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=BAYES_00,DKIM_ADSP_CUSTOM_MED, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,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 B11B7C433B4 for ; Thu, 8 Apr 2021 16:44:44 +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 3F6B260FE6 for ; Thu, 8 Apr 2021 16:44:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3F6B260FE6 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.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 EA66840310; Thu, 8 Apr 2021 16:44:43 +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 xVNuU9nX3HNe; Thu, 8 Apr 2021 16:44:42 +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 A34984030A; Thu, 8 Apr 2021 16:44:42 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 7BC01C000C; Thu, 8 Apr 2021 16:44:42 +0000 (UTC) Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id 9EF72C000A for ; Thu, 8 Apr 2021 16:44:41 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id 85D6F40135 for ; Thu, 8 Apr 2021 16:44:41 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id p36s_e_ieoCT for ; Thu, 8 Apr 2021 16:44:40 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.8.0 Received: from vmicros1.altlinux.org (vmicros1.altlinux.org [194.107.17.57]) by smtp2.osuosl.org (Postfix) with ESMTP id ECF5140107 for ; Thu, 8 Apr 2021 16:44:30 +0000 (UTC) Received: from imap.altlinux.org (imap.altlinux.org [194.107.17.38]) by vmicros1.altlinux.org (Postfix) with ESMTP id CD32E72C8B1; Thu, 8 Apr 2021 19:44:28 +0300 (MSK) Received: from example.org (ip-94-113-225-162.net.upcbroadband.cz [94.113.225.162]) by imap.altlinux.org (Postfix) with ESMTPSA id 9991E4A4726; Thu, 8 Apr 2021 19:44:27 +0300 (MSK) Date: Thu, 8 Apr 2021 18:44:26 +0200 From: Alexey Gladkov To: Linus Torvalds Subject: Re: 08ed4efad6: stress-ng.sigsegv.ops_per_sec -41.9% regression Message-ID: <20210408164426.o5cfvv3ixowsto62@example.org> References: <7abe5ab608c61fc2363ba458bea21cf9a4a64588.1617814298.git.gladkov.alexey@gmail.com> <20210408083026.GE1696@xsang-OptiPlex-9020> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: 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 , "Eric W . Biederman" , "Huang, Ying" , Andrew Morton , zhengjun.xing@intel.com, 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" T24gVGh1LCBBcHIgMDgsIDIwMjEgYXQgMDk6MjI6NDBBTSAtMDcwMCwgTGludXMgVG9ydmFsZHMg d3JvdGU6Cj4gT24gVGh1LCBBcHIgOCwgMjAyMSBhdCAxOjMyIEFNIGtlcm5lbCB0ZXN0IHJvYm90 IDxvbGl2ZXIuc2FuZ0BpbnRlbC5jb20+IHdyb3RlOgo+ID4KPiA+IEZZSSwgd2Ugbm90aWNlZCBh IC00MS45JSByZWdyZXNzaW9uIG9mIHN0cmVzcy1uZy5zaWdzZWd2Lm9wc19wZXJfc2VjIGR1ZSB0 byBjb21taXQKPiA+IDA4ZWQ0ZWZhZDY4NCAoIltQQVRDSCB2MTAgNi85XSBSZWltcGxlbWVudCBS TElNSVRfU0lHUEVORElORyBvbiB0b3Agb2YgdWNvdW50cyIpCj4gCj4gT3VjaC4KPiAKPiBJICp0 aGluayogdGhpcyB0ZXN0IG1heSBiZSB0ZXN0aW5nICJzZW5kIHNvIG1hbnkgc2lnbmFscyB0aGF0 IGl0Cj4gdHJpZ2dlcnMgdGhlIHNpZ25hbCBxdWV1ZSBvdmVyZmxvdyBjYXNlIi4KPiAKPiBBbmQg SSAqdGhpbmsqIHRoYXQgdGhlIHBlcmZvcm1hbmNlIGRlZ3JhZGF0aW9uIG1heSBiZSBkdWUgdG8g bG90cyBvZgo+IHVubmVjZXNzYXJ5IGFsbG9jYXRpb25zLCBiZWNhdXNlIGl0eSBsb29rcyBsaWtl IHRoYXQgY29tbWl0IGNoYW5nZXMKPiBfX3NpZ3F1ZXVlX2FsbG9jKCkgdG8gZG8KPiAKPiAgICAg ICAgIHN0cnVjdCBzaWdxdWV1ZSAqcSA9IGttZW1fY2FjaGVfYWxsb2Moc2lncXVldWVfY2FjaGVw LCBmbGFncyk7Cj4gCj4gKmJlZm9yZSogY2hlY2tpbmcgdGhlIHNpZ25hbCBsaW1pdCwgYW5kIHRo ZW4gaWYgdGhlIHNpZ25hbCBsaW1pdCB3YXMKPiBleGNlZWRlZCwgaXQgd2lsbCBqdXN0IGJlIGZy ZWUnZCBpbnN0ZWFkLgo+IAo+IFRoZSBvbGQgY29kZSB3b3VsZCBjaGVjayB0aGUgc2lnbmFsIGNv dW50IGFnYWluc3QgUkxJTUlUX1NJR1BFTkRJTkcKPiAqZmlyc3QqLCBhbmQgaWYgdGhlcmUgd2Vy ZSBtIG9yZSBwZW5kaW5nIHNpZ25hbHMgdGhlbiBpdCB3b3VsZG4ndCBkbwo+IGFueXRoaW5nIGF0 IGFsbCAoaW5jbHVkaW5nIG5vdCBpbmNyZW1lbnRpbmcgdGhhdCBleHBlbnNpdmUgYXRvbWljCj4g Y291bnQpLgo+IAo+IEFsc28sIHRoZSBvbGQgY29kZSB3YXMgdmVyeSBjYXJlZnVsIHRvIG9ubHkg ZG8gdGhlICJnZXRfdXNlcigpIiBmb3IKPiB0aGUgKmZpcnN0KiBzaWduYWwgaXQgYWRkZWQgdG8g dGhlIHF1ZXVlLCBhbmQgZG8gdGhlICJwdXRfdXNlcigpIiBmb3IKPiB3aGVuIHJlbW92aW5nIHRo ZSBsYXN0IHNpZ25hbC4gRXhhY3RseSBiZWNhdXNlIHRob3NlIGF0b21pY3MgYXJlIHZlcnkKPiBl eHBlbnNpdmUuCj4gCj4gVGhlIG5ldyBjb2RlIGp1c3QgZG9lcyBhIGxvdCBvZiB0aGVzZSBhdG9t aWNzIHVuY29uZGl0aW9uYWxseS4KClllcyBhbmQgcmlnaHQgbm93IEknbSB0cnlpbmcgdG8gcmV3 cml0ZSB0aGlzIHBhdGNoLgoKPiBJIGR1bm5vLiBUaGUgcHJvZmlsZSBkYXRhIGluIHRoZXJlIGlz IGEgYml0IGhhcmQgdG8gcmVhZCwgYnV0IHRoZXJlJ3MKPiBhIGxvdCBtb3JlIGNhY2hlZSBtaXNz ZXMsIGFuZCBhICpsb3QqIG9mIG5vZGUgY3Jvc3NlcnM6Cj4gCj4gPiAgICA1OTYxNTQ0ICAgICAg ICAgICsxOTAuNCUgICAxNzMxNDM2MSAgICAgICAgcGVyZi1zdGF0LmkuY2FjaGUtbWlzc2VzCj4g PiAgIDIyMTA3NDY2ICAgICAgICAgICsxMTkuMiUgICA0ODQ1NzY1NiAgICAgICAgcGVyZi1zdGF0 LmkuY2FjaGUtcmVmZXJlbmNlcwo+ID4gICAgIDE2MzI5MiDEhSAgMyUgICArNDU4Mi4wJSAgICA3 NjQ1NDEwICAgICAgICBwZXJmLXN0YXQuaS5ub2RlLWxvYWQtbWlzc2VzCj4gPiAgICAgMjI3Mzg4 IMSFICAyJSAgICszNzA4LjglICAgIDg2NjA4MjQgICAgICAgIHBlcmYtc3RhdC5pLm5vZGUtbG9h ZHMKPiAKPiBhbmQgKHByb2JhYmx5IGFzIGEgcmVzdWx0KSBhdmVyYWdlIGluc3RydWN0aW9uIGNv c3RzIGhhdmUgZ29uZSB1cCBlbm9ybW91c2x5Ogo+IAo+ID4gICAgICAgMy40NyAgICAgICAgICAg KzY2LjglICAgICAgIDUuNzkgICAgICAgIHBlcmYtc3RhdC5vdmVyYWxsLmNwaQo+ID4gICAgICAy Mjg0OSAgICAgICAgICAgLTY1LjYlICAgICAgIDc4NjYgICAgICAgIHBlcmYtc3RhdC5vdmVyYWxs LmN5Y2xlcy1iZXR3ZWVuLWNhY2hlLW1pc3Nlcwo+IAo+IGFuZCBpdCBkb2VzIHNlZW0gdG8gYmUg YXQgbGVhc3QgcGFydGx5IGFib3V0ICJwdXRfdWNvdW50cygpIjoKPiAKPiA+ICAgICAgIDAuMDAg ICAgICAgICAgICArNC41ICAgICAgICA0LjQ2ICAgICAgICBwZXJmLXByb2ZpbGUuY2FsbHRyYWNl LmN5Y2xlcy1wcC5wdXRfdWNvdW50cy5fX3NpZ3F1ZXVlX2ZyZWUuZ2V0X3NpZ25hbC5hcmNoX2Rv X3NpZ25hbF9vcl9yZXN0YXJ0LmV4aXRfdG9fdXNlcl9tb2RlX3ByZXBhcmUKPiAKPiBhbmQgYSBs b3Qgb2YgImdldF91Y291bnRzKCkiLgo+IAo+IEJ1dCBpdCBtYXkgYWxzbyBiZSB0aGF0IHRoZSBu ZXcgImdldCBzaWdwZW5kaW5nIiBpcyBqdXN0ICpzbyogbXVjaAo+IG1vcmUgZXhwZW5zaXZlIHRo YW4gaXQgdXNlZCB0byBiZS4KClRoYW5rcyBmb3IgZGVjcnlwdGluZyB0aGlzISBJIHNwZW50IHNv bWUgdGltZSB0byB1bmRlcnN0YW5kIHRoaXMgcmVwb3J0CmFuZCBzdGlsbCB3YXNuJ3Qgc3VyZSBJ IHVuZGVyc3Rvb2QgaXQuCgotLSAKUmdyZHMsIGxlZ2lvbgoKX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX18KQ29udGFpbmVycyBtYWlsaW5nIGxpc3QKQ29udGFp bmVyc0BsaXN0cy5saW51eC1mb3VuZGF0aW9uLm9yZwpodHRwczovL2xpc3RzLmxpbnV4Zm91bmRh dGlvbi5vcmcvbWFpbG1hbi9saXN0aW5mby9jb250YWluZXJz