NhZ2UgZm9yIGEgcHJvY2VzcywKPj4+IHRyeSBvbmx5IGFsbG93aW5n IENBUF9QRVJGTU9OIGZpcnN0IGFuZCBzZWUgaWYgdGhhdCByZXNvbHZlcyB0aGUKPj4+IGlzc3Vl LsKgIFdlIGhhdmUgYSBzaW1pbGFyIGlzc3VlIHdpdGggQ0FQX0RBQ19SRUFEX1NFQVJDSCB2ZXJz dXMKPj4+IENBUF9EQUNfT1ZFUlJJREUuCj4+IAo+PiBwZXJmIHNlY3VyaXR5IFsxXSBkb2N1bWVu dCBjYW4gYmUgdXBkYXRlZCwgYXQgbGVhc3QsIHRvIGFsaWduIGFuZCBkb2N1bWVudCAKPj4gdGhp cyBhdWRpdCBsb2dnaW5nIHNwZWNpZmljcy4KPgo+IEFuZCBJIHBsYW4gdG8gdXBkYXRlIHRoZSBk b2N1bWVudCByaWdodCBhZnRlciB0aGlzIHBhdGNoIHNldCBpcyBhY2NlcHRlZC4KPiBGZWVsIGZy ZWUgdG8gbGV0IG1lIGtub3cgb2YgdGhlIHBsYWNlcyBpbiB0aGUga2VybmVsIGRvY3MgdGhhdCBh bHNvCj4gcmVxdWlyZSB1cGRhdGUgdy5yLnQgQ0FQX1BFUkZNT04gZXh0ZW5zaW9uLgoKVGhlIGRv Y3VtZW50YXRpb24gdXBkYXRlIHdhbnRzIGJlIHBhcnQgb2YgdGhlIHBhdGNoIHNldCBhbmQgbm90 IHBsYW5uZWQKdG8gYmUgZG9uZSBfYWZ0ZXJfIHRoZSBwYXRjaCBzZXQgaXMgbWVyZ2VkLgoKVGhh bmtzLAoKICAgICAgICB0Z2x4CgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fXwpsaW51eC1hcm0ta2VybmVsIG1haWxpbmcgbGlzdApsaW51eC1hcm0ta2VybmVs QGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9s aXN0aW5mby9saW51eC1hcm0ta2VybmVsCg== 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=-0.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 223DDC352A2 for ; 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dmarc=none (p=none dis=none) header.from=linutronix.de Received: from Galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) (using TLSv1.2 with cipher DHE-RSA-AES256-SHA256 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 48DYGj5SBLzDqfC for ; Fri, 7 Feb 2020 22:38:53 +1100 (AEDT) Received: from p5b06da22.dip0.t-ipconnect.de ([91.6.218.34] helo=nanos.tec.linutronix.de) by Galois.linutronix.de with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1j01xc-000288-1g; Fri, 07 Feb 2020 12:38:12 +0100 Received: by nanos.tec.linutronix.de (Postfix, from userid 1000) id 7CCA5100375; Fri, 7 Feb 2020 11:38:11 +0000 (GMT) From: Thomas Gleixner To: Alexey Budankov , Stephen Smalley , Serge Hallyn , James Morris Subject: Re: [PATCH v5 01/10] capabilities: introduce CAP_PERFMON to kernel and user space In-Reply-To: <2b608e26-354b-3df9-aea9-58e56dc0c5e5@linux.intel.com> Date: Fri, 07 Feb 2020 11:38:11 +0000 Message-ID: <875zgizkyk.fsf@nanos.tec.linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1, SHORTCIRCUIT=-0.0001 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Song Liu , Peter Zijlstra , "joonas.lahtinen@linux.intel.com" , Will Deacon , Alexei Starovoitov , Lionel Landwerlin , Paul Mackerras , Jiri Olsa , Alexei Starovoitov , Andi Kleen , Igor Lubashev , Alexander Shishkin , Ingo Molnar , oprofile-list@lists.sf.net, linux-arm-kernel , Robert Richter , "selinux@vger.kernel.org" , "intel-gfx@lists.freedesktop.org" , "jani.nikula@linux.intel.com" , Arnaldo Carvalho de Melo , "rodrigo.vivi@intel.com" , Namhyung Kim , Stephane Eranian , "linux-parisc@vger.kernel.org" , linux-kernel , Andy Lutomirski , "linux-perf-users@vger.kernel.org" , "linux-security-module@vger.kernel.org" , "linuxppc-dev@lists.ozlabs.org" Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Alexey Budankov writes: > On 22.01.2020 17:25, Alexey Budankov wrote: >> On 22.01.2020 17:07, Stephen Smalley wrote: >>>> It keeps the implementation simple and readable. The implementation is= more >>>> performant in the sense of calling the API - one capable() call for CA= P_PERFMON >>>> privileged process. >>>> >>>> Yes, it bloats audit log for CAP_SYS_ADMIN privileged and unprivileged= processes, >>>> but this bloating also advertises and leverages using more secure CAP_= PERFMON >>>> based approach to use perf_event_open system call. >>> >>> I can live with that.=C2=A0 We just need to document that when you see >>> both a CAP_PERFMON and a CAP_SYS_ADMIN audit message for a process, >>> try only allowing CAP_PERFMON first and see if that resolves the >>> issue.=C2=A0 We have a similar issue with CAP_DAC_READ_SEARCH versus >>> CAP_DAC_OVERRIDE. >>=20 >> perf security [1] document can be updated, at least, to align and docume= nt=20 >> this audit logging specifics. > > And I plan to update the document right after this patch set is accepted. > Feel free to let me know of the places in the kernel docs that also > require update w.r.t CAP_PERFMON extension. The documentation update wants be part of the patch set and not planned to be done _after_ the patch set is merged. Thanks, tglx 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=-0.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 F1B32C352A2 for ; Fri, 7 Feb 2020 11:39:01 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 B133320720 for ; Fri, 7 Feb 2020 11:39:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Edcxs0Qs" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B133320720 Authentication-Results: mail.kernel.org; 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Fri, 07 Feb 2020 12:38:12 +0100 Received: by nanos.tec.linutronix.de (Postfix, from userid 1000) id 7CCA5100375; Fri, 7 Feb 2020 11:38:11 +0000 (GMT) From: Thomas Gleixner To: Alexey Budankov , Stephen Smalley , Serge Hallyn , James Morris In-Reply-To: <2b608e26-354b-3df9-aea9-58e56dc0c5e5@linux.intel.com> Date: Fri, 07 Feb 2020 11:38:11 +0000 Message-ID: <875zgizkyk.fsf@nanos.tec.linutronix.de> MIME-Version: 1.0 X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1, SHORTCIRCUIT=-0.0001 Subject: Re: [Intel-gfx] [PATCH v5 01/10] capabilities: introduce CAP_PERFMON to kernel and user space X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Song Liu , Peter Zijlstra , "benh@kernel.crashing.org" , Will Deacon , Alexei Starovoitov , Paul Mackerras , Jiri Olsa , Alexei Starovoitov , Andi Kleen , Michael Ellerman , Igor Lubashev , Alexander Shishkin , Ingo Molnar , oprofile-list@lists.sf.net, linux-arm-kernel , Robert Richter , "selinux@vger.kernel.org" , "intel-gfx@lists.freedesktop.org" , Arnaldo Carvalho de Melo , Namhyung Kim , Stephane Eranian , "linux-parisc@vger.kernel.org" , linux-kernel , Andy Lutomirski , "linux-perf-users@vger.kernel.org" , "linux-security-module@vger.kernel.org" , "linuxppc-dev@lists.ozlabs.org" Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" QWxleGV5IEJ1ZGFua292IDxhbGV4ZXkuYnVkYW5rb3ZAbGludXguaW50ZWwuY29tPiB3cml0ZXM6 Cj4gT24gMjIuMDEuMjAyMCAxNzoyNSwgQWxleGV5IEJ1ZGFua292IHdyb3RlOgo+PiBPbiAyMi4w MS4yMDIwIDE3OjA3LCBTdGVwaGVuIFNtYWxsZXkgd3JvdGU6Cj4+Pj4gSXQga2VlcHMgdGhlIGlt cGxlbWVudGF0aW9uIHNpbXBsZSBhbmQgcmVhZGFibGUuIFRoZSBpbXBsZW1lbnRhdGlvbiBpcyBt b3JlCj4+Pj4gcGVyZm9ybWFudCBpbiB0aGUgc2Vuc2Ugb2YgY2FsbGluZyB0aGUgQVBJIC0gb25l IGNhcGFibGUoKSBjYWxsIGZvciBDQVBfUEVSRk1PTgo+Pj4+IHByaXZpbGVnZWQgcHJvY2Vzcy4K Pj4+Pgo+Pj4+IFllcywgaXQgYmxvYXRzIGF1ZGl0IGxvZyBmb3IgQ0FQX1NZU19BRE1JTiBwcml2 aWxlZ2VkIGFuZCB1bnByaXZpbGVnZWQgcHJvY2Vzc2VzLAo+Pj4+IGJ1dCB0aGlzIGJsb2F0aW5n IGFsc28gYWR2ZXJ0aXNlcyBhbmQgbGV2ZXJhZ2VzIHVzaW5nIG1vcmUgc2VjdXJlIENBUF9QRVJG TU9OCj4+Pj4gYmFzZWQgYXBwcm9hY2ggdG8gdXNlIHBlcmZfZXZlbnRfb3BlbiBzeXN0ZW0gY2Fs bC4KPj4+Cj4+PiBJIGNhbiBsaXZlIHdpdGggdGhhdC7CoCBXZSBqdXN0IG5lZWQgdG8gZG9jdW1l bnQgdGhhdCB3aGVuIHlvdSBzZWUKPj4+IGJvdGggYSBDQVBfUEVSRk1PTiBhbmQgYSBDQVBfU1lT X0FETUlOIGF1ZGl0IG1lc3NhZ2UgZm9yIGEgcHJvY2VzcywKPj4+IHRyeSBvbmx5IGFsbG93aW5n IENBUF9QRVJGTU9OIGZpcnN0IGFuZCBzZWUgaWYgdGhhdCByZXNvbHZlcyB0aGUKPj4+IGlzc3Vl LsKgIFdlIGhhdmUgYSBzaW1pbGFyIGlzc3VlIHdpdGggQ0FQX0RBQ19SRUFEX1NFQVJDSCB2ZXJz dXMKPj4+IENBUF9EQUNfT1ZFUlJJREUuCj4+IAo+PiBwZXJmIHNlY3VyaXR5IFsxXSBkb2N1bWVu dCBjYW4gYmUgdXBkYXRlZCwgYXQgbGVhc3QsIHRvIGFsaWduIGFuZCBkb2N1bWVudCAKPj4gdGhp cyBhdWRpdCBsb2dnaW5nIHNwZWNpZmljcy4KPgo+IEFuZCBJIHBsYW4gdG8gdXBkYXRlIHRoZSBk b2N1bWVudCByaWdodCBhZnRlciB0aGlzIHBhdGNoIHNldCBpcyBhY2NlcHRlZC4KPiBGZWVsIGZy ZWUgdG8gbGV0IG1lIGtub3cgb2YgdGhlIHBsYWNlcyBpbiB0aGUga2VybmVsIGRvY3MgdGhhdCBh bHNvCj4gcmVxdWlyZSB1cGRhdGUgdy5yLnQgQ0FQX1BFUkZNT04gZXh0ZW5zaW9uLgoKVGhlIGRv Y3VtZW50YXRpb24gdXBkYXRlIHdhbnRzIGJlIHBhcnQgb2YgdGhlIHBhdGNoIHNldCBhbmQgbm90 IHBsYW5uZWQKdG8gYmUgZG9uZSBfYWZ0ZXJfIHRoZSBwYXRjaCBzZXQgaXMgbWVyZ2VkLgoKVGhh bmtzLAoKICAgICAgICB0Z2x4Cl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fCkludGVsLWdmeCBtYWlsaW5nIGxpc3QKSW50ZWwtZ2Z4QGxpc3RzLmZyZWVkZXNr dG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2lu dGVsLWdmeAo=