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[209.85.208.170]) by smtp.gmail.com with ESMTPSA id c27sm1168325lfv.149.2021.04.08.09.22.57 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 08 Apr 2021 09:22:57 -0700 (PDT) Received: by mail-lj1-f170.google.com with SMTP id u4so2991208ljo.6 for ; Thu, 08 Apr 2021 09:22:57 -0700 (PDT) X-Received: by 2002:a2e:a306:: with SMTP id l6mr4543789lje.251.1617898977209; Thu, 08 Apr 2021 09:22:57 -0700 (PDT) MIME-Version: 1.0 References: <7abe5ab608c61fc2363ba458bea21cf9a4a64588.1617814298.git.gladkov.alexey@gmail.com> <20210408083026.GE1696@xsang-OptiPlex-9020> In-Reply-To: <20210408083026.GE1696@xsang-OptiPlex-9020> From: Linus Torvalds Date: Thu, 8 Apr 2021 09:22:40 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: 08ed4efad6: stress-ng.sigsegv.ops_per_sec -41.9% regression To: kernel test robot Cc: Jens Axboe , Feng Tang , 0day robot , Kernel Hardening , Linux Containers , Jann Horn , LKML , Oleg Nesterov , Linux-MM , lkp@lists.01.org, "Eric W . Biederman" , "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" T24gVGh1LCBBcHIgOCwgMjAyMSBhdCAxOjMyIEFNIGtlcm5lbCB0ZXN0IHJvYm90IDxvbGl2ZXIu c2FuZ0BpbnRlbC5jb20+IHdyb3RlOgo+Cj4gRllJLCB3ZSBub3RpY2VkIGEgLTQxLjklIHJlZ3Jl c3Npb24gb2Ygc3RyZXNzLW5nLnNpZ3NlZ3Yub3BzX3Blcl9zZWMgZHVlIHRvIGNvbW1pdAo+IDA4 ZWQ0ZWZhZDY4NCAoIltQQVRDSCB2MTAgNi85XSBSZWltcGxlbWVudCBSTElNSVRfU0lHUEVORElO RyBvbiB0b3Agb2YgdWNvdW50cyIpCgpPdWNoLgoKSSAqdGhpbmsqIHRoaXMgdGVzdCBtYXkgYmUg dGVzdGluZyAic2VuZCBzbyBtYW55IHNpZ25hbHMgdGhhdCBpdAp0cmlnZ2VycyB0aGUgc2lnbmFs IHF1ZXVlIG92ZXJmbG93IGNhc2UiLgoKQW5kIEkgKnRoaW5rKiB0aGF0IHRoZSBwZXJmb3JtYW5j ZSBkZWdyYWRhdGlvbiBtYXkgYmUgZHVlIHRvIGxvdHMgb2YKdW5uZWNlc3NhcnkgYWxsb2NhdGlv bnMsIGJlY2F1c2UgaXR5IGxvb2tzIGxpa2UgdGhhdCBjb21taXQgY2hhbmdlcwpfX3NpZ3F1ZXVl X2FsbG9jKCkgdG8gZG8KCiAgICAgICAgc3RydWN0IHNpZ3F1ZXVlICpxID0ga21lbV9jYWNoZV9h bGxvYyhzaWdxdWV1ZV9jYWNoZXAsIGZsYWdzKTsKCipiZWZvcmUqIGNoZWNraW5nIHRoZSBzaWdu YWwgbGltaXQsIGFuZCB0aGVuIGlmIHRoZSBzaWduYWwgbGltaXQgd2FzCmV4Y2VlZGVkLCBpdCB3 aWxsIGp1c3QgYmUgZnJlZSdkIGluc3RlYWQuCgpUaGUgb2xkIGNvZGUgd291bGQgY2hlY2sgdGhl IHNpZ25hbCBjb3VudCBhZ2FpbnN0IFJMSU1JVF9TSUdQRU5ESU5HCipmaXJzdCosIGFuZCBpZiB0 