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[2620:137:e000::1:20]) by mx.google.com with ESMTP id i14-20020aa78d8e000000b0054342bb20e2si644597pfr.66.2022.11.17.03.34.32; Thu, 17 Nov 2022 03:34:43 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@alien8.de header.s=dkim header.b=Jg6+fCBZ; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alien8.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234648AbiKQKk2 (ORCPT + 91 others); Thu, 17 Nov 2022 05:40:28 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36590 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231634AbiKQKkY (ORCPT ); Thu, 17 Nov 2022 05:40:24 -0500 Received: from mail.skyhub.de (mail.skyhub.de [IPv6:2a01:4f8:190:11c2::b:1457]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C09411D4 for ; Thu, 17 Nov 2022 02:40:20 -0800 (PST) Received: from zn.tnic (p200300ea9733e7de329c23fffea6a903.dip0.t-ipconnect.de [IPv6:2003:ea:9733:e7de:329c:23ff:fea6:a903]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 32FA51EC06BD; Thu, 17 Nov 2022 11:40:19 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1668681619; 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:in-reply-to:in-reply-to: references:references; bh=v9d53AMzTDNJ48lo/Z9ImVNxZHde105TUW89d9bRoz0=; b=Jg6+fCBZLqD17u2TtLzeelEUAWzeXc0x7LjkP2hr3BP66WcGb14lhCrVZCbLzu8hgoVNQI SEkIGz87qTWAv+dEw/jByTWHF4M+KaL7AoUjdYSIttFEHmNSuT2TSWMLahqKXC/Bo+FmyD wve3QlNaewQo4MX3XNnKMtxiW8OaBHo= Date: Thu, 17 Nov 2022 11:40:14 +0100 From: Borislav Petkov To: Ravi Bangoria Cc: Peter Zijlstra , nslusarek@gmx.net, Linus Torvalds , x86@kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] perf: Fix sys_perf_event_open() race against self Message-ID: References: <20220520183806.GV2578@worktop.programming.kicks-ass.net> <700710fc-1ac1-1b39-0e63-eb86adb4b984@amd.com> <7bf54a3f-07f7-5471-f6c2-88d3d9bc7a5e@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <7bf54a3f-07f7-5471-f6c2-88d3d9bc7a5e@amd.com> X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Nov 17, 2022 at 04:03:54PM +0530, Ravi Bangoria wrote: > The issue was because of multiple event contexts involved. However, > it's no longer the case with reworked event context. I got that but it wouldn't hurt to have this test regardless, no? More testing is pretty much always better... -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette