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[23.128.96.18]) by mx.google.com with ESMTP id w22si169767eds.591.2020.11.30.17.48.55; Mon, 30 Nov 2020 17:49:18 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@intel-com.20150623.gappssmtp.com header.s=20150623 header.b=rWNSLZcc; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731203AbgLABrL (ORCPT + 99 others); Mon, 30 Nov 2020 20:47:11 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40254 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728678AbgLABrL (ORCPT ); Mon, 30 Nov 2020 20:47:11 -0500 Received: from mail-ed1-x535.google.com (mail-ed1-x535.google.com [IPv6:2a00:1450:4864:20::535]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EC296C0613CF for ; Mon, 30 Nov 2020 17:46:30 -0800 (PST) Received: by mail-ed1-x535.google.com with SMTP id y4so620014edy.5 for ; Mon, 30 Nov 2020 17:46:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=intel-com.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=M+5BnXN0m77zeqbV9n5TCbwnpu1hY0RqzGtMEds/qCk=; b=rWNSLZccHLQMDZM511qECtn11KzmY9V1pm3NFzbNx9FNIAvMfbJZ5PhH7y7RJpOQFh NkY3FA5HR5Hf5mnziwzJM9svdIja4C0kx6z3oxGLOS+IWW7J2arI2VO2kc+FMAzkt1h2 n3Fu6rpF2T9mB3i+lPu0V5lqbvqCIRttoYP6vG3JP3T1bZe9839Cf9PCkUMZa/6GKJLR 11hBNNHNXJjNQ6JpUlNcuCZpCATMj4pAhtQHYEEhiz06MWPMl+cm1R7IUOpdNJnRcS7M ji5eScauaoh3xBsM9+ys81gjfuZGq+OdTLnNHeiZB9TB+mVemzSANEyYFu7dJH/1++BW tZJg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=M+5BnXN0m77zeqbV9n5TCbwnpu1hY0RqzGtMEds/qCk=; b=bsiLycFNsuVBeiQ4V3yYKyk7tGadsSW/XtP5z4d+0jpPZgkC494ggvGzk30+m6koSo UJHlLNG6rOAvJBcWLSi4zEEiXx8ag0zaIdtRV89X8Kqyy0XQd1Cyja2WRc389N8npkR2 Mns6MAR3G/yJllOuL4xzu+E0bVmHvEFnOEKnIg0HRrZbCkUkFcURWJqgIqh32e+ZgyLk vQUeZ2yBdC4JGXUQt+JV+ieHJNFTlhwuMLdbHiJmQSHgEINmyVzgbL3sK5Bdwp9TqTta fGYVm+Jh7puMPEGonKFQXOQWUggjYECT4IN553F5LONc4TNSCbAjlw3gp6v4zseT6C0g zneA== X-Gm-Message-State: AOAM532Yvq0mBzqPmw/ii+MtvhvR0X1SDz4xJa7M6bkOGxONfw+P8mGz ut/9kVQ27+aKlozjrM7Eyew1ZgA0kcV+KaHdc6bjd8gXFBs2Gw== X-Received: by 2002:a50:e0ce:: with SMTP id j14mr697382edl.18.1606787185958; Mon, 30 Nov 2020 17:46:25 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Dan Williams Date: Mon, 30 Nov 2020 17:46:22 -0800 Message-ID: Subject: Re: mapcount corruption regression To: "Shutemov, Kirill" , Matthew Wilcox Cc: Linux Kernel Mailing List , Linux MM , linux-nvdimm , Yi Zhang Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Nov 30, 2020 at 5:20 PM Dan Williams wrote: > > Kirill, Willy, compound page experts, > > I am seeking some debug ideas about the following splat: > > BUG: Bad page state in process lt-pmem-ns pfn:121a12 Looks to be a similar signature that Yi Zhang is seeing: http://lore.kernel.org/r/51e938d1-aff7-0fa4-1a79-f77ac8bb2f8b@redhat.com