Received: by 2002:a05:6358:7058:b0:131:369:b2a3 with SMTP id 24csp8862584rwp; Wed, 19 Jul 2023 17:06:18 -0700 (PDT) X-Google-Smtp-Source: APBJJlEjAkiaNpYufPPsmnx5CzWq/rpbqBlatLLJL+X59h05WBjvaNr2VMlV5M4ssb6SXdT5ztBW X-Received: by 2002:a17:906:6713:b0:993:fb68:ed6c with SMTP id a19-20020a170906671300b00993fb68ed6cmr3623365ejp.15.1689811578167; Wed, 19 Jul 2023 17:06:18 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1689811578; cv=none; d=google.com; s=arc-20160816; b=lVBuDgx0zzrRSasvTn3x5370eYNYdtDdcj4UITqsR6/k4plLYSvtm0Fap6Z1HKEOJS y6FpRnc/5HALNCaZ1+blx5Nay6PZ2uGS1bgPY1yWe5GLKaF70cI46cdG8AscGzwBmuUt fZoQZNbtdWgjvNxUSs9dkxcCfnuabUUVwhcK8cLP5Y7XeR7wHXhz5ePnJfFjf6uraudW ZhbvdKB4+5Xi4WTUbMekQ8t88D+cyDWCBysQhWzzBjscCt2eWKXmPz5VmEXwHzQYC14+ pprEeKkkpXkzpGYmE7aVuC4B6gRk8v6PYF+mleI01tKHc4AQXLrW8eE90PDI/N8LCKBd 6Vgw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:dkim-signature:date; bh=RCVkYVVeqi5N6Z5dc11m8iY9xquKs/O/et4i98KCIVA=; fh=IGo2v47R2MqZMk4oSX6y1kJZIAXF8hsWb9KteX0pOuE=; b=Iwrv0Jo8IPbjYpxiDXMmzryUj7rbZaD2/5v2BcAmoWBuWuyhWFBzUUXmXwbiewFOsy hz89TDd/BOXTTKHZbR/gfDb6inU2YdbSNCi5zyY6GnzdCVDgRA5hhs5mUNHgvZK/NdvF clPfXMA6ju5CqSVP4iTsDm9Xvn5MmZqhAYMVGLs+Kyg5Z25r80zUWpNyQyVNTnKAqeEC HHOP7QOBYPhv7GbcG2mLranvRIG14lkr8FBZdKI06zuNqNMrGXA5rQ4QNLyOlig9GN79 LSV2FZvc4R4JsC3Ihw1SbsGbgGDYh2K07CgdNj6RayNBTqmYoQEFt5x4FOpBYqTjYylZ seMg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linux.dev header.s=key1 header.b="oOo/VMPs"; 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=linux.dev Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id u8-20020a170906780800b00988b2dfc3b3si3561641ejm.517.2023.07.19.17.05.53; Wed, 19 Jul 2023 17:06:18 -0700 (PDT) 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=@linux.dev header.s=key1 header.b="oOo/VMPs"; 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=linux.dev Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229616AbjGSXuq (ORCPT + 99 others); Wed, 19 Jul 2023 19:50:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43258 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229450AbjGSXuo (ORCPT ); Wed, 19 Jul 2023 19:50:44 -0400 Received: from out-32.mta1.migadu.com (out-32.mta1.migadu.com [95.215.58.32]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 23959C6 for ; Wed, 19 Jul 2023 16:50:44 -0700 (PDT) Date: Thu, 20 Jul 2023 08:50:35 +0900 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1689810642; 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: in-reply-to:in-reply-to:references:references; bh=RCVkYVVeqi5N6Z5dc11m8iY9xquKs/O/et4i98KCIVA=; b=oOo/VMPsUndu4nAy/dDp+fJt3aR3XEbr0eVAr05HSdqgdmGi5aDsnAGKpMZHuwdU/LWO4t pfvGW5H0YA0RJii4RSrHSZ8gEJUOGSxUjRs/uwLJR27fw/2SsWmbiGklBaFzu3ksaMGgUr rCom3jIk7298+c9UKu+R8whqf7hUDK4= X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Naoya Horiguchi To: Miaohe Lin Cc: akpm@linux-foundation.org, naoya.horiguchi@nec.com, shy828301@gmail.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 3/4] mm: memory-failure: avoid false hwpoison page mapped error info Message-ID: <20230719235035.GB1583723@ik1-406-35019.vs.sakura.ne.jp> References: <20230715031729.2420338-1-linmiaohe@huawei.com> <20230715031729.2420338-4-linmiaohe@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20230715031729.2420338-4-linmiaohe@huawei.com> X-Migadu-Flow: FLOW_OUT X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_BLOCKED, RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE, URIBL_BLOCKED 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 Sat, Jul 15, 2023 at 11:17:28AM +0800, Miaohe Lin wrote: > folio->_mapcount is overloaded in SLAB, so folio_mapped() has to be done > after folio_test_slab() is checked. Otherwise slab folio might be treated > as a mapped folio leading to false 'Someone maps the hwpoison page' error > info. > > Fixes: 230ac719c500 ("mm/hwpoison: don't try to unpoison containment-failed pages") > Signed-off-by: Miaohe Lin Acked-by: Naoya Horiguchi