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=-3.8 required=3.0 tests=BAYES_00, 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 737EEC433B4 for ; Thu, 8 Apr 2021 18:45:00 +0000 (UTC) Received: from smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (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 03BA1610FC for ; Thu, 8 Apr 2021 18:44:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 03BA1610FC Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=xmission.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=containers-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id B0F804183F; Thu, 8 Apr 2021 18:44:59 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id NBApReMZoj1k; Thu, 8 Apr 2021 18:44:58 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [IPv6:2605:bc80:3010:104::8cd3:938]) by smtp4.osuosl.org (Postfix) with ESMTP id 648484183B; Thu, 8 Apr 2021 18:44:58 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 39597C000C; Thu, 8 Apr 2021 18:44:58 +0000 (UTC) Received: from smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id 040C3C000A for ; Thu, 8 Apr 2021 18:44:56 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id DDE534183C for ; Thu, 8 Apr 2021 18:44:56 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id F70SCTpRa_I8 for ; Thu, 8 Apr 2021 18:44:55 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.8.0 Received: from out03.mta.xmission.com (out03.mta.xmission.com [166.70.13.233]) by smtp4.osuosl.org (Postfix) with ESMTPS id 8D9A84183B for ; Thu, 8 Apr 2021 18:44:55 +0000 (UTC) Received: from in02.mta.xmission.com ([166.70.13.52]) by out03.mta.xmission.com with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1lUZe5-00Ejb5-PM; Thu, 08 Apr 2021 12:44:50 -0600 Received: from ip68-227-160-95.om.om.cox.net ([68.227.160.95] helo=fess.xmission.com) by in02.mta.xmission.com with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1lUZe4-00A0nq-5p; Thu, 08 Apr 2021 12:44:49 -0600 From: ebiederm@xmission.com (Eric W. Biederman) To: Linus Torvalds References: <7abe5ab608c61fc2363ba458bea21cf9a4a64588.1617814298.git.gladkov.alexey@gmail.com> <20210408083026.GE1696@xsang-OptiPlex-9020> Date: Thu, 08 Apr 2021 13:44:43 -0500 In-Reply-To: (Linus Torvalds's message of "Thu, 8 Apr 2021 09:22:40 -0700") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) MIME-Version: 1.0 X-XM-SPF: eid=1lUZe4-00A0nq-5p; ; ; mid=; ; ; hst=in02.mta.xmission.com; ; ; ip=68.227.160.95; ; ; frm=ebiederm@xmission.com; ; ; spf=neutral X-XM-AID: U2FsdGVkX19JLUsOtBvU+Hb1U0UwhyIZDve8LzlJSks= X-SA-Exim-Connect-IP: 68.227.160.95 X-SA-Exim-Mail-From: ebiederm@xmission.com Subject: Re: 08ed4efad6: stress-ng.sigsegv.ops_per_sec -41.9% regression X-SA-Exim-Version: 4.2.1 (built Sat, 08 Feb 2020 21:53:50 +0000) X-SA-Exim-Scanned: Yes (on in02.mta.xmission.com) Cc: Jens Axboe , Feng Tang , 0day robot , Kernel Hardening , Linux Containers , Jann Horn , LKML , Oleg Nesterov , Linux-MM , lkp@lists.01.org, kernel test robot , "Huang, Ying" , Andrew Morton , zhengjun.xing@intel.com, Alexey Gladkov , Kees Cook X-BeenThere: containers@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux Containers List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: containers-bounces@lists.linux-foundation.org Sender: "Containers" TGludXMgVG9ydmFsZHMgPHRvcnZhbGRzQGxpbnV4LWZvdW5kYXRpb24ub3JnPiB3cml0ZXM6Cgo+ IE9uIFRodSwgQXByIDgsIDIwMjEgYXQgMTozMiBBTSBrZXJuZWwgdGVzdCByb2JvdCA8b2xpdmVy LnNhbmdAaW50ZWwuY29tPiB3cm90ZToKPj4KPj4gRllJLCB3ZSBub3RpY2VkIGEgLTQxLjklIHJl Z3Jlc3Npb24gb2Ygc3RyZXNzLW5nLnNpZ3NlZ3Yub3BzX3Blcl9zZWMgZHVlIHRvIGNvbW1pdAo+ PiAwOGVkNGVmYWQ2ODQgKCJbUEFUQ0ggdjEwIDYvOV0gUmVpbXBsZW1lbnQgUkxJTUlUX1NJR1BF TkRJTkcgb24gdG9wIG9mIHVjb3VudHMiKQo+Cj4gT3VjaC4KCldlIHdlcmUgY2F1dGlvdXNseSBv cHRpbWlzdGljIHdoZW4gbm8gdGVzdCBwcm9ibGVtcyBzaG93ZWQgdXAgZnJvbQp0aGUgbGFzdCBw 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