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=-17.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, URIBL_BLOCKED,USER_AGENT_SANE_2 autolearn=ham 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 0915AC433FE for ; Fri, 4 Dec 2020 12:02:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B39912251E for ; Fri, 4 Dec 2020 12:02:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728737AbgLDMCU (ORCPT ); Fri, 4 Dec 2020 07:02:20 -0500 Received: from mailgw02.mediatek.com ([210.61.82.184]:41413 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1728490AbgLDMCU (ORCPT ); Fri, 4 Dec 2020 07:02:20 -0500 X-UUID: 7f691940b8a84e01adf499202e90c387-20201204 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:MIME-Version:Content-Type:References:In-Reply-To:Date:CC:To:From:Subject:Message-ID; bh=dVCInG0+zFay29/zF5Qgk8PnqNpkCmMd63za3Ohahxo=; b=JJFDFWVMB/j6US1p7J4UwV6+Yi/wBiL5hUr7CpiliwP4fGf/saQJFUdt1jXvd8JrtIMajIP9+JpdvVEghDUCn5D1wDmQFdjVi9MdbuUklPDzr+6nQjG8BaALMsZuKxMUpzILhA8D4pmocBm7SvdZFPocA3m1O5kuxK15FSI5AZA=; X-UUID: 7f691940b8a84e01adf499202e90c387-20201204 Received: from mtkcas07.mediatek.inc [(172.21.101.84)] by mailgw02.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.14 Build 0819 with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 133938143; Fri, 04 Dec 2020 20:01:36 +0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs01n1.mediatek.inc (172.21.101.68) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 4 Dec 2020 20:01:32 +0800 Received: from [172.21.84.99] (172.21.84.99) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Fri, 4 Dec 2020 20:01:32 +0800 Message-ID: <1607083295.22062.15.camel@mtksdccf07> Subject: Re: [PATCH] kasan: fix slab double free when cpu-hotplug From: Kuan-Ying Lee To: "qiang.zhang@windriver.com" , "sfr@canb.auug.org.au" CC: "aryabinin@virtuozzo.com" , "dvyukov@google.com" , "akpm@linux-foundation.org" , "andreyknvl@google.com" , "qcai@redhat.com" , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , Date: Fri, 4 Dec 2020 20:01:35 +0800 In-Reply-To: <20201204102206.20237-1-qiang.zhang@windriver.com> References: <20201204102206.20237-1-qiang.zhang@windriver.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.3-0ubuntu6 MIME-Version: 1.0 X-MTK: N Content-Transfer-Encoding: base64 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org T24gRnJpLCAyMDIwLTEyLTA0IGF0IDE4OjIyICswODAwLCBxaWFuZy56aGFuZ0B3aW5kcml2ZXIu Y29tIHdyb3RlOg0KPiBGcm9tOiBacWlhbmcgPHFpYW5nLnpoYW5nQHdpbmRyaXZlci5jb20+DQo+ IA0KPiBXaGVuIGEgQ1BVIG9mZmxpbmUsIHRoZSBwZXItY3B1IHF1YXJhbnRpbmUncyBvZmZsaW5l IGJlIHNldCB0cnVlLA0KPiBhZnRlciB0aGlzLCBpZiB0aGUgcXVhcmFudGluZV9wdXQgYmUgY2Fs bGVkIGluIHRoaXMgQ1BVLCB0aGUgb2JqZWN0cw0KPiB3aWxsIGJlIGZyZWUgYW5kIHJldHVybiBm YWxzZSwgZnJlZSBvYmplY3RzIGRvZXNuJ3QgdG8gYmUgZG9uZSwgZHVlDQo+IHRvIHJldHVybiBm YWxzZSwgdGhlIHNsYWIgbWVtb3J5IG1hbmFnZXIgd2lsbCBmcmVlIHRoaXMgb2JqZWN0cy4NCj4g DQo+IEZpeGVzOiA0MWFiMWFhZTc4MWYgKCJrYXNhbjogZml4IG9iamVjdCByZW1haW5pbmcgaW4g b2ZmbGluZSBwZXItY3B1IHF1YXJhbnRpbmUiKQ0KPiBTaWduZWQtb2ZmLWJ5OiBacWlhbmcgPHFp YW5nLnpoYW5nQHdpbmRyaXZlci5jb20+DQo+IC0tLQ0KPiAgbW0va2FzYW4vcXVhcmFudGluZS5j IHwgMSAtDQo+ICAxIGZpbGUgY2hhbmdlZCwgMSBkZWxldGlvbigtKQ0KPiANCj4gZGlmZiAtLWdp dCBhL21tL2thc2FuL3F1YXJhbnRpbmUuYyBiL21tL2thc2FuL3F1YXJhbnRpbmUuYw0KPiBpbmRl eCBkOThiNTE2ZjM3MmYuLjU1NzgzMTI1YTc2NyAxMDA2NDQNCj4gLS0tIGEvbW0va2FzYW4vcXVh cmFudGluZS5jDQo+ICsrKyBiL21tL2thc2FuL3F1YXJhbnRpbmUuYw0KPiBAQCAtMTk0LDcgKzE5 NCw2IEBAIGJvb2wgcXVhcmFudGluZV9wdXQoc3RydWN0IGttZW1fY2FjaGUgKmNhY2hlLCB2b2lk ICpvYmplY3QpDQo+ICANCj4gIAlxID0gdGhpc19jcHVfcHRyKCZjcHVfcXVhcmFudGluZSk7DQo+ ICAJaWYgKHEtPm9mZmxpbmUpIHsNCj4gLQkJcWxpbmtfZnJlZSgmbWV0YS0+cXVhcmFudGluZV9s aW5rLCBjYWNoZSk7DQo+ICAJCWxvY2FsX2lycV9yZXN0b3JlKGZsYWdzKTsNCj4gIAkJcmV0dXJu IGZhbHNlOw0KPiAgCX0NCg0KSGkgUWlhbmcsDQoNClRoYW5rcyBmb3IgZml4aW5nIHRoaXMuDQpE dWUgdG8gdGhhdCBpc3N1ZSwgbXkgY29tbWl0IGhhcyBiZWVuIHJlbW92ZWQgYnkgU3RlcGhlbiBm cm9tDQpsaW51eC1uZXh0Lg0KDQoNCkhpIFN0ZXBoZW4sIEFuZHJldywNCg0KU2hvdWxkIEkgZGly ZWN0bHkgdXBsb2FkIHRoZSB2NCBvciBTdGVwaGVuIGNhbiBwaWNrIHRoZSBjb21taXQgd2hpY2gg DQpoYXMgYmVlbiByZW1vdmVkIGJhY2sgdG8gdGhlIGxpbnV4LW5leHQuDQoNCldoYXQgZG8geW91 IHRoaW5rPw0KDQpUaGFua3MgYSBsb3QuDQoNCkt1YW4tWWluZw0K