aGVyZSB3ZXJlIG0gb3JlIHBlbmRpbmcgc2lnbmFscyB0aGVuIGl0IHdvdWxkbid0IGRvCmFueXRo aW5nIGF0IGFsbCAoaW5jbHVkaW5nIG5vdCBpbmNyZW1lbnRpbmcgdGhhdCBleHBlbnNpdmUgYXRv bWljCmNvdW50KS4KCkFsc28sIHRoZSBvbGQgY29kZSB3YXMgdmVyeSBjYXJlZnVsIHRvIG9ubHkg ZG8gdGhlICJnZXRfdXNlcigpIiBmb3IKdGhlICpmaXJzdCogc2lnbmFsIGl0IGFkZGVkIHRvIHRo ZSBxdWV1ZSwgYW5kIGRvIHRoZSAicHV0X3VzZXIoKSIgZm9yCndoZW4gcmVtb3ZpbmcgdGhlIGxh c3Qgc2lnbmFsLiBFeGFjdGx5IGJlY2F1c2UgdGhvc2UgYXRvbWljcyBhcmUgdmVyeQpleHBlbnNp dmUuCgpUaGUgbmV3IGNvZGUganVzdCBkb2VzIGEgbG90IG9mIHRoZXNlIGF0b21pY3MgdW5jb25k aXRpb25hbGx5LgoKSSBkdW5uby4gVGhlIHByb2ZpbGUgZGF0YSBpbiB0aGVyZSBpcyBhIGJpdCBo YXJkIHRvIHJlYWQsIGJ1dCB0aGVyZSdzCmEgbG90IG1vcmUgY2FjaGVlIG1pc3NlcywgYW5kIGEg KmxvdCogb2Ygbm9kZSBjcm9zc2VyczoKCj4gICAgNTk2MTU0NCAgICAgICAgICArMTkwLjQlICAg MTczMTQzNjEgICAgICAgIHBlcmYtc3RhdC5pLmNhY2hlLW1pc3Nlcwo+ICAgMjIxMDc0NjYgICAg ICAgICAgKzExOS4yJSAgIDQ4NDU3NjU2ICAgICAgICBwZXJmLXN0YXQuaS5jYWNoZS1yZWZlcmVu Y2VzCj4gICAgIDE2MzI5MiDEhSAgMyUgICArNDU4Mi4wJSAgICA3NjQ1NDEwICAgICAgICBwZXJm LXN0YXQuaS5ub2RlLWxvYWQtbWlzc2VzCj4gICAgIDIyNzM4OCDEhSAgMiUgICArMzcwOC44JSAg ICA4NjYwODI0ICAgICAgICBwZXJmLXN0YXQuaS5ub2RlLWxvYWRzCgphbmQgKHByb2JhYmx5IGFz IGEgcmVzdWx0KSBhdmVyYWdlIGluc3RydWN0aW9uIGNvc3RzIGhhdmUgZ29uZSB1cCBlbm9ybW91 c2x5OgoKPiAgICAgICAzLjQ3ICAgICAgICAgICArNjYuOCUgICAgICAgNS43OSAgICAgICAgcGVy Zi1zdGF0Lm92ZXJhbGwuY3BpCj4gICAgICAyMjg0OSAgICAgICAgICAgLTY1LjYlICAgICAgIDc4 NjYgICAgICAgIHBlcmYtc3RhdC5vdmVyYWxsLmN5Y2xlcy1iZXR3ZWVuLWNhY2hlLW1pc3NlcwoK YW5kIGl0IGRvZXMgc2VlbSB0byBiZSBhdCBsZWFzdCBwYXJ0bHkgYWJvdXQgInB1dF91Y291bnRz KCkiOgoKPiAgICAgICAwLjAwICAgICAgICAgICAgKzQuNSAgICAgICAgNC40NiAgICAgICAgcGVy Zi1wcm9maWxlLmNhbGx0cmFjZS5jeWNsZXMtcHAucHV0X3Vjb3VudHMuX19zaWdxdWV1ZV9mcmVl LmdldF9zaWduYWwuYXJjaF9kb19zaWduYWxfb3JfcmVzdGFydC5leGl0X3RvX3VzZXJfbW9kZV9w cmVwYXJlCgphbmQgYSBsb3Qgb2YgImdldF91Y291bnRzKCkiLgoKQnV0IGl0IG1heSBhbHNvIGJl IHRoYXQgdGhlIG5ldyAiZ2V0IHNpZ3BlbmRpbmciIGlzIGp1c3QgKnNvKiBtdWNoCm1vcmUgZXhw ZW5zaXZlIHRoYW4gaXQgdXNlZCB0byBiZS4KCiAgICAgICAgICAgICAgIExpbnVzCl9fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCkNvbnRhaW5lcnMgbWFpbGlu ZyBsaXN0CkNvbnRhaW5lcnNAbGlzdHMubGludXgtZm91bmRhdGlvbi5vcmcKaHR0cHM6Ly9saXN0 cy5saW51eGZvdW5kYXRpb24ub3JnL21haWxtYW4vbGlzdGluZm8vY29udGFpbmVycw